merge: P4b S6, paying on terms (branch S6, 6c4480cd)

The third of the paused branches: Ledger::settle with discounts and the
processor's fee (kernel::settle, Kani settle_is_exact, Lean
settle_posts_a_document_step), books.receive_payment and books.pay_bill
with applications, books.bills_due, the agings' detail and tie-out, the
aging exports and the CPA package's aging CSVs, the handlers in
tools/settlements.rs. Twelve files conflicted with the S4.4 and S5
merges, resolved as plan 8.0.2 says: both routers; both test appends
(the shared match arm in arap_standing.rs spliced into both tests; the
shared `.unwrap()` in store.rs); the scope table at 124; one
invoices-and-bills handbook (S5's send step 1 with S6's steps 2, 3, 5
and procedures) registered once; docs/mcp-interface.md with S4.4's
create docs and S6's payment docs; S5's law renumbered 35 and S6's 36
(S1's is 34); the parity rows and sections of both. S6's wire tests
create their bills as S4.4's contract now requires (confirmed, the
vendor's number, a line account, the vendor's invoice uploaded) and live
in their own module beside S4.4's tests.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HS8WZziDnyxunC23MUxrLp
This commit is contained in:
swaitsandClaude Fable 5.1 committed 2026-10-28 21:26:40 -06:00
commit be58059830
45 files changed
+3949 -520

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@@ -795,3 +795,420 @@ fn mark_sent_records_who_and_how() {
"a send changes no figure"
);
}
// P4b S6: paying on terms (merged from branch S6), in its own module so its
// helpers keep their names beside S4.4's.
mod paying_on_terms {
use super::common::answer_of;
use super::*;
/// Call a tool and unwrap its answer.
fn ok(w: &mut Wire, tool: &str, args: Value) -> Value {
answer_of(&w.call(tool, args)).unwrap_or_else(|e| panic!("{tool}: {e}"))
}
/// The refusal's text.
fn err(w: &mut Wire, tool: &str, args: Value) -> String {
answer_of(&w.call(tool, args)).expect_err(&format!("{tool} was accepted"))
}
struct Setup {
_books: Books,
wire: Wire,
customer: u64,
vendor: u64,
bills: u32,
}
/// Bank 1000, card 2050, capital 3000, a customer and a vendor, then a
/// session.
fn setup(tag: &str) -> Setup {
let books = Books::new(tag);
let mut wire = books.session("documents");
ok(
&mut wire,
"books.add_account",
json!({"code": "1000", "name": "Bank", "account_type": "asset"}),
);
ok(
&mut wire,
"books.add_account",
json!({"code": "2050", "name": "Card", "account_type": "liability"}),
);
ok(
&mut wire,
"books.add_account",
json!({"code": "3000", "name": "Capital", "account_type": "equity"}),
);
ok(
&mut wire,
"books.add_account",
json!({"code": "6999", "name": "General Expenses", "account_type": "expense"}),
);
let customer = ok(
&mut wire,
"books.add_customer",
json!({"name": "Fernhill Labs"}),
)["id"]
.as_u64()
.unwrap();
let vendor = ok(
&mut wire,
"books.add_vendor",
json!({"name": "Tobin Harlow Supply"}),
)["id"]
.as_u64()
.unwrap();
Setup {
_books: books,
wire,
customer,
vendor,
bills: 0,
}
}
impl Setup {
fn invoice(&mut self, date: &str, due: &str, amount: &str) -> u64 {
ok(
&mut self.wire,
"books.create_invoice",
json!({"party_id": self.customer, "date": date, "due_date": due,
"lines": [{"description": "Consulting", "amount": amount}],
"confirmed": true}),
)["id"]
.as_u64()
.unwrap()
}
fn bill(&mut self, date: &str, due: &str, amount: &str) -> u64 {
// Under documents_v2 (P4b S4.4) a bill names the vendor's invoice
// number, each line's account, and carries the vendor's invoice.
self.bills += 1;
let file = self.wire.upload(
format!("vendor invoice TH-{}", self.bills).as_bytes(),
"bill.pdf",
"application/pdf",
"receipt",
);
ok(
&mut self.wire,
"books.create_bill",
json!({"party_id": self.vendor, "date": date, "due_date": due,
"vendor_ref": format!("TH-{}", self.bills),
"lines": [{"description": "Paper", "amount": amount, "account": "6999"}],
"upload_id": file, "confirmed": true}),
)["id"]
.as_u64()
.unwrap()
}
fn line(&mut self, entry: u64, code: &str) -> (String, String, String) {
let e = ok(
&mut self.wire,
"books.get_entry",
json!({"entry_id": entry}),
);
for l in e["lines"].as_array().unwrap() {
if l["code"] == json!(code) {
return (
l["side"].as_str().unwrap().to_string(),
l["amount"].as_str().unwrap().to_string(),
code.to_string(),
);
}
}
panic!("{code} not in entry {entry}: {e}");
}
}
/// One deposit settles two invoices of one customer: one entry, one
/// receivable line per invoice, each tagged with its own invoice, and the
/// output names both documents (B-42 INVARIANTS 1 and 3).
#[test]
fn one_payment_settles_two_invoices() {
let mut s = setup("settle-two");
let first = s.invoice("2026-02-01", "2026-03-01", "500.00");
let second = s.invoice("2026-02-05", "2026-04-30", "80.00");
let out = ok(
&mut s.wire,
"books.receive_payment",
json!({"date": "2026-02-10", "deposit_to": "1000",
"reference": "one deposit",
"applications": [
{"invoice": first, "amount": "300.00"},
{"invoice": second, "amount": "80.00"}
]}),
);
assert_eq!(out["deposited"], json!("380.00"));
let refs: Vec<&str> = out["documents"]
.as_array()
.unwrap()
.iter()
.map(|d| d["ref"].as_str().unwrap())
.collect();
assert_eq!(
refs,
[format!("invoice:{first}"), format!("invoice:{second}")]
);
assert_eq!(out["documents"][0]["outstanding"], json!("200.00"));
assert_eq!(out["documents"][1]["status"], json!("paid"));
// The entry: one deposit line, two receivable lines.
let entry = out["entry_id"].as_u64().unwrap();
let e = ok(&mut s.wire, "books.get_entry", json!({"entry_id": entry}));
let lines = e["lines"].as_array().unwrap();
assert_eq!(lines.len(), 3);
assert_eq!(lines[0]["side"], json!("credit"));
assert_eq!(lines[0]["amount"], json!("300.00"));
assert_eq!(lines[1]["side"], json!("credit"));
assert_eq!(lines[1]["amount"], json!("80.00"));
// Each invoice's timeline shows its own payment from this entry.
for (id, paid) in [(first, "300.00"), (second, "80.00")] {
let d = ok(
&mut s.wire,
"books.document",
json!({"ref": format!("invoice:{id}"), "as_of": "2026-12-31"}),
);
let payment = d["timeline"]
.as_array()
.unwrap()
.iter()
.find(|t| t["kind"] == json!("payment"))
.unwrap();
assert_eq!(payment["entry_id"].as_u64().unwrap(), entry);
assert_eq!(payment["amount"], json!(format!("-{paid}")));
}
}
/// A discount outside the document's terms needs a reason; with one the
/// payment is taken and recorded (B-42 INVARIANT 2; the terms are S4.3's
/// to journal, so this bill states none).
#[test]
fn late_discount_needs_a_reason() {
let mut s = setup("late-discount");
let bill = s.bill("2026-02-01", "2026-03-03", "100.00");
let applications = |reason: Option<&str>| {
let mut a = json!([{"bill": bill, "amount": "98.00", "discount": "2.00"}]);
if let Some(reason) = reason {
a[0]["discount_reason"] = json!(reason);
}
a
};
let why = err(
&mut s.wire,
"books.pay_bill",
json!({"date": "2026-02-05", "paid_from": "1000", "applications": applications(None)}),
);
assert!(why.contains("needs a reason"), "{why}");
assert!(why.contains("discount_reason"), "{why}");
ok(
&mut s.wire,
"books.pay_bill",
json!({"date": "2026-02-05", "paid_from": "1000",
"applications": applications(Some("the vendor honoured it late"))}),
);
}
/// A fee posts gross (A-4): the deposit gets the net, the fee its expense,
/// and A/R is credited the gross (B-42 INVARIANT 1).
#[test]
fn a_fee_posts_gross_to_receivables_and_net_to_the_bank() {
let mut s = setup("fee-gross");
let invoice = s.invoice("2026-02-01", "2026-03-01", "100.00");
let out = ok(
&mut s.wire,
"books.receive_payment",
json!({"date": "2026-02-05", "deposit_to": "1000",
"invoice": invoice, "amount": "100.00",
"fee": {"amount": "3.00"}}),
);
assert_eq!(out["deposited"], json!("97.00"));
assert_eq!(out["status"], json!("paid"));
let entry = out["entry_id"].as_u64().unwrap();
assert_eq!(
s.line(entry, "1200"),
("credit".into(), "100.00".into(), "1200".into())
);
assert_eq!(
s.line(entry, "6060"),
("debit".into(), "3.00".into(), "6060".into())
);
assert_eq!(
s.line(entry, "1000"),
("debit".into(), "97.00".into(), "1000".into())
);
}
/// A bill paid by card is excluded from 1099-NEC (D-40): the worksheet
/// counts it as card, not as paid.
#[test]
fn card_paid_bill_is_not_1099_nec() {
let mut s = setup("card-1099");
ok(
&mut s.wire,
"books.add_instrument",
json!({"kind": "business_card", "label": "Visa", "last4": "4242", "account": "2050"}),
);
let bill = s.bill("2026-02-01", "2026-03-03", "100.00");
ok(
&mut s.wire,
"books.pay_bill",
json!({"date": "2026-02-05", "paid_from": "2050", "bill": bill, "amount": "100.00",
"instrument": "Visa"}),
);
let worksheet = ok(
&mut s.wire,
"books.vendor_1099",
json!({"year": 2026, "cash_accounts": ["1000"]}),
);
let line = worksheet["vendors"]
.as_array()
.unwrap()
.iter()
.find(|v| v["vendor_id"] == json!(s.vendor))
.unwrap();
assert_eq!(line["paid"], json!("0.00"), "{worksheet}");
assert_eq!(line["excluded_card"], json!("100.00"), "{worksheet}");
}
/// Two bills paid in one entry count once toward 1099s and the party's
/// totals (B-42; 8.3.16's multi-document risk).
#[test]
fn multi_document_payment_counts_once_for_1099_and_party_totals() {
let mut s = setup("multi-1099");
let first = s.bill("2026-02-01", "2026-03-03", "100.00");
let second = s.bill("2026-02-02", "2026-03-04", "200.00");
ok(
&mut s.wire,
"books.pay_bill",
json!({"date": "2026-02-05", "paid_from": "1000",
"applications": [
{"bill": first, "amount": "100.00"},
{"bill": second, "amount": "200.00"}
]}),
);
let worksheet = ok(
&mut s.wire,
"books.vendor_1099",
json!({"year": 2026, "cash_accounts": ["1000"]}),
);
let line = worksheet["vendors"]
.as_array()
.unwrap()
.iter()
.find(|v| v["vendor_id"] == json!(s.vendor))
.unwrap();
assert_eq!(line["paid"], json!("300.00"), "{worksheet}");
let parties = ok(&mut s.wire, "books.parties", json!({"year": 2026}));
let party = parties["parties"]
.as_array()
.unwrap()
.iter()
.find(|p| p["name"] == json!("Tobin Harlow Supply"))
.unwrap();
assert_eq!(party["paid"], json!("300.00"), "{parties}");
}
/// An overpayment is refused showing what the document owes and the
/// remedy for the excess (A-12, D-49).
#[test]
fn overpayment_refused_with_the_excess() {
let mut s = setup("overpayment");
let invoice = s.invoice("2026-02-01", "2026-03-01", "100.00");
let why = err(
&mut s.wire,
"books.receive_payment",
json!({"date": "2026-02-05", "deposit_to": "1000", "invoice": invoice, "amount": "150.00"}),
);
assert!(why.contains("150.00"), "{why}");
assert!(why.contains("100.00"), "{why}");
assert!(why.contains("excess"), "{why}");
assert!(why.contains("2300"), "{why}");
}
/// The bills-due list orders by due date and gives the running total
/// through each date; the agings' detail rows and their tie-out agree with
/// the control check (8.3.10; B-42).
#[test]
fn bills_due_orders_by_due_and_discount() {
let mut s = setup("bills-due");
s.bill("2026-02-01", "2026-02-20", "100.00");
s.bill("2026-02-02", "2026-02-10", "250.00");
s.bill("2026-02-03", "2026-03-10", "400.00");
let due = ok(
&mut s.wire,
"books.bills_due",
json!({"through": "2026-02-28", "as_of": "2026-02-05"}),
);
let dates: Vec<&str> = due["bills"]
.as_array()
.unwrap()
.iter()
.map(|b| b["due_date"].as_str().unwrap())
.collect();
assert_eq!(dates, ["2026-02-10", "2026-02-20"]);
assert_eq!(
due["by_date"],
json!([
{"date": "2026-02-10", "amount": "250.00"},
{"date": "2026-02-20", "amount": "350.00"}
])
);
// The discount fields exist only when the bill's terms give one, which
// S4.3 journals: without them they are absent, not zero.
assert!(due["bills"][0].get("discount_by").is_none());
let aging = ok(
&mut s.wire,
"books.ap_aging",
json!({"as_of": "2026-02-05", "detail": true}),
);
assert_eq!(aging["control"]["difference"], json!("0.00"), "{aging}");
assert_eq!(aging["control"]["documents_total"], json!("750.00"));
let rows = aging["documents"].as_array().unwrap();
assert_eq!(rows.len(), 3);
assert_eq!(rows[0]["ref"], json!(format!("bill:{}", 2)));
assert_eq!(rows[0]["bucket"], json!("current"));
// A/R is empty and still ties.
let ar = ok(
&mut s.wire,
"books.ar_aging",
json!({"as_of": "2026-02-05", "detail": true}),
);
assert_eq!(ar["control"]["balance"], json!("0.00"));
assert_eq!(ar["control"]["difference"], json!("0.00"));
assert!(ar.get("documents").is_none());
}
/// The aging exports are the same CSV the CPA package carries: one row per
/// document and a tie-out line, and the CPA package's CSVs tie to the
/// control account (8.3.10; ledger-package's test repeats the tie-out).
#[test]
fn the_aging_export_ties_out() {
let mut s = setup("aging-export");
let invoice = s.invoice("2026-02-01", "2026-03-01", "500.00");
ok(
&mut s.wire,
"books.receive_payment",
json!({"date": "2026-02-05", "deposit_to": "1000", "invoice": invoice, "amount": "200.00"}),
);
let out = ok(
&mut s.wire,
"books.export",
json!({"format": "csv", "report": "ar_aging", "as_of": "2026-02-28"}),
);
let csv = s.wire.fetch_text(&out["file"]);
let mut lines = csv.lines();
assert_eq!(
lines.next(),
Some(
"number,party,date,due_date,terms,total,paid,discounted,outstanding,bucket,days_overdue"
)
);
assert!(lines.next().unwrap().contains("500.00"));
let total = lines.next().unwrap();
assert!(total.starts_with("TOTAL,,,,,,,,"), "{total}");
assert!(total.contains("300.00"), "{total}");
assert!(total.contains("GL 1200 300.00"), "{total}");
assert!(total.ends_with("difference 0.00"), "{total}");
}
}
+2
View File
@@ -1222,6 +1222,8 @@ fn mcp_statement_pdfs_and_cpa_package() {
[
"1099-worksheet-2026.csv",
"README.txt",
"ap_aging.csv",
"ar_aging.csv",
"balance-sheet.pdf",
"balance-sheet.xlsx",
"cash-flow.pdf",
+6 -1
View File
@@ -887,6 +887,7 @@ fn happy_path(name: &str) -> Mcp {
);
m.ok("books.ar_aging", json!({"as_of": "2026-06-30"}));
m.ok("books.ap_aging", json!({"as_of": "2026-06-30"}));
m.ok("books.bills_due", json!({"through": "2026-06-30"}));
// P4b S1: a document voided, and the control accounts' tie-out.
let dup = m.ok(
"books.create_invoice",
@@ -1193,10 +1194,14 @@ fn happy_path(name: &str) -> Mcp {
("csv", "general_ledger"),
("json", "members_equity"),
("csv", "tax_summary"),
("csv", "ar_aging"),
("xlsx", "ar_aging"),
("pdf", "ap_aging"),
] {
m.ok(
"books.export",
json!({"format": format, "report": report, "start": "2026-01-01", "end": "2026-12-31"}),
json!({"format": format, "report": report, "start": "2026-01-01", "end": "2026-12-31",
"as_of": "2026-12-31"}),
);
}
// The IIF takes as_of (every posted entry from the first through it),
+112 -13
View File
@@ -425,6 +425,64 @@ impl PaymentDetails {
}
}
/// One document a settlement applies to (plan P4b S6; rules.md B-42): the
/// cash paid on it, the early-payment discount taken off it, and why a
/// discount outside its terms was taken anyway.
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Application {
/// The invoice or bill it applies to.
pub doc: DocRef,
/// The cash paid against it, positive.
pub cash: Decimal,
/// The early-payment discount taken, zero when none.
pub discount: Decimal,
/// Why a discount outside the document's terms was taken (a vendor who
/// honours a late discount): one line, journaled with the payment.
pub discount_reason: Option<String>,
}
/// A processor's fee withheld from a customer payment (plan P4b S6; A-4):
/// receivables are credited the gross, the fee goes to its expense
/// account, and the deposit account gets the net.
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Fee {
/// The fee, positive.
pub amount: Decimal,
/// The expense account it goes to; `None` is the
/// `payment_processing_fees` role's account.
pub account: Option<crate::AccountId>,
/// The processor, when the books know it as a vendor.
pub vendor: Option<VendorId>,
}
/// Everything one settlement needs (plan P4b S6; rules.md B-42): its date,
/// description, deposit account, the party every document belongs to, the
/// applications, and the processor's fee when one was withheld.
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct SettleParams {
/// The settlement's date.
pub date: NaiveDate,
/// The entry's description.
pub description: String,
/// The account the cash reaches (or leaves): a bank, a card, a payable
/// holding no role.
pub cash_account: crate::AccountId,
/// The customer or vendor every application names.
pub party: u64,
/// One or more documents, one party, one kind.
pub applications: Vec<Application>,
/// The processor's fee, on a customer payment only.
pub fee: Option<Fee>,
/// The payment method, when known (D-40).
pub instrument: Option<crate::InstrumentId>,
/// The processor's or bank's reference, when there is one.
pub reference: Option<String>,
}
/// One posted line a settlement's plan asks for, with the document it tags
/// when it is a control line ([`Application`]'s payment or discount).
pub type SettlementRow = (crate::AccountId, crate::Side, Decimal, Option<DocTag>);
/// How a document's payment terms count their days (rules.md B-39; plan
/// P4b S4.1): from the document's date, from the end of its month, or a
/// date the parties agreed.
@@ -1264,6 +1322,35 @@ impl AgingRow {
}
}
/// One document in an aging's detail: its figures and the bucket it falls
/// in (plan P4b S6, 8.3.10). Every figure is derived from its tagged lines
/// ([`crate::Ledger::doc_state`]).
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct AgingDocument {
/// The invoice or bill.
pub doc: DocRef,
/// The customer or vendor.
pub party: String,
/// Its own date.
pub date: NaiveDate,
/// When payment is due.
pub due_date: NaiveDate,
/// Its terms, as they print ("2/10 net 30"), when it has them.
pub terms: Option<String>,
/// The sum of its lines.
pub total: Decimal,
/// Cash paid that stands.
pub paid: Decimal,
/// Discounts taken that stand.
pub discounted: Decimal,
/// What it still owes as of the day.
pub outstanding: Decimal,
/// `current`, `days_30`, `days_60`, `days_90` or `days_90_plus`.
pub bucket: &'static str,
/// Days past its due date while something is owed; 0 otherwise.
pub days_overdue: i64,
}
/// Put an open balance in its aging bucket.
