name: CI

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

env:
  CARGO_TERM_COLOR: always
  # Skip live SSH ls-refs calls in integration tests. Tests that require real
  # network access are already marked #[ignore] in remote.rs.
  ENTANGLE_SKIP_REMOTE_CHECK: "1"

jobs:
  # ---------------------------------------------------------------------------
  # test — cargo test on all three platforms
  # ---------------------------------------------------------------------------
  test:
    name: test (${{ matrix.os }})
    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false   # let all three platforms finish even if one fails
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]

    steps:
      - uses: actions/checkout@v4

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

      # Cache the Cargo registry and compiled dependencies across runs.
      # Keyed on the OS + Cargo.lock so a lock-file bump busts the cache.
      - name: Cache Cargo registry
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: ${{ runner.os }}-cargo-

      - name: Configure git identity (required by integration tests)
        # Several integration tests call `git commit`, which requires a name
        # and email. GitHub Actions runners don't have a global git config by
        # default, so we set one here.
        run: |
          git config --global user.email "ci@example.com"
          git config --global user.name "CI"

      - name: cargo test
        working-directory: entangle
        run: cargo test --locked

  # ---------------------------------------------------------------------------
  # lint — clippy + rustfmt (Ubuntu only; output is platform-independent)
  # ---------------------------------------------------------------------------
  lint:
    name: lint
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust (stable + clippy + rustfmt)
        uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy, rustfmt

      - name: Cache Cargo registry
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: ${{ runner.os }}-cargo-

      - name: cargo clippy
        working-directory: entangle
        # -D warnings turns clippy warnings into errors so they can't be
        # accidentally merged. The -- separates cargo args from clippy args.
        run: cargo clippy --locked --all-targets -- -D warnings

      - name: cargo fmt
        working-directory: entangle
        run: cargo fmt --check

  # ---------------------------------------------------------------------------
  # deny — cargo-deny checks (licenses, advisories, bans, sources)
  # ---------------------------------------------------------------------------
  deny:
    name: cargo-deny
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: cargo-deny
        uses: EmbarkStudios/cargo-deny-action@v2
        with:
          command: check
          manifest-path: entangle/Cargo.toml