name: CI
on:
  pull_request:
  push:
    branches:
      - master

env:
  RUST_BACKTRACE: 1

jobs:
  ci-pass:
    name: CI is green
    runs-on: ubuntu-latest
    needs:
      - style
      - test
      - features
      - doc
    steps:
      - run: exit 0

  style:
    name: Check Style
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v1

      - 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

  test:
    name: Test ${{ matrix.rust }} on ${{ matrix.os }}
    needs: [style]
    strategy:
      matrix:
        rust:
          - stable
          - beta
          - nightly
          - 1.45.2

        os:
          - ubuntu-latest
          - windows-latest
          - macOS-latest

        include:
          - rust: stable
            features: ""
          - rust: beta
            features: ""
          - rust: nightly
            features: "--features nightly"
            benches: true

    runs-on: ${{ matrix.os }}

    steps:
      - name: Checkout
        uses: actions/checkout@v1

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

      - name: Test
        uses: actions-rs/cargo@v1
        with:
          command: test
          args: ${{ matrix.features }}

      - name: Test all benches
        if: matrix.benches
        uses: actions-rs/cargo@v1
        with:
          command: test
          args: --benches ${{ matrix.features }}

  features:
    name: features
    needs: [style]
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v1

      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly
          override: true

      - name: Install cargo-hack
        run: cargo install cargo-hack

      - name: check --each-feature
        run: cargo hack check --each-feature -Z avoid-dev-deps

  doc:
    name: Build docs
    needs: [style, test]
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v1

      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly
          override: true

      - name: cargo doc
        uses: actions-rs/cargo@v1
        with:
          command: rustdoc
          args: -- -D broken-intra-doc-links