name: Rust CI

on:
  push:
    branches:
      - 'main'
  pull_request:

concurrency:
  group: '${{ github.workflow }}-${{ github.head_ref || github.ref }}'
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

env:
  CARGO_TERM_COLOR: always

jobs:
  build_and_test:
    name: Build and test crates on ${{ matrix.os }} with rust ${{ matrix.toolchain }}

    strategy:
      fail-fast: true
      matrix:
        os:
          - 'ubuntu-latest'
          - 'macos-latest'
          - 'windows-latest'
        toolchain:
          - 'stable'

        # Test `beta` and `nightly` toolchains only on `ubuntu`
        # https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/running-variations-of-jobs-in-a-workflow#expanding-or-adding-matrix-configurations
        include:
          - toolchain: 'beta'
            os: 'ubuntu-latest'
          - toolchain: 'nightly'
            os: 'ubuntu-latest'

    runs-on: ${{ matrix.os }}
    timeout-minutes: 15

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup rust toolchain
        uses: actions-rust-lang/setup-rust-toolchain@v1
        with:
          toolchain: ${{ matrix.toolchain }}

      - run: cargo build --verbose
      - run: cargo test --verbose

  lint_and_fmt:
    name: Check format and lint rust crates
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup rust toolchain
        uses: actions-rust-lang/setup-rust-toolchain@v1

      - run: cargo fmt --all -- --check
      - run: cargo clippy -- -D warnings

  ci_ok:
    name: Rust CI OK
    runs-on: ubuntu-latest
    timeout-minutes: 1
    if: always()
    needs:
      - build_and_test
      - lint_and_fmt
    steps:
      - name: Exit with error if some jobs are not successful
        run: exit 1
        if: ${{ always() && (contains(needs.*.result, 'failure') || contains(needs.*.result, 'skipped') || contains(needs.*.result, 'cancelled')) }}