refactor: code optimizations (#56)

Author: Shahroz16

android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

android/src/main/kotlin/io/customer/customer_io/CustomerIOPluginModule.kt

@@ -1,29 +1,39 @@
 package io.customer.customer_io
 
 import io.flutter.embedding.engine.plugins.FlutterPlugin
+import io.flutter.plugin.common.MethodChannel
 
 /**
  * Module class corresponds to modules concept in native SDKs. Any module added to native SDKs
  * should be treated as module in Flutter SDK and should be used to hold all relevant methods at
  * single place.
  */
-internal interface CustomerIOPluginModule {
+internal interface CustomerIOPluginModule : MethodChannel.MethodCallHandler {
     /**
      * Unique name of module to identify between other modules
      */
     val moduleName: String
 
+    /**
+     * Flutter communication channel to communicate with Native SDK
+     */
+    val flutterCommunicationChannel: MethodChannel
+
     /**
      * Called whenever root FlutterPlugin has been associated with a FlutterEngine instance.
      *
      * @see [FlutterPlugin.onAttachedToEngine] for more details
      */
-    fun onAttachedToEngine()
+    fun onAttachedToEngine() {
+        flutterCommunicationChannel.setMethodCallHandler(this)
+    }
 
     /**
      * Called whenever root FlutterPlugin has been removed from a FlutterEngine instance.
      *
      * @see [FlutterPlugin.onDetachedFromEngine] for more details
      */
-    fun onDetachedFromEngine()
+    fun onDetachedFromEngine() {
+        flutterCommunicationChannel.setMethodCallHandler(null)
+    }
 }

android/src/main/kotlin/io/customer/customer_io/messaginginapp/CustomerIOInAppMessaging.kt

@@ -17,17 +17,9 @@ internal class CustomerIOInAppMessaging(
     pluginBinding: FlutterPlugin.FlutterPluginBinding,
 ) : CustomerIOPluginModule, MethodChannel.MethodCallHandler {
     override val moduleName: String = "InAppMessaging"
-    private val flutterCommunicationChannel: MethodChannel =
+    override val flutterCommunicationChannel: MethodChannel =
         MethodChannel(pluginBinding.binaryMessenger, "customer_io_messaging_in_app")
 
-    override fun onAttachedToEngine() {
-        flutterCommunicationChannel.setMethodCallHandler(this)
-    }
-
-    override fun onDetachedFromEngine() {
-        flutterCommunicationChannel.setMethodCallHandler(null)
-    }
-
     override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
         when (call.method) {
             Keys.Methods.DISMISS_MESSAGE -> {

android/src/main/kotlin/io/customer/customer_io/messagingpush/CustomerIOPushMessaging.kt

@@ -23,19 +23,11 @@ internal class CustomerIOPushMessaging(
 ) : CustomerIOPluginModule, MethodChannel.MethodCallHandler {
     override val moduleName: String = "PushMessaging"
     private val applicationContext: Context = pluginBinding.applicationContext
-    private val flutterCommunicationChannel: MethodChannel =
+    override val flutterCommunicationChannel: MethodChannel =
         MethodChannel(pluginBinding.binaryMessenger, "customer_io_messaging_push")
     private val logger: Logger
         get() = CustomerIOShared.instance().diStaticGraph.logger
 
-    override fun onAttachedToEngine() {
-        flutterCommunicationChannel.setMethodCallHandler(this)
-    }
-
-    override fun onDetachedFromEngine() {
-        flutterCommunicationChannel.setMethodCallHandler(null)
-    }
-
     override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
         when (call.method) {
             Keys.Methods.ON_MESSAGE_RECEIVED -> {

example/lib/main.dart

@@ -6,16 +6,14 @@ import 'package:customer_io/customer_io_enums.dart';
 import 'package:customer_io/customer_io_inapp.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter_dotenv/flutter_dotenv.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
-  await dotenv.load(fileName: "credentials.env");
   await CustomerIO.initialize(
     config: CustomerIOConfig(
-        siteId: dotenv.get('siteId', fallback: 'YOUR_SITE_ID'),
-        apiKey: dotenv.get('apiKey', fallback: 'YOUR_API_KEY'),
+        siteId: "SITE_ID",
+        apiKey: "API_KEY",
         logLevel: CioLogLevel.debug,
         enableInApp: true,
         autoTrackDeviceAttributes: true,

example/pubspec.yaml

@@ -17,7 +17,6 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  flutter_dotenv: ^5.0.2
 
   customer_io:
     # When depending on this package from a real application you should use: