name: CI
on:
  pull_request:
  push:
    branches:
      - master
env:
  RUST_BACKTRACE: 1

jobs:
  style:
    name: Check Style
    runs-on: ubuntu-latest
    steps:

    - name: Checkout
      uses: actions/checkout@v3
    - name: Install Rust
      uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: stable
        override: true
        components: rustfmt

    - name: cargo fmt --check
      uses: actions-rs/cargo@v1
      with:
        command: fmt
        args: --all -- --check

  check:
    name: Check
    runs-on: ubuntu-latest
    env:
      RUSTFLAGS: -Dwarnings
    strategy:
      matrix:
        rust:
          - stable
          - nightly
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Rust (${{ matrix.rust }})
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: ${{ matrix.rust }}
          override: true

      - uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

      - name: Check examples
        uses: actions-rs/cargo@v1
        with:
            command: check
            args: --examples --all

      - name: Check examples with all features on stable
        uses: actions-rs/cargo@v1
        with:
            command: check
            args: --examples --all-features --all
        if: matrix.rust == 'stable'

      - name: Check benchmarks on nightly
        uses: actions-rs/cargo@v1
        with:
            command: check
            args: --all-features --examples --workspace --benches
        if: matrix.rust == 'nightly'


  directories: # Job that list subdirectories
    name: List directories for parallelizing tests
    runs-on: ubuntu-latest
    outputs:
      dir: ${{ steps.set-dirs.outputs.dir }} # generate output name dir by using inner step output
    steps:
      - uses: actions/checkout@v3
      - id: set-dirs # Give it an id to handle to get step outputs in the outputs key above
        run: echo "::set-output name=dir::$(ls -d */ | jq -R -s -c 'split("\n")[:-1]')"
        # Define step output named dir base on ls command transformed to JSON thanks to jq
  test:
    name: Test
    runs-on: ubuntu-latest
    needs: [directories] # Depends on previous job
    strategy:
      matrix:
        dir: ${{fromJson(needs.directories.outputs.dir)}} # List matrix strategy from directories dynamically
        # rust:
        #   - stable
        #   - nightly
        exclude:
          - dir: scripts/
          - dir: curve-constraint-tests/
          - dir: mnt4_753/
          - dir: mnt6_753/
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Run tests
        run: |
          cd ${{matrix.dir}}
          cargo test --all-features

  test-mnt4-753:
    name: Test (mnt4_753/)
    runs-on: macos-latest
    needs: [directories] # Waits for the directory listing job
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Run tests
        run: |
          cd mnt4_753/
          cargo test --all-features

  test-mnt6-753:
    name: Test (mnt6_753/)
    runs-on: macos-latest
    needs: [directories] # Waits for the directory listing job
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Run tests
        run: |
          cd mnt6_753/
          cargo test --all-features

  docs:
    name: Check Documentation
    runs-on: ubuntu-latest
    steps:

    - name: Checkout
      uses: actions/checkout@v3
    - name: Install Rust
      uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: stable
        override: true
        components: rustfmt

    - name: cargo doc --all --no-deps --document-private-items --all-features
      uses: actions-rs/cargo@v1
      with:
        command: doc
        args: --all --no-deps --document-private-items --all-features

  check_no_std:
    name: Check no_std
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Rust (${{ matrix.rust }})
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          target: aarch64-unknown-none
          override: true

      - uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

      - name: check
        uses: actions-rs/cargo@v1
        with:
            command: check
            args: --examples --workspace --exclude ark-curve-constraint-tests --target aarch64-unknown-none

      - name: build
        uses: actions-rs/cargo@v1
        with:
            command: build
            args: --workspace --exclude ark-curve-constraint-tests --target aarch64-unknown-none