///
/// ```text
@@ -1296,23 +1383,35 @@ pub fn aging_bucket(due_date: NaiveDate, as_of: NaiveDate, balance: Decimal) ->
days_90: Decimal::ZERO,
days_90_plus: Decimal::ZERO,
};
if due_date >= as_of {
row.current = balance;
} else {
let days = (as_of - due_date).num_days();
if days <= 30 {
row.days_30 = balance;
} else if days <= 60 {
row.days_60 = balance;
} else if days <= 90 {
row.days_90 = balance;
} else {
row.days_90_plus = balance;
}
match bucket_key(due_date, as_of) {
"current" => row.current = balance,
"days_30" => row.days_30 = balance,
"days_60" => row.days_60 = balance,
"days_90" => row.days_90 = balance,
_ => row.days_90_plus = balance,
}
row
}
/// The aging bucket a document due `due_date` falls in as of `as_of`, by
/// the edges [`aging_bucket`] uses: `current` (due today is current),
/// `days_30`, `days_60`, `days_90` or `days_90_plus`.
pub fn bucket_key(due_date: NaiveDate, as_of: NaiveDate) -> &'static str {
if due_date >= as_of {
return "current";
}
let days = (as_of - due_date).num_days();
if days <= 30 {
"days_30"
} else if days <= 60 {
"days_60"
} else if days <= 90 {
"days_90"
} else {
"days_90_plus"
}
}
#[cfg(test)]
mod tests {
use super::*;
+72 -1
View File
@@ -676,9 +676,80 @@ pub enum LedgerError {
InvalidPaymentAmount(Decimal),
/// Payment exceeds the remaining balance.
#[error("payment of {0} exceeds remaining balance of {1}")]
#[error(
"payment of {0} exceeds remaining balance of {1}; the difference is the excess: record it as a plain entry to a customer-deposits liability (2300) and apply it later"
)]
Overpayment(Decimal, Decimal),
/// A settlement named no documents.
#[error("a settlement needs at least one invoice or bill")]
SettlementEmpty,
/// A settlement's documents aren't all invoices or all bills.
#[error("a settlement cannot mix invoices and bills: {0} is not the same kind as the others")]
SettlementMixedKinds(String),
/// A settlement's documents don't all belong to the one party it
/// names (rules.md B-42 INVARIANT 1).
#[error("{0} is not {1}'s: a settlement covers one party only")]
SettlementPartiesDiffer(String, u64),
/// A discount needs a reason: none is stated in the document's terms,
/// or it is larger than its terms allow, or it is taken after the
/// discount date (rules.md B-42 INVARIANT 2).
#[error(
"{doc}: the discount of {discount} needs a reason ({because}); pass discount_reason with the payment"
)]
DiscountNeedsReason {
/// The document.
doc: String,
/// The discount taken.
discount: Decimal,
/// Why the terms don't allow it as a matter of course.
because: String,
},
/// A discount on a bill whose lines include an asset or prepaid
/// account is refused: apportioning it across those lines is deferred
/// (D-49).
#[error(
"{doc} has a line on {code} \"{name}\" (an asset or prepaid account), so a discount on it cannot be apportioned (D-49): record the bill net of the discount, or reclassify by an entry Dr 6995 Purchase Discounts / Cr {code}"
)]
DiscountOnAssetBill {
/// The bill.
doc: String,
/// The asset line's account code.
code: String,
/// Its name.
name: String,
},
/// A settlement names the same document twice: each document takes one
/// application (its cash and its discount), so its bound is one bound.
#[error("{0} appears twice in one settlement: name it once, with all its cash and discount")]
SettlementDuplicateDocument(String),
/// A settlement's discount reason is not one line of at most
/// [`crate::arap::MAX_REFERENCE_CHARS`] characters.
#[error("a discount's reason is one line of at most {0} characters")]
InvalidDiscountReason(usize),
/// A processor's fee is a customer payment's only: a bill is paid from
/// the company's own money, with no processor taking a cut.
#[error("a processor's fee belongs on a customer payment, not on paying a bill")]
FeeOnBill,
/// A fee's amount or account the books can't take: the message says
/// why.
#[error("{0}")]
InvalidFee(String),
/// A settlement's figures can't be exact: the cash and discounts
/// don't cover the applications, or the fee leaves a negative deposit
/// (rules.md B-42 INVARIANT 1).
#[error("{0}")]
InvalidSettlement(String),
/// A payment's details were refused (its reference): the message says
/// why.
#[error("{0}")]
+57
View File
@@ -269,6 +269,63 @@ pub fn discount_max<T: Amount>(total: T, percent_bp: u32) -> Option<T> {
total.checked_mul(bp)?.checked_div_exact(ten_thousand)
}
/// What a settlement of one or more documents comes to: the applications'
/// total (cash plus discounts taken) and what reaches the deposit account
/// (the cash less the processor's fee).
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub struct Settlement<T> {
/// Σ cash + Σ discounts: what the settlement applies to the documents.
pub applications_total: T,
/// Σ cash − fee: what the deposit account receives (never negative).
pub deposit: T,
}
/// The arithmetic of a settlement (rules.md B-42; plan P4b S6): each
/// document's cash and discount, and the processor's fee withheld from the
/// cash that reaches the bank.
///
/// ```text
/// GOAL: a settlement is exact: what the documents are settled by is the
/// cash plus the discounts, and the deposit is the cash less the fee.
/// SOURCE: docs/spec/rules.md B-42; plan/served.md 8.3.6, 8.3.13 (B-42);
/// CONVENTION; DECISION: the gross method (A-8) and the fee's
/// gross presentation (A-4).
/// INVARIANTS:
/// 1. Some(s): s.applications_total = Σ cash + Σ discounts and
/// s.deposit = Σ cash − fee, exactly, with s.deposit >= 0.
/// 2. None on overflow, a negative amount, a negative fee, a fee above
/// the cash, or arrays of different lengths: never a wrapped or
/// rounded figure.
/// ```
pub fn settle<T: Amount>(cash: &[T], discounts: &[T], fee: T) -> Option<Settlement<T>> {
if cash.len() != discounts.len() || fee < T::ZERO {
return None;
}
let mut total_cash = T::ZERO;
for &amount in cash {
if amount < T::ZERO {
return None;
}
total_cash = total_cash.checked_add(amount)?;
}
let mut total_discounts = T::ZERO;
for &amount in discounts {
if amount < T::ZERO {
return None;
}
total_discounts = total_discounts.checked_add(amount)?;
}
let applications_total = total_cash.checked_add(total_discounts)?;
let deposit = total_cash.checked_sub(fee)?;
if deposit < T::ZERO {
return None;
}
Some(Settlement {
applications_total,
deposit,
})
}
/// A document line's amount from its quantity and unit price: the exact
/// product, never rounded.
///
+648 -117
View File
@@ -91,6 +91,34 @@ pub const GENERAL_EXPENSES: ControlAccount = control(
"bill expense",
AccountType::Expense,
);
/// A control account: discounts given to customers (plan P4b S6, A-8; plan
/// 8.3.4): a debit-balance revenue account, the gross method's allowance
/// when a customer takes an early-payment discount.
pub const SALES_ALLOWANCES: ControlAccount = control(
"sales_allowances",
"4100",
"Refunds and Allowances",
"sales allowances",
AccountType::Revenue,
);
/// A control account: discounts taken from vendors (plan P4b S6, A-8): a
/// credit-balance expense account, the gross method's purchase discount.
pub const PURCHASE_DISCOUNTS: ControlAccount = control(
"purchase_discounts",
"6995",
"Purchase Discounts",
"purchase discounts",
AccountType::Expense,
);
/// A control account: the processor's fee on a payment received (plan P4b
/// S6, A-4): the gross presentation's fee expense.
pub const PAYMENT_PROCESSING_FEES: ControlAccount = control(
"payment_processing_fees",
"6060",
"Platform and Payment Processing Fees",
"payment processing fees",
AccountType::Expense,
);
/// A control account; see [`ControlAccount`].
pub const RETAINED_EARNINGS: ControlAccount = control(
"retained_earnings",
@@ -6223,6 +6251,415 @@ impl Ledger {
}
}
/// Settle one or more invoices or bills in one entry (plan P4b S6;
/// rules.md B-42): cash against each, an early-payment discount where
/// the document's terms allow it (or a reason says why), and the
/// processor's fee on a customer payment, posted gross.
///
/// ```text
/// GOAL: record a payment that settles several documents at once, with
/// the early-payment discounts and the processor's fee, exactly.
/// SOURCE: docs/spec/rules.md B-42; plan/served.md 8.3.6, 8.3.13;
/// CONVENTION; DECISION: the gross method (A-8) and the fee's
/// gross presentation (A-4).
/// INVARIANTS:
/// 1. Σ cash + Σ discounts = Σ applications and deposit = Σ cash −
/// fee (kernel::settle); one party per settlement.
/// 2. Each application's cash + discount ≤ what the document owes on
/// every day from the payment's date on.
/// 3. Posting rows: payment lines in application order, then the
/// discount lines, then the fee line, then the cash line, so a
/// journaled event's line indices are stable.
/// 4. A discount is at most kernel::discount_max(total, percent_bp)
/// and dated on or before terms.discount_by(date), else a reason
/// is required; a discount on a bill with an asset line is
/// refused (D-49); a fee is refused on a bill.
/// 5. A refusal MUST leave the books unchanged.
/// ```
pub fn settle(&mut self, params: arap::SettleParams) -> Result<EntryId, LedgerError> {
self.atomically(|l| l.settle_steps(params))
}
/// The lines [`Self::settle`] would post, after every check, in its
/// order (payment lines, discount lines, the fee line, the cash line).
/// A store journals exactly these before it mutates; it must have
/// created the role accounts [`Self::settle`] would create first.
pub fn settlement_lines(
&self,
params: &arap::SettleParams,
) -> Result<Vec<arap::SettlementRow>, LedgerError> {
use arap::{DocRef, DocTag, Movement};
if params.applications.is_empty() {
return Err(LedgerError::SettlementEmpty);
}
let kind = match params.applications[0].doc {
DocRef::Invoice(_) => arap::DocumentKind::Invoice,
DocRef::Bill(_) => arap::DocumentKind::Bill,
};
let control = match kind {
arap::DocumentKind::Invoice => RECEIVABLES,
arap::DocumentKind::Bill => PAYABLES,
};
let discount_role = match kind {
arap::DocumentKind::Invoice => SALES_ALLOWANCES,
arap::DocumentKind::Bill => PURCHASE_DISCOUNTS,
};
for app in &params.applications {
let same = matches!(
(kind, app.doc),
(arap::DocumentKind::Invoice, DocRef::Invoice(_))
| (arap::DocumentKind::Bill, DocRef::Bill(_))
);
if !same {
return Err(LedgerError::SettlementMixedKinds(app.doc.to_string()));
}
let party = match app.doc {
DocRef::Invoice(id) => {
self.invoices
.get(&id)
.ok_or(LedgerError::UnknownInvoice(id))?
.customer_id
}
DocRef::Bill(id) => {
self.bills
.get(&id)
.ok_or(LedgerError::UnknownBill(id))?
.vendor_id
}
};
if party != params.party {
return Err(LedgerError::SettlementPartiesDiffer(
app.doc.to_string(),
params.party,
));
}
}
crate::calendar::check(params.date)?;
if let Some(pid) = self.closed_period_containing(params.date) {
return Err(LedgerError::ClosedPeriod(pid, params.date.to_string()));
}
let details = arap::PaymentDetails {
instrument: params.instrument,
reference: params.reference.clone(),
};
details.check()?;
if let Some(i) = params.instrument
&& !self.instruments.contains_key(&i)
{
return Err(LedgerError::UnknownInstrument(i));
}
self.check_controls(&[control])?;
self.check_payment_account(params.cash_account)?;
let control_account = self.role_account(&control).ok_or_else(|| {
LedgerError::InvalidSettlement(format!(
"{} has no account in these books yet",
control.role
))
})?;
let mut cash = Vec::with_capacity(params.applications.len());
let mut discounts = Vec::with_capacity(params.applications.len());
for (i, app) in params.applications.iter().enumerate() {
if params.applications[..i]
.iter()
.any(|earlier| earlier.doc == app.doc)
{
return Err(LedgerError::SettlementDuplicateDocument(
app.doc.to_string(),
));
}
if app.cash <= Decimal::ZERO {
return Err(LedgerError::InvalidPaymentAmount(app.cash));
}
if app.discount < Decimal::ZERO {
return Err(LedgerError::InvalidSettlement(format!(
"{}: a discount cannot be negative",
app.doc
)));
}
let (doc_date, _, _, total) = self.doc_header(app.doc)?;
if params.date < doc_date {
return Err(LedgerError::PaymentBeforeDocument {
date: params.date,
document_date: doc_date,
});
}
let room = self.payment_room(app.doc, params.date)?;
let applied = app.cash.checked_add(app.discount).ok_or_else(|| {
LedgerError::TooLargeToCompute(format!("{}'s settlement", app.doc))
})?;
if applied > room {
return Err(LedgerError::Overpayment(applied, room));
}
if let Some(reason) = &app.discount_reason
&& (reason.contains(['\n', '\r'])
|| reason.chars().count() > arap::MAX_REFERENCE_CHARS)
{
return Err(LedgerError::InvalidDiscountReason(
arap::MAX_REFERENCE_CHARS,
));
}
if app.discount > Decimal::ZERO {
self.check_discount(app, kind, total, doc_date, params.date)?;
}
cash.push(app.cash);
discounts.push(app.discount);
}
let fee_amount = params.fee.as_ref().map_or(Decimal::ZERO, |f| f.amount);
let settlement = kernel::settle(&cash, &discounts, fee_amount).ok_or_else(|| {
LedgerError::InvalidSettlement(
"the cash and discounts don't cover the applications exactly, or the fee is above the cash"
.into(),
)
})?;
if settlement.deposit <= Decimal::ZERO {
return Err(LedgerError::InvalidSettlement(
"the processor's fee can't take the whole payment: the deposit would be nothing"
.into(),
));
}
let any_discount = discounts.iter().any(|d| *d > Decimal::ZERO);
let mut total_discount = Decimal::ZERO;
for app in &params.applications {
if app.discount > Decimal::ZERO {
total_discount = total_discount
.checked_add(app.discount)
.ok_or_else(|| LedgerError::TooLargeToCompute("the discounts".into()))?;
}
}
let discount_account = if any_discount {
Some(self.role_account(&discount_role).ok_or_else(|| {
LedgerError::InvalidSettlement(format!(
"{} has no account in these books yet",
discount_role.role
))
})?)
} else {
None
};
let fee_account = match &params.fee {
None => None,
Some(fee) => Some(match fee.account {
Some(a) => {
self.check_line_account(a)?;
let account = self.chart.get(a).expect("check_line_account passed");
if account.account_type != AccountType::Expense || account.placeholder {
return Err(LedgerError::InvalidFee(format!(
"{} {} is not an expense account: the fee goes to an expense",
account.code, account.name
)));
}
a
}
None => {
self.check_controls(&[PAYMENT_PROCESSING_FEES])?;
self.role_account(&PAYMENT_PROCESSING_FEES).ok_or_else(|| {
LedgerError::InvalidSettlement(
"payment_processing_fees has no account in these books yet".into(),
)
})?
}
}),
};
let (control_side, discount_side, cash_side) = match kind {
arap::DocumentKind::Invoice => (Side::Credit, Side::Debit, Side::Debit),
arap::DocumentKind::Bill => (Side::Debit, Side::Credit, Side::Credit),
};
let mut rows: Vec<arap::SettlementRow> =
Vec::with_capacity(2 * params.applications.len() + 3);
for (app, cash) in params.applications.iter().zip(cash.iter()) {
rows.push((
control_account,
control_side,
*cash,
Some(DocTag {
doc: app.doc,
movement: Movement::Payment,
}),
));
}
for app in &params.applications {
if app.discount > Decimal::ZERO {
rows.push((
control_account,
control_side,
app.discount,
Some(DocTag {
doc: app.doc,
movement: Movement::Discount,
}),
));
}
}
if let Some(fee) = &params.fee {
rows.push((
fee_account.expect("a fee has its account"),
Side::Debit,
fee.amount,
None,
));
}
if let Some(account) = discount_account {
rows.push((account, discount_side, total_discount, None));
}
rows.push((params.cash_account, cash_side, settlement.deposit, None));
Ok(rows)
}
/// Refuse a discount the document's terms don't allow without a reason
/// ([`Self::settlement_lines`] SCENARIO 4), and a discount on a bill
/// with an asset or prepaid line (D-49).
fn check_discount(
&self,
app: &arap::Application,
kind: arap::DocumentKind,
total: Decimal,
doc_date: NaiveDate,
date: NaiveDate,
) -> Result<(), LedgerError> {
if kind == arap::DocumentKind::Bill
&& let arap::DocRef::Bill(id) = app.doc
&& let Some(bill) = self.bills.get(&id)
{
for line in &bill.lines {
let account = match line.account {
Some(a) => a,
None => continue,
};
if self
.chart
.get(account)
.is_some_and(|a| a.account_type == AccountType::Asset)
{
let a = self.chart.get(account).expect("checked above");
return Err(LedgerError::DiscountOnAssetBill {
doc: app.doc.to_string(),
code: a.code.clone(),
name: a.name.clone(),
});
}
}
}
let terms = match app.doc {
arap::DocRef::Invoice(id) => self.invoices.get(&id).and_then(|i| i.terms.clone()),
arap::DocRef::Bill(id) => self.bills.get(&id).and_then(|b| b.terms.clone()),
};
let (max, by) = match terms {
Some(t) => {
let max = t
.discount()
.and_then(|d| kernel::discount_max(total, d.percent_bp));
(max, t.discount_by(doc_date))
}
None => (None, None),
};
let within = max.is_some_and(|m| app.discount <= m) && by.is_some_and(|b| date <= b);
let has_reason = app
.discount_reason
.as_deref()
.is_some_and(|r| !r.trim().is_empty());
if !within && !has_reason {
let because = match (max, by) {
(None, _) => {
"its terms state no early-payment discount this version can bound".to_string()
}
(Some(m), _) if app.discount > m => {
format!("it is more than the terms' {m}")
}
(Some(_), None) => "its terms state no discount date".to_string(),
(Some(_), Some(b)) => format!("it is after the discount date {b}"),
};
return Err(LedgerError::DiscountNeedsReason {
doc: app.doc.to_string(),
discount: app.discount,
because,
});
}
Ok(())
}
/// Create the accounts a settlement posts to: the control role, the
/// discount role when a discount is taken, and the fee's default role.
fn ensure_settlement_accounts(
&mut self,
params: &arap::SettleParams,
) -> Result<(), LedgerError> {
let kind = match params.applications.first().map(|a| a.doc) {
Some(arap::DocRef::Bill(_)) => arap::DocumentKind::Bill,
_ => arap::DocumentKind::Invoice,
};
let control = match kind {
arap::DocumentKind::Invoice => RECEIVABLES,
arap::DocumentKind::Bill => PAYABLES,
};
self.check_controls(&[control])?;
self.ensure_control(&control);
if params
.applications
.iter()
.any(|a| a.discount > Decimal::ZERO)
{
let discount_role = match kind {
arap::DocumentKind::Invoice => SALES_ALLOWANCES,
arap::DocumentKind::Bill => PURCHASE_DISCOUNTS,
};
self.check_controls(&[discount_role])?;
self.ensure_control(&discount_role);
}
if let Some(fee) = &params.fee
&& fee.account.is_none()
{
self.check_controls(&[PAYMENT_PROCESSING_FEES])?;
self.ensure_control(&PAYMENT_PROCESSING_FEES);
}
Ok(())
}
/// [`Self::settle`]'s steps, run inside [`Self::atomically`].
fn settle_steps(&mut self, params: arap::SettleParams) -> Result<EntryId, LedgerError> {
self.ensure_settlement_accounts(&params)?;
let rows = self.settlement_lines(&params)?;
let description = if params.description.trim().is_empty() {
format!(
"Settlement of {} document{}",
params.applications.len(),
if params.applications.len() == 1 {
""
} else {
"s"
}
)
} else {
params.description.clone()
};
let entry = self.create_entry(params.date, &description);
for (account, side, amount, tag) in &rows {
let money = Money::new(*amount, self.base_currency);
match tag {
Some(tag) => self.add_tagged_line(entry, *account, *side, money, *tag)?,
None => self.add_line(entry, *account, *side, money)?,
}
}
self.post_entry(entry)?;
match params.applications[0].doc {
arap::DocRef::Invoice(_) => self.tag_customer(entry, params.party),
arap::DocRef::Bill(_) => self.tag_vendor(entry, params.party),
}
if params.instrument.is_some() {
self.set_entry_instrument(entry, params.instrument)?;
}
for app in &params.applications {
self.payment_events
.entry(app.doc)
.or_default()
.push(app.cash);
self.refresh_doc(app.doc);
}
Ok(entry)
}
/// Record a customer payment against an invoice. Posts: Dr Cash,
/// Cr A/R ([`Self::receive_payment_with`], with no payment method or
/// reference).
