Move to Flutter 3.47, use the improvements that come with this (#64)

Reviewed-on: #64

android/app/build.gradle

@@ -1,77 +0,0 @@
-plugins {
-    id "com.android.application"
-    id "kotlin-android"
-    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
-    id "dev.flutter.flutter-gradle-plugin"
-}
-
-def localProperties = new Properties()
-def localPropertiesFile = rootProject.file("local.properties")
-if (localPropertiesFile.exists()) {
-    localPropertiesFile.withReader("UTF-8") { reader ->
-        localProperties.load(reader)
-    }
-}
-
-def flutterVersionCode = localProperties.getProperty("flutter.versionCode")
-if (flutterVersionCode == null) {
-    flutterVersionCode = "1"
-}
-
-def flutterVersionName = localProperties.getProperty("flutter.versionName")
-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 = "nexus.federated.nexus"
-    ndkVersion = flutter.ndkVersion
-    compileSdk = 34
-
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_17
-    }
-
-    kotlinOptions {
-        jvmTarget = "17"
-    }
-
-    defaultConfig {
-        applicationId = "nexus.federated.nexus"
-        minSdk = 29
-        targetSdkVersion flutter.targetSdkVersion
-        versionCode = flutterVersionCode.toInteger()
-        versionName = flutterVersionName
-    }
-
-	signingConfigs {
-		release {
-			keyAlias "key"
-			def storePath = keystoreProperties['path'] ?: System.getenv("KEYSTORE_PATH")
-			storeFile storePath ? file(storePath) : null
-			keyPassword keystoreProperties['password'] ?: System.getenv("KEYSTORE_PASSWORD")
-			storePassword keystoreProperties['password'] ?: System.getenv("KEYSTORE_PASSWORD")
-		}
-    }
-
-    buildTypes {
-        release {
-		   signingConfig signingConfigs.release
-        }
-
-		debug {
-			applicationIdSuffix = ".debug"
-	   	}
-    }
-}
-
-flutter {
-    source = "../.."
-}

android/app/build.gradle.kts

@@ -0,0 +1,74 @@
+import java.util.Properties
+
+plugins {
+    id("com.android.application")
+    id("dev.flutter.flutter-gradle-plugin")
+}
+
+val keystoreProperties = Properties()
+val keystorePropertiesFile = rootProject.file("key.properties")
+
+if (keystorePropertiesFile.exists()) {
+    keystorePropertiesFile.inputStream().use {
+        keystoreProperties.load(it)
+    }
+}
+
+android {
+    namespace = "nexus.federated.nexus"
+    compileSdk = 36
+    ndkVersion = flutter.ndkVersion
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    defaultConfig {
+        applicationId = "nexus.federated.nexus"
+        minSdk = 29
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutter.versionCode
+        versionName = flutter.versionName
+    }
+
+    signingConfigs {
+        create("release") {
+            keyAlias = "key"
+
+            val storePath =
+                keystoreProperties["path"]?.toString()
+                    ?: System.getenv("KEYSTORE_PATH")
+
+            storeFile = storePath?.let { file(it) }
+
+            keyPassword =
+                keystoreProperties["password"]?.toString()
+                    ?: System.getenv("KEYSTORE_PASSWORD")
+
+            storePassword =
+                keystoreProperties["password"]?.toString()
+                    ?: System.getenv("KEYSTORE_PASSWORD")
+        }
+    }
+
+    buildTypes {
+        release {
+            signingConfig = signingConfigs.getByName("release")
+        }
+
+        debug {
+            applicationIdSuffix = ".debug"
+        }
+    }
+}
+
+kotlin {
+    compilerOptions {
+        jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17
+    }
+}
+
+flutter {
+    source = "../.."
+}