name: Build Android Production APK

on:
  push:
    branches: [ main ]  # Trigger on push to main branch
  workflow_dispatch:  # Allow manual trigger

permissions:
  contents: write  # Required for creating releases

jobs:
  build:
    name: Build Production APK
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      
      - name: Setup Java
        uses: actions/setup-java@v4
        with:
          distribution: 'temurin'
          java-version: '17'
      
      - name: Generate Production version number
        run: |
          # Generate semantic version: YYYY.MM.DD
          VERSION_NAME="$(date +'%Y.%m.%d')"
          
          # Use GitHub run number as build number for production
          BUILD_NUMBER="${{ github.run_number }}"
          
          echo "VERSION_NAME=$VERSION_NAME" >> $GITHUB_ENV
          echo "BUILD_NUMBER=$BUILD_NUMBER" >> $GITHUB_ENV
          echo "VERSION_TAG=v$VERSION_NAME-prod.$BUILD_NUMBER" >> $GITHUB_ENV
          
          echo "🚀 Generated PRODUCTION version: $VERSION_NAME+$BUILD_NUMBER"
      
      - name: Update build.gradle.kts with Production version
        run: |
          # Update versionCode and versionName in build.gradle.kts
          sed -i "s/versionCode = [0-9]*/versionCode = ${{ env.BUILD_NUMBER }}/" android/app/build.gradle.kts
          sed -i "s/versionName = \".*\"/versionName = \"${{ env.VERSION_NAME }}\"/" android/app/build.gradle.kts
          
          echo "✅ Updated build.gradle.kts:"
          grep -E "versionCode|versionName" android/app/build.gradle.kts
      
      - name: Setup Android signing
        run: |
          echo "${{ secrets.KEYSTORE_BASE64 }}" | base64 -d > android/app/simple-notes-release.jks
          echo "storePassword=${{ secrets.KEYSTORE_PASSWORD }}" > android/key.properties
          echo "keyPassword=${{ secrets.KEY_PASSWORD }}" >> android/key.properties
          echo "keyAlias=${{ secrets.KEY_ALIAS }}" >> android/key.properties
          echo "storeFile=simple-notes-release.jks" >> android/key.properties
          echo "✅ Signing configuration created"
      
      - name: Build Production APK (Release)
        run: |
          cd android
          ./gradlew assembleRelease --no-daemon --stacktrace
      
      - name: Copy APK variants to root with version names
        run: |
          mkdir -p apk-output
          
          # Universal APK
          cp android/app/build/outputs/apk/release/app-universal-release.apk \
             apk-output/simple-notes-sync-v${{ env.VERSION_NAME }}-universal.apk
          
          # ARM64 APK
          cp android/app/build/outputs/apk/release/app-arm64-v8a-release.apk \
             apk-output/simple-notes-sync-v${{ env.VERSION_NAME }}-arm64-v8a.apk
          
          # ARMv7 APK
          cp android/app/build/outputs/apk/release/app-armeabi-v7a-release.apk \
             apk-output/simple-notes-sync-v${{ env.VERSION_NAME }}-armeabi-v7a.apk
          
          echo "✅ APK files prepared:"
          ls -lh apk-output/
      
      - name: Upload APK artifacts
        uses: actions/upload-artifact@v4
        with:
          name: simple-notes-sync-apks-v${{ env.VERSION_NAME }}
          path: apk-output/*.apk
          retention-days: 90  # Keep production builds longer
      
      - name: Get commit info
        run: |
          echo "SHORT_SHA=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
          echo "COMMIT_DATE=$(git log -1 --format=%cd --date=iso-strict)" >> $GITHUB_ENV
          
          # Get full commit message preserving newlines and emojis (UTF-8)
          {
            echo 'COMMIT_MSG<<EOF'
            git -c core.quotepath=false log -1 --pretty=%B
            echo 'EOF'
          } >> $GITHUB_ENV
      
      - name: Create Production Release
        uses: softprops/action-gh-release@v1
        with:
          tag_name: ${{ env.VERSION_TAG }}
          name: "📝 Simple Notes Sync v${{ env.VERSION_NAME }} (Production)"
          files: apk-output/*.apk
          draft: false
          prerelease: false
          generate_release_notes: false
          body: |
            # 📝 Production Release: Simple Notes Sync v${{ env.VERSION_NAME }}
            
            ## Build Information
            
            - **Version:** ${{ env.VERSION_NAME }}+${{ env.BUILD_NUMBER }}
            - **Build Date:** ${{ env.COMMIT_DATE }}
            - **Commit:** ${{ env.SHORT_SHA }}
            - **Environment:** 🟢 **PRODUCTION**
            
            ---
            
            ## 📋 Changes
            
            ${{ env.COMMIT_MSG }}
            
            ---
            
            ## 📦 Download & Installation
            
            ### Which APK should I download?
            
            | Your Device | Download This APK | Size | Compatibility |
            |-------------|------------------|------|---------------|
            | 🤷 Not sure? | `simple-notes-sync-v${{ env.VERSION_NAME }}-universal.apk` | ~5 MB | Works on all devices |
            | Modern (2018+) | `simple-notes-sync-v${{ env.VERSION_NAME }}-arm64-v8a.apk` | ~3 MB | Faster, smaller |
            | Older devices | `simple-notes-sync-v${{ env.VERSION_NAME }}-armeabi-v7a.apk` | ~3 MB | Older ARM chips |
            
            ### Installation Steps
            1. Download the appropriate APK from the assets below
            2. Enable "Install from unknown sources" in Android settings
            3. Open the downloaded APK file
            4. Follow the installation prompts
            5. Configure WebDAV settings in the app
            
            ---
            
            ## ⚙️ Features
            
            - ✅ Automatic WebDAV sync every 30 minutes (~0.4% battery/day)
            - ✅ Smart gateway detection (home network auto-detection)
            - ✅ Material Design 3 UI
            - ✅ Privacy-focused (no tracking, no analytics)
            - ✅ Offline-first architecture
            
            ---
            
            ## 🔄 Updating from Previous Version
            
            Simply install this APK over the existing installation - all data and settings will be preserved.
            
            ---
            
            ## 📱 Obtanium - Auto-Update App
            
            Get automatic updates with [Obtanium](https://github.com/ImranR98/Obtanium/releases/latest).
            
            **Setup:**
            1. Install Obtanium from the link above
            2. Add app with this URL: `https://github.com/dettmersLiq/simple-notes-sync`
            3. Enable auto-updates
            
            ---
            
            ## 🆘 Support
            
            For issues or questions, please open an issue on GitHub.
            
            ---
            
            ## 🔒 Privacy & Security
            
            - All data synced via your own WebDAV server
            - No third-party analytics or tracking
            - No internet permissions except for WebDAV sync
            - All sync operations encrypted (HTTPS)
            - Open source - audit the code yourself
            
            ---
            
            ## 🛠️ Built With
            
            - **Language:** Kotlin
            - **UI:** Material Design 3
            - **Sync:** WorkManager + WebDAV
            - **Target SDK:** Android 16 (API 36)
            - **Min SDK:** Android 8.0 (API 26)
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}