@@ -6276,14 +6713,25 @@ impl Ledger {
cash_account: AccountId,
details: &arap::PaymentDetails,
) -> Result<EntryId, LedgerError> {
self.atomically(|l| {
l.payment_steps(
arap::DocRef::Invoice(invoice_id),
date,
amount,
cash_account,
details,
)
let customer = self
.invoices
.get(&invoice_id)
.ok_or(LedgerError::UnknownInvoice(invoice_id))?
.customer_id;
self.settle(arap::SettleParams {
date,
description: details.description(&format!("Payment on invoice {invoice_id}")),
cash_account,
party: customer,
applications: vec![arap::Application {
doc: arap::DocRef::Invoice(invoice_id),
cash: amount,
discount: Decimal::ZERO,
discount_reason: None,
}],
fee: None,
instrument: details.instrument,
reference: details.reference.clone(),
})
}
@@ -6335,100 +6783,28 @@ impl Ledger {
cash_account: AccountId,
details: &arap::PaymentDetails,
) -> Result<EntryId, LedgerError> {
self.atomically(|l| {
l.payment_steps(
arap::DocRef::Bill(bill_id),
date,
amount,
cash_account,
details,
)
let vendor = self
.bills
.get(&bill_id)
.ok_or(LedgerError::UnknownBill(bill_id))?
.vendor_id;
self.settle(arap::SettleParams {
date,
description: details.description(&format!("Payment on bill {bill_id}")),
cash_account,
party: vendor,
applications: vec![arap::Application {
doc: arap::DocRef::Bill(bill_id),
cash: amount,
discount: Decimal::ZERO,
discount_reason: None,
}],
fee: None,
instrument: details.instrument,
reference: details.reference.clone(),
})
}
/// The steps of a payment ([`Self::receive_payment_with`],
/// [`Self::pay_bill_with`]), run inside [`Self::atomically`].
fn payment_steps(
&mut self,
doc: arap::DocRef,
date: NaiveDate,
amount: Decimal,
account: AccountId,
details: &arap::PaymentDetails,
) -> Result<EntryId, LedgerError> {
if amount <= Decimal::ZERO {
return Err(LedgerError::InvalidPaymentAmount(amount));
}
let (doc_date, ..) = self.doc_header(doc)?;
let room = self.payment_room(doc, date)?;
if amount > room {
return Err(LedgerError::Overpayment(amount, room));
}
if let Some(pid) = self.closed_period_containing(date) {
return Err(LedgerError::ClosedPeriod(pid, date.to_string()));
}
if date < doc_date {
return Err(LedgerError::PaymentBeforeDocument {
date,
document_date: doc_date,
});
}
details.check()?;
if let Some(i) = details.instrument
&& !self.instruments.contains_key(&i)
{
return Err(LedgerError::UnknownInstrument(i));
}
let role = match doc {
arap::DocRef::Invoice(_) => RECEIVABLES,
arap::DocRef::Bill(_) => PAYABLES,
};
self.check_controls(&[role])?;
// Every check before the entry exists: a refusal leaves no draft.
self.check_payment_account(account)?;
let control = self.ensure_control(&role);
let money = Money::new(amount, self.base_currency);
let tag = arap::DocTag {
doc,
movement: arap::Movement::Payment,
};
let entry = match doc {
arap::DocRef::Invoice(id) => {
let entry = self.create_entry(
date,
&details.description(&format!("Payment on invoice {id}")),
);
self.add_line(entry, account, Side::Debit, money)?;
self.add_tagged_line(entry, control, Side::Credit, money, tag)?;
entry
}
arap::DocRef::Bill(id) => {
let entry =
self.create_entry(date, &details.description(&format!("Payment on bill {id}")));
self.add_tagged_line(entry, control, Side::Debit, money, tag)?;
self.add_line(entry, account, Side::Credit, money)?;
entry
}
};
self.post_entry(entry)?;
match doc {
arap::DocRef::Invoice(id) => {
let customer = self.invoices[&id].customer_id;
self.tag_customer(entry, customer);
}
arap::DocRef::Bill(id) => {
let vendor = self.bills[&id].vendor_id;
self.tag_vendor(entry, vendor);
}
}
if details.instrument.is_some() {
self.set_entry_instrument(entry, details.instrument)?;
}
self.payment_events.entry(doc).or_default().push(amount);
self.refresh_doc(doc);
Ok(entry)
}
/// Void a document: reverse its own entry (B-9), described "Void
/// invoice 7: reason". It keeps its id (and, later, its number); its
/// status as of the void's date on is Void. Plain
@@ -6741,6 +7117,35 @@ impl Ledger {
}
}
/// Tag the line a new payment event names (plan P4b S6; rules.md B-42
/// INVARIANT 3): line `index` of `entry`, when it is on the role's
/// account, on the side the movement posts, untagged, and for `amount`.
/// Otherwise it stays untagged and the control check lists it; replay
/// never refuses (B-28).
fn tag_replayed_at(
&mut self,
entry: EntryId,
role: &ControlAccount,
index: usize,
amount: Decimal,
tag: arap::DocTag,
) {
let (Some(account), Some(e)) = (self.role_account(role), self.entries.get(&entry)) else {
return;
};
let side = match tag.movement {
arap::Movement::Origin => tag.doc.owed_side(),
_ => kernel::flip(tag.doc.owed_side()),
};
let matches = e
.lines()
.get(index)
.is_some_and(|l| l.account == account && l.side == side && l.amount.amount == amount);
if matches && !self.line_docs.contains_key(&(entry, index)) {
self.tag_line(entry, index, tag);
}
}
/// Record an invoice without posting: replay support for journaling
/// stores. The invoice's entry was already rebuilt from its own
/// `entry.created` / `entry.line_added` / `entry.posted` events; this
@@ -6917,6 +7322,24 @@ impl Ledger {
invoice_id: InvoiceId,
amount: Decimal,
entry_id: EntryId,
) -> Result<(), LedgerError> {
self.replay_invoice_payment_at(invoice_id, amount, entry_id, None, Decimal::ZERO, None)
}
/// [`Self::replay_invoice_payment`] with the line a new event names and
/// the discount it took (plan P4b S6; rules.md B-42 INVARIANT 3). A
/// line the event names but that can't be matched (no such line, the
/// wrong account or side, or already tagged) stays untagged, and the
/// control check lists it: replay never refuses (B-28).
#[doc(hidden)]
pub fn replay_invoice_payment_at(
&mut self,
invoice_id: InvoiceId,
amount: Decimal,
entry_id: EntryId,
line: Option<usize>,
discount: Decimal,
discount_line: Option<usize>,
) -> Result<(), LedgerError> {
let customer = self
.invoices
@@ -6924,15 +7347,30 @@ impl Ledger {
.ok_or(LedgerError::UnknownInvoice(invoice_id))?
.customer_id;
let doc = arap::DocRef::Invoice(invoice_id);
self.tag_replayed(
entry_id,
&RECEIVABLES,
Some(amount),
arap::DocTag {
doc,
movement: arap::Movement::Payment,
},
);
let payment = arap::DocTag {
doc,
movement: arap::Movement::Payment,
};
match line {
Some(line) => {
self.tag_replayed_at(entry_id, &RECEIVABLES, line, amount, payment);
}
None => self.tag_replayed(entry_id, &RECEIVABLES, Some(amount), payment),
}
if discount > Decimal::ZERO
&& let Some(line) = discount_line
{
self.tag_replayed_at(
entry_id,
&RECEIVABLES,
line,
discount,
arap::DocTag {
doc,
movement: arap::Movement::Discount,
},
);
}
self.tag_customer(entry_id, customer);
self.payment_events.entry(doc).or_default().push(amount);
self.refresh_doc(doc);
@@ -6947,6 +7385,21 @@ impl Ledger {
bill_id: BillId,
amount: Decimal,
entry_id: EntryId,
) -> Result<(), LedgerError> {
self.replay_bill_payment_at(bill_id, amount, entry_id, None, Decimal::ZERO, None)
}
/// [`Self::replay_bill_payment`] with the line a new event names and
/// the discount it took; as [`Self::replay_invoice_payment_at`].
#[doc(hidden)]
pub fn replay_bill_payment_at(
&mut self,
bill_id: BillId,
amount: Decimal,
entry_id: EntryId,
line: Option<usize>,
discount: Decimal,
discount_line: Option<usize>,
) -> Result<(), LedgerError> {
let vendor = self
.bills
@@ -6954,15 +7407,30 @@ impl Ledger {
.ok_or(LedgerError::UnknownBill(bill_id))?
.vendor_id;
let doc = arap::DocRef::Bill(bill_id);
self.tag_replayed(
entry_id,
&PAYABLES,
Some(amount),
arap::DocTag {
doc,
movement: arap::Movement::Payment,
},
);
let payment = arap::DocTag {
doc,
movement: arap::Movement::Payment,
};
match line {
Some(line) => {
self.tag_replayed_at(entry_id, &PAYABLES, line, amount, payment);
}
None => self.tag_replayed(entry_id, &PAYABLES, Some(amount), payment),
}
if discount > Decimal::ZERO
&& let Some(line) = discount_line
{
self.tag_replayed_at(
entry_id,
&PAYABLES,
line,
discount,
arap::DocTag {
doc,
movement: arap::Movement::Discount,
},
);
}
self.tag_vendor(entry_id, vendor);
self.payment_events.entry(doc).or_default().push(amount);
self.refresh_doc(doc);
@@ -7044,6 +7512,69 @@ impl Ledger {
Ok(rows)
}
/// One row per open document in an aging, as of `as_of` (plan P4b S6,
/// 8.3.10): the same figures the party rows sum, with the document's
/// own number, dates, terms and bucket. Invoices (`invoices` true) or
/// bills; due date first.
pub fn aging_documents(
&self,
as_of: NaiveDate,
invoices: bool,
) -> Result<Vec<arap::AgingDocument>, LedgerError> {
let mut out = Vec::new();
for doc in self.documents() {
let (name, date, due_date, terms) = match doc {
arap::DocRef::Invoice(id) if invoices => {
let i = &self.invoices[&id];
(
self.customers.get(&i.customer_id).map(|c| c.name.clone()),
i.date,
i.due_date,
i.terms.as_ref().map(|t| t.describe()),
)
}
arap::DocRef::Bill(id) if !invoices => {
let b = &self.bills[&id];
(
self.vendors.get(&b.vendor_id).map(|v| v.name.clone()),
b.date,
b.due_date,
b.terms.as_ref().map(|t| t.describe()),
)
}
_ => continue,
};
let Some(st) = self.doc_state(doc, as_of)? else {
continue;
};
if st.outstanding <= Decimal::ZERO {
continue;
}
out.push(arap::AgingDocument {
doc,
party: name.unwrap_or_default(),
date,
due_date,
terms,
total: st.total,
paid: st.paid,
discounted: st.discounted,
outstanding: st.outstanding,
bucket: arap::bucket_key(due_date, as_of),
days_overdue: st.overdue_days,
});
}
out.sort_by_key(|d| {
(
d.due_date,
match d.doc {
arap::DocRef::Invoice(id) | arap::DocRef::Bill(id) => id,
},
)
});
Ok(out)
}
// ------------------------------------------------------------------
// Bank reconciliation
// ------------------------------------------------------------------
+8 -6
View File
@@ -48,10 +48,11 @@ pub mod tax_capital;
pub use account::{Account, AccountId, AccountType, ChartOfAccounts, Side};
pub use arap::{
AgingRow, Bill, BillFields, BillId, ControlCheck, Customer, CustomerId, DocLine, DocRef,
DocState, DocStatus, DocTag, DocumentKind, DocumentLine, DocumentPartKey, DocumentStatus,
EarlyDiscount, Invoice, InvoiceFields, InvoiceId, Movement, PartySnapshot, PaymentDetails,
SendKind, Sent, SentVia, Terms, TermsKind, UnattachedLine, Vendor, VendorId,
AgingDocument, AgingRow, Application, Bill, BillFields, BillId, ControlCheck, Customer,
CustomerId, DocLine, DocRef, DocState, DocStatus, DocTag, DocumentKind, DocumentLine,
DocumentPartKey, DocumentStatus, EarlyDiscount, Fee, Invoice, InvoiceFields, InvoiceId,
Movement, PartySnapshot, PaymentDetails, SendKind, Sent, SentVia, SettleParams, SettlementRow,
Terms, TermsKind, UnattachedLine, Vendor, VendorId,
};
pub use assets::{
Asset, AssetBasis, AssetCorrection, AssetId, AssetStatus, BasisRule, DepreciationMethod,
@@ -76,8 +77,9 @@ pub use instruments::{Instrument, InstrumentId, InstrumentKind};
pub use journal::{EntryId, EntryStatus, JournalEntry, JournalLine};
pub use kernel::{EntryFlows, Flow};
pub use ledger::{
ControlAccount, GENERAL_EXPENSES, Ledger, PAYABLES, PAYROLL, RECEIVABLES, RETAINED_EARNINGS,
REVENUE, ReconciliationReport, UnclearedLine, control_account, control_accounts,
ControlAccount, GENERAL_EXPENSES, Ledger, PAYABLES, PAYMENT_PROCESSING_FEES, PAYROLL,
PURCHASE_DISCOUNTS, RECEIVABLES, RETAINED_EARNINGS, REVENUE, ReconciliationReport,
SALES_ALLOWANCES, UnclearedLine, control_account, control_accounts,
};
pub use money::{Currency, Money};
pub use parties::{Party, PartyField, PartyId, Role, TinFacts, TinType, W4Facts, W9Facts};
+32
View File
@@ -1928,6 +1928,38 @@ fn discount_max_is_bounded() {
kani::cover!(got.is_none(), "an exact bound finer than a whole cent");
}
/// `kernel::settle` is exact: the applications' total is the cash plus the
/// discounts, the deposit is the cash less the fee, and a fee above the
/// cash is refused rather than wrapped.
#[kani::proof]
fn settle_is_exact() {
const N: usize = 3;
let cash: [i32; N] = kani::any();
let discounts: [i32; N] = kani::any();
let fee: i32 = kani::any();
kani::assume(fee >= 0 && fee <= 3_000_000);
for i in 0..N {
kani::assume(cash[i] >= 0 && cash[i] <= 1_000_000);
kani::assume(discounts[i] >= 0 && discounts[i] <= 1_000_000);
}
let total_cash = cash[0] + cash[1] + cash[2];
let total_discounts = discounts[0] + discounts[1] + discounts[2];
let got = kernel::settle(&cash, &discounts, fee);
if fee <= total_cash {
let settlement = got.expect("no overflow under these bounds");
assert_eq!(settlement.applications_total, total_cash + total_discounts);
assert_eq!(settlement.deposit, total_cash - fee);
assert!(settlement.deposit >= 0);
} else {
assert!(got.is_none());
}
kani::cover!(
got.is_some() && discounts.iter().any(|d| *d > 0) && fee > 0 && fee < total_cash,
"a discount and a fee inside the cash"
);
kani::cover!(got.is_none(), "a fee above the cash");
}
/// `kernel::line_amount` is the exact product of a quantity and a unit
/// price: never a rounded amount, and None rather than an overflow.
#[kani::proof]
+21
View File
@@ -521,6 +521,27 @@ proptest! {
);
}
/// kernel::settle at i64 (what Kani's settle_is_exact proved) and at
/// Decimal agree: the same cash, discounts and fee give the same
/// applications total and deposit, and both refuse the same cases.
#[test]
fn settle_agrees(
cash in prop::collection::vec(0..=MAX_CENTS, 0..4),
discounts in prop::collection::vec(0..=MAX_CENTS, 0..4),
fee in 0..=MAX_CENTS,
) {
let narrow = kernel::settle(&cash, &discounts, fee);
let wide = kernel::settle(
&cash.iter().map(|&c| dec(c)).collect::<Vec<_>>(),
&discounts.iter().map(|&c| dec(c)).collect::<Vec<_>>(),
dec(fee),
);
prop_assert_eq!(
narrow.map(|s| (dec(s.applications_total), dec(s.deposit))),
wide.map(|s| (s.applications_total, s.deposit))
);
}
/// kernel::line_amount at i64 (what Kani's line_amount_is_exact
/// proved) and at Decimal agree: cents x cents at i64 is the same
/// product as dollars x dollars at Decimal, to four places.
@@ -3662,3 +3662,41 @@ fn a_government_selling_services_is_a_supplier() {
let line = cf.operating.iter().find(|l| l.entry == stamps).unwrap();
assert_eq!(line.class, Some(OperatingClass::OtherPayments));
}
/// A bill whose line is equipment, paid later: the payment's cash is
/// investing, through the bill's split (D-35; rules.md B-14), not
/// operating. Plan P4b S6 keeps this true when the bill is paid as part
/// of a settlement.
#[test]
fn equipment_bill_payment_is_investing_cash() {
use ledger_core::arap::{BillFields, DocumentLine};
let mut b = Books::new();
b.acct("1000", "Bank", AccountType::Asset);
b.acct("1500", "Equipment", AccountType::Asset);
b.acct("2000", "Accounts Payable", AccountType::Liability);
let bank = b.id("1000");
let equipment = b.id("1500");
let vendor = b.l.add_vendor("Tobin Harlow Supply").unwrap();
let bill =
b.l.create_bill_with(
vendor,
d(2026, 1, 10),
d(2026, 2, 9),
vec![DocumentLine {
description: "Laptop".into(),
amount: x("500.00"),
class_id: None,
account: Some(equipment),
quantity: None,
unit_price: None,
}],
BillFields::default(),
)
.unwrap();
b.l.pay_bill(bill, d(2026, 1, 20), x("500.00"), bank)
.unwrap();
let cf = b.cf(d(2026, 1, 1), d(2026, 1, 31), &["1000"], &[], &["1500"]);
assert_eq!(cf.cash_from_investing, -x("500.00"));
assert_eq!(cf.cash_from_operations, Decimal::ZERO);
assert_eq!(cf.net_change_in_cash, -x("500.00"));
}
+377
View File
@@ -1922,3 +1922,380 @@ fn duplicate_vendor_ref_refused_unless_a_reason_is_given() {
)
.unwrap();
}
// ---------------------------------------------------------------------------
// P4b S6: paying on terms (rules.md B-42)
// ---------------------------------------------------------------------------
/// A bill on "2/10 net 30", paid within the discount window: the gross
/// method's entry is Dr A/P the full amount, Cr purchase discounts what
/// was taken, Cr the bank the rest; the bill reads paid and discounted.
/// A discount larger than the terms allow needs a reason (B-42).
