name: CI
on: [push, pull_request]

env:
  RUSTDOCFLAGS: -D warnings
  RUSTFLAGS: -D warnings

jobs:
  clippy:
    name: clippy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Install Rust
        run: |
          rustup update beta --no-self-update
          rustup default beta
          rustup component add clippy
      - uses: Swatinem/rust-cache@v2
      - run: cargo clippy --all-features --all-targets -- -D warnings

  test:
    name: Test
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        rust: ["1.70", stable, beta, nightly]
    steps:
    - uses: actions/checkout@v4
    - name: Install Rust
      run: |
        rustup update ${{ matrix.rust }} --no-self-update
        rustup default ${{ matrix.rust }}
    - uses: Swatinem/rust-cache@v2
    - run: cargo test
    - name: Integration test
      run: cargo test --manifest-path test-crate/Cargo.toml

  cross_compile_test:
    name: Test Cross Compile - ${{ matrix.platform.target }}
    needs: [ test ]
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          # Testable
          - target: aarch64-unknown-linux-gnu
            test: true
          - target: arm-unknown-linux-gnueabihf
            test: true
          - target: powerpc-unknown-linux-gnu
            test: true
          - target: s390x-unknown-linux-gnu
            test: true
          - target: x86_64-unknown-linux-musl
            test: true
          - target: aarch64-unknown-linux-musl
            test: true
          # Build only
          - target: x86_64-pc-solaris
            test: false
          - target: x86_64-pc-windows-gnu
            test: false
          # FIXME: build fails, see <https://github.com/rust-lang/cmake-rs/issues/211>
          # - target: x86_64-unknown-freebsd
          #   test: false
          - target: x86_64-unknown-netbsd
            test: false
          - target: x86_64-unknown-illumos
            test: false
    steps:
    - uses: actions/checkout@master
    - name: Install Rust
      run: |
        rustup update stable --no-self-update
        rustup default stable
        rustup target add ${{ matrix.platform.target }}
    - uses: taiki-e/install-action@v2
      with:
        tool: cross
    - uses: Swatinem/rust-cache@v2
    - name: cross test
      run: cross test -vv --target ${{ matrix.platform.target }}
      working-directory: test-crate
      if: ${{ matrix.platform.test }}
    - name: cross build
      run: cross build -vv --target ${{ matrix.platform.target }}
      working-directory: test-crate
      if: ${{ !matrix.platform.test }}

  ios_cross_compile_test:
    name: Test Cross Compile - ${{ matrix.platform.target }}
    needs: [ test ]
    runs-on: macos-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          - target: aarch64-apple-ios
    steps:
    - uses: actions/checkout@v4
    - name: Install Rust
      run: |
        rustup update stable --no-self-update
        rustup default stable
        rustup target add ${{ matrix.platform.target }}
    - uses: Swatinem/rust-cache@v2
    - name: build
      run: cargo build -vv --target ${{ matrix.platform.target }}
      working-directory: test-crate
      env:
        # If this isn't specified the default is iOS 7, for which zlib-ng will not compile due to the lack of thread-local storage.
        IPHONEOS_DEPLOYMENT_TARGET: 16

  rustfmt:
    name: Rustfmt
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@master
    - name: Install Rust
      run: |
        rustup update stable --no-self-update
        rustup default stable
        rustup component add rustfmt
    - run: cargo fmt --all -- --check

  doc:
    name: docs
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: |
          rustup update nightly --no-self-update
          rustup default nightly
      - uses: Swatinem/rust-cache@v2
      - run: cargo doc

  msrv:
    name: MSRV check
    runs-on: ubuntu-24.04
    timeout-minutes: 10
    env:
      RUSTFLAGS: # No need to check warnings on old MSRV, unset `-Dwarnings`
    steps:
    - uses: actions/checkout@master
    - name: Install Rust
      run: |
        msrv="$(
          cargo metadata --format-version=1 |
          jq -r '.packages[] | select(.name == "cmake") | .rust_version'
        )"
        echo "MSRV: $msrv"
        rustup update "$msrv" --no-self-update && rustup default "$msrv"
    - uses: Swatinem/rust-cache@v2
    - run: cargo check

  success:
    needs:
      - clippy
      - test
      - cross_compile_test
      - ios_cross_compile_test
      - rustfmt
      - doc
      - msrv
    runs-on: ubuntu-latest
    # GitHub branch protection is exceedingly silly and treats "jobs skipped because a dependency
    # failed" as success. So we have to do some contortions to ensure the job fails if any of its
    # dependencies fails.
    if: always() # make sure this is never "skipped"
    steps:
      # Manually check the status of all dependencies. `if: failure()` does not work.
      - name: check if any dependency failed
        run: jq --exit-status 'all(.result == "success")' <<< '${{ toJson(needs) }}'