initial

Author: Krzysztof Borowy

android/build.gradle

@@ -21,18 +21,30 @@ def safeExtGet(prop, fallback) {
     rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
 }
 
+def getFlagOrDefault(flagName, defaultValue) {
+    rootProject.hasProperty(flagName) ? rootProject.properties[flagName] == "true" : defaultValue
+}
+
 configurations {
     compileClasspath
 }
 
 buildscript {
-    if (project == rootProject) {
-        repositories {
-            google()
-            jcenter()
-        }
-        dependencies {
+    // kotlin version is dictated by rootProject extension or property in gradle.properties
+    ext.asyncStorageKtVersion = rootProject.ext.has('kotlinVersion')
+            ? rootProject.ext['kotlinVersion']
+            : rootProject.hasProperty('AsyncStorage_kotlinVersion')
+            ? rootProject.properties['AsyncStorage_kotlinVersion']
+            : '1.4.21'
+
+    repositories {
+        google()
+        jcenter()
+    }
+    dependencies {
+        if (project == rootProject) {
             classpath 'com.android.tools.build:gradle:3.6.4'
+            classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$asyncStorageKtVersion"
         }
     }
 }
@@ -42,27 +54,33 @@ buildscript {
 // This also protects the database from filling up the disk cache and becoming malformed.
 // If you really need bigger size, please keep in mind the potential consequences.
 long dbSizeInMB = 6L
-
 def newDbSize = rootProject.properties['AsyncStorage_db_size_in_MB']
-
 if( newDbSize != null && newDbSize.isLong()) {
     dbSizeInMB = newDbSize.toLong()
 }
 
-def useDedicatedExecutor = rootProject.hasProperty('AsyncStorage_dedicatedExecutor')
-        ? rootProject.properties['AsyncStorage_dedicatedExecutor']
-        : false
+// Instead of reusing AsyncTask thread pool, AsyncStorage can use its own executor
+def useDedicatedExecutor = getFlagOrDefault('AsyncStorage_dedicatedExecutor', false)
 
 apply plugin: 'com.android.library'
 
+// todo: decide the name
+def useRoomImplementation = getFlagOrDefault("AsyncStorage_useRoomLibrary", false)
+
+if(useRoomImplementation) {
+    apply plugin: 'kotlin-android'
+    apply plugin: 'kotlin-kapt'
+}
+
 android {
     compileSdkVersion safeExtGet('compileSdkVersion', 28)
     buildToolsVersion safeExtGet('buildToolsVersion', '28.0.3')
     defaultConfig {
         minSdkVersion safeExtGet('minSdkVersion', 19)
         targetSdkVersion safeExtGet('targetSdkVersion', 28)
         buildConfigField "Long", "AsyncStorage_db_size", "${dbSizeInMB}L"
-        buildConfigField("boolean", "AsyncStorage_useDedicatedExecutor", "${useDedicatedExecutor}")
+        buildConfigField "boolean", "AsyncStorage_useDedicatedExecutor", "${useDedicatedExecutor}"
+        buildConfigField "boolean", "AsyncStorage_useRoomLibrary", "${useRoomImplementation}"
     }
     lintOptions {
         abortOnError false

android/src/main/java/com/reactnativecommunity/asyncstorage/AsyncStoragePackage.java

@@ -12,15 +12,24 @@
 import com.facebook.react.bridge.NativeModule;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.uimanager.ViewManager;
-
-import java.util.Arrays;
+import com.reactnativecommunity.asyncstorage.next.StorageModule;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
 public class AsyncStoragePackage implements ReactPackage {
     @Override
     public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
-      return Arrays.<NativeModule>asList(new AsyncStorageModule(reactContext));
+
+        List<NativeModule> moduleList = new ArrayList<>(1);
+
+        if(BuildConfig.AsyncStorage_useRoomLibrary) {
+            moduleList.add(new StorageModule(reactContext));
+        } else {
+            moduleList.add(new AsyncStorageModule(reactContext));
+        }
+
+      return moduleList;
     }
 
     // Deprecated in RN 0.47 

android/src/main/java/com/reactnativecommunity/asyncstorage/next/StorageModule.kt

@@ -0,0 +1,8 @@
+package com.reactnativecommunity.asyncstorage.next
+
+import com.facebook.react.bridge.ReactContext
+import com.facebook.react.bridge.ReactContextBaseJavaModule
+
+class StorageModule(private val reactContext: ReactContext) : ReactContextBaseJavaModule() {
+    override fun getName() = "RNC_AsyncSQLiteDBStorage"
+}

example/android/build.gradle

@@ -26,13 +26,21 @@ task fetchDependencies() {
 }
 
 buildscript {
+    /**
+     * Todo:
+     *  In order to use this feature, the end user will have to also include
+     *  Kotlin plugin. Add this info to docs.
+     */
+    ext.kotlinVersion = '1.4.21'
+
     repositories {
         google()
         jcenter()
     }
     dependencies {
         // Needs to match `react-native-test-app/android/app/build.gradle`
         classpath "com.android.tools.build:gradle:4.0.2"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
     }
 }
 

example/android/gradle.properties

@@ -22,6 +22,7 @@
 
 # Enable dedicated thread pool executor
 AsyncStorage_dedicatedExecutor=true
+AsyncStorage_useRoomLibrary=true
 
 android.useAndroidX=true
 android.enableJetifier=true