feat: add keystore decoding and signing configuration for release builds

.github/workflows/flutter_release.yaml

@@ -41,6 +41,12 @@ jobs:
       # - name: Run tests
       #   run: flutter test
 
+      - name: Decode android/neumodore_key.jks
+        run: echo "${{ secrets.UPLOAD_KEYSTORE_JKS }}" | base64 --decode > android/upload.jks
+
+      - name: Decode android/key.properties
+        run: echo "${{ secrets.KEY_PROPERTIES }}" | base64 --decode > android/key.properties
+
       - name: Build APK
         run: flutter build apk --release
 

android/app/build.gradle

@@ -22,6 +22,12 @@ if (flutterVersionName == null) {
     flutterVersionName = '1.0'
 }
 
+def keystoreProperties = new Properties()
+def keystorePropertiesFile = rootProject.file('key.properties')
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+}
+
 android {
     namespace "dr.blank.vaani"
     compileSdk flutter.compileSdkVersion
@@ -51,11 +57,20 @@ android {
         versionName flutterVersionName
     }
 
+    signingConfigs {
+        release {
+            keyAlias = keystoreProperties['keyAlias']
+            keyPassword = keystoreProperties['keyPassword']
+            storeFile = keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
+            storePassword = keystoreProperties['storePassword']
+        }
+    }
+
     buildTypes {
         release {
-            // TODO: Add your own signing config for the release build.
             // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig signingConfigs.debug
+            // signingConfig signingConfigs.debug
+            signingConfig = signingConfigs.release
         }
     }
 }