.github/workflows/errorprone.yml

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name: Error Prone Analysis

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  errorprone:
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v4

      - name: Set up JDK 11
        uses: actions/setup-java@v4
        with:
          java-version: '11'
          distribution: 'adopt'
          architecture: x64
          cache: maven

      - name: Run Error Prone Static Analysis
        run: |
          echo "::group::Error Prone Analysis"
          mvn clean compile -DskipTests -T$(nproc) 2>&1 | tee errorprone.log
          echo "::endgroup::"
        continue-on-error: true

      - name: Check for Error Prone Issues
        id: check-errors
        run: |
          if grep -q "error: \[" errorprone.log; then
            echo "has_errors=true" >> $GITHUB_OUTPUT
            echo "::error::Error Prone found issues in the code"
            echo ""
            echo "=== Error Prone Issues Found ==="
            grep -B 2 "error: \[" errorprone.log | head -50
            echo ""
            
            # Create job summary
            echo "## ⚠️ Error Prone Analysis Failed" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "Error Prone static analysis detected issues in this PR." >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "### Issues Found (first 50):" >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            grep -B 2 "error: \[" errorprone.log | head -50 >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "See the [Error Prone documentation](https://errorprone.info/) for details on each bug pattern." >> $GITHUB_STEP_SUMMARY
          else
            echo "has_errors=false" >> $GITHUB_OUTPUT
            echo "✅ No Error Prone issues found"
            
            # Create success summary
            echo "## ✅ Error Prone Analysis Passed" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "No issues detected by Error Prone static analysis." >> $GITHUB_STEP_SUMMARY
          fi


      - name: Fail if errors found
        if: steps.check-errors.outputs.has_errors == 'true'
        run: exit 1