Files
wanderbooks/crates/ledger-store/src/error.rs
T
swaitsandClaude Opus 5.5 4ff5d1a40b feat: receipt unlink and attachment withdrawal
Posted entries stay immutable (R-3), but their evidence can now change the
same way the ledger does: by appending events, never by editing or
deleting. New R-13a.

- books.unlink_receipt {attachment_id, reason} journals receipt.unlinked
  and leaves the receipt filed, unlinked. The receipt policy holds: an
  entry that requires a receipt can't lose its last one (structured
  receipt_required error), so a replacement is attach-new, then
  unlink-old. Drafts and reversals are exempt, as at posting.
- books.withdraw_attachment {attachment_id, reason} journals
  attachment.withdrawn for an unlinked receipt or a filed document: hidden
  from list_receipts (unless include_withdrawn), never linkable again. The
  blob stays in the store, hash-verified and readable.
- link_receipt now refuses an already-linked or withdrawn attachment.
  Before, re-linking silently moved a receipt off a posted entry,
  bypassing the policy; evidence now leaves an entry only through a
  recorded unlink. dispose_asset checks its receipt ids before posting
  instead of after.
- Schema v5 adds attachments.withdrawn_at/withdrawn_reason; existing
  stores migrate on open and replay rebuilds the projection.

Tests: store test (errors, reopen, rebuild, verify, journal history) and
an MCP stdio test (policy refusal, replace flow, withdraw, listings,
under-threshold unlink). Dry-run and live use on the the first company books:
8 migrated .eml attachments swapped for their PDF renders, trial balance
unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MtYEaR6M6Ybdhm6X98BWNu
2026-10-11 18:40:51 -07:00

76 lines
2.3 KiB
Rust

//! Error type for the store.
use thiserror::Error;
/// Every way a store operation can fail.
#[derive(Debug, Error)]
pub enum StoreError {
/// Filesystem error.
#[error("io error: {0}")]
Io(#[from] std::io::Error),
/// SQLite error.
#[error("sqlite error: {0}")]
Rusqlite(#[from] rusqlite::Error),
/// JSON error.
#[error("json error: {0}")]
Json(#[from] serde_json::Error),
/// The engine rejected the operation. The journal is untouched.
#[error("ledger error: {0}")]
Ledger(#[from] ledger_core::LedgerError),
/// The journal failed integrity verification.
#[error("journal corrupt: {0}")]
JournalCorrupt(String),
/// Replay produced different ids than the journal recorded.
#[error("replay mismatch: {0}")]
ReplayMismatch(String),
/// [`crate::Store::verify`] found divergence.
#[error("verify failed: {0}")]
VerifyMismatch(String),
/// A blob's bytes did not match its SHA-256.
#[error("blob corrupt: hash mismatch for {0}")]
CorruptBlob(String),
/// Referenced attachment does not exist.
#[error("unknown attachment {0}")]
UnknownAttachment(u64),
/// The attachment is not linked to any entry.
#[error("attachment {0} is not linked to an entry")]
AttachmentNotLinked(u64),
/// The attachment is linked to an entry; unlink it first.
#[error("attachment {0} is linked to entry {1}; unlink it first with books.unlink_receipt")]
AttachmentLinked(u64, u64),
/// The attachment was withdrawn and can no longer be linked or changed.
#[error("attachment {0} is withdrawn")]
AttachmentWithdrawn(u64),
/// A correction to the evidence trail needs a reason.
#[error("a non-empty reason is required")]
ReasonRequired,
/// The store's schema is newer than this binary understands.
#[error("schema version {0} newer than supported {1}")]
SchemaTooNew(u32, u32),
/// `create` called where a store already exists.
#[error("store already exists at {0}")]
AlreadyExists(String),
/// `open` called where no store exists.
#[error("store not found at {0}")]
NotFound(String),
/// The requested base currency differs from the store's.
#[error("base currency mismatch: store is {0}, requested {1}")]
CurrencyMismatch(String, String),
}