feat: ⚡ setup kotlin

android/build.gradle

@@ -1,9 +1,35 @@
 apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
+buildscript {
+    def kotlin_version = rootProject.ext.has('kotlinVersion') ? rootProject.ext.get('kotlinVersion') : project.properties['RNSAC_kotlinVersion']
+
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
+    }
+}
 
 def safeExtGet(prop, fallback) {
     rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
 }
 
+def getExtOrDefault(name, defaultValue) {
+    return rootProject.ext.has(name) ? rootProject.ext.get(name) : defaultValue
+}
+
+def isNewArchitectureEnabled() {
+    // To opt-in for the New Architecture, you can either:
+    // - Set `newArchEnabled` to true inside the `gradle.properties` file
+    // - Invoke gradle with `-newArchEnabled=true`
+    // - Set an environment variable `ORG_GRADLE_PROJECT_newArchEnabled=true`
+    return project.hasProperty("newArchEnabled") && project.newArchEnabled == "true"
+}
+
 def useExoplayerIMA = safeExtGet("RNVUseExoplayerIMA", false)
 
 println "useExoplayerIMA:" + useExoplayerIMA
@@ -16,6 +42,10 @@ def configStringPath = (
         'useExoplayerIMA' + useExoplayerIMA \
 ).md5()
 
+if (isNewArchitectureEnabled()) {
+    apply plugin: "com.facebook.react"
+}
+
 android {
     namespace 'com.brentvatne.react'
     compileSdkVersion safeExtGet('compileSdkVersion', 31)
@@ -31,6 +61,15 @@ android {
         targetSdkVersion safeExtGet('targetSdkVersion', 28)
         versionCode 1
         versionName "1.0"
+        buildConfigField "boolean", "IS_NEW_ARCHITECTURE_ENABLED", isNewArchitectureEnabled().toString()
+
+        ndk {
+            abiFilters(*reactNativeArchitectures())
+        }
+    }
+
+    packagingOptions {
+        exclude "**/libreact_render*.so"
     }
 
     compileOptions {
@@ -50,11 +89,38 @@ android {
             }
         }
     }
+
+    sourceSets.main {
+        java {
+            if (isNewArchitectureEnabled()) {
+                srcDirs += [
+                    "src/fabric/java",
+                    "${project.buildDir}/generated/source/codegen/java"
+                ]
+            } else {
+                srcDirs += [
+                    "src/oldarch/java"
+                ]
+            }
+        }
+    }
+}
+
+def reactNativeArchitectures() {
+    def value = project.getProperties().get("reactNativeArchitectures")
+    return value ? value.split(",") : ["armeabi-v7a", "x86", "x86_64", "arm64-v8a"]
 }
 
 repositories {
     google()
+    maven {
+        // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
+        url "$rootDir/../node_modules/react-native/android"
     }
+    mavenCentral()
+}
+
+def kotlin_version = getExtOrDefault('kotlinVersion', project.properties['RNSAC_kotlinVersion'])
 
 dependencies {
     implementation "com.facebook.react:react-native:${safeExtGet('reactNativeVersion', '+')}"
@@ -76,4 +142,5 @@ dependencies {
         implementation 'com.google.android.exoplayer:extension-ima:2.18.1'
     }
     implementation "com.squareup.okhttp3:okhttp:" + '$OKHTTP_VERSION'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 }

examples/LaftelVideo/android/build.gradle

@@ -3,7 +3,7 @@
 buildscript {
     ext {
         buildToolsVersion = "31.0.0"
-        kotlinVersion = "1.6.10"
+        kotlinVersion = "1.6.20"
         minSdkVersion = 21
         compileSdkVersion = 31
         targetSdkVersion = 31
@@ -20,6 +20,7 @@ buildscript {
         classpath("com.facebook.react:react-native-gradle-plugin")
         classpath("de.undercouch:gradle-download-task:5.0.1")
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
+        classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlinVersion"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }