name: Dart CI

on:
  # Run on PRs and pushes to the default branch.
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]
  schedule:
    - cron: "0 0 * * 0"

env:
  PUB_ENVIRONMENT: bot.github

jobs:
  # Check code formatting and static analysis on a single OS (linux)
  # against Dart dev.
  analyze:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        sdk: [dev]
    steps:
      - uses: actions/checkout@v2
      - uses: dart-lang/setup-dart@v1.0
        with:
          sdk: ${{ matrix.sdk }}
      - id: install
        name: Install dependencies
        run: dart pub get
      - name: Check formatting
        run: dart format --output=none --set-exit-if-changed .
        if: always() && steps.install.outcome == 'success'
      - name: Analyze code
        run: dart analyze --fatal-infos
        if: always() && steps.install.outcome == 'success'

  # Run tests on a matrix consisting of two dimensions:
  # 1. OS: ubuntu-latest, macos-latest, windows-latest
  # 2. release channel: dev
  test:
    needs: analyze
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        sdk: [2.15.0, dev]
    steps:
      - uses: actions/checkout@v2
      - uses: dart-lang/setup-dart@v1.0
        with:
          sdk: ${{ matrix.sdk }}
      - id: install
        name: Install dependencies
        run: dart pub get
      - name: Run VM tests
        run: dart test --platform vm
        if: always() && steps.install.outcome == 'success'

  coverage:
    needs: test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: dart-lang/setup-dart@v1.0
        with:
          sdk: dev
      - id: install
        name: Install dependencies
        run: dart pub get
      - name: Collect and report coverage
        run: dart run bin/test_with_coverage.dart --port=9292
      - name: Upload coverage
        uses: coverallsapp/github-action@v1.1.2
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          path-to-lcov: coverage/lcov.info

  benchmark:
    needs: test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: dart-lang/setup-dart@v1.0
        with:
          sdk: dev
      - name: Install dependencies
        run: dart pub get
      - name: Run benchmark
        run: dart run benchmark/run_benchmarks.dart
      - name: Download previous benchmark data
        uses: actions/cache@v1
        with:
          path: benchmark/data/cache
          key: ${{ runner.os }}-benchmark
      - name: Check benchmark result
        uses: benchmark-action/github-action-benchmark@v1
        with:
          tool: 'customSmallerIsBetter'
          github-token: ${{ secrets.GITHUB_TOKEN }}
          output-file-path: benchmark/data/benchmark_result.json
          external-data-json-path: benchmark/data/cache/benchmark_result.json
          fail-on-alert: true
          comment-always: true
          alert-threshold: 150%