main.yml

name: CI

on: 
  # push: -- just run on PRs for now
  pull_request:
  workflow_dispatch:

jobs:
  build_feature_branch:
    runs-on: ubuntu-latest

    services:
      postgres:
        image: postgis/postgis:13-3.0
        env:
          POSTGRES_PASSWORD: postgis
          POSTGRES_DB: arches_lingo
        ports:
          - 5432:5432
        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5

    strategy:
      fail-fast: false
      matrix:
        python-version: ["3.10", "3.11", "3.12"]

    steps:
      - uses: actions/checkout@v4

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}
          check-latest: true

      - name: Install Java, GDAL, and other system dependencies
        run: |
          sudo apt update
          sudo apt-get install libxml2-dev libpq-dev openjdk-8-jdk libgdal-dev libxslt-dev
          echo Postgres and ES dependencies installed

      - name: Install Python packages
        run: |
          python -m pip install --upgrade pip
          pip install .
          pip install -r arches_lingo/install/requirements.txt
          pip install -r arches_lingo/install/requirements_dev.txt
          echo Python packages installed

      - uses: ankane/setup-elasticsearch@v1
        with:
          elasticsearch-version: 8

      - name: Webpack frontend files
        run: |
          echo "Checking for package.json..."
          if [ -f package.json ]; then
            echo "package.json found, building static bundle."
            npm install && npm run build_test
          else
            echo "package.json not found, skipping npm commands."
          fi

      - name: Run frontend tests
        run: |
          npm run vitest
          mv coverage/frontend/coverage.xml feature_branch_frontend_coverage.xml

      - name: Check for missing migrations
        run: |
          python manage.py makemigrations --check

      - name: Ensure previous Python coverage data is erased
        run: |
          coverage erase

      - name: Run Python unit tests
        run: |
          python -W default::DeprecationWarning -m coverage run manage.py test tests --settings="tests.test_settings"

      - name: Generate Python report coverage
        run: |
          coverage report
          coverage json
          mv coverage/python/coverage.json feature_branch_python_coverage.json

      - name: Upload frontend coverage report as artifact
        uses: actions/upload-artifact@v4
        with:
          name: feature-branch-frontend-coverage-report
          path: feature_branch_frontend_coverage.xml
          overwrite: true

      - name: Upload Python coverage report as artifact
        uses: actions/upload-artifact@v4
        with:
          name: feature-branch-python-coverage-report
          path: feature_branch_python_coverage.json
          overwrite: true

  build_target_branch:
    runs-on: ubuntu-latest

    services:
      postgres:
        image: postgis/postgis:13-3.0
        env:
          POSTGRES_PASSWORD: postgis
          POSTGRES_DB: arches_lingo
        ports:
          - 5432:5432
        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5

    strategy:
      fail-fast: false
      matrix:
        python-version: ["3.12"]

    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.base.ref }}

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}
          check-latest: true

      - name: Install Java, GDAL, and other system dependencies
        run: |
          sudo apt update
          sudo apt-get install libxml2-dev libpq-dev openjdk-8-jdk libgdal-dev libxslt-dev
          echo Postgres and ES dependencies installed

      - name: Install Python packages
        run: |
          python -m pip install --upgrade pip
          pip install .
          pip install -r arches_lingo/install/requirements.txt
          pip install -r arches_lingo/install/requirements_dev.txt
          echo Python packages installed

      - uses: ankane/setup-elasticsearch@v1
        with:
          elasticsearch-version: 8

      - name: Webpack frontend files
        run: |
          echo "Checking for package.json..."
          if [ -f package.json ]; then
            echo "package.json found, building static bundle."
            npm install && npm run build_test
          else
            echo "package.json not found, skipping npm commands."
          fi

      - name: Run frontend tests
        run: |
          if [ -f vitest.config.json ]; then
            npm run vitest
            mv coverage/frontend/coverage.xml target_branch_frontend_coverage.xml
          else
            echo "Unable to find vitest config. Skipping frontend tests."
          fi

      - name: Check for missing migrations
        run: |
          python manage.py makemigrations --check

      - name: Ensure previous Python coverage data is erased
        run: |
          coverage erase

