name: Rust CI

on:
  pull_request:
  push:
    branches:
      - master
      - staging
      - trying

jobs:

  fmt:
    name: Rustfmt
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v1
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: 1.49.0
          override: true
      - run: rustup component add rustfmt
      - uses: actions-rs/cargo@v1
        with:
          command: fmt
          args: --all -- --check

  run_clippy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v1
      - uses: actions-rs/toolchain@v1
        with:
            toolchain: 1.49.0
            components: clippy
            override: true
      - uses: actions-rs/clippy-check@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          args: --workspace --tests --examples

  docs:
    name: Rust doc comments
    runs-on: ubuntu-latest
    env:
      RUSTDOCFLAGS: -Dwarnings
    steps:
      - name: Checkout sources
        uses: actions/checkout@v2
      - name: Install rust stable toolchain
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          profile: minimal
          components: rust-docs
          override: true
      - name: Cache rust cargo artifacts
        uses: swatinem/rust-cache@v1
      - name: Rustdoc
        uses: actions-rs/cargo@v1
        with:
          command: doc
          args: --document-private-items --no-deps

  build_and_test:
    name: Build and test
    runs-on: ${{ matrix.os }}
    continue-on-error: ${{ matrix.experimental }}
    strategy:
      matrix:
        # macOS disabled due to random failures related to caching
        #os: [ubuntu-latest, windows-latest, macOS-latest]
        os: [ubuntu-latest, windows-latest]
        rust: [1.49.0]
        experimental: [false]
#        include:
#          - os: ubuntu-latest
#            rust: nightly
#            experimental: true
#          - os: windows-latest
#            rust: nightly
#            experimental: true
#          - os: macOS-latest
#            rust: nightly
#            experimental: true

    steps:
    - uses: actions/checkout@master

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

    - name: Cache cargo registry
      uses: actions/cache@v2
      with:
        path: ~/.cargo/registry
        key: ${{ matrix.os }}-${{ matrix.rust }}-cargo-registry-${{ hashFiles('**/Cargo.toml') }}

    - name: Cache cargo index
      uses: actions/cache@v2
      with:
        path: ~/.cargo/git
        key: ${{ matrix.os }}-${{ matrix.rust }}-cargo-index-${{ hashFiles('**/Cargo.toml') }}

    - name: Cache cargo build
      uses: actions/cache@v2
      with:
        path: target
        key: ${{ matrix.os }}-${{ matrix.rust }}-cargo-build-target-${{ hashFiles('**/Cargo.toml') }}

    - name: check
      uses: actions-rs/cargo@v1
      with:
        command:  check
        args: --all --bins --examples --tests --features repl

    - name: tests
      uses: actions-rs/cargo@v1
      with:
        command: test
        args: --all