name: Build, Lint & Coverage

on:
  push:
    branches: [ "master" ]
  pull_request:
    branches: [ "master" ]

env:
  BUILD_TYPE: Release

jobs:
  # Linting job with MegaLinter
  megalinter:
    name: MegaLinter
    runs-on: ubuntu-latest
    permissions:
      contents: read
      issues: write
      pull-requests: write

    steps:
      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
        with:
          fetch-depth: 0

      - name: MegaLinter
        uses: oxsecurity/megalinter/flavors/c_cpp@v9.1.0
        env:
          VALIDATE_ALL_CODEBASE: true
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          # Disable specific linters
          DISABLE_LINTERS: SPELL_CSPELL
          # Fail on errors (set to false if you want warnings only)
          DISABLE_ERRORS: false

      - name: Archive MegaLinter reports
        if: always()
        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4
        with:
          name: megalinter-reports
          path: |
            megalinter-reports
            mega-linter.log

  # Build, test and coverage job
  build-and-test:
    name: Build, Test & Coverage
    runs-on: ubuntu-latest
    needs: megalinter
    if: success() || failure()

    steps:
      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
        with:
          fetch-depth: 0

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            libcap-dev \
            lcov \
            cpputest

      - name: Set up Python for gcovr
        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548
        with:
          python-version: '3.11'

      - name: Install gcovr
        run: pip install gcovr

      - name: Configure CMake
        run: |
          cmake -S ${{github.workspace}}/source \
            -B ${{github.workspace}}/build \
            -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} \
            -DOpENer_PLATFORM:STRING="POSIX" \
            -DBUILD_SHARED_LIBS:BOOL=OFF \
            -DOpENer_TRACES:BOOL=OFF \
            -DOpENer_TESTS:BOOL=ON \
            -DCPPUTEST_HOME:PATH=/usr

      - name: Build
        run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}

      - name: Test
        working-directory: ${{github.workspace}}/build
        run: ctest -C ${{env.BUILD_TYPE}} --output-on-failure

      - name: Generate coverage reports
        run: |
          # Generate HTML report for human viewing
          gcovr --html-details --output coverage-report.html

          # Generate Cobertura XML for tools/badges
          gcovr --cobertura --output coverage.xml

          # Generate text summary for console
          gcovr --print-summary > coverage-summary.txt

          # Print summary to console
          echo "Coverage Summary:"
          cat coverage-summary.txt

      - name: Upload coverage reports
        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4
        with:
          name: coverage-report
          path: |
            coverage-report.html
            coverage-report.*.html
            coverage.xml
            coverage-summary.txt

      - name: Create coverage summary comment
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const summary = fs.readFileSync('coverage-summary.txt', 'utf8');
            const comment = `## 📊 Coverage Report\n\n\`\`\`\n${summary}\n\`\`\`\n\nDownload the [detailed HTML report](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}) from the artifacts.`;

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: comment
            });

      - name: Generate coverage badge
        if: github.ref == 'refs/heads/master'
        run: |
          # Extract coverage percentage
          COVERAGE=$(gcovr --print-summary | grep 'lines:' | awk '{print $2}')
          echo "COVERAGE_PERCENTAGE=$COVERAGE" >> $GITHUB_ENV
          echo "Coverage: $COVERAGE"

      - name: Upload build artifacts
        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4
        with:
          name: build-artifacts
          path: ${{github.workspace}}/build