#[test]
fn bill_on_terms_with_discount() {
use ledger_core::{Application, DocRef, SettleParams};
let mut b = books();
let terms = Terms::parse("2/10 net 30").unwrap();
let on = d(2026, 4, 1);
let bill =
b.l.create_bill_with(
b.vendor,
on,
terms.due_date(on).unwrap(),
line("Paper", 10_000),
BillFields {
terms: Some(terms),
..BillFields::default()
},
)
.unwrap();
let entry =
b.l.settle(SettleParams {
date: d(2026, 4, 5),
description: "Bill 1, early".into(),
cash_account: b.bank,
party: b.vendor,
applications: vec![Application {
doc: DocRef::Bill(bill),
cash: cents(9_800),
discount: cents(200),
discount_reason: None,
}],
fee: None,
instrument: None,
reference: None,
})
.unwrap();
let lines = b.l.get_entry(entry).unwrap().lines();
assert_eq!(lines.len(), 4);
assert_eq!(
(lines[0].account, lines[0].side),
(b.account("2000"), Side::Debit)
);
assert_eq!(lines[0].amount.amount, cents(9_800));
assert_eq!(
(lines[1].account, lines[1].side),
(b.account("2000"), Side::Debit)
);
assert_eq!(lines[1].amount.amount, cents(200));
assert_eq!(
(lines[2].account, lines[2].side),
(b.account("6995"), Side::Credit)
);
assert_eq!(lines[2].amount.amount, cents(200));
assert_eq!((lines[3].account, lines[3].side), (b.bank, Side::Credit));
assert_eq!(lines[3].amount.amount, cents(9_800));
let st = b.state(DocRef::Bill(bill), d(2026, 4, 5));
assert_eq!(
(st.status, st.paid, st.discounted, st.outstanding),
(DocStatus::Paid, cents(9_800), cents(200), Decimal::ZERO)
);
assert_eq!(b.l.line_doc(entry, 0).unwrap().movement, Movement::Payment);
assert_eq!(b.l.line_doc(entry, 1).unwrap().movement, Movement::Discount);
b.ties(d(2026, 4, 5));
// 3% off is more than 2/10 allows: refused without a reason, taken
// with one (a vendor honouring it anyway).
let bill2 =
b.l.create_bill_with(
b.vendor,
on,
Terms::parse("2/10 net 30").unwrap().due_date(on).unwrap(),
line("Paper", 10_000),
BillFields {
terms: Some(Terms::parse("2/10 net 30").unwrap()),
..BillFields::default()
},
)
.unwrap();
let params = |reason: Option<String>| SettleParams {
date: d(2026, 4, 6),
description: "Bill 2, late".into(),
cash_account: b.bank,
party: b.vendor,
applications: vec![Application {
doc: DocRef::Bill(bill2),
cash: cents(9_700),
discount: cents(300),
discount_reason: reason,
}],
fee: None,
instrument: None,
reference: None,
};
assert!(matches!(
b.l.settle(params(None)),
Err(LedgerError::DiscountNeedsReason { .. })
));
b.l.settle(params(Some("the vendor honoured 3%".into())))
.unwrap();
}
/// A discount taken after the discount date needs a reason (B-42
/// INVARIANT 2); a bill with an asset or prepaid line refuses one with the
/// D-49 remedy, and none of the refusals changes the books.
#[test]
fn late_discount_needs_a_reason() {
use ledger_core::{Application, DocRef, SettleParams};
let mut b = books();
let equipment =
b.l.add_account("1500", "Equipment", AccountType::Asset, None, false)
.unwrap();
let terms = Terms::parse("2/10 net 30").unwrap();
let on = d(2026, 4, 1);
let bill =
b.l.create_bill_with(
b.vendor,
on,
terms.due_date(on).unwrap(),
line("Paper", 10_000),
BillFields {
terms: Some(terms.clone()),
..BillFields::default()
},
)
.unwrap();
let late = |reason: Option<String>| SettleParams {
date: d(2026, 4, 20),
description: "Bill 1, late discount".into(),
cash_account: b.bank,
party: b.vendor,
applications: vec![Application {
doc: DocRef::Bill(bill),
cash: cents(9_800),
discount: cents(200),
discount_reason: reason,
}],
fee: None,
instrument: None,
reference: None,
};
assert!(matches!(
b.l.settle(late(None)),
Err(LedgerError::DiscountNeedsReason { .. })
));
b.l.settle(late(Some("the vendor honoured it late".into())))
.unwrap();
// A bill whose line is equipment: no apportioning (D-49).
let asset_bill =
b.l.create_bill_with(
b.vendor,
on,
terms.due_date(on).unwrap(),
vec![DocumentLine {
description: "Laptop".into(),
amount: cents(10_000),
class_id: None,
account: Some(equipment),
quantity: None,
unit_price: None,
}],
BillFields {
terms: Some(terms),
..BillFields::default()
},
)
.unwrap();
let before = b.l.doc_state(DocRef::Bill(asset_bill), d(2026, 4, 5));
let refused = b.l.settle(SettleParams {
date: d(2026, 4, 5),
description: "Laptop, discounted".into(),
cash_account: b.bank,
party: b.vendor,
applications: vec![Application {
doc: DocRef::Bill(asset_bill),
cash: cents(9_800),
discount: cents(200),
discount_reason: Some("vendor honoured it".into()),
}],
fee: None,
instrument: None,
reference: None,
});
match refused {
Err(LedgerError::DiscountOnAssetBill { code, .. }) => assert_eq!(code, "1500"),
other => panic!("expected DiscountOnAssetBill, got {other:?}"),
}
assert_eq!(
b.l.doc_state(DocRef::Bill(asset_bill), d(2026, 4, 5)),
before
);
assert_eq!(
b.state(DocRef::Bill(asset_bill), d(2026, 4, 5)).outstanding,
cents(10_000)
);
}
/// The processor's fee posts gross (A-4): Dr the bank the net, Dr the
/// processing-fee expense the fee, Cr A/R the gross; the invoice reads
/// paid and the deposit account has only the net.
#[test]
fn a_fee_posts_gross_to_receivables_and_net_to_the_bank() {
use ledger_core::{Application, DocRef, Fee, SettleParams};
let mut b = books();
let invoice = b.invoice(d(2026, 4, 1), 10_000);
let entry =
b.l.settle(SettleParams {
date: d(2026, 4, 3),
description: "Card payment, fee withheld".into(),
cash_account: b.bank,
party: b.customer,
applications: vec![Application {
doc: DocRef::Invoice(invoice),
cash: cents(10_000),
discount: Decimal::ZERO,
discount_reason: None,
}],
fee: Some(Fee {
amount: cents(300),
account: None,
vendor: None,
}),
instrument: None,
reference: None,
})
.unwrap();
let lines = b.l.get_entry(entry).unwrap().lines();
assert_eq!(lines.len(), 3);
assert_eq!(
(lines[0].account, lines[0].side),
(b.account("1200"), Side::Credit)
);
assert_eq!(lines[0].amount.amount, cents(10_000));
assert_eq!(
(lines[1].account, lines[1].side),
(b.account("6060"), Side::Debit)
);
assert_eq!(lines[1].amount.amount, cents(300));
assert_eq!((lines[2].account, lines[2].side), (b.bank, Side::Debit));
assert_eq!(lines[2].amount.amount, cents(9_700));
assert_eq!(
b.state(DocRef::Invoice(invoice), d(2026, 4, 3)).status,
DocStatus::Paid
);
assert_eq!(b.l.account_balance(b.bank).unwrap(), cents(9_700));
}
/// A payment that settles more than one document names its lines in
/// application order, and two applications on one document are refused:
/// each document's bound is one bound (B-42 INVARIANTS 1 and 2).
#[test]
fn a_settlement_names_its_lines_and_refuses_a_document_twice() {
use ledger_core::{Application, DocRef, SettleParams};
let mut b = books();
let first = b.invoice(d(2026, 4, 1), 10_000);
let second = b.invoice(d(2026, 4, 2), 5_000);
let entry =
b.l.settle(SettleParams {
date: d(2026, 4, 5),
description: "Two invoices, one deposit".into(),
cash_account: b.bank,
party: b.customer,
applications: vec![
Application {
doc: DocRef::Invoice(first),
cash: cents(10_000),
discount: Decimal::ZERO,
discount_reason: None,
},
Application {
doc: DocRef::Invoice(second),
cash: cents(5_000),
discount: Decimal::ZERO,
discount_reason: None,
},
],
fee: None,
instrument: None,
reference: None,
})
.unwrap();
let lines = b.l.get_entry(entry).unwrap().lines();
assert_eq!(lines.len(), 3);
assert_eq!(b.l.line_doc(entry, 0).unwrap().doc, DocRef::Invoice(first));
assert_eq!(b.l.line_doc(entry, 1).unwrap().doc, DocRef::Invoice(second));
assert!(b.l.line_doc(entry, 2).is_none());
assert_eq!(b.l.account_balance(b.bank).unwrap(), cents(15_000));
let thrice = b.invoice(d(2026, 4, 3), 10_000);
let before = b.l.account_balance(b.bank).unwrap();
let refused = b.l.settle(SettleParams {
date: d(2026, 4, 5),
description: "Twice".into(),
cash_account: b.bank,
party: b.customer,
applications: vec![
Application {
doc: DocRef::Invoice(thrice),
cash: cents(5_000),
discount: Decimal::ZERO,
discount_reason: None,
},
Application {
doc: DocRef::Invoice(thrice),
cash: cents(5_000),
discount: Decimal::ZERO,
discount_reason: None,
},
],
fee: None,
instrument: None,
reference: None,
});
assert!(matches!(
refused,
Err(LedgerError::SettlementDuplicateDocument(_))
));
assert_eq!(b.l.account_balance(b.bank).unwrap(), before);
}
/// A discount on a bill with an asset line is refused, never apportioned
/// (D-49): the refusal names the asset account and both remedies (record
/// the bill net, or reclassify Dr 6995 / Cr the asset).
#[test]
fn discount_on_an_asset_bill_is_refused_with_the_remedy() {
use ledger_core::{Application, DocRef, SettleParams};
let mut b = books();
let equipment =
b.l.add_account("1500", "Equipment", AccountType::Asset, None, false)
.unwrap();
let bill =
b.l.create_bill(
b.vendor,
d(2026, 4, 1),
d(2026, 5, 1),
vec![DocumentLine {
description: "Laptop".into(),
amount: cents(10_000),
class_id: None,
account: Some(equipment),
quantity: None,
unit_price: None,
}],
)
.unwrap();
match b.l.settle(SettleParams {
date: d(2026, 4, 5),
description: "Laptop, discounted".into(),
cash_account: b.bank,
party: b.vendor,
applications: vec![Application {
doc: DocRef::Bill(bill),
cash: cents(9_800),
discount: cents(200),
discount_reason: Some("the vendor honoured it".into()),
}],
fee: None,
instrument: None,
reference: None,
}) {
Err(LedgerError::DiscountOnAssetBill { code, .. }) => assert_eq!(code, "1500"),
other => panic!("expected DiscountOnAssetBill, got {other:?}"),
}
assert_eq!(
b.state(DocRef::Bill(bill), d(2026, 4, 5)).outstanding,
cents(10_000)
);
b.ties(d(2026, 4, 5));
}
+59 -38
View File
@@ -55,6 +55,7 @@ struct Item {
party: String,
date: NaiveDate,
due: NaiveDate,
terms: Option<ledger_core::Terms>,
state: Result<Option<DocState>, ledger_core::LedgerError>,
}
@@ -74,6 +75,7 @@ fn items(b: &Books, bills: bool) -> Vec<Item> {
.unwrap_or_default(),
date: d.date,
due: d.due_date,
terms: d.terms.clone(),
state: b.doc_today(DocRef::Bill(d.id)),
})
.collect()
@@ -89,6 +91,7 @@ fn items(b: &Books, bills: bool) -> Vec<Item> {
.unwrap_or_default(),
date: d.date,
due: d.due_date,
terms: d.terms.clone(),
state: b.doc_today(DocRef::Invoice(d.id)),
})
.collect()
@@ -282,26 +285,23 @@ pub fn show_list(ui: &mut Ui, b: &Books, bills: bool, shell: &mut Shell<'_>) {
return;
}
let amt = widgets::AMOUNT_MIN + 16.0;
let fixed = 110.0 + 104.0 * 2.0 + 120.0 + amt * 2.0;
let fixed = 110.0 + 104.0 * 2.0 + 120.0 + amt * 2.0 + if bills { 104.0 } else { 0.0 };
let w = ui.available_width().max(fixed + 160.0);
widgets::min_width(ui, "invoice_list", w, |ui| {
let head = |t: &str, cw: f32, right: bool| (t.to_string(), cw, right, p.muted);
row(
ui,
w,
&[
head("Document", 110.0, false),
head(if bills { "Vendor" } else { "Customer" }, 0.0, false),
head("Date", 104.0, false),
head("Due", 104.0, false),
head("Status", 120.0, false),
head("Total", amt, true),
head("Still owed", amt, true),
],
None,
true,
false,
);
let mut header = vec![
head("Document", 110.0, false),
head(if bills { "Vendor" } else { "Customer" }, 0.0, false),
head("Date", 104.0, false),
head("Due", 104.0, false),
head("Status", 120.0, false),
head("Total", amt, true),
head("Still owed", amt, true),
];
if bills {
header.push(head("Discount by", 104.0, false));
}
row(ui, w, &header, None, true, false);
widgets::rule(ui);
for it in rows {
let (status, total, owed, late) = match &it.state {
@@ -314,28 +314,49 @@ pub fn show_list(ui: &mut Ui, b: &Books, bills: bool, shell: &mut Shell<'_>) {
Ok(None) => ("Unknown".into(), String::new(), String::new(), false),
Err(_) => ("Can't compute".into(), String::new(), String::new(), false),
};
let discount_by = it.terms.as_ref().and_then(|t| t.discount_by(it.date));
let discount_open = bills && discount_by.is_some_and(|d| d >= b.today);
let discount_soon = discount_open
&& discount_by.is_some_and(|d| d <= b.today + chrono::Days::new(3));
let due_soon = bills
&& matches!(&it.state, Ok(Some(s))
if !s.outstanding.is_zero() && s.status != DocStatus::Void)
&& it.due <= b.today + chrono::Days::new(7);
let name = format!("{}, {}, {}, owes {}", it.name, it.party, status, owed);
let resp = row(
ui,
w,
&[
(it.name.clone(), 110.0, false, p.text),
(it.party.clone(), 0.0, false, p.text),
(fmt::date(it.date), 104.0, false, p.text),
(
fmt::date(it.due),
104.0,
false,
if late { p.warning } else { p.text },
),
(status, 120.0, false, if late { p.warning } else { p.muted }),
(total, amt, true, p.text),
(owed, amt, true, p.text),
],
None,
false,
true,
);
let mut cells = vec![
(it.name.clone(), 110.0, false, p.text),
(it.party.clone(), 0.0, false, p.text),
(fmt::date(it.date), 104.0, false, p.text),
(
fmt::date(it.due),
104.0,
false,
if late || due_soon { p.warning } else { p.text },
),
(
status.clone(),
120.0,
false,
if late { p.warning } else { p.muted },
),
(total, amt, true, p.text),
(owed, amt, true, p.text),
];
if bills {
cells.push((
discount_by.map(fmt::date).unwrap_or_default(),
104.0,
false,
if discount_soon {
p.warning
} else if discount_open {
p.text
} else {
p.muted
},
));
}
let resp = row(ui, w, &cells, None, false, true);
// Named in full, for assistive tech (and the tests).
resp.widget_info(|| {
egui::WidgetInfo::labeled(egui::WidgetType::Button, true, &name)
+2
View File
@@ -157,6 +157,8 @@ fn the_list_shows_the_ledgers_figures() {
);
let mut h = open(&dir, Route::Payables);
shot(&mut h, "payables");
// The Money out list carries the discount-deadline column (blank
// until terms are journaled, S4.3).
assert!(
h.query_by_label_contains("Bill 1, Clay Co, Open, owes 300.00")
.is_some()
+6
View File
@@ -307,6 +307,12 @@ pub fn chart_template(entity: EntityType, owners: &[String]) -> Result<ChartTemp
"expense",
Some("nondeductible"),
),
acct(
"6995",
"Purchase Discounts",
"expense",
Some("other_deductions"),
),
acct(
"7100",
"Employee Benefits",
@@ -6,3 +6,4 @@
- Only the owner can agree to the upgrade, with the owner passphrase: in the app, which asks each time it opens the books, or with `wanderbooks books upgrade ID` in a terminal. No tool can, and you never ask for, take or type the passphrase. Tell the human, in plain words: the books wait for their go-ahead, what was refused, and that saying no keeps the books working as they are.
- Before it upgrades, the server makes a backup of the books, their vault and keys included, and proves it whole; a backup that can't be made or proven upgrades nothing. Then the books move to the new format in one step, on the record.
- After the upgrade an older version of wanderbooks can't open these books; the backup made first keeps them as they were. Going back is the owner's choice, never yours.
- This upgrade is `documents_v2`: invoice numbers, terms and line accounts (S4), sent records (S5), payments that settle several documents with early-payment discounts and a processor's fee (S6), and write-offs (S7). Until it is given, those writes are refused and everything else works as before.
@@ -7,7 +7,7 @@ own figures are read from the ledger lines tagged with it, never kept on
the document: a reversed payment, a void or a write-off comes out right
without another copy to correct (B-38).
## Sending an invoice
## 1. Send an invoice
- The books never send mail, and never say they did. To send an invoice,
create and post it (`books.create_invoice`), hand its PDF to the human
@@ -26,3 +26,60 @@ without another copy to correct (B-38).
- A void invoice can't be marked sent: it should never have reached the
customer. An invoice already open, partly paid, paid or written off can
(a copy for the customer's records, a reminder).
## 2. Record a customer payment
- Ask for the date the money arrived, where it landed, and what it paid.
One deposit may settle several invoices of the same customer: pass
`applications` with each invoice and its cash amount.
- Record how it moved (`instrument`) and the processor's or bank's
reference. The books record payments; they never collect them.
- If the customer paid more than the invoices owe, the payment is
refused: record the excess as a plain entry to 2300 Customer Deposits
(no role) and apply it when the work is invoiced (D-49, A-12).
- A check or note marked "paid in full" of a disputed amount earns the
UCC §3-311 warning. Record only the payment; a lawyer or the payer's
agreement settles the rest.
## 3. Pay a vendor bill
- Ask for the date, the account it left, and which bills it pays. One
payment may settle several bills of one vendor (`applications`).
- Record the method and the reference. A card payment is tagged as card
and stays out of 1099-NEC (D-40).
- Use `books.bills_due` for what is due and when, with each vendor's
early-payment discount window.
### Taking an early-payment discount
- A bill on "2/10 net 30" takes 2% off if paid within ten days. Pass the
discount beside the cash (`discount`); the books post the gross method:
the bill is credited in full, the discount goes to Purchase Discounts
(6995), and the bank gets the rest.
- A discount at most the terms allow and dated on or before their
discount date needs no reason. A larger or later one needs
`discount_reason` (a vendor who honours it anyway); it is journaled.
- A bill with an asset or prepaid line refuses a discount: record the
bill net of the discount, or reclassify with an entry Dr 6995 Purchase
Discounts / Cr the asset account (D-49). Never split the discount across
the asset lines.
## 5. A processor's fee
- The books never charge or collect; a processor does, and keeps a fee.
Pass `fee` on `books.receive_payment` (amount, and optionally the
expense account and the processor's vendor).
- The entry is gross: Dr the deposit account the net, Dr the
processing-fee expense the fee, Cr Accounts Receivable the gross (A-4).
Only cash movements count toward a 1099, so the fee is not a payment to
the processor.
## A replacement payment arrives before a bounce is known
1. Park it: a plain entry Dr the bank / Cr 2300 Customer Deposits (no
role), described with the customer and what it is for.
2. When the first payment bounces, reverse it (`books.reverse_entry`)
dated the bounce day; it un-pays its invoices.
3. Apply the parked money with `books.receive_payment`,
`deposit_to: "2300"`, dated on or after the bounce, against the
invoices it pays. The 2300 balance returns to zero.
+4 -4
View File
@@ -79,6 +79,10 @@ pub const SECTIONS: &[(&str, &str)] = &[
include_str!("../handbook/parties-and-tins.md"),
),
("1099", include_str!("../handbook/1099.md")),
(
"invoices-and-bills",
include_str!("../handbook/invoices-and-bills.md"),
),
("cpa-handoff", include_str!("../handbook/cpa-handoff.md")),
(
"settings-and-conventions",
@@ -103,10 +107,6 @@ pub const SECTIONS: &[(&str, &str)] = &[
"tracing-figures",
include_str!("../handbook/tracing-figures.md"),
),
(
"invoices-and-bills",
include_str!("../handbook/invoices-and-bills.md"),
),
];
/// The resource URI of the handbook's index, and the prefix of a section's.
+2 -1
View File
@@ -56,7 +56,7 @@ const C: Needs = PostWhenConfirmed;
const K: Needs = PostForApprovalRules;
/// Every tool and what it needs (INVARIANT 1).
pub const TABLE: [(&str, Needs); 123] = [
pub const TABLE: [(&str, Needs); 124] = [
("books.handbook", R),
("books.start", R),
// Settings are committed at once: the settings commit of the plan.
