name: CI

on:
  push:
    branches: ["main"]
  pull_request:
    branches: ["main"]

env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1

jobs:
  lint:
    name: Lint (${{ matrix.features }})
    strategy:
      matrix:
        features: ["--no-default-features", "--all-features", ""]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt, clippy

      - name: Check formatting (once)
        if: matrix.features == ''
        run: cargo fmt -- --check

      - name: Clippy
        run: cargo clippy --all-targets ${{ matrix.features }} -- -D warnings

  msrv:
    name: MSRV Verification (${{ matrix.features }})
    strategy:
      matrix:
        features: ["--no-default-features", "--all-features", ""]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Extract MSRV from Cargo.toml
        id: msrv
        run: |
          MSRV=$(yq '.package.rust-version' Cargo.toml --unwrapScalar)

          if [ -z "$MSRV" ]; then
            echo "No MSRV specified in Cargo.toml, using stable"
            MSRV="stable"
          else
            echo "msrv=$MSRV" >> $GITHUB_OUTPUT
            echo "Using MSRV: $MSRV"
          fi

      - name: Install Rust stable
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ steps.msrv.outputs.msrv }}

      - name: Install cargo-msrv
        uses: taiki-e/install-action@v2
        with:
          tool: cargo-msrv

      - name: Verify MSRV
        run: cargo msrv verify ${{ matrix.features }}

  test:
    name: Test (${{ matrix.os }}, ${{ matrix.rust }}, ${{ matrix.features }})
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        rust: [stable, nightly]
        features: ["--no-default-features", "--all-features", ""]
      fail-fast: false
    runs-on: ${{ matrix.os }}
    continue-on-error: ${{ matrix.rust == 'nightly' }}

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust }}

      - uses: Swatinem/rust-cache@v2
        with:
          key: ${{ matrix.os }}-${{ matrix.rust }}-${{ hashFiles('matrix.features') }}

      - name: Run tests
        run: cargo test --all-targets ${{ matrix.features }}

  check:
    name: Cargo Check (${{ matrix.features }})
    strategy:
      matrix:
        features: ["--no-default-features", "--all-features", ""]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable

      - uses: Swatinem/rust-cache@v2

      - name: Cargo check
        run: cargo check ${{ matrix.features }}

  examples:
    name: Examples
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable

      - uses: Swatinem/rust-cache@v2

      - name: Build examples
        run: cargo build --examples

      - name: Run all examples
        run: ./scripts/run_examples.sh

  coverage:
    name: Code Coverage
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Install cargo-tarpaulin
        uses: taiki-e/install-action@cargo-tarpaulin

      - name: Generate code coverage
        run: |
          cargo tarpaulin --out Xml --out Lcov --output-dir coverage --fail-under 80

  security:
    name: Security Audit
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Install cargo-audit
        uses: taiki-e/install-action@cargo-audit

      - name: Run cargo audit
        run: cargo audit

  doc:
    name: Documentation (${{ matrix.features }})
    strategy:
      matrix:
        features: ["--no-default-features", "--all-features", ""]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Build documentation
        run: cargo doc --no-deps ${{ matrix.features }}