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‎.github/workflows/flutter.yml‎

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channel: 'stable'
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architecture: x64
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- run: flutter pub get
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- run: flutter test
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- run: flutter test

‎.github/workflows/minification.yml‎

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name: Minification Compatibility Test
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on:
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push:
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branches: [ "master" ]
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pull_request:
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branches: [ "master" ]
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workflow_dispatch:
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jobs:
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minification_compatibility_test:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout code
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uses: actions/checkout@v3
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- name: Setup Flutter
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uses: subosito/flutter-action@v2
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with:
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channel: 'stable'
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architecture: x64
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cache: true
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- name: Setup Java
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uses: actions/setup-java@v3
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with:
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distribution: 'temurin'
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java-version: '17'
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- name: Configure Gradle JVM options
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run: |
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mkdir -p ~/.gradle
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cat > ~/.gradle/gradle.properties << 'EOF'
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# Increase heap size for CI builds
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org.gradle.jvmargs=-Xmx4g -XX:MaxMetaspaceSize=1g -XX:+HeapDumpOnOutOfMemoryError
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org.gradle.daemon=true
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org.gradle.parallel=true
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org.gradle.configureondemand=true
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android.enableJetifier=true
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android.useAndroidX=true
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EOF
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- name: Configure Android build options
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run: |
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cat >> example/android/gradle.properties << 'EOF'
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# Memory optimization for CI
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org.gradle.jvmargs=-Xmx3g -XX:MaxMetaspaceSize=512m
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android.enableJetifier=true
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android.useAndroidX=true
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EOF
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- name: Install dependencies
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run: |
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flutter pub get
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cd example && flutter pub get
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- name: Create ProGuard rules for example app
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run: |
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cat > example/android/app/proguard-rules.pro << 'EOF'
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# Example app ProGuard rules for minification testing
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# Keep example app classes
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-keep class com.optimizely.optimizely_flutter_sdk_example.** { *; }
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# Keep Flutter classes
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-keep class io.flutter.app.** { *; }
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-keep class io.flutter.plugins.GeneratedPluginRegistrant { *; }
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# Google Play Core (for Flutter engine)
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-keep class com.google.android.play.core.** { *; }
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-dontwarn com.google.android.play.core.**
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# Jackson JSON
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-keep class com.fasterxml.jackson.** { *; }
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-dontwarn com.fasterxml.jackson.**
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# Ignore missing classes
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-dontwarn javax.mail.**
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-dontwarn javax.activation.**
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EOF
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- name: Test with minification ENABLED
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run: |
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echo "🧪 Testing with minifyEnabled = true"
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# Backup original build.gradle
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cp example/android/app/build.gradle example/android/app/build.gradle.backup
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# Enable minification
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sed -i 's/minifyEnabled false/minifyEnabled true/' example/android/app/build.gradle
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sed -i 's/shrinkResources false/shrinkResources true/' example/android/app/build.gradle
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# Ensure ProGuard rules are applied
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if ! grep -q "proguardFiles.*proguard-rules.pro" example/android/app/build.gradle; then
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sed -i '/minifyEnabled true/a\ proguardFiles getDefaultProguardFile('\''proguard-android-optimize.txt'\''), '\''proguard-rules.pro'\''' example/android/app/build.gradle
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fi
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echo "📄 Build configuration with minification:"
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grep -A 5 "buildTypes" example/android/app/build.gradle
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# Build for single architecture to save memory
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cd example
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flutter build apk --release --target-platform android-arm64 --split-per-abi
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echo "✅ Build successful with minification ENABLED"
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- name: Test with minification DISABLED
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run: |
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echo "🧪 Testing with minifyEnabled = false"
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# Restore original
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cp example/android/app/build.gradle.backup example/android/app/build.gradle
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sed -i 's/minifyEnabled true/minifyEnabled false/' example/android/app/build.gradle
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sed -i 's/shrinkResources true/shrinkResources false/' example/android/app/build.gradle
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echo "📄 Build configuration without minification:"
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grep -A 5 "buildTypes" example/android/app/build.gradle
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# Clean and build
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cd example
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flutter clean
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flutter build apk --release --target-platform android-arm64 --split-per-abi
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echo "✅ Build successful with minification DISABLED"
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- name: Run unit tests
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run: flutter test
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- name: Verify APK artifacts
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run: |
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echo "📱 Checking APK files:"
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find example/build/app/outputs/apk/ -name "*.apk" -exec ls -la {} \;
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- name: Check for ProGuard artifacts
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run: |
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echo "🔍 Checking for ProGuard/R8 artifacts:"
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if [ -f "example/build/app/outputs/mapping/release/mapping.txt" ]; then
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echo "✅ ProGuard mapping file found"
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echo "📄 Mapping file size: $(wc -l < example/build/app/outputs/mapping/release/mapping.txt) lines"
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else
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echo "ℹ️ No mapping file found"
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fi
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- name: Report test results
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run: |
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echo "🎉 Minification compatibility test completed!"
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echo "✅ minifyEnabled = true: PASSED"
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echo "✅ minifyEnabled = false: PASSED"
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echo "✅ Memory optimizations applied successfully"
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- name: Cleanup
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if: always()
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run: |
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if [ -f "example/android/app/build.gradle.backup" ]; then
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mv example/android/app/build.gradle.backup example/android/app/build.gradle
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echo "✅ Restored original build.gradle"
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fi

‎android/build.gradle‎

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buildTypes {
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release {
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minifyEnabled true
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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minifyEnabled true
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt', 'proguard-rules.pro'
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}
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}
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‎android/proguard-rules.txt‎

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# Add any project specific keep options here:
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# Optimizely
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-keep class com.optimizely.optimizely_flutter_sdk.** {*;}
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-keep class com.fasterxml.jackson.** {*;}
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# Logback
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-keep class ch.qos.** { *; }
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-keep class com.optimizely.optimizely_flutter_sdk.** { *; }
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# Keep Jackson classes for JSON parsing
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-keep class com.fasterxml.jackson.** { *; }
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-dontwarn com.fasterxml.jackson.**
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##---------------End: proguard configuration ----------

‎example/android/app/build.gradle‎

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}
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dependencies {
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implementation 'com.android.support:multidex:1.0.3'
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implementation 'com.android.support:multidex:2.0.0'
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}

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