name: CI checks

on: [push, pull_request]

jobs:
  test:
    name: Test on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        # We don't need to test across multiple platforms yet
        # os: [ubuntu-latest, windows-latest, macOS-latest]
        os: [ubuntu-latest]

    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true
      - name: Run tests
        uses: actions-rs/cargo@v1
        with:
          command: test
          args: --verbose --release --all --all-features

  build:
    name: Build target ${{ matrix.target }}
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target:
          - wasm32-unknown-unknown
          - wasm32-wasi

    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true
      - name: Add target
        run: rustup target add ${{ matrix.target }}
      - name: cargo build
        uses: actions-rs/cargo@v1
        with:
          command: build
          args: --all-features

  bitrot:
    name: Bitrot check
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true
      # Build benchmarks to prevent bitrot
      - name: Build benchmarks
        uses: actions-rs/cargo@v1
        with:
          command: build
          args: --all --benches --all-features

  book:
    name: Book tests
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Setup mdBook
        uses: peaceiris/actions-mdbook@v1
        with:
          mdbook-version: '0.4.4'
      - name: Test halo2 book
        run: mdbook test book/

  clippy:
    name: Clippy (stable)
    timeout-minutes: 30
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          components: clippy
          override: true
      - name: Run clippy
        uses: actions-rs/clippy-check@v1
        with:
          name: Clippy (stable)
          token: ${{ secrets.GITHUB_TOKEN }}
          args: --all-features --all-targets -- -D warnings

  clippy-nightly:
    name: Clippy (nightly)
    timeout-minutes: 30
    runs-on: ubuntu-latest
    continue-on-error: true

    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: nightly
          components: clippy
          override: true
      - name: Run Clippy (nightly)
        uses: actions-rs/clippy-check@v1
        continue-on-error: true
        with:
          name: Clippy (nightly)
          token: ${{ secrets.GITHUB_TOKEN }}
          args: --all-features --all-targets -- -W clippy::all

  codecov:
    name: Code coverage
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      # Use stable for this to ensure that cargo-tarpaulin can be built.
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true
      - name: Install cargo-tarpaulin
        uses: actions-rs/cargo@v1
        with:
          command: install
          args: cargo-tarpaulin
      - name: Generate coverage report
        uses: actions-rs/cargo@v1
        with:
          command: tarpaulin
          args: --all-features --timeout 600 --out Xml
      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v1
        with:
          token: ${{secrets.CODECOV_TOKEN}}

  doc-links:
    name: Intra-doc links
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: nightly
          override: true
      - name: cargo fetch
        uses: actions-rs/cargo@v1
        with:
          command: fetch

      # Ensure intra-documentation links all resolve correctly
      # Requires #![deny(intra_doc_link_resolution_failure)] in crates.
      - name: Check intra-doc links
        uses: actions-rs/cargo@v1
        with:
          command: doc
          args: --all --document-private-items

  fmt:
    name: Rustfmt
    timeout-minutes: 30
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true
      - run: rustup component add rustfmt
      - uses: actions-rs/cargo@v1
        with:
          command: fmt
          args: --all -- --check