minification.yml

name: Minification Compatibility Test

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

jobs:
  minification_compatibility_test:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
      
      - name: Setup Flutter
        uses: subosito/flutter-action@v2
        with:
          channel: 'stable'
          architecture: x64
          cache: true
          
      - name: Setup Java
        uses: actions/setup-java@v3
        with:
          distribution: 'temurin'
          java-version: '17'

      - name: Configure Gradle JVM options
        run: |
          mkdir -p ~/.gradle
          cat > ~/.gradle/gradle.properties << 'EOF'
          # Increase heap size for CI builds
          org.gradle.jvmargs=-Xmx4g -XX:MaxMetaspaceSize=1g -XX:+HeapDumpOnOutOfMemoryError
          org.gradle.daemon=true
          org.gradle.parallel=true
          org.gradle.configureondemand=true
          android.enableJetifier=true
          android.useAndroidX=true
          EOF

      - name: Configure Android build options
        run: |
          cat >> example/android/gradle.properties << 'EOF'
          
          # Memory optimization for CI
          org.gradle.jvmargs=-Xmx3g -XX:MaxMetaspaceSize=512m
          android.enableJetifier=true
          android.useAndroidX=true
          EOF

      - name: Install dependencies
        run: |
          flutter pub get
          cd example && flutter pub get

      - name: Create ProGuard rules for example app
        run: |
          cat > example/android/app/proguard-rules.pro << 'EOF'
          # Example app ProGuard rules for minification testing
          
          # Keep example app classes
          -keep class com.optimizely.optimizely_flutter_sdk_example.** { *; }
          
          # Keep Flutter classes
          -keep class io.flutter.app.** { *; }
          -keep class io.flutter.plugins.GeneratedPluginRegistrant { *; }
          
          # Google Play Core (for Flutter engine)
          -keep class com.google.android.play.core.** { *; }
          -dontwarn com.google.android.play.core.**
          
          # Additional safety for Optimizely
          -keep class com.optimizely.** { *; }
          -dontwarn com.optimizely.**
          
          # Jackson JSON
          -keep class com.fasterxml.jackson.** { *; }
          -dontwarn com.fasterxml.jackson.**
          
          # Ignore missing classes
          -dontwarn javax.mail.**
          -dontwarn javax.activation.**
          EOF

      - name: Test with minification ENABLED
        run: |
          echo "🧪 Testing with minifyEnabled = true"
          
          # Backup original build.gradle
          cp example/android/app/build.gradle example/android/app/build.gradle.backup
          
          # Enable minification
          sed -i 's/minifyEnabled false/minifyEnabled true/' example/android/app/build.gradle
          sed -i 's/shrinkResources false/shrinkResources true/' example/android/app/build.gradle
          
          # Ensure ProGuard rules are applied
          if ! grep -q "proguardFiles.*proguard-rules.pro" example/android/app/build.gradle; then
            sed -i '/minifyEnabled true/a\            proguardFiles getDefaultProguardFile('\''proguard-android-optimize.txt'\''), '\''proguard-rules.pro'\''' example/android/app/build.gradle
          fi
          
          echo "📄 Build configuration with minification:"
          grep -A 5 "buildTypes" example/android/app/build.gradle
          
          # Build for single architecture to save memory
          cd example
          flutter build apk --release --target-platform android-arm64 --split-per-abi
          
          echo "✅ Build successful with minification ENABLED"

      - name: Test with minification DISABLED  
        run: |
          echo "🧪 Testing with minifyEnabled = false"
          
          # Restore original
          cp example/android/app/build.gradle.backup example/android/app/build.gradle
          sed -i 's/minifyEnabled true/minifyEnabled false/' example/android/app/build.gradle
          sed -i 's/shrinkResources true/shrinkResources false/' example/android/app/build.gradle
          
          echo "📄 Build configuration without minification:"
          grep -A 5 "buildTypes" example/android/app/build.gradle
          
          # Clean and build
          cd example
          flutter clean
          flutter build apk --release --target-platform android-arm64 --split-per-abi
          
          echo "✅ Build successful with minification DISABLED"

      - name: Run unit tests
        run: flutter test
        
      - name: Verify APK artifacts
        run: |
          echo "📱 Checking APK files:"
          find example/build/app/outputs/apk/ -name "*.apk" -exec ls -la {} \;

      - name: Check for ProGuard artifacts
        run: |
          echo "🔍 Checking for ProGuard/R8 artifacts:"
          if [ -f "example/build/app/outputs/mapping/release/mapping.txt" ]; then
            echo "✅ ProGuard mapping file found"
            echo "📄 Mapping file size: $(wc -l < example/build/app/outputs/mapping/release/mapping.txt) lines"
          else
            echo "ℹ️ No mapping file found"
          fi

      - name: Upload APK artifacts
        uses: actions/upload-artifact@v4
        with:
          name: minification-test-apk
          path: |
            example/build/app/outputs/apk/release/*.apk
            example/build/app/outputs/mapping/release/mapping.txt
          retention-days: 7

      - name: Report test results
        run: |
          echo "🎉 Minification compatibility test completed!"
          echo "✅ minifyEnabled = true: PASSED"
          echo "✅ minifyEnabled = false: PASSED" 
          echo "✅ Memory optimizations applied successfully"

      - name: Cleanup
        if: always()
        run: |
          if [ -f "example/android/app/build.gradle.backup" ]; then
            mv example/android/app/build.gradle.backup example/android/app/build.gradle
            echo "✅ Restored original build.gradle"
          fi