@@ -173,6 +173,7 @@ pub const TABLE: [(&str, Needs); 123] = [
("books.document", R),
("books.ar_aging", R),
("books.ap_aging", R),
("books.bills_due", R),
("books.set_fx_rate", W),
("books.run_payroll", P),
("books.remit_payroll_taxes", P),
+3
View File
@@ -567,6 +567,7 @@ impl BooksServer {
+ Self::projects_router()
+ Self::documents_router()
+ Self::sent_router()
+ Self::settlements_router()
+ Self::entries_router()
+ Self::reports_router()
+ Self::assets_router()
@@ -1425,6 +1426,8 @@ mod schedules;
mod sent;
#[path = "tools/settings.rs"]
mod settings_tools;
#[path = "tools/settlements.rs"]
mod settlements;
#[path = "tools/tax.rs"]
mod tax;
+2 -1
View File
@@ -42,7 +42,7 @@ fn annotations_complete() {
const D: Hints = (Some(false), Some(true), None);
const WI: Hints = (Some(false), Some(false), Some(true));
const DI: Hints = (Some(false), Some(true), Some(true));
let table: [(&str, Hints); 123] = [
let table: [(&str, Hints); 124] = [
("books.handbook", R),
("books.start", R),
("books.set_setting", DI),
@@ -151,6 +151,7 @@ fn annotations_complete() {
("books.document", R),
("books.ar_aging", R),
("books.ap_aging", R),
("books.bills_due", R),
("books.set_fx_rate", W),
("books.run_payroll", D),
("books.remit_payroll_taxes", D),
+4 -189
View File
@@ -1,48 +1,13 @@
//! `books.documents`' group: the A/R and A/P documents (invoices and
//! bills), the payments and voids against them, the read tools
//! (`books.documents`, `books.document`), the control check and the
//! agings. Split whole out of `server.rs` (plan/served.md 8.2 U0a): the
//! tools, their names, descriptions and rules are unchanged
//! (`docs/mcp-interface.md`; rules.md B-38).
//! bills), their voids, the read tools (`books.documents`,
//! `books.document`) and the control check. Split whole out of
//! `server.rs` (plan/served.md 8.2 U0a); the payments and the agings live
//! in `tools/settlements.rs` (P4b S6).
use super::*;
use ledger_core::Terms;
use ledger_core::arap::{self, PartySnapshot};
/// A payment's method and reference from its parameters (the method by
/// id or label, books.instruments).
fn payment_details(
store: &Store,
p: &PaymentParams,
) -> Result<ledger_core::PaymentDetails, String> {
Ok(ledger_core::PaymentDetails {
instrument: p
.instrument
.as_deref()
.map(|r| resolve_instrument(store, r))
.transpose()?,
reference: p.reference.clone(),
})
}
/// What a payment tool answers: the document's figures after it, derived
/// from its lines that stand (rules.md B-38), as of the end of the books.
fn payment_out(
ledger: &Ledger,
doc: ledger_core::DocRef,
entry_id: u64,
) -> Result<Json<PaymentOut>, String> {
let st = ledger
.doc_state(doc, chrono::NaiveDate::MAX)
.map_err(|e| e.to_string())?
.ok_or_else(|| format!("{} not found", doc_label(doc)))?;
Ok(Json(PaymentOut {
entry_id,
remaining: money(st.outstanding),
status: st.status.key().to_string(),
}))
}
/// A document's id.
fn doc_id(doc: ledger_core::DocRef) -> u64 {
match doc {
@@ -71,14 +36,6 @@ fn movement_key(m: ledger_core::Movement) -> &'static str {
}
}
/// A document's kind and id for people ("invoice 7").
fn doc_label(doc: ledger_core::DocRef) -> String {
match doc {
ledger_core::DocRef::Invoice(id) => format!("invoice {id}"),
ledger_core::DocRef::Bill(id) => format!("bill {id}"),
}
}
/// An invoice's or bill's lines as the tool takes them: each amount
/// parsed, each project and account resolved ([`resolve_class`],
/// [`resolve_account`]), and quantity and unit price together, before
@@ -847,74 +804,6 @@ impl BooksServer {
}))
}
#[tool(
name = "books.receive_payment",
title = "Receive an invoice payment",
description = "Record a customer payment against an invoice. Posts Dr Cash / Cr A/R, the receivable line tagged with the invoice (its figures are derived from its lines that stand: a reversed payment no longer counts). Name instrument (how the money moved, books.instruments) and the processor's or bank's reference when known. The books record payments; they never collect them (D-45). Refused above what it owes, before its date, or into an account that isn't cash.",
annotations(
read_only_hint = false,
destructive_hint = true,
open_world_hint = false
)
)]
async fn receive_payment(
&self,
params: Parameters<PaymentParams>,
) -> Result<Json<PaymentOut>, String> {
let p = params.0;
let mut store = self.lock()?;
let cash = resolve_account(&store, &p.cash_account)?;
let details = payment_details(&store, &p)?;
let entry_id = store
.receive_payment_with(
p.document_id,
parse_date(&p.date)?,
parse_amount(&p.amount)?,
cash,
&details,
)
.map_err(|e| e.to_string())?;
payment_out(
store.ledger(),
ledger_core::DocRef::Invoice(p.document_id),
entry_id,
)
}
#[tool(
name = "books.pay_bill",
title = "Pay a bill",
description = "Record a payment of a vendor bill. Posts Dr A/P / Cr Cash, the payable line tagged with the bill (its figures are derived from its lines that stand: a reversed payment no longer counts). Name instrument (how the money moved, books.instruments: a card payment is left out of 1099-NEC) and the payment's reference when known. The books record payments; they never make them (D-45). Refused above what it owes, before its date, or from an account that isn't cash.",
annotations(
read_only_hint = false,
destructive_hint = true,
open_world_hint = false
)
)]
async fn pay_bill(
&self,
params: Parameters<PaymentParams>,
) -> Result<Json<PaymentOut>, String> {
let p = params.0;
let mut store = self.lock()?;
let cash = resolve_account(&store, &p.cash_account)?;
let details = payment_details(&store, &p)?;
let entry_id = store
.pay_bill_with(
p.document_id,
parse_date(&p.date)?,
parse_amount(&p.amount)?,
cash,
&details,
)
.map_err(|e| e.to_string())?;
payment_out(
store.ledger(),
ledger_core::DocRef::Bill(p.document_id),
entry_id,
)
}
#[tool(
name = "books.void_document",
title = "Void an invoice or bill",
@@ -1229,78 +1118,4 @@ impl BooksServer {
let checks = ledger.control_check(as_of).map_err(|e| e.to_string())?;
Ok(Json(control_check_out(ledger, as_of, &checks)))
}
#[tool(
name = "books.ar_aging",
title = "Receivables aging",
description = described(
"A/R aging report as of a date: outstanding balances per customer, bucketed by days past due (current, 30, 60, 90, 90+).",
ledger_core::calendar::PeriodKind::AsOf
),
annotations(read_only_hint = true, open_world_hint = false)
)]
async fn ar_aging(&self, params: Parameters<AgingParams>) -> Result<Json<AgingOut>, String> {
let p = params.0;
let as_of = self.as_of(p.as_of.as_deref())?;
let store = self.lock()?;
let rows = store
.ledger()
.ar_aging(as_of)
.map_err(|e| e.to_string())?
.into_iter()
.map(|r| {
let total = r.total().map_err(|e| e.to_string())?.to_string();
Ok(AgingRowOut {
name: r.name,
current: money(r.current),
days_30: money(r.days_30),
days_60: money(r.days_60),
days_90: money(r.days_90),
days_90_plus: money(r.days_90_plus),
total,
})
})
.collect::<Result<_, String>>()?;
Ok(Json(AgingOut {
as_of: as_of.to_string(),
rows,
}))
}
#[tool(
name = "books.ap_aging",
title = "Payables aging",
description = described(
"A/P aging report as of a date: outstanding balances per vendor, bucketed by days past due (current, 30, 60, 90, 90+).",
ledger_core::calendar::PeriodKind::AsOf
),
annotations(read_only_hint = true, open_world_hint = false)
)]
async fn ap_aging(&self, params: Parameters<AgingParams>) -> Result<Json<AgingOut>, String> {
let p = params.0;
let as_of = self.as_of(p.as_of.as_deref())?;
let store = self.lock()?;
let rows = store
.ledger()
.ap_aging(as_of)
.map_err(|e| e.to_string())?
.into_iter()
.map(|r| {
let total = r.total().map_err(|e| e.to_string())?.to_string();
Ok(AgingRowOut {
name: r.name,
current: money(r.current),
days_30: money(r.days_30),
days_60: money(r.days_60),
days_90: money(r.days_90),
days_90_plus: money(r.days_90_plus),
total,
})
})
.collect::<Result<_, String>>()?;
Ok(Json(AgingOut {
as_of: as_of.to_string(),
rows,
}))
}
}
+55 -3
View File
@@ -848,7 +848,7 @@ impl BooksServer {
#[tool(
name = "books.export",
title = "Export a report",
description = "Export a report. Reports: profit_and_loss, balance_sheet, cash_flow (direct method, with its reconciliation and noncash schedules; needs cash_accounts), trial_balance (as_of), members_equity (multi-member LLC; members from the settings), tax_summary, general_ledger (by account: running balances, splits), general_journal (each entry posted in the period; alias journal), fixed_asset_register (as_of: every asset with tag, serial, cost, depreciation, book value, reconciled to the books). The file is handed over (run its download to save it; never its bytes). Formats: pdf and xlsx for the statements, tax_summary and fixed_asset_register; xlsx, csv, json for every report; iif for general_journal or journal (QuickBooks Desktop: plain ASCII text, CR LF; every posted entry from the first through as_of (start and end are refused), period closes left out, DOCNUM the entry id; names, numbers and memos fit QuickBooks' limits; warnings says what is written differently from the books, memos grouped, to tell the human). Dates: start/end for period reports (omitted: the fiscal year to date), as_of for balance_sheet, trial_balance, fixed_asset_register and iif (omitted: today).",
description = "Export a report. Reports: profit_and_loss, balance_sheet, cash_flow (direct method, with its reconciliation and noncash schedules; needs cash_accounts), trial_balance (as_of), members_equity (multi-member LLC; members from the settings), tax_summary, general_ledger (by account: running balances, splits), general_journal (each entry posted in the period; alias journal), fixed_asset_register (as_of: every asset with tag, serial, cost, depreciation, book value, reconciled to the books), ar_aging and ap_aging (as_of: one row per open invoice or bill, with a tie-out line to its control account). The file is handed over (run its download to save it; never its bytes). Formats: pdf and xlsx for the statements, tax_summary, fixed_asset_register and the agings; xlsx, csv, json for every report; iif for general_journal or journal (QuickBooks Desktop: plain ASCII text, CR LF; every posted entry from the first through as_of (start and end are refused), period closes left out, DOCNUM the entry id; names, numbers and memos fit QuickBooks' limits; warnings says what is written differently from the books, memos grouped, to tell the human). Dates: start/end for period reports (omitted: the fiscal year to date), as_of for balance_sheet, trial_balance, fixed_asset_register, ar_aging, ap_aging and iif (omitted: today).",
annotations(read_only_hint = true, open_world_hint = false)
)]
async fn export(&self, params: Parameters<ExportParams>) -> Result<Json<ExportOut>, String> {
@@ -911,9 +911,11 @@ impl BooksServer {
"fixed_asset_register" => {
self.export_fixed_asset_register(&format, p.as_of.as_deref())?
}
"ar_aging" => self.export_aging(&format, true, p.as_of.as_deref())?,
"ap_aging" => self.export_aging(&format, false, p.as_of.as_deref())?,
_ => {
return Err(format!(
"bad report {:?}: expected general_journal, general_ledger, trial_balance, profit_and_loss, balance_sheet, cash_flow, members_equity, tax_summary, or fixed_asset_register",
"bad report {:?}: expected general_journal, general_ledger, trial_balance, profit_and_loss, balance_sheet, cash_flow, members_equity, tax_summary, fixed_asset_register, ar_aging, or ap_aging",
p.report
));
}
@@ -1205,14 +1207,64 @@ impl BooksServer {
.map_err(|e| e.to_string())?;
report::members_equity(&me)
}
"ar_aging" => {
ledger_package::aging_statement(ledger, true, self.as_of(p.as_of.as_deref())?)
.map_err(|e| e.to_string())?
}
"ap_aging" => {
ledger_package::aging_statement(ledger, false, self.as_of(p.as_of.as_deref())?)
.map_err(|e| e.to_string())?
}
_ => {
return Err(format!(
"bad report {report:?}: expected profit_and_loss, balance_sheet, cash_flow, trial_balance, members_equity, or tax_summary"
"bad report {report:?}: expected profit_and_loss, balance_sheet, cash_flow, trial_balance, members_equity, tax_summary, ar_aging, or ap_aging"
));
}
})
}
/// The receivables or payables aging as CSV or JSON (plan P4b S6,
/// 8.3.10): one row per open document, then the tie-out line; the
/// same CSV the CPA package carries.
fn export_aging(
&self,
format: &str,
invoices: bool,
as_of: Option<&str>,
) -> Result<String, String> {
let as_of = self.as_of(as_of)?;
let store = self.lock()?;
if format == "json" {
let docs = store
.ledger()
.aging_documents(as_of, invoices)
.map_err(|e| e.to_string())?;
let rows: Vec<serde_json::Value> = docs
.iter()
.map(|d| {
serde_json::json!({
"number": match d.doc {
ledger_core::DocRef::Invoice(id) => store.ledger().get_invoice(id).and_then(|i| i.number.clone()),
ledger_core::DocRef::Bill(id) => store.ledger().get_bill(id).and_then(|b| b.vendor_ref.clone()),
},
"party": d.party,
"date": d.date.to_string(),
"due_date": d.due_date.to_string(),
"terms": d.terms,
"total": money(d.total),
"paid": money(d.paid),
"discounted": money(d.discounted),
"outstanding": money(d.outstanding),
"bucket": d.bucket,
"days_overdue": d.days_overdue,
})
})
.collect();
return serde_json::to_string_pretty(&rows).map_err(|e| e.to_string());
}
ledger_package::aging_csv(store.ledger(), invoices, as_of)
}
/// Render a report to XLSX bytes via ledger-import.
fn export_xlsx(&self, report: &str, p: &ExportParams) -> Result<Vec<u8>, String> {
use ledger_import::{XlsxReport, report_to_xlsx};
+557
View File
@@ -0,0 +1,557 @@
//! `books.receive_payment`, `books.pay_bill`, `books.bills_due` and the
//! agings: paying on terms (plan P4b S6; rules.md B-42). A payment settles
//! one or several invoices (or bills) of one party, with the early-payment
//! discounts their terms allow and the processor's fee on a customer
//! payment posted gross. Split from `tools/documents.rs` so S4.4's work
//! there and this slice's do not collide (plan/served.md 8.2 P4b S6).
use super::*;
/// A document as the payment tools and the agings name it ("invoice:7",
/// "bill:12").
fn doc_ref_text(doc: ledger_core::DocRef) -> String {
match doc {
ledger_core::DocRef::Invoice(id) => format!("invoice:{id}"),
ledger_core::DocRef::Bill(id) => format!("bill:{id}"),
}
}
/// A document's number, when the books have one: an invoice's issued
/// number, or a bill's vendor invoice number.
fn doc_number(ledger: &Ledger, doc: ledger_core::DocRef) -> Option<String> {
match doc {
ledger_core::DocRef::Invoice(id) => ledger.get_invoice(id).and_then(|i| i.number.clone()),
ledger_core::DocRef::Bill(id) => ledger.get_bill(id).and_then(|b| b.vendor_ref.clone()),
}
}
/// A document's party (the customer of an invoice, the vendor of a bill).
fn doc_party(ledger: &Ledger, doc: ledger_core::DocRef) -> Result<u64, String> {
match doc {
ledger_core::DocRef::Invoice(id) => ledger
.get_invoice(id)
.map(|i| i.customer_id)
.ok_or_else(|| format!("no invoice {id}: see books.documents")),
ledger_core::DocRef::Bill(id) => ledger
.get_bill(id)
.map(|b| b.vendor_id)
.ok_or_else(|| format!("no bill {id}: see books.documents")),
}
}
/// The one id a payment tool's single form names: `invoice`/`bill`, or
/// the older `document_id`. Both at once is refused unless they agree.
fn single_document(primary: Option<u64>, alias: Option<u64>, what: &str) -> Result<u64, String> {
match (primary, alias) {
(Some(a), Some(b)) if a != b => Err(format!(
"pass {what} or document_id, not both: {} and {b} differ",
a
)),
(Some(id), _) | (None, Some(id)) => Ok(id),
(None, None) => Err(format!(
"pass {what} (or an applications list): see books.documents"
)),
}
}
/// The one account a payment tool's single form names: `deposit_to`/
/// `paid_from`, or the older `cash_account`.
fn single_account(
primary: &Option<String>,
alias: &Option<String>,
what: &str,
) -> Result<String, String> {
match (primary, alias) {
(Some(a), Some(b)) if a != b => Err(format!(
"pass {what} or cash_account, not both: {a:?} and {b:?} differ"
)),
(Some(a), _) | (None, Some(a)) => Ok(a.clone()),
(None, None) => Err(format!("pass {what} (or cash_account)")),
}
}
/// Every document a payment tool's parameters name, as the core takes
/// them: the single form (`invoice`/`bill` with `amount`) or the
/// applications list, never both.
fn applications(
store: &Store,
p: &PaymentParams,
invoices: bool,
) -> Result<Vec<ledger_core::Application>, String> {
if !p.applications.is_empty() {
if p.amount.is_some() {
return Err(
"pass amount with invoice or bill, or an applications list, not both".into(),
);
}
return p
.applications
.iter()
.map(|a| {
let (id, other) = if invoices {
(a.invoice, a.bill)
} else {
(a.bill, a.invoice)
};
if other.is_some() {
return Err(format!(
"an application names {} only, not {}",
if invoices { "invoice" } else { "bill" },
if invoices { "bill" } else { "invoice" }
));
}
let id = id.ok_or_else(|| {
format!(
"an application needs its {}",
if invoices { "invoice" } else { "bill" }
)
})?;
let doc = if invoices {
ledger_core::DocRef::Invoice(id)
} else {
ledger_core::DocRef::Bill(id)
};
// Refuse an unknown document here, before anything is
// journaled, with the list tool named.
doc_party(store.ledger(), doc)?;
Ok(ledger_core::Application {
doc,
cash: parse_amount(&a.amount)?,
discount: match &a.discount {
Some(d) => parse_amount(d)?,
None => Decimal::ZERO,
},
discount_reason: a.discount_reason.clone(),
})
})
.collect();
}
let id = single_document(
if invoices { p.invoice } else { p.bill },
p.document_id,
if invoices { "invoice" } else { "bill" },
)?;
let amount = p
.amount
.as_deref()
.ok_or_else(|| "pass amount (or an applications list)".to_string())?;
let doc = if invoices {
ledger_core::DocRef::Invoice(id)
} else {
ledger_core::DocRef::Bill(id)
};
doc_party(store.ledger(), doc)?;
Ok(vec![ledger_core::Application {
doc,
cash: parse_amount(amount)?,
discount: Decimal::ZERO,
discount_reason: None,
}])
}
/// The settlement one payment tool describes, and the warnings its
/// parameters add.
fn settlement(
store: &Store,
p: &PaymentParams,
invoices: bool,
) -> Result<(ledger_core::SettleParams, Vec<String>), String> {
if p.applications.is_empty() {
if invoices && p.bill.is_some() {
return Err("books.receive_payment takes invoice, not bill".into());
}
if !invoices && p.invoice.is_some() {
return Err("books.pay_bill takes bill, not invoice".into());
}
}
let apps = applications(store, p, invoices)?;
let first = apps
.first()
.ok_or_else(|| "a payment needs at least one invoice or bill".to_string())?
.doc;
let party = doc_party(store.ledger(), first)?;
let cash_account = resolve_account(
store,
&single_account(
if invoices {
&p.deposit_to
} else {
&p.paid_from
},
&p.cash_account,
if invoices { "deposit_to" } else { "paid_from" },
)?,
)?;
let details = ledger_core::PaymentDetails {
instrument: p
.instrument
.as_deref()
.map(|r| resolve_instrument(store, r))
.transpose()?,
reference: p.reference.clone(),
};
let count = apps.len();
let base = if invoices {
if count == 1 {
format!(
"Payment on invoice {}",
match first {
ledger_core::DocRef::Invoice(id) => id,
ledger_core::DocRef::Bill(_) => 0,
}
)
} else {
format!("Payment on {count} invoices")
}
} else if count == 1 {
format!(
"Payment on bill {}",
match first {
ledger_core::DocRef::Bill(id) => id,
ledger_core::DocRef::Invoice(_) => 0,
}
)
} else {
format!("Payment on {count} bills")
};
let mut description = details.description(&base);
if !invoices && p.fee.is_some() {
return Err("a processor's fee belongs on a customer payment, not on paying a bill".into());
}
let fee = match &p.fee {
None => None,
Some(fee) => {
let fee = ledger_core::Fee {
amount: parse_amount(&fee.amount)?,
account: fee
.account
.as_deref()
.map(|a| resolve_account(store, a))
.transpose()?,
vendor: fee
.vendor
.as_deref()
.map(|v| resolve_vendor(store, v))
.transpose()?,
};
if let Some(vendor) = fee.vendor
&& let Some(v) = store.ledger().get_vendor(vendor)
{
description = format!("{description} (processing fee to {})", v.name);
}
Some(fee)
}
};
let mut warnings = Vec::new();
if p.paid_in_full_marking {
warnings.push(
"The check or note is marked paid in full of a disputed amount. Cashing it may settle \
the whole claim (UCC §3-311): the books record only this payment; a lawyer or the \
payer's agreement settles the rest."
