name: Continuous Integration
on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  merge_group:
    branches: [main]

jobs:
  linters:
    name: Linters
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:14
        env:
          POSTGRES_USER: tps_test
          POSTGRES_DB: tps_test
          POSTGRES_PASSWORD: tps_test
        ports: [ "5432:5432" ]

    steps:
      - uses: actions/checkout@v3

      - name: Setup the app code and dependancies
        uses: ./.github/actions/ci-setup-rails

      - name: Run linters
        run: |
          bundle exec rake lint
          bundle exec rake zeitwerk:check

  js_tests:
    name: JavaScript tests
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3

      - name: Setup Node
        uses: actions/setup-node@v3
        with:
          cache: 'yarn'

      - name: Install Node modules
        run: |
          node --version
          yarn install --frozen-lockfile
        shell: bash

      - name: Run tests
        run: |
          yarn test

  unit_tests:
    name: Unit tests
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:14
        env:
          POSTGRES_USER: tps_test
          POSTGRES_DB: tps_test
          POSTGRES_PASSWORD: tps_test
        ports: ["5432:5432"]

    strategy:
      matrix:
        instances: [0, 1, 2, 3, 4, 5]

    steps:
      - uses: actions/checkout@v3

      - name: Setup the app runtime and dependencies
        uses: ./.github/actions/ci-setup-rails

      - name: Pre-compile assets
        uses: ./.github/actions/ci-setup-assets

      - name: Setup split tests
        uses: ./.github/actions/ci-setup-split-tests
        with:
          results_path: tmp/*.junit.xml

      - name: Run tests
        run: |
          SPEC_FILES=$(./split_tests -glob='spec/**/*_spec.rb' -exclude-glob='spec/system/**' -split-index=${{ strategy.job-index }} -split-total=${{ strategy.job-total }} -junit -junit-path=tmp/*.junit.xml)
          echo "Running tests for bin/rspec $SPEC_FILES"
          bin/rspec $SPEC_FILES --format progress --format RspecJunitFormatter --out tmp/rspec_${{ github.job }}_${{ strategy.job-index }}.junit.xml

      - name: Upload test results for this instance
        uses: actions/upload-artifact@v3
        with:
          name: test-reports
          path: tmp/rspec_${{ github.job }}_${{ strategy.job-index }}.junit.xml

  system_tests:
    name: System tests
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:14
        env:
          POSTGRES_USER: tps_test
          POSTGRES_DB: tps_test
          POSTGRES_PASSWORD: tps_test
        ports: ["5432:5432"]

    strategy:
      matrix:
        instances: [0, 1]

    steps:
      - uses: actions/checkout@v3

      - name: Setup the app runtime and dependencies
        uses: ./.github/actions/ci-setup-rails

      - name: Pre-compile assets
        uses: ./.github/actions/ci-setup-assets

      - name: Setup split tests
        uses: ./.github/actions/ci-setup-split-tests
        with:
          results_path: tmp/*.junit.xml

      - name: Run tests
        run: |
          SPEC_FILES=$(./split_tests -glob='spec/system/**/*_spec.rb' -split-index=${{ strategy.job-index }} -split-total=${{ strategy.job-total }} -junit -junit-path=tmp/*.junit.xml)
          echo "Running tests for bin/rspec $SPEC_FILES"
          RAILS_ENV=test bin/rspec $SPEC_FILES --format progress --format RspecJunitFormatter --out tmp/rspec_${{ github.job }}_${{ strategy.job-index }}.junit.xml

      - name: Upload test results for this instance
        uses: actions/upload-artifact@v3
        with:
          name: test-reports
          path: tmp/rspec_${{ github.job }}_${{ strategy.job-index }}.junit.xml

  save_test_reports:
    name: Save test reports
    needs: [unit_tests, system_tests]
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3

      - name: Collect test results from all instances
        uses: actions/download-artifact@v3
        with:
          name: test-reports
          path: tmp

      - name: Save test results and timing data, to better split future tests
        uses: ./.github/actions/ci-save-split-tests
        with:
          results_path: tmp/*.junit.xml