      - name: Run Python unit tests
        run: |
          python -W default::DeprecationWarning -m coverage run manage.py test tests --settings="tests.test_settings"

      - name: Generate Python report coverage
        run: |
          coverage report
          coverage json

          # handles older target branch
          if [ -f coverage/python/coverage.json ]; then
            mv coverage/python/coverage.json target_branch_python_coverage.json
          else
            mv coverage.json target_branch_python_coverage.json
          fi

      - name: Upload frontend coverage report as artifact
        uses: actions/upload-artifact@v4
        with:
          name: target-branch-frontend-coverage-report
          path: target_branch_frontend_coverage.xml
          overwrite: true

      - name: Upload Python coverage report as artifact
        uses: actions/upload-artifact@v4
        with:
          name: target-branch-python-coverage-report
          path: target_branch_python_coverage.json
          overwrite: true

  check_frontend_coverage:
    runs-on: ubuntu-latest
    needs: [build_feature_branch, build_target_branch]
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.x' # Use the latest available version
          check-latest: true

      - name: Download feature branch frontend coverage report artifact
        uses: actions/download-artifact@v4
        with:
          name: feature-branch-frontend-coverage-report
          path: .

      - name: Extract feature branch frontend coverage data
        shell: pwsh
        run: |
          [xml]$xml = Get-Content feature_branch_frontend_coverage.xml
          $metrics = $xml.coverage.project.metrics

          $statements = [double]$metrics.statements
          $coveredstatements = [double]$metrics.coveredstatements
          $conditionals = [double]$metrics.conditionals
          $coveredconditionals = [double]$metrics.coveredconditionals
          $methods = [double]$metrics.methods
          $coveredmethods = [double]$metrics.coveredmethods
          $elements = [double]$metrics.elements
          $coveredelements = [double]$metrics.coveredelements

          $statement_coverage = 0.0
          $conditional_coverage = 0.0
          $method_coverage = 0.0
          $element_coverage = 0.0

          if ($statements -gt 0) {
              $statement_coverage = ($coveredstatements / $statements) * 100
          }
          if ($conditionals -gt 0) {
              $conditional_coverage = ($coveredconditionals / $conditionals) * 100
          }
          if ($methods -gt 0) {
              $method_coverage = ($coveredmethods / $methods) * 100
          }
          if ($elements -gt 0) {
              $element_coverage = ($coveredelements / $elements) * 100
          }

          $nonZeroCount = 0
          $totalCoverage = 0.0

          if ($statements -gt 0) { $nonZeroCount++; $totalCoverage += $statement_coverage }
          if ($conditionals -gt 0) { $nonZeroCount++; $totalCoverage += $conditional_coverage }
          if ($methods -gt 0) { $nonZeroCount++; $totalCoverage += $method_coverage }
          if ($elements -gt 0) { $nonZeroCount++; $totalCoverage += $element_coverage }

          $feature_branch_frontend_coverage = 0.0
          if ($nonZeroCount -gt 0) {
              $feature_branch_frontend_coverage = $totalCoverage / $nonZeroCount
          }

          Write-Output "feature_branch_frontend_coverage=$feature_branch_frontend_coverage" | Out-File -Append $env:GITHUB_ENV

      - name: Download target branch frontend coverage report artifact
        continue-on-error: true
        uses: actions/download-artifact@v4
        with:
          name: target-branch-frontend-coverage-report
          path: .

      - name: Check if target branch frontend coverage report artifact exists
        run: |
          if [ -f target_branch_frontend_coverage.xml ]; then
            echo "target_branch_frontend_coverage_artifact_exists=true" >> $GITHUB_ENV
          else
            echo "Target branch coverage not found. Defaulting to 0% coverage."
            echo "target_branch_frontend_coverage_artifact_exists=false" >> $GITHUB_ENV
          fi

      - name: Extract target branch frontend coverage data
        if: ${{ env.target_branch_frontend_coverage_artifact_exists == 'true' }}
        shell: pwsh
        run: |
          [xml]$xml = Get-Content target_branch_frontend_coverage.xml
          $metrics = $xml.coverage.project.metrics