.to_string(),
);
}
Ok((
ledger_core::SettleParams {
date: parse_date(&p.date)?,
description,
cash_account,
party,
applications: apps,
fee,
instrument: details.instrument,
reference: details.reference,
},
warnings,
))
}
/// What a payment settled: each document's figures after it (derived from
/// its lines that stand, rules.md B-38) and what reached or left the
/// account.
fn payment_out(
ledger: &Ledger,
entry_id: u64,
params: &ledger_core::SettleParams,
) -> Result<Json<PaymentOut>, String> {
let mut documents = Vec::with_capacity(params.applications.len());
let mut deposited = Decimal::ZERO;
for app in &params.applications {
deposited += app.cash;
let st = ledger
.doc_state(app.doc, chrono::NaiveDate::MAX)
.map_err(|e| e.to_string())?
.ok_or_else(|| format!("{} not found", doc_ref_text(app.doc)))?;
documents.push(PaidDocumentOut {
r#ref: doc_ref_text(app.doc),
number: doc_number(ledger, app.doc),
outstanding: money(st.outstanding),
status: st.status.key().to_string(),
});
}
let fee = params.fee.as_ref().map_or(Decimal::ZERO, |f| f.amount);
deposited -= fee;
let (remaining, status) = match documents.as_slice() {
[one] => (Some(one.outstanding.clone()), Some(one.status.clone())),
_ => (None, None),
};
Ok(Json(PaymentOut {
entry_id,
documents,
deposited: money(deposited),
remaining,
status,
warnings: Vec::new(),
}))
}
#[tool_router(router = settlements_router, vis = "pub(super)")]
impl BooksServer {
#[tool(
name = "books.receive_payment",
title = "Receive a payment",
description = "Record a customer payment against one or several invoices of one customer. Posts Dr the deposit account (the cash less any processor fee), Dr payment-processing fees the fee, Dr sales allowances the discounts, Cr A/R for each invoice's cash and discount, each receivable line tagged with its invoice. An early-payment discount may be at most the invoice's terms allow and dated by their discount date; a later or larger one needs discount_reason. Name instrument (books.instruments) and the processor's reference. Refused above what an invoice owes, before its date, or into an account that is not cash. The books record payments; they never collect them (D-45).",
annotations(
read_only_hint = false,
destructive_hint = true,
open_world_hint = false
)
)]
async fn receive_payment(
&self,
params: Parameters<PaymentParams>,
) -> Result<Json<PaymentOut>, String> {
let p = params.0;
let mut store = self.lock()?;
let (settle, warnings) = settlement(&store, &p, true)?;
let entry_id = store.settle(settle.clone()).map_err(|e| e.to_string())?;
let mut out = payment_out(store.ledger(), entry_id, &settle)?.0;
out.warnings = warnings;
Ok(Json(out))
}
#[tool(
name = "books.pay_bill",
title = "Pay a bill",
description = "Record paying one or several vendor bills of one vendor. Posts Dr A/P for each bill's cash and discount, each payable line tagged with its bill; Cr the payer account the cash and purchase discounts the discounts. An early-payment discount may be at most the bill's terms allow and dated by their discount date; a later or larger one needs discount_reason, and a bill with an asset or prepaid line refuses one (record it net, or reclassify Dr 6995 / Cr the asset). Name instrument (books.instruments: a card payment is left out of 1099-NEC) and the reference. Refused above what a bill owes, before its date, or from an account that is not cash. The books record payments; they never make them (D-45).",
annotations(
read_only_hint = false,
destructive_hint = true,
open_world_hint = false
)
)]
async fn pay_bill(
&self,
params: Parameters<PaymentParams>,
) -> Result<Json<PaymentOut>, String> {
let p = params.0;
let mut store = self.lock()?;
let (settle, _) = settlement(&store, &p, false)?;
let entry_id = store.settle(settle.clone()).map_err(|e| e.to_string())?;
payment_out(store.ledger(), entry_id, &settle)
}
#[tool(
name = "books.bills_due",
title = "Bills due",
description = described(
"What to pay and when: every open bill due on or before a day (through; omitted: today), due date first, with its vendor, the vendor's invoice number and what it still owes, and the early-payment discount each vendor's terms give (the last day it is open, the most off, and what to pay to take it). by_date is the running total of what falls due through each date, for planning. The figures are read from the bills' ledger lines that stand (B-38).",
ledger_core::calendar::PeriodKind::AsOf
),
annotations(read_only_hint = true, open_world_hint = false)
)]
async fn bills_due(
&self,
params: Parameters<BillsDueParams>,
) -> Result<Json<BillsDueOut>, String> {
let p = params.0;
let as_of = self.as_of(p.as_of.as_deref())?;
let through = p
.through
.as_deref()
.map(parse_date)
.transpose()?
.unwrap_or_else(today);
let store = self.lock()?;
let ledger = store.ledger();
let mut bills: Vec<(DueBillOut, Decimal)> = Vec::new();
for bill in ledger.bills() {
let doc = ledger_core::DocRef::Bill(bill.id);
let Some(st) = ledger.doc_state(doc, as_of).map_err(|e| e.to_string())? else {
continue;
};
if st.outstanding <= Decimal::ZERO || bill.due_date > through {
continue;
}
let discounts = bill.terms.as_ref().and_then(|terms| {
let early = terms.discount()?;
let by = terms.discount_by(bill.date)?;
let max = ledger_core::kernel::discount_max(bill.total().ok()?, early.percent_bp)?;
Some((by, max))
});
let (discount_by, max_discount, pay) = match discounts {
Some((by, max)) if by >= as_of => (
Some(by.to_string()),
Some(money(max)),
Some(money(st.outstanding - max)),
),
_ => (None, None, None),
};
bills.push((
DueBillOut {
r#ref: doc_ref_text(doc),
vendor: ledger
.get_vendor(bill.vendor_id)
.map(|v| v.name.clone())
.unwrap_or_default(),
vendor_ref: bill.vendor_ref.clone(),
due_date: bill.due_date.to_string(),
outstanding: money(st.outstanding),
discount_by,
max_discount,
pay_by_discount_date_amount: pay,
},
st.outstanding,
));
}
bills.sort_by_key(|(b, _)| (b.due_date.clone(), b.r#ref.clone()));
let mut by_date = Vec::new();
let mut running = Decimal::ZERO;
for (bill, owed) in &bills {
running += owed;
match by_date.last_mut() {
Some(DueDateTotalOut { date, amount }) if *date == bill.due_date => {
*amount = money(running);
}
_ => by_date.push(DueDateTotalOut {
date: bill.due_date.clone(),
amount: money(running),
}),
}
}
Ok(Json(BillsDueOut {
as_of: as_of.to_string(),
through: through.to_string(),
bills: bills.into_iter().map(|(b, _)| b).collect(),
by_date,
}))
}
#[tool(
name = "books.ar_aging",
title = "Receivables aging",
description = described(
"A/R aging report as of a date: outstanding balances per customer, bucketed by days past due (current, 30, 60, 90, 90+), with the receivables account's tie-out (its balance against what its invoices owe, its lines no invoice's, the difference: always 0.00). detail: true adds one row per invoice, with its number, dates and terms.",
ledger_core::calendar::PeriodKind::AsOf
),
annotations(read_only_hint = true, open_world_hint = false)
)]
async fn ar_aging(&self, params: Parameters<AgingParams>) -> Result<Json<AgingOut>, String> {
aging(self, params.0, true)
}
#[tool(
name = "books.ap_aging",
title = "Payables aging",
description = described(
"A/P aging report as of a date: outstanding balances per vendor, bucketed by days past due (current, 30, 60, 90, 90+), with the payables account's tie-out (its balance against what its bills owe, its lines no bill's, the difference: always 0.00). detail: true adds one row per bill, with its number, dates and terms.",
ledger_core::calendar::PeriodKind::AsOf
),
annotations(read_only_hint = true, open_world_hint = false)
)]
async fn ap_aging(&self, params: Parameters<AgingParams>) -> Result<Json<AgingOut>, String> {
aging(self, params.0, false)
}
}
/// An aging of invoices (`invoices` true) or bills, with its tie-out.
fn aging(server: &BooksServer, p: AgingParams, invoices: bool) -> Result<Json<AgingOut>, String> {
let as_of = server.as_of(p.as_of.as_deref())?;
let store = server.lock()?;
let ledger = store.ledger();
let rows = if invoices {
ledger.ar_aging(as_of)
} else {
ledger.ap_aging(as_of)
}
.map_err(|e| e.to_string())?
.into_iter()
.map(|r| {
let total = r.total().map_err(|e| e.to_string())?.to_string();
Ok(AgingRowOut {
name: r.name,
current: money(r.current),
days_30: money(r.days_30),
days_60: money(r.days_60),
days_90: money(r.days_90),
days_90_plus: money(r.days_90_plus),
total,
})
})
.collect::<Result<Vec<_>, String>>()?;
let documents = if p.detail {
ledger
.aging_documents(as_of, invoices)
.map_err(|e| e.to_string())?
.into_iter()
.map(|d| {
Ok(AgingDocumentOut {
r#ref: doc_ref_text(d.doc),
number: doc_number(ledger, d.doc),
party: d.party,
date: d.date.to_string(),
due_date: d.due_date.to_string(),
terms: d.terms,
total: money(d.total),
paid: money(d.paid),
discounted: money(d.discounted),
outstanding: money(d.outstanding),
bucket: d.bucket.to_string(),
days_overdue: d.days_overdue,
})
})
.collect::<Result<Vec<_>, String>>()?
} else {
Vec::new()
};
let checks = ledger.control_check(as_of).map_err(|e| e.to_string())?;
let role = if invoices { "receivables" } else { "payables" };
let control = match checks.iter().find(|c| c.role == role) {
Some(check) => {
let account = ledger.chart().get(check.account);
AgingControlOut {
account: match account {
Some(a) => format!("{} {}", a.code, a.name),
None => String::new(),
},
balance: money(check.balance),
documents_total: money(check.documents_total),
unattached: check
.unattached
.iter()
.map(|u| UnattachedLineOut {
entry_id: u.entry,
line: u.line,
date: u.date.to_string(),
amount: money(u.amount),
})
.collect(),
difference: money(check.difference),
}
}
// No document of this kind has posted yet: nothing to tie out.
None => AgingControlOut {
account: String::new(),
balance: money(Decimal::ZERO),
documents_total: money(Decimal::ZERO),
unattached: Vec::new(),
difference: money(Decimal::ZERO),
},
};
Ok(Json(AgingOut {
as_of: as_of.to_string(),
rows,
documents,
control,
}))
}
+222 -12
View File
@@ -3170,17 +3170,73 @@ pub struct CreateBillParams {
pub confirmed: Option<bool>,
}
/// One invoice or bill a payment applies to (plan P4b S6; B-42).
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
#[serde(deny_unknown_fields)]
pub struct PaymentApplicationParam {
/// The invoice (books.receive_payment) or bill (books.pay_bill), by id.
#[serde(default)]
pub invoice: Option<u64>,
/// The bill (books.pay_bill), by id.
#[serde(default)]
pub bill: Option<u64>,
/// The cash paid against it, decimal string, positive.
pub amount: String,
/// An early-payment discount taken off it, decimal string.
#[serde(default)]
pub discount: Option<String>,
/// Why a discount outside the document's terms was taken (a late
/// discount the vendor honours): one line, recorded with the payment.
#[serde(default)]
pub discount_reason: Option<String>,
}
/// A processor's fee withheld from a customer payment (plan P4b S6; A-4).
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
#[serde(deny_unknown_fields)]
pub struct FeeParam {
/// The fee, decimal string, positive.
pub amount: String,
/// The expense account it goes to (id or code); omitted: the
/// payment-processing-fees role's account.
#[serde(default)]
pub account: Option<String>,
/// The processor, when the books know it as a vendor (id or name).
#[serde(default)]
pub vendor: Option<String>,
}
/// Parameters for `books.receive_payment` / `books.pay_bill`.
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct PaymentParams {
/// Invoice id (receive_payment) or bill id (pay_bill).
pub document_id: u64,
/// Invoice id (receive_payment) or bill id (pay_bill); the older name
/// of `invoice` / `bill`.
#[serde(default)]
pub document_id: Option<u64>,
/// The invoice, by id (books.receive_payment).
#[serde(default)]
pub invoice: Option<u64>,
/// The bill, by id (books.pay_bill).
#[serde(default)]
pub bill: Option<u64>,
/// Payment date, YYYY-MM-DD.
pub date: String,
/// Payment amount, decimal string.
pub amount: String,
/// Cash account id or code.
pub cash_account: String,
/// Payment amount, decimal string; with `invoice` or `bill` only. The
/// applications' amounts are the cash; a discount is beside it.
#[serde(default)]
pub amount: Option<String>,
/// Cash account id or code; the older name of `deposit_to` /
/// `paid_from`.
#[serde(default)]
pub cash_account: Option<String>,
/// The account the cash reaches (receive_payment): a bank or card that
/// holds no role.
#[serde(default)]
pub deposit_to: Option<String>,
/// The account the cash leaves (pay_bill): a bank, card or payable
/// that holds no role.
#[serde(default)]
pub paid_from: Option<String>,
/// How the money moved: a payment method's id or label
/// (`books.instruments`), tagged on the payment's entry in the same
/// call (D-40: a card payment is left out of 1099-NEC).
@@ -3191,6 +3247,34 @@ pub struct PaymentParams {
/// carried in the entry's description (D-45).
#[serde(default)]
pub reference: Option<String>,
/// Several invoices (receive_payment) or bills (pay_bill) settled by
/// one payment, one party.
#[serde(default)]
pub applications: Vec<PaymentApplicationParam>,
/// The processor's fee withheld from a customer payment (never on a
/// bill): receivables are credited the gross, the fee goes to expense,
/// the deposit account gets the net.
#[serde(default)]
pub fee: Option<FeeParam>,
/// A check or note marked "paid in full" for a disputed amount: adds a
/// warning under UCC §3-311 and records nothing else.
#[serde(default)]
pub paid_in_full_marking: bool,
}
/// One document a payment settled, after it.
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct PaidDocumentOut {
/// "invoice:7" or "bill:12".
pub r#ref: String,
/// Its number, when it has one ("INV-0007").
#[serde(default, skip_serializing_if = "Option::is_none")]
pub number: Option<String>,
/// What it still owes after the payment, decimal string.
pub outstanding: String,
/// Its status after it: open, partial, paid, written_off, void,
/// overpaid, or unattached.
pub status: String,
}
/// Output of `books.receive_payment` / `books.pay_bill`.
@@ -3198,12 +3282,22 @@ pub struct PaymentParams {
pub struct PaymentOut {
/// The payment journal entry's id.
pub entry_id: u64,
/// What the document still owes after it, decimal string (derived
/// from its lines that stand).
pub remaining: String,
/// The document's status after it: open, partial, paid, written_off,
/// void, overpaid, or unattached.
pub status: String,
/// Every document it settled, in application order.
pub documents: Vec<PaidDocumentOut>,
/// What reached (receive_payment) or left (pay_bill) the account: the
/// cash less a processor's fee, decimal string.
pub deposited: String,
/// What the single document still owes (the older shape; present when
/// one document was settled).
#[serde(default, skip_serializing_if = "Option::is_none")]
pub remaining: Option<String>,
/// The single document's status (the older shape).
#[serde(default, skip_serializing_if = "Option::is_none")]
pub status: Option<String>,
/// What to tell the human (a "paid in full" marking's UCC §3-311
/// warning).
#[serde(default, skip_serializing_if = "Vec::is_empty")]
pub warnings: Vec<String>,
}
/// Parameters for `books.documents`.
@@ -3449,6 +3543,10 @@ pub struct AgingParams {
#[serde(default)]
#[schemars(description = AS_OF_DOC)]
pub as_of: Option<String>,
/// Also one row per document, with its number, dates, terms and
/// bucket.
#[serde(default)]
pub detail: bool,
}
/// One row of an aging report.
@@ -3470,6 +3568,53 @@ pub struct AgingRowOut {
pub total: String,
}
/// One document in an aging's detail.
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct AgingDocumentOut {
/// "invoice:7" or "bill:12".
pub r#ref: String,
/// Its number, when it has one.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub number: Option<String>,
/// The customer or vendor.
pub party: String,
/// Its own date.
pub date: String,
/// When payment is due.
pub due_date: String,
/// Its terms, as they print ("2/10 net 30"), when it has them.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub terms: Option<String>,
/// The sum of its lines.
pub total: String,
/// Cash paid that stands.
pub paid: String,
/// Discounts taken that stand.
pub discounted: String,
/// What it still owes as of the day.
pub outstanding: String,
/// current, days_30, days_60, days_90 or days_90_plus.
pub bucket: String,
/// Days past its due date while something is owed; 0 otherwise.
pub days_overdue: i64,
}
/// The aging's account against its documents (the control check, B-23,
/// B-38 INVARIANT 1).
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct AgingControlOut {
/// "1200 Accounts Receivable" or "2000 Accounts Payable".
pub account: String,
/// Its ledger balance as of the day.
pub balance: String,
/// What its documents owe on it, together.
pub documents_total: String,
/// The lines on it that are no document's.
pub unattached: Vec<UnattachedLineOut>,
/// balance − documents_total − unattached: always 0.00.
pub difference: String,
}
/// Output of `books.ar_aging` / `books.ap_aging`.
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct AgingOut {
@@ -3477,6 +3622,71 @@ pub struct AgingOut {
pub as_of: String,
/// Rows, one per party with an outstanding balance.
pub rows: Vec<AgingRowOut>,
/// One row per open document, when `detail` was asked for.
#[serde(default, skip_serializing_if = "Vec::is_empty")]
pub documents: Vec<AgingDocumentOut>,
/// The account's tie-out.
pub control: AgingControlOut,
}
/// Parameters for `books.bills_due`.
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct BillsDueParams {
/// Show bills due on or before this day, YYYY-MM-DD (omitted: today).
#[serde(default)]
pub through: Option<String>,
/// As of this day for what each bill owes ([`AS_OF_DOC`]).
#[serde(default)]
#[schemars(description = AS_OF_DOC)]
pub as_of: Option<String>,
}
/// One bill to pay, with its discount window when its terms give one.
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct DueBillOut {
/// "bill:12".
pub r#ref: String,
/// The vendor.
pub vendor: String,
/// The vendor's own invoice number, when recorded.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub vendor_ref: Option<String>,
/// When payment is due.
pub due_date: String,
/// What it still owes as of the day.
pub outstanding: String,
/// The last day its early-payment discount is open, when it has one.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub discount_by: Option<String>,
/// The most its terms allow off, decimal string.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub max_discount: Option<String>,
/// What to pay to take the discount: the outstanding less the
/// discount, decimal string.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub pay_by_discount_date_amount: Option<String>,
}
/// One date's running total of what falls due through it.
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct DueDateTotalOut {
/// The due date.
pub date: String,
/// What falls due on or before it, together.
pub amount: String,
}
/// Output of `books.bills_due`.
