Changing build to use signing keys and store the artifact

Author: ImmaCodePrivate

.github/workflows/main.yml

@@ -35,6 +35,24 @@ jobs:
           distribution: 'temurin'
           java-version: '17'
       - uses: subosito/flutter-action@v2
+      # Prepare Keystore (decode and save it)
+      - name: Decode Keystore
+        run: |
+          echo "${{ secrets.ANDROID_KEYSTORE_BASE64 }}" | base64 -d > ./android/app/key.jks
+
+      # Set up key.properties file
+      - name: Set up key.properties file
+        run: |
+          echo "storePassword=${{ secrets.ANDROID_KEYSTORE_PASSWORD }}" > $GITHUB_WORKSPACE/android/key.properties
+          echo "keyPassword=${{ secrets.ANDROID_KEY_PASSWORD }}" >> $GITHUB_WORKSPACE/android/key.properties
+          echo "keyAlias=${{ secrets.ANDROID_KEY_ALIAS }}" >> $GITHUB_WORKSPACE/android/key.properties
+          echo "storeFile=key.jks" >> $GITHUB_WORKSPACE/android/key.properties
+
       - run: flutter pub get
       - run: flutter clean
-      - run: flutter build appbundle --debug
+      - run: flutter build appbundle
+      - name: Archive android app file.
+        uses: actions/upload-artifact@v4
+        with:
+          name: openshock.aab
+          path: build/app/outputs/bundle/release/app-release.aab