          $statements = [double]$metrics.statements
          $coveredstatements = [double]$metrics.coveredstatements
          $conditionals = [double]$metrics.conditionals
          $coveredconditionals = [double]$metrics.coveredconditionals
          $methods = [double]$metrics.methods
          $coveredmethods = [double]$metrics.coveredmethods
          $elements = [double]$metrics.elements
          $coveredelements = [double]$metrics.coveredelements

          $statement_coverage = 0.0
          $conditional_coverage = 0.0
          $method_coverage = 0.0
          $element_coverage = 0.0

          if ($statements -gt 0) {
              $statement_coverage = ($coveredstatements / $statements) * 100
          }
          if ($conditionals -gt 0) {
              $conditional_coverage = ($coveredconditionals / $conditionals) * 100
          }
          if ($methods -gt 0) {
              $method_coverage = ($coveredmethods / $methods) * 100
          }
          if ($elements -gt 0) {
              $element_coverage = ($coveredelements / $elements) * 100
          }

          $nonZeroCount = 0
          $totalCoverage = 0.0

          if ($statements -gt 0) { $nonZeroCount++; $totalCoverage += $statement_coverage }
          if ($conditionals -gt 0) { $nonZeroCount++; $totalCoverage += $conditional_coverage }
          if ($methods -gt 0) { $nonZeroCount++; $totalCoverage += $method_coverage }
          if ($elements -gt 0) { $nonZeroCount++; $totalCoverage += $element_coverage }

          $target_branch_frontend_coverage = 0.0
          if ($nonZeroCount -gt 0) {
              $target_branch_frontend_coverage = $totalCoverage / $nonZeroCount
          }

          Write-Output "target_branch_frontend_coverage=$target_branch_frontend_coverage" | Out-File -Append $env:GITHUB_ENV

      - name: Compare frontend feature coverage with target coverage
        if: github.event_name == 'pull_request'
        run: |
          feature_branch_frontend_coverage=${feature_branch_frontend_coverage}
          target_branch_frontend_coverage=${target_branch_frontend_coverage:-0.0}

          # Compare feature coverage with target coverage using floating-point comparison
          if awk -v feature="$feature_branch_frontend_coverage" -v target="$target_branch_frontend_coverage" 'BEGIN { exit (feature < target) ? 0 : 1 }'; then
            echo "Coverage decreased from $target_branch_frontend_coverage% to $feature_branch_frontend_coverage%. Please add or update tests to increase coverage."
            exit 1
          else
            echo "Feature branch coverage ($feature_branch_frontend_coverage%) >= Target branch coverage ($target_branch_frontend_coverage%)."
          fi

  check_python_coverage:
    runs-on: ubuntu-latest
    needs: [build_feature_branch, build_target_branch]
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.x' # Use the latest available version
          check-latest: true

      - name: Download feature branch Python coverage report artifact
        uses: actions/download-artifact@v4
        with:
          name: feature-branch-python-coverage-report
          path: .

      - name: Download target branch Python coverage report artifact
        uses: actions/download-artifact@v4
        with:
          name: target-branch-python-coverage-report
          path: .

      - name: Compare Python feature coverage with target coverage
        if: github.event_name == 'pull_request'
        run: |
          feature_branch_python_coverage=$(cat feature_branch_python_coverage.json | grep -o '"totals": {[^}]*' | grep -o '"percent_covered": [0-9.]*' | awk -F ': ' '{print $2}')
          target_branch_python_coverage=$(cat target_branch_python_coverage.json | grep -o '"totals": {[^}]*' | grep -o '"percent_covered": [0-9.]*' | awk -F ': ' '{print $2}')

          # Compare feature coverage with target coverage using floating-point comparison
          if awk -v feature="$feature_branch_python_coverage" -v target="$target_branch_python_coverage" 'BEGIN { exit (feature < target) ? 0 : 1 }'; then
            echo "Coverage decreased from $target_branch_python_coverage% to $feature_branch_python_coverage%. Please add or update tests to increase coverage."
            exit 1
          else
            echo "Feature branch coverage ($feature_branch_python_coverage%) >= Target branch coverage ($target_branch_python_coverage%)."
          fi