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct BillsDueOut {
/// The day it is as of.
pub as_of: String,
/// The last day a bill is included for.
pub through: String,
/// Bills due by `through`, due date first.
pub bills: Vec<DueBillOut>,
/// The running total, one row per due date.
pub by_date: Vec<DueDateTotalOut>,
}
// ---------------------------------------------------------------------------
+216
View File
@@ -0,0 +1,216 @@
//! The receivables and payables agings as files (plan P4b S6, 8.3.10;
//! rules.md B-18, B-23): one row per open document, and a tie-out line
//! against the control account. The server's `books.export` and the CPA
//! package build the same CSV from this, and its XLSX/PDF from
//! [`aging_statement`], so a CPA's two copies can't differ.
use ledger_core::{DocRef, Ledger};
use rust_decimal::Decimal;
use crate::text::{csv_escape, money};
/// The CSV's header: one row per open document (8.3.10).
pub const AGING_CSV_HEADER: &str =
"number,party,date,due_date,terms,total,paid,discounted,outstanding,bucket,days_overdue";
/// One aging's rows and tie-out as CSV: the header, one row per open
/// invoice (`invoices` true) or bill, then `TOTAL,,,,,,,,<Σ
/// outstanding>,GL <account> <balance>,difference <difference>`.
pub fn aging_csv(
ledger: &Ledger,
invoices: bool,
as_of: chrono::NaiveDate,
) -> Result<String, String> {
let docs = ledger
.aging_documents(as_of, invoices)
.map_err(|e| e.to_string())?;
let mut out = String::from(AGING_CSV_HEADER);
out.push('\n');
let mut total = Decimal::ZERO;
for d in &docs {
total += d.outstanding;
out.push_str(&format!(
"{},{},{},{},{},{},{},{},{},{},{}\n",
csv_escape(&number(ledger, d.doc)),
csv_escape(&d.party),
d.date,
d.due_date,
csv_escape(d.terms.as_deref().unwrap_or("")),
money(d.total),
money(d.paid),
money(d.discounted),
money(d.outstanding),
d.bucket,
d.days_overdue,
));
}
let (code, balance, difference) = tie_out(ledger, invoices, as_of)?;
let account = if code.is_empty() {
"GL —".to_string()
} else {
format!("GL {code}")
};
out.push_str(&format!(
"TOTAL,,,,,,,,{total},{account} {balance},difference {difference}\n",
total = money(total),
balance = money(balance),
difference = money(difference),
));
Ok(out)
}
/// The same aging as a laid-out statement for XLSX and PDF: one line per
/// party with its six bucket amounts, the totals, and the tie-out.
pub fn aging_statement(
ledger: &Ledger,
invoices: bool,
as_of: chrono::NaiveDate,
) -> Result<ledger_import::Statement, String> {
use ledger_import::report::{Row, RowKind, Statement};
let party_rows = if invoices {
ledger.ar_aging(as_of)
} else {
ledger.ap_aging(as_of)
}
.map_err(|e| e.to_string())?;
let (code, balance, difference) = tie_out(ledger, invoices, as_of)?;
let columns: Vec<String> = ["Current", "1-30", "31-60", "61-90", "90+", "Total"]
.into_iter()
.map(str::to_string)
.collect();
let mut out_rows: Vec<Row> = vec![Row {
kind: RowKind::Section,
label: if invoices {
"Receivables".into()
} else {
"Payables".into()
},
amounts: vec![],
currency: false,
rule_above: false,
}];
let (mut current, mut d30, mut d60, mut d90, mut d90p) = (
Decimal::ZERO,
Decimal::ZERO,
Decimal::ZERO,
Decimal::ZERO,
Decimal::ZERO,
);
for r in &party_rows {
let total = r.total().map_err(|e| e.to_string())?;
current += r.current;
d30 += r.days_30;
d60 += r.days_60;
d90 += r.days_90;
d90p += r.days_90_plus;
out_rows.push(Row {
kind: RowKind::Line,
label: r.name.clone(),
amounts: vec![
Some(r.current),
Some(r.days_30),
Some(r.days_60),
Some(r.days_90),
Some(r.days_90_plus),
Some(total),
],
currency: false,
rule_above: false,
});
}
let total = current + d30 + d60 + d90 + d90p;
out_rows.push(Row {
kind: RowKind::Total,
label: "Total".into(),
amounts: vec![
Some(current),
Some(d30),
Some(d60),
Some(d90),
Some(d90p),
Some(total),
],
currency: true,
rule_above: true,
});
out_rows.push(Row {
kind: RowKind::Spacer,
label: String::new(),
amounts: vec![],
currency: false,
rule_above: false,
});
out_rows.push(Row {
kind: RowKind::Section,
label: "Tie-out".into(),
amounts: vec![],
currency: false,
rule_above: false,
});
out_rows.push(Row {
kind: RowKind::Line,
label: if code.is_empty() {
"GL balance".to_string()
} else {
format!("GL {code} balance")
},
amounts: vec![None, None, None, None, None, Some(balance)],
currency: false,
rule_above: false,
});
out_rows.push(Row {
kind: RowKind::Total,
label: "Difference".into(),
amounts: vec![None, None, None, None, None, Some(difference)],
currency: true,
rule_above: true,
});
Ok(Statement {
// Excel sheet names take no slash; the statement's title is the
// one both XLSX and PDF draw.
title: if invoices {
"AR Aging".into()
} else {
"AP Aging".into()
},
period: format!("As of {}", as_of.format("%B %-d, %Y")),
columns,
rows: out_rows,
percent_from: None,
})
}
/// The document's number for the aging's first column: an invoice's issued
/// number, a bill's vendor number, else the document's own name.
fn number(ledger: &Ledger, doc: DocRef) -> String {
match doc {
DocRef::Invoice(id) => ledger
.get_invoice(id)
.and_then(|i| i.number.clone())
.unwrap_or_else(|| format!("Invoice {id}")),
DocRef::Bill(id) => ledger
.get_bill(id)
.and_then(|b| b.vendor_ref.clone())
.unwrap_or_else(|| format!("Bill {id}")),
}
}
/// The control account's code, balance and difference as of the day
/// ([`Ledger::control_check`]): the aging's tie-out.
fn tie_out(
ledger: &Ledger,
invoices: bool,
as_of: chrono::NaiveDate,
) -> Result<(String, Decimal, Decimal), String> {
let role = if invoices { "receivables" } else { "payables" };
let checks = ledger.control_check(as_of).map_err(|e| e.to_string())?;
let Some(check) = checks.iter().find(|c| c.role == role) else {
return Ok((String::new(), Decimal::ZERO, Decimal::ZERO));
};
let code = ledger
.chart()
.get(check.account)
.map(|a| a.code.clone())
.unwrap_or_default();
Ok((code, check.balance, check.difference))
}
+2
View File
@@ -23,6 +23,7 @@
//! whichever [`PackageBooks`] they are read through.
//! ```
mod aging;
mod attention;
mod books;
mod iif;
@@ -34,6 +35,7 @@ mod text;
mod tins;
mod vendor_1099;
pub use aging::{AGING_CSV_HEADER, aging_csv, aging_statement};
pub use attention::{
Attention, Integrity, Report, Severity, Target, files_1099, find, find_with, reconcile_prompt,
w9_missing, w9_prompt,
+12 -1
View File
@@ -372,6 +372,17 @@ pub fn build_package<B: PackageBooks + ?Sized>(
files.push((format!("{name}.pdf"), pdf(st)?));
files.push((format!("{name}.xlsx"), xlsx(XlsxReport::Statement(st))?));
}
// The receivables and payables agings, each with its tie-out line to
// the control account (B-23, 8.3.10): the same CSV books.export and
// the viewer make.
files.push((
"ar_aging.csv".into(),
crate::aging::aging_csv(ledger, true, as_of)?.into_bytes(),
));
files.push((
"ap_aging.csv".into(),
crate::aging::aging_csv(ledger, false, as_of)?.into_bytes(),
));
// The fixed asset register, when an asset was acquired by as_of (one
// acquired later is not in it, so neither is an empty register).
if ledger
@@ -566,7 +577,7 @@ pub fn build_package<B: PackageBooks + ?Sized>(
let year_end = NaiveDate::from_ymd_opt(year, 12, 31) == Some(as_of);
let include_tins = tins.is_some();
let readme = format!(
"{name} — books package for the CPA\n\nFiscal year to date: {fy_start} through {as_of_s}. {basis} basis.\nKept in wanderbooks: double-entry books from an append-only, hash-chained journal ({seq} events, verified).\n\nStatements (PDF and XLSX): profit and loss, balance sheet, cash flow, {members}tax summary, trial balance.\nLedgers (XLSX): general ledger by account; general journal entry by entry.\n{iif}{worksheet}{k1}{receipts}{tins}\nThe tax summary maps accounts to return categories; it's a worksheet, not a filing. Questions go to the owners, who can ask their bookkeeping agent to trace any number to its entries and receipts.\n",
"{name} — books package for the CPA\n\nFiscal year to date: {fy_start} through {as_of_s}. {basis} basis.\nKept in wanderbooks: double-entry books from an append-only, hash-chained journal ({seq} events, verified).\n\nStatements (PDF and XLSX): profit and loss, balance sheet, cash flow, {members}tax summary, trial balance.\nLedgers (XLSX): general ledger by account; general journal entry by entry.\nAgings (CSV): ar_aging.csv and ap_aging.csv, one row per open invoice or bill, each ending with a TOTAL line that ties to its control account (B-23). Early-payment discounts are taken by the gross method (A-8); bad debts are written off directly (A-5).\n{iif}{worksheet}{k1}{receipts}{tins}\nThe tax summary maps accounts to return categories; it's a worksheet, not a filing. Questions go to the owners, who can ask their bookkeeping agent to trace any number to its entries and receipts.\n",
name = company.name,
basis = company.basis,
members = if company.members.is_empty() {
+81
View File
@@ -338,6 +338,8 @@ fn a_single_member_package_holds_the_documented_files_in_order() {
"tax-summary.xlsx".into(),
"trial-balance.pdf".into(),
"trial-balance.xlsx".into(),
"ar_aging.csv".into(),
"ap_aging.csv".into(),
"general-ledger.xlsx".into(),
"general-journal.xlsx".into(),
"1099-worksheet-2026.csv".into(),
@@ -2446,3 +2448,82 @@ fn the_k1_worksheet_reports_tax_basis_capital() {
// The book worksheet is the same as without assets' bases.
assert!(text(&p, "k1-members.csv").contains(",1685.00\n"));
}
/// The CPA package's aging CSVs are the agings, one row per open document
/// and a tie-out line that equals the control account (plan P4b S6,
/// 8.3.10; rules.md B-23, B-38 INVARIANT 1).
#[test]
fn the_aging_csvs_tie_to_the_control_check() {
let dir = tempfile::Builder::new()
.prefix("wb-package-aging-")
.tempdir()
.unwrap();
let mut s = Store::create(&dir.path().join("books-data"), Currency::USD).unwrap();
for (code, name, ty) in [
("1000", "Checking", AccountType::Asset),
("3000", "Capital", AccountType::Equity),
] {
s.add_account(code, name, ty, None, false).unwrap();
}
let bank = id_of(&s, "1000");
let customer = s.add_customer("Fernhill Labs").unwrap();
let vendor = s.add_vendor("Tobin Harlow Supply").unwrap();
let line = |what: &str, cents: i64| DocumentLine {
description: what.into(),
amount: Decimal::new(cents, 2),
class_id: None,
account: None,
quantity: None,
unit_price: None,
};
let invoice = s
.create_invoice(
customer,
d("2026-02-01"),
d("2026-03-01"),
vec![line("Consulting", 50_000)],
)
.unwrap();
let bill = s
.create_bill(
vendor,
d("2026-02-02"),
d("2026-03-04"),
vec![line("Paper", 20_000)],
)
.unwrap();
s.receive_payment(invoice, d("2026-02-10"), Decimal::new(20_000, 2), bank)
.unwrap();
s.pay_bill(bill, d("2026-02-11"), Decimal::new(10_000, 2), bank)
.unwrap();
let p = build_package(
&s,
&settings(&company(false), &cash()),
&request(false, None),
)
.unwrap();
for (name, role, code, balance) in [
("ar_aging.csv", "receivables", "1200", "300.00"),
("ap_aging.csv", "payables", "2000", "100.00"),
] {
let csv = text(&p, name);
let total = csv.lines().last().unwrap();
assert!(
total.starts_with("TOTAL,,,,,,,,300.00") || total.starts_with("TOTAL,,,,,,,,100.00")
);
assert!(
total.contains(&format!("GL {code} {balance}")),
"{name}: {total}"
);
assert!(total.ends_with("difference 0.00"), "{name}: {total}");
let check = s
.ledger()
.control_check(d("2026-12-31"))
.unwrap()
.into_iter()
.find(|c| c.role == role)
.unwrap();
assert_eq!(check.balance.to_string(), balance, "{name}");
assert_eq!(check.difference, Decimal::ZERO, "{name}");
}
}
+212 -101
View File
@@ -2914,26 +2914,6 @@ impl Store {
})
}
/// Journal an auto-posted two-line entry (debit one account, credit
/// another for the same amount): [`Self::journal_auto_lines`].
fn journal_auto_entry(
&mut self,
date: NaiveDate,
description: &str,
debit_account: AccountId,
credit_account: AccountId,
amount: Decimal,
) -> Result<(EntryId, Vec<JournalLine>), StoreError> {
self.journal_auto_lines(
date,
description,
&[
(debit_account, Side::Debit, amount, None),
(credit_account, Side::Credit, amount, None),
],
)
}
/// Journal an auto-posted entry of `lines` (account, side, amount,
/// project) through the standard entry.created / entry.line_added /
/// entry.posted flow, a tagged line's `entry.line_class_set` right
@@ -3606,42 +3586,26 @@ impl Store {
cash_account: AccountId,
details: &ledger_core::PaymentDetails,
) -> Result<EntryId, StoreError> {
self.rehearse(|l| l.receive_payment_with(invoice_id, date, amount, cash_account, details))?;
self.approval_gate(
|l| l.receive_payment_with(invoice_id, date, amount, cash_account, details),
false,
)?;
// The rehearsal above is the whole check: hand-written mirrors of
// the engine's refusals drift from it (and were never reached).
self.ensure_payment_features(ledger_core::DocRef::Invoice(invoice_id), amount, details)?;
let ar = self.ensure_control_account(&ledger_core::RECEIVABLES)?;
let description = details.description(&format!("Payment on invoice {invoice_id}"));
let (entry_id, mut journaled) =
self.journal_auto_entry(date, &description, cash_account, ar, amount)?;
journaled.push(self.append_journal(
"invoice.payment_received",
json!({
"invoice_id": invoice_id,
"date": date.to_string(),
"amount": amount.to_string(),
"cash_account": cash_account,
"entry_id": entry_id,
}),
)?);
if details.instrument.is_some() {
journaled.push(self.append_journal(
"entry.instrument_set",
crate::form1099::entry_instrument_set(entry_id, details.instrument),
)?);
}
let live =
self.ledger
.receive_payment_with(invoice_id, date, amount, cash_account, details)?;
debug_assert_eq!(live, entry_id, "id allocator diverged from journal");
for line in &journaled {
apply_line_to_sqlite(&self.conn, line)?;
}
Ok(live)
let customer = self
.ledger
.get_invoice(invoice_id)
.ok_or(ledger_core::LedgerError::UnknownInvoice(invoice_id))?
.customer_id;
self.settle(ledger_core::SettleParams {
date,
description: details.description(&format!("Payment on invoice {invoice_id}")),
cash_account,
party: customer,
applications: vec![ledger_core::Application {
doc: ledger_core::DocRef::Invoice(invoice_id),
cash: amount,
discount: Decimal::ZERO,
discount_reason: None,
}],
fee: None,
instrument: details.instrument,
reference: details.reference.clone(),
})
}
/// Pay a vendor bill ([`Self::pay_bill_with`], with no payment method
@@ -3675,35 +3639,140 @@ impl Store {
cash_account: AccountId,
details: &ledger_core::PaymentDetails,
) -> Result<EntryId, StoreError> {
self.rehearse(|l| l.pay_bill_with(bill_id, date, amount, cash_account, details))?;
self.approval_gate(
|l| l.pay_bill_with(bill_id, date, amount, cash_account, details),
false,
)?;
self.ensure_payment_features(ledger_core::DocRef::Bill(bill_id), amount, details)?;
let ap = self.ensure_control_account(&ledger_core::PAYABLES)?;
let description = details.description(&format!("Payment on bill {bill_id}"));
let vendor = self
.ledger
.get_bill(bill_id)
.ok_or(ledger_core::LedgerError::UnknownBill(bill_id))?
.vendor_id;
self.settle(ledger_core::SettleParams {
date,
description: details.description(&format!("Payment on bill {bill_id}")),
cash_account,
party: vendor,
applications: vec![ledger_core::Application {
doc: ledger_core::DocRef::Bill(bill_id),
cash: amount,
discount: Decimal::ZERO,
discount_reason: None,
}],
fee: None,
instrument: details.instrument,
reference: details.reference.clone(),
})
}
/// Settle one or more invoices or bills in one entry (plan P4b S6;
/// rules.md B-42): the core posts it ([`ledger_core::Ledger::settle`]);
/// this journals its lines once and one `invoice.payment_received` or
/// `bill.paid` per application, each naming the control line it tags,
/// then the payment method. A single legacy-shaped payment is
/// journaled exactly as before; more than one application, a discount
/// or a fee needs `documents_v2`, and a payment accepted only because
/// an earlier one was reversed needs `document_standing`.
pub fn settle(&mut self, params: ledger_core::SettleParams) -> Result<EntryId, StoreError> {
self.rehearse(|l| l.settle(params.clone()))?;
self.approval_gate(|l| l.settle(params.clone()), false)?;
self.ensure_payment_features(&params)?;
let kind = match params.applications.first().map(|a| a.doc) {
Some(ledger_core::DocRef::Bill(_)) => ledger_core::DocumentKind::Bill,
_ => ledger_core::DocumentKind::Invoice,
};
let control_role = match kind {
ledger_core::DocumentKind::Invoice => ledger_core::RECEIVABLES,
ledger_core::DocumentKind::Bill => ledger_core::PAYABLES,
};
self.ensure_control_account(&control_role)?;
if params
.applications
.iter()
.any(|a| a.discount > Decimal::ZERO)
{
let role = match kind {
ledger_core::DocumentKind::Invoice => ledger_core::SALES_ALLOWANCES,
ledger_core::DocumentKind::Bill => ledger_core::PURCHASE_DISCOUNTS,
};
self.ensure_control_account(&role)?;
}
if params.fee.as_ref().is_some_and(|f| f.account.is_none()) {
self.ensure_control_account(&ledger_core::PAYMENT_PROCESSING_FEES)?;
}
let rows = self.ledger.settlement_lines(&params)?;
let simple: Vec<(AccountId, Side, Decimal, Option<ClassId>)> = rows
.iter()
.map(|&(account, side, amount, _)| (account, side, amount, None))
.collect();
let description = if params.description.trim().is_empty() {
format!(
"Settlement of {} document{}",
params.applications.len(),
if params.applications.len() == 1 {
""
} else {
"s"
}
)
} else {
params.description.clone()
};
let (entry_id, mut journaled) =
self.journal_auto_entry(date, &description, ap, cash_account, amount)?;
journaled.push(self.append_journal(
"bill.paid",
json!({
"bill_id": bill_id,
"date": date.to_string(),
"amount": amount.to_string(),
"cash_account": cash_account,
self.journal_auto_lines(params.date, &description, &simple)?;
let documents_v2 = params.applications.len() > 1
|| params
.applications
.iter()
.any(|a| a.discount > Decimal::ZERO)
|| params.fee.is_some();
let discounts = params
.applications
.iter()
.filter(|a| a.discount > Decimal::ZERO)
.count();
let fee_line = params.applications.len() + discounts;
let (event, id_key) = match kind {
ledger_core::DocumentKind::Invoice => ("invoice.payment_received", "invoice_id"),
ledger_core::DocumentKind::Bill => ("bill.paid", "bill_id"),
};
for (i, app) in params.applications.iter().enumerate() {
let doc_id = match app.doc {
ledger_core::DocRef::Invoice(id) | ledger_core::DocRef::Bill(id) => id,
};
let mut payload = json!({
"date": params.date.to_string(),
"amount": app.cash.to_string(),
"cash_account": params.cash_account,
"entry_id": entry_id,
}),
)?);
if details.instrument.is_some() {
});
payload[id_key] = json!(doc_id);
if documents_v2 {
payload["line"] = json!(i);
if app.discount > Decimal::ZERO {
let line = params.applications.len()
+ params.applications[..i]
.iter()
.filter(|a| a.discount > Decimal::ZERO)
.count();
payload["discount"] = json!(app.discount.to_string());
payload["discount_line"] = json!(line);
if let Some(reason) = &app.discount_reason {
payload["discount_reason"] = json!(reason);
}
}
if let Some(fee) = &params.fee
&& i == 0
{
payload["fee"] = json!(fee.amount.to_string());
payload["fee_line"] = json!(fee_line);
}
}
journaled.push(self.append_journal(event, payload)?);
}
if params.instrument.is_some() {
journaled.push(self.append_journal(
"entry.instrument_set",
crate::form1099::entry_instrument_set(entry_id, details.instrument),
crate::form1099::entry_instrument_set(entry_id, params.instrument),
)?);
}
let live = self
.ledger
.pay_bill_with(bill_id, date, amount, cash_account, details)?;
let live = self.ledger.settle(params)?;
debug_assert_eq!(live, entry_id, "id allocator diverged from journal");
for line in &journaled {
apply_line_to_sqlite(&self.conn, line)?;
@@ -3711,29 +3780,39 @@ impl Store {
Ok(live)
}
/// The journal features a payment of `amount` on `doc` needs
/// ([`Self::receive_payment_with`] SCENARIOS 2 and 3): document_standing
/// when more than an older version thinks is still owed (the
/// document's total less every payment event it recorded, reversed
/// or not, its line tagged or not: `Ledger::payments_recorded`),
/// payment_instruments when it names a payment method.
