feat!(android): migrate source code to kotlin

hooks/android/beforeCompile.js

@@ -0,0 +1,50 @@
+const { join } = require('path');
+const { existsSync, readFileSync, writeFileSync } = require('fs');
+const { parseElementtreeSync: ParseElementtreeSync } = require('cordova-common/src/util/xml-helpers');
+const platform = require('cordova-android');
+
+module.exports = function (context) {
+  if (!isExecutable()) {
+    console.log('[cordova-plugin-push::before-compile] skipping before_compile hookscript.');
+    return;
+  }
+
+  const buildGradleFilePath = join(context.opts.projectRoot, 'platforms/android/build.gradle');
+
+  if (!existsSync(buildGradleFilePath)) {
+    console.log('[cordova-plugin-push::before-compile] could not find "build.gradle" file.');
+    return;
+  }
+
+  updateBuildGradle(context, buildGradleFilePath);
+};
+
+/**
+ * This hookscript is executable only when the platform version less then 10.x
+ * @returns Boolean
+ */
+function isExecutable () {
+  const majorVersion = parseInt(platform.version(), 10);
+  return majorVersion < 10 && majorVersion >= 9;
+}
+
+function getPluginKotlinVersion (context) {
+  const pluginConfig = new ParseElementtreeSync(join(context.opts.projectRoot, 'plugins/@havesource/cordova-plugin-push/plugin.xml'));
+
+  return pluginConfig
+    .findall('./platform[@name="android"]').pop()
+    .findall('./config-file[@target="config.xml"]').pop()
+    .findall('preference').filter(
+      elem => elem.attrib.name.toLowerCase() === 'GradlePluginKotlinVersion'.toLowerCase()
+    ).pop().attrib.value;
+}
+
+function updateBuildGradle (context, buildGradleFilePath) {
+  const kotlinVersion = getPluginKotlinVersion(context);
+  const updateContent = readFileSync(buildGradleFilePath, 'utf8')
+    .replace(/ext.kotlin_version = ['"](.*)['"]/g, `ext.kotlin_version = '${kotlinVersion}'`);
+
+  writeFileSync(buildGradleFilePath, updateContent);
+
+  console.log(`[cordova-plugin-push::before-compile] updated "build.gradle" file with kotlin version set to: ${kotlinVersion}`);
+}

plugin.xml

@@ -19,6 +19,8 @@
   </engines>
 
   <platform name="android">
+    <hook type="before_compile" src="hooks/android/beforeCompile.js"/>
+
     <config-file target="res/xml/config.xml" parent="/*">
       <feature name="PushNotification">
         <param name="android-package" value="com.adobe.phonegap.push.PushPlugin"/>
@@ -61,6 +63,9 @@
       <preference name="AndroidXEnabled" value="true" />
       <preference name="GradlePluginGoogleServicesEnabled" value="true" />
       <preference name="GradlePluginGoogleServicesVersion" value="4.3.8" />
+
+      <preference name="GradlePluginKotlinEnabled" value="true" />
+      <preference name="GradlePluginKotlinVersion" value="1.5.20" />
     </config-file>
 
     <preference name="ANDROIDX_CORE_VERSION" default="1.6.+"/>
@@ -70,14 +75,14 @@
     <framework src="me.leolin:ShortcutBadger:1.1.22@aar"/>
     <framework src="com.google.firebase:firebase-messaging:$FCM_VERSION"/>
 
-    <source-file src="src/android/com/adobe/phonegap/push/FCMService.java" target-dir="src/com/adobe/phonegap/push/"/>
-    <source-file src="src/android/com/adobe/phonegap/push/PushConstants.java" target-dir="src/com/adobe/phonegap/push/"/>
-    <source-file src="src/android/com/adobe/phonegap/push/PushHandlerActivity.java" target-dir="src/com/adobe/phonegap/push/"/>
-    <source-file src="src/android/com/adobe/phonegap/push/BackgroundHandlerActivity.java" target-dir="src/com/adobe/phonegap/push/"/>
-    <source-file src="src/android/com/adobe/phonegap/push/PushInstanceIDListenerService.java" target-dir="src/com/adobe/phonegap/push/"/>
-    <source-file src="src/android/com/adobe/phonegap/push/PushPlugin.java" target-dir="src/com/adobe/phonegap/push/"/>
-    <source-file src="src/android/com/adobe/phonegap/push/BackgroundActionButtonHandler.java" target-dir="src/com/adobe/phonegap/push/"/>
-    <source-file src="src/android/com/adobe/phonegap/push/PushDismissedHandler.java" target-dir="src/com/adobe/phonegap/push/"/>
+    <source-file src="src/android/com/adobe/phonegap/push/FCMService.kt" target-dir="java/com/adobe/phonegap/push/"/>
+    <source-file src="src/android/com/adobe/phonegap/push/PushConstants.kt" target-dir="java/com/adobe/phonegap/push/"/>
+    <source-file src="src/android/com/adobe/phonegap/push/PushHandlerActivity.kt" target-dir="java/com/adobe/phonegap/push/"/>
+    <source-file src="src/android/com/adobe/phonegap/push/BackgroundHandlerActivity.kt" target-dir="java/com/adobe/phonegap/push/"/>
+    <source-file src="src/android/com/adobe/phonegap/push/PushInstanceIDListenerService.kt" target-dir="java/com/adobe/phonegap/push/"/>
+    <source-file src="src/android/com/adobe/phonegap/push/PushPlugin.kt" target-dir="java/com/adobe/phonegap/push/"/>
+    <source-file src="src/android/com/adobe/phonegap/push/BackgroundActionButtonHandler.kt" target-dir="java/com/adobe/phonegap/push/"/>
+    <source-file src="src/android/com/adobe/phonegap/push/PushDismissedHandler.kt" target-dir="java/com/adobe/phonegap/push/"/>
   </platform>
 
   <platform name="browser">

src/android/com/adobe/phonegap/push/BackgroundActionButtonHandler.kt

@@ -0,0 +1,54 @@
+package com.adobe.phonegap.push
+
+import android.annotation.SuppressLint
+import android.app.NotificationManager
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.util.Log
+import androidx.core.app.RemoteInput
+
+/**
+ * Background Action Button Handler
+ */
+@Suppress("HardCodedStringLiteral")
+@SuppressLint("LongLogTag", "LