chore: migrate build script to kts

android/app/build.gradle

@@ -1,91 +0,0 @@
-def localProperties = new Properties()
-def localPropertiesFile = rootProject.file('local.properties')
-if (localPropertiesFile.exists()) {
-    localPropertiesFile.withReader('UTF-8') { reader ->
-        localProperties.load(reader)
-    }
-}
-
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
-def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
-if (flutterVersionCode == null) {
-    flutterVersionCode = '1'
-}
-
-def flutterVersionName = localProperties.getProperty('flutter.versionName')
-if (flutterVersionName == null) {
-    flutterVersionName = '1.0'
-}
-
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
-android {
-    namespace "com.lifegpc.ehf"
-    compileSdkVersion 34
-    ndkVersion flutter.ndkVersion
-
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-
-    kotlinOptions {
-        jvmTarget = '1.8'
-    }
-
-    sourceSets {
-        main.java.srcDirs += 'src/main/kotlin'
-    }
-
-    defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "com.lifegpc.ehf"
-        // You can update the following values to match your application needs.
-        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
-        minSdkVersion 23
-        targetSdkVersion 33
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
-    }
-
-    signingConfigs {
-        release {
-            def keystoreFile = file("keystore.jks")
-            def keyAliasEnv = System.getenv("SIGNING_KEY_ALIAS")
-            def keystorePasswordEnv = System.getenv("SIGNING_STORE_PASSWORD")
-            def keyPasswordEnv = System.getenv("SIGNING_STORE_PASSWORD")
-
-            storeFile keystoreFile
-            storePassword keystorePasswordEnv
-            keyAlias keyAliasEnv
-            keyPassword keyPasswordEnv
-        }
-    }
-
-    buildTypes {
-        release {
-            if (System.getenv("CI") == "true") {
-                signingConfig signingConfigs.release
-            } else {
-                signingConfig signingConfigs.debug
-            }
-        }
-    }
-}
-
-flutter {
-    source '../..'
-}
-
-dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'com.github.DylanCaiCoding:MMKV-KTX:1.2.16'
-    implementation 'androidx.documentfile:documentfile:1.0.1'
-    implementation "org.greenrobot:eventbus:3.3.1"
-}

android/app/build.gradle.kts

@@ -0,0 +1,72 @@
+plugins {
+    id("com.android.application")
+    id("org.jetbrains.kotlin.android")
+    id("dev.flutter.flutter-gradle-plugin")
+}
+
+android {
+    namespace = "com.lifegpc.ehf"
+    compileSdk = 34
+    ndkVersion = flutter.ndkVersion
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+
+
+    sourceSets {
+        getByName("main") {
+            java {
+                srcDirs("src/main/kotlin")
+            }
+        }
+    }
+
+    defaultConfig {
+        applicationId = "com.lifegpc.ehf"
+        minSdk = 23
+        targetSdk = 34
+        versionCode = flutter.versionCode()
+        versionName = flutter.versionName()
+    }
+
+    signingConfigs {
+        maybeCreate("release").apply {
+            val keystoreFile = File("keystore.jks").also { if (!it.exists()) return@apply }
+            val keyAliasEnv = System.getenv("SIGNING_KEY_ALIAS") ?: return@apply
+            val keystorePasswordEnv = System.getenv("SIGNING_STORE_PASSWORD") ?: return@apply
+            val keyPasswordEnv = System.getenv("SIGNING_STORE_PASSWORD") ?: return@apply
+
+            storeFile = keystoreFile
+            storePassword = keystorePasswordEnv
+            keyAlias = keyAliasEnv
+            keyPassword = keyPasswordEnv
+        }
+    }
+
+    buildTypes {
+        release {
+            signingConfig = if (System.getenv("CI") == "true") {
+                signingConfigs["release"]
+            } else {
+                signingConfigs["debug"]
+            }
+        }
+    }
+}
+
+flutter {
+    source = "../.."
+}
+
+dependencies {
+//    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10")
+    implementation("com.github.DylanCaiCoding:MMKV-KTX:1.2.16")
+    implementation("androidx.documentfile:documentfile:1.0.1")
+    implementation("org.greenrobot:eventbus:3.3.1")
+}