name: Coverage

on: ["push", "pull_request"]

env:
  CARGO_TERM_COLOR: always
  RUST_TOOLCHAIN: 1.86.0

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

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

      - name: Rust Cache
        uses: Swatinem/rust-cache@v2

      - name: Cache vcpkg
        uses: actions/cache@v4
        with:
          path: target/vcpkg
          key: A-vcpkg-${{ runner.os }}-${{ hashFiles('Cargo.toml', 'Cargo.lock') }}
          restore-keys: |
            A-vcpkg-${{ runner.os }}-

      - name: Vcpkg Linux Dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libltdl-dev

      - name: Vcpkg
        run: |
          cargo install cargo-vcpkg
          cargo vcpkg -v build

      - name: Install cargo-tarpaulin
        run: cargo install cargo-tarpaulin

      # Note: We manually link zlib. This should be synchronized with the flags set for Linux in .cargo/config.toml.
      - name: Generate coverage report
        run: |
          cargo tarpaulin \
            --out Lcov \
            --output-dir coverage \
            --rustflags="-C link-arg=-lz"

      - name: Upload coverage to Coveralls
        uses: coverallsapp/github-action@v2
        with:
          files: ./coverage/lcov.info
          format: lcov
          allow-empty: false