Easier signing process

android/app/build.gradle.kts

@@ -52,3 +52,69 @@ android {
 flutter {
     source = "../.."
 }
+plugins {
+    id("com.android.application")
+    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+    id("dev.flutter.flutter-gradle-plugin")
+}
+
+val keystoreProperties = java.util.Properties()
+val keystorePropertiesFile = rootProject.file("key.properties")
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(keystorePropertiesFile.inputStream())
+}
+
+fun envOrProp(name: String): String? =
+    System.getenv(name)?.takeIf { it.isNotEmpty() } ?: keystoreProperties[name] as? String
+
+android {
+    namespace = "com.knisium.classhub"
+    compileSdk = flutter.compileSdkVersion
+    ndkVersion = flutter.ndkVersion
+    buildToolsVersion = "36.0.0"
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_17.toString()
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId = "com.knisium.classhub"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://flutter.dev/to/review-gradle-config.
+        minSdk = flutter.minSdkVersion
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutter.versionCode
+        versionName = flutter.versionName
+    }
+
+    signingConfigs {
+        create("release") {
+            keyAlias      = envOrProp("KEY_ALIAS") ?: ""
+            keyPassword   = envOrProp("KEY_PASSWORD") ?: ""
+            storeFile     = envOrProp("KEYSTORE_PATH")?.let { file(it) }
+            storePassword = envOrProp("KEYSTORE_PASSWORD") ?: ""
+        }
+    }
+
+    buildTypes {
+        release {
+            if (envOrProp("KEYSTORE_PATH") != null) {
+                signingConfig = signingConfigs.getByName("release")
+            }
+        }
+    }
+}
+
+dependencies {
+    implementation("androidx.recyclerview:recyclerview:1.3.2")
+}
+
+flutter {
+    source = "../.."
+}