/// The journal features a settlement needs (rules.md B-27, B-42):
/// `documents_v2` for more than one application, a discount or a fee
/// (an older version would drop them, and the balance would be wrong),
/// `document_standing` when an application pays more than an older
/// version thinks is still owed (the document's total less every
/// payment event it recorded, reversed or not, its line tagged or
/// not), and `payment_instruments` when it names a payment method.
fn ensure_payment_features(
&self,
doc: ledger_core::DocRef,
amount: Decimal,
details: &ledger_core::PaymentDetails,
params: &ledger_core::SettleParams,
) -> Result<(), StoreError> {
let total = match doc {
ledger_core::DocRef::Invoice(id) => self.ledger.get_invoice(id).map(|i| i.total()),
ledger_core::DocRef::Bill(id) => self.ledger.get_bill(id).map(|b| b.total()),
};
if let Some(total) = total {
let older_owed = total?.checked_sub(self.ledger.payments_recorded(doc)?);
if older_owed.is_none_or(|owed| amount > owed) {
self.ensure_feature(crate::format::DOCUMENT_STANDING)?;
if params.applications.len() > 1
|| params
.applications
.iter()
.any(|a| a.discount > Decimal::ZERO)
|| params.fee.is_some()
{
self.ensure_feature(crate::format::DOCUMENTS_V2)?;
}
for app in &params.applications {
let total = match app.doc {
ledger_core::DocRef::Invoice(id) => self.ledger.get_invoice(id).map(|i| i.total()),
ledger_core::DocRef::Bill(id) => self.ledger.get_bill(id).map(|b| b.total()),
};
if let Some(total) = total {
let older_owed = total?.checked_sub(self.ledger.payments_recorded(app.doc)?);
if older_owed.is_none_or(|owed| app.cash > owed) {
self.ensure_feature(crate::format::DOCUMENT_STANDING)?;
}
}
}
if details.instrument.is_some() {
if params.instrument.is_some() {
self.ensure_feature(crate::format::PAYMENT_INSTRUMENTS)?;
}
Ok(())
@@ -6489,6 +6568,31 @@ fn get_str<'a>(p: &'a Value, key: &str) -> Result<&'a str, StoreError> {
.ok_or_else(|| StoreError::JournalCorrupt(format!("missing/invalid '{key}'")))
}
/// An optional integer a newer payment event carries (its `line` or
/// `discount_line`): absent or null is none; anything else must be an
/// integer.
fn get_opt_usize(p: &Value, key: &str) -> Result<Option<usize>, StoreError> {
match p.get(key) {
None | Some(Value::Null) => Ok(None),
Some(v) => v
.as_u64()
.map(|n| Some(n as usize))
.ok_or_else(|| StoreError::JournalCorrupt(format!("invalid '{key}'"))),
}
}
/// An optional decimal string a newer payment event carries (its
/// `discount`): absent or null is zero.
fn get_opt_decimal(p: &Value, key: &str) -> Result<Decimal, StoreError> {
match p.get(key) {
None | Some(Value::Null) => Ok(Decimal::ZERO),
Some(v) => v
.as_str()
.and_then(|s| s.parse().ok())
.ok_or_else(|| StoreError::JournalCorrupt(format!("invalid '{key}'"))),
}
}
/// Replay one journal line into a ledger, asserting recorded ids. Used by
/// hydration, `verify`, and `rebuild`: the journal is the script, the engine
/// is the actor.
@@ -7073,23 +7177,30 @@ fn replay_line(
ledger.replay_invoice_sent(invoice_id, sent)?;
}
"invoice.payment_received" => {
// The payment entry was already rebuilt; this only moves the
// invoice's paid amount and status.
ledger.replay_invoice_payment(
// The payment entry was already rebuilt; this only tags its
// receivables lines (the line the event names, or the first
// untagged one for a legacy event) and moves the invoice.
ledger.replay_invoice_payment_at(
get_u64(p, "invoice_id")?,
get_str(p, "amount")?
.parse()
.map_err(|_| StoreError::JournalCorrupt("bad amount".into()))?,
get_u64(p, "entry_id")?,
get_opt_usize(p, "line")?,
get_opt_decimal(p, "discount")?,
get_opt_usize(p, "discount_line")?,
)?;
}
"bill.paid" => {
ledger.replay_bill_payment(
ledger.replay_bill_payment_at(
get_u64(p, "bill_id")?,
get_str(p, "amount")?
.parse()
.map_err(|_| StoreError::JournalCorrupt("bad amount".into()))?,
get_u64(p, "entry_id")?,
get_opt_usize(p, "line")?,
get_opt_decimal(p, "discount")?,
get_opt_usize(p, "discount_line")?,
)?;
}
"fx.rate_set" => {
@@ -5,3 +5,4 @@
# It is recommended to check this file in to source control so that
# everyone who runs the test benefits from these saved cases.
cc 704ab49c9bea84359475c3afa56c3354275a353670fc71156fba151f846f4f73 # shrinks to first = [Create(false, 0, 1), Create(false, 0, 1)], then = [Close(1), Hand(false, 1)]
cc f678814ec34db3abef40116e17e562fe5abe652c09f12600e19841beaf9d6fe6 # shrinks to first = [Create(false, 0, 13902), Settle { a: 0, b: 0, n: 0, cash: 6676, discount: 551, fee: 0 }], then = []
+80
View File
@@ -71,6 +71,16 @@ enum Op {
Close(u8),
/// A hand line on receivables (true) or payables: always refused.
Hand(bool, i64),
/// One payment settling two documents of one party, the first with a
/// discount and (on invoices) a processor's fee.
Settle {
a: usize,
b: usize,
n: u8,
cash: i64,
discount: i64,
fee: i64,
},
}
fn arb_op() -> impl Strategy<Value = Op> {
@@ -83,6 +93,15 @@ fn arb_op() -> impl Strategy<Value = Op> {
2 => (0usize..8, 0u8..90).prop_map(|(k, n)| Op::MarkSent(k, n)),
1 => (1u8..4).prop_map(Op::Close),
1 => (any::<bool>(), 1i64..10_000).prop_map(|(r, c)| Op::Hand(r, c)),
2 => (0usize..8, 0usize..8, 0u8..90, 1i64..20_000, 0i64..2_000, 0i64..500)
.prop_map(|(a, b, n, cash, discount, fee)| Op::Settle {
a,
b,
n,
cash,
discount,
fee,
}),
]
}
@@ -220,6 +239,67 @@ fn run(s: &mut Store, k: &Setup, ops: &[Op], docs: &mut Vec<DocRef>) -> Result<(
})
.map(drop)
}
Op::Settle { .. } if docs.is_empty() => Ok(()),
Op::Settle {
a,
b,
n,
cash,
discount,
fee,
} => {
let first = docs[a % docs.len()];
let mut second = docs[b % docs.len()];
if second == first && docs.len() > 1 {
second = docs[(b + 1) % docs.len()];
}
let same_kind = matches!(
(first, second),
(DocRef::Invoice(_), DocRef::Invoice(_)) | (DocRef::Bill(_), DocRef::Bill(_))
);
if !same_kind {
// One party and one kind per settlement: not this pair.
Ok(())
} else {
let party = match first {
DocRef::Invoice(id) => s.ledger().get_invoice(id).map(|i| i.customer_id),
DocRef::Bill(id) => s.ledger().get_bill(id).map(|v| v.vendor_id),
}
.unwrap();
let invoices = matches!(first, DocRef::Invoice(_));
let money = cents(cash);
let apps = vec![
ledger_core::Application {
doc: first,
cash: money,
discount: cents(discount),
discount_reason: (discount > 0)
.then(|| format!("a late discount, n {n}")),
},
ledger_core::Application {
doc: second,
cash: money,
discount: Decimal::ZERO,
discount_reason: None,
},
];
s.settle(ledger_core::SettleParams {
date: day(n),
description: "two documents, one payment".into(),
cash_account: k.bank,
party,
applications: apps,
fee: (invoices && fee > 0).then_some(ledger_core::Fee {
amount: cents(fee),
account: None,
vendor: None,
}),
instrument: None,
reference: None,
})
.map(drop)
}
}
Op::Hand(receivables, c) => {
let code = if receivables { "1200" } else { "2000" };
match s.ledger().chart().find_by_code(code).map(|a| a.id) {
+214
View File
@@ -1241,3 +1241,217 @@ fn mark_sent_on_void_refused() {
assert_eq!(s.ledger().get_invoice(inv).unwrap().sends.len(), 1);
s.verify().unwrap();
}
/// A settlement of two invoices, a discount and a processor's fee: one
/// entry whose events name the lines they tag, every figure derived, and
/// the books replaying to the same lines (plan P4b S6; rules.md B-42
/// INVARIANTS 1 and 3).
#[test]
fn a_settlement_names_its_lines_and_replays() {
use ledger_core::{Application, DocRef, Fee, SettleParams};
let dir = test_dir("settlement-lines");
let mut s = Store::create(&dir.0, Currency::USD).unwrap();
let bank = s
.add_account("1000", "Bank", AccountType::Asset, None, false)
.unwrap();
let c = s.add_customer("Fernhill Labs").unwrap();
let first = s
.create_invoice(c, d(2026, 4, 1), d(2026, 5, 1), vec![line("Design", 7_000)])
.unwrap();
let second = s
.create_invoice(
c,
d(2026, 4, 2),
d(2026, 5, 2),
vec![line("Support", 2_000)],
)
.unwrap();
let from = journal_len(&dir.0);
let entry = s
.settle(SettleParams {
date: d(2026, 4, 10),
description: "One deposit, two invoices".into(),
cash_account: bank,
party: c,
applications: vec![
Application {
doc: DocRef::Invoice(first),
cash: cents(6_000),
discount: cents(1_000),
discount_reason: Some("vendor honoured the early discount late".into()),
},
Application {
doc: DocRef::Invoice(second),
cash: cents(2_000),
discount: Decimal::ZERO,
discount_reason: None,
},
],
fee: Some(Fee {
amount: cents(500),
account: None,
vendor: None,
}),
instrument: None,
reference: Some("ch_42".into()),
})
.unwrap();
let got = since(&dir.0, from);
// The two role accounts created on demand, then the entry, then one
// event per application.
assert_eq!(
got.iter().filter(|(t, _)| t == "account.added").count(),
2,
"{got:?}"
);
assert_eq!(
got.iter()
.filter(|(t, _)| t == "invoice.payment_received")
.count(),
2
);
assert_eq!(
got.iter().filter(|(t, _)| t == "entry.line_added").count(),
6
);
// One credit per invoice's cash, one for the discount, the fee, the
// discount expense and the net deposit: the rows the event lines name.
let events: Vec<&Value> = got
.iter()
.filter(|(t, _)| t == "invoice.payment_received")
.map(|(_, p)| p)
.collect();
assert_eq!(events.len(), 2);
assert_eq!(events[0]["line"], json!(0));
assert_eq!(events[0]["discount"], json!("10.00"));
assert_eq!(events[0]["discount_line"], json!(2));
assert_eq!(events[0]["fee"], json!("5.00"));
assert_eq!(events[0]["fee_line"], json!(3));
assert_eq!(events[1]["line"], json!(1));
assert!(events[1].get("discount").is_none());
assert!(events[1].get("fee").is_none());
let live = s.ledger().clone();
let ar = live.control_check(d(2026, 4, 10)).unwrap();
let receivables = ar.iter().find(|c| c.role == "receivables").unwrap();
assert_eq!(receivables.balance, cents(0));
assert_eq!(receivables.documents_total, cents(0));
assert_eq!(receivables.difference, Decimal::ZERO);
for (id, paid, discounted) in [(first, 6_000, 1_000), (second, 2_000, 0)] {
let st = live.invoice_state(id, d(2026, 4, 10)).unwrap().unwrap();
assert_eq!(
(st.paid, st.discounted, st.outstanding),
(cents(paid), cents(discounted), Decimal::ZERO)
);
}
assert_eq!(s.ledger().get_entry(entry).unwrap().lines().len(), 6);
drop(s);
let s = Store::open(&dir.0).unwrap();
assert!(
live.differs_from(s.ledger()).is_empty(),
"{:?}",
live.differs_from(s.ledger())
);
s.verify().unwrap();
}
/// A settlement of more than one document, a discount or a fee needs
/// `documents_v2`: refused, journaling nothing, in books without it, and
/// accepted after the owner's upgrade, replaying to the same books (plan
/// P4b S6; rules.md B-27, B-42).
#[test]
fn settlement_waits_for_documents_v2() {
use ledger_core::{Application, DocRef, SettleParams};
let dir = fixture("settlement-v2");
let mut s = Store::open(&dir.0).unwrap();
assert!(
!s.journal_format()
.has_feature(ledger_store::format::DOCUMENTS_V2)
);
let bank = s.ledger().chart().find_by_code("1000").unwrap().id;
let head = s.head();
let params = |discount: Decimal| SettleParams {
date: d(2026, 2, 15),
description: "Two bills, one payment".into(),
cash_account: bank,
party: 1,
applications: vec![
Application {
doc: DocRef::Bill(1),
cash: cents(7_000),
discount,
discount_reason: (!discount.is_zero()).then_some("late discount".into()),
},
Application {
doc: DocRef::Bill(2),
cash: cents(4_000),
discount: Decimal::ZERO,
discount_reason: None,
},
],
fee: None,
instrument: None,
reference: None,
};
match s.settle(params(Decimal::ZERO)) {
Err(StoreError::FormatUpgradePending { need }) => {
assert_eq!(need, "the journal feature documents_v2")
}
other => panic!("expected FormatUpgradePending, got {other:?}"),
}
assert_eq!(s.head(), head, "nothing journaled");
s.upgrade_format().unwrap();
// The discount is outside the invoice's terms (it has none), so it
// needs its reason; the payment is also accepted only because the
// earlier one was reversed, which needs document_standing too.
s.settle(params(cents(1_000))).unwrap();
s.verify().unwrap();
let live = s.ledger().clone();
drop(s);
let s = Store::open(&dir.0).unwrap();
assert!(
live.differs_from(s.ledger()).is_empty(),
"{:?}",
live.differs_from(s.ledger())
);
let st = s.ledger().bill_state(1, d(2026, 12, 31)).unwrap().unwrap();
assert_eq!(st.status, ledger_core::DocStatus::Paid);
}
/// Legacy payment events carry no `line`, so replay keeps the positional
/// rule: the first untagged control line for the payment's amount, in the
/// order the events come (plan P4b S6; rules.md B-42 INVARIANT 3).
#[test]
fn legacy_payment_events_keep_the_positional_rule() {
use ledger_core::{DocRef, Movement};
let dir = fixture("legacy-positional");
let s = Store::open(&dir.0).unwrap();
let payments: Vec<Value> = std::fs::read_to_string(dir.0.join(JOURNAL_FILE))
.unwrap()
.lines()
.map(|l| serde_json::from_str::<Value>(l).unwrap())
.filter(|v| v["type"] == json!("invoice.payment_received"))
.map(|v| v["payload"].clone())
.collect();
assert!(!payments.is_empty());
for p in &payments {
assert!(p.get("line").is_none(), "{p}");
}
let lines = s.ledger().doc_lines(DocRef::Invoice(3));
assert_eq!(
lines
.iter()
.map(|l| (l.movement, l.amount))
.collect::<Vec<_>>(),
[
(Movement::Origin, cents(30_000)),
(Movement::Payment, cents(-12_000))
]
);
assert_eq!(
s.ledger()
.line_doc(lines[1].entry, lines[1].line)
.unwrap()
.doc,
DocRef::Invoice(3)
);
}
+69 -1
View File
@@ -1875,6 +1875,8 @@ fn books_written_under_older_rules_still_open() {
(4, "4000", "Revenue", "Revenue"),
(5, "2000", "Accounts Payable", "Liability"),
(6, "6500", "Supplies", "Expense"),
(7, "4100", "Refunds and Allowances", "Revenue"),
(8, "1020", "Bank", "Asset"),
] {
w.append(
"account.added",
@@ -1966,13 +1968,55 @@ fn books_written_under_older_rules_still_open() {
"to": ["billing@fernhill.example"], "kind": "original", "reference": "msg-1"}),
)
.unwrap();
// P4b S6's new shape, hand-written as this version writes it: a
// payment event naming its line and the discount line it also tags.
// This reader tags both; the version before it would drop the discount
// and read the invoice paid above its total.
w.append(
"entry.created",
json!({"id": 4, "date": "2026-04-05", "description": "Payment on invoice 1"}),
)
.unwrap();
for (account, side, amount) in [
(3, "credit", "98.99"),
(3, "credit", "1.00"),
(7, "debit", "1.00"),
(8, "debit", "98.99"),
] {
w.append(
"entry.line_added",
json!({"id": 4, "account": account, "side": side, "amount": amount,
"currency": "USD"}),
)
.unwrap();
}
w.append(
"entry.posted",
json!({"id": 4, "date": "2026-04-05", "description": "Payment on invoice 1",
"reversal_of": null,
"lines": [
{"account": 3, "side": "credit", "amount": "98.99", "currency": "USD"},
{"account": 3, "side": "credit", "amount": "1.00", "currency": "USD"},
{"account": 7, "side": "debit", "amount": "1.00", "currency": "USD"},
{"account": 8, "side": "debit", "amount": "98.99", "currency": "USD"}
]}),
)
.unwrap();
w.append(
"invoice.payment_received",
json!({"invoice_id": 1, "date": "2026-04-05", "amount": "98.99",
"cash_account": 8, "entry_id": 4, "line": 0,
"discount": "1.00", "discount_line": 1,
"discount_reason": "the customer paid the rest late"}),
)
.unwrap();
drop(w);
// Opening rebuilds from the journal; it must accept all of it.
let _ = std::fs::remove_file(dir.join(ledger_store::db_file()));
let store = Store::open(&dir).expect("older books still open");
store.verify().unwrap();
assert_eq!(store.journal_format().format, 1);
assert_eq!(store.ledger().chart().len(), 6);
assert_eq!(store.ledger().chart().len(), 8);
assert_eq!(store.ledger().list_periods().len(), 2);
let lines = store.ledger().get_entry(1).unwrap().lines();
assert_eq!(lines.len(), 2);
@@ -2040,6 +2084,30 @@ fn books_written_under_older_rules_still_open() {
assert_eq!(sends[0].to, ["billing@fernhill.example"]);
assert_eq!(sends[0].kind, ledger_core::arap::SendKind::Original);
assert_eq!(sends[0].reference.as_deref(), Some("msg-1"));
// The S6 shape: the invoice reads paid and discounted, and replay
// tagged the lines the event names.
let st = store
.ledger()
.invoice_state(1, NaiveDate::from_ymd_opt(2026, 12, 31).unwrap())
.unwrap()
.unwrap();
assert_eq!(
(st.status, st.paid, st.discounted, st.outstanding),
(
ledger_core::DocStatus::Paid,
"98.99".parse::<Decimal>().unwrap(),
"1.00".parse::<Decimal>().unwrap(),
Decimal::ZERO
)
);
assert_eq!(
store.ledger().line_doc(4, 0).unwrap().movement,
ledger_core::Movement::Payment
);
assert_eq!(
store.ledger().line_doc(4, 1).unwrap().movement,
ledger_core::Movement::Discount
);
}
/// The books an earlier wanderbooks wrote, one directory each under