name: Release

on:
  release:
    types: [published]

env:
  CARGO_TERM_COLOR: always

jobs:
  publish:
    name: Publish to crates.io
    runs-on: ubuntu-latest
    permissions:
      id-token: write
    steps:
    - uses: actions/checkout@v4

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

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

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

    - name: Verify version matches tag
      run: |
        CARGO_VERSION=$(cargo metadata --no-deps --format-version 1 | jq -r '.packages[0].version')
        TAG_VERSION=${GITHUB_REF#refs/tags/v}
        if [ "$CARGO_VERSION" != "$TAG_VERSION" ]; then
          echo "Version mismatch: Cargo.toml has $CARGO_VERSION, but tag is $TAG_VERSION"
          exit 1
        fi

    - name: Run tests
      run: cargo test --verbose

    - uses: rust-lang/crates-io-auth-action@v1
      id: auth
    - run: cargo publish
      env:
        CARGO_REGISTRY_TOKEN: ${{ steps.auth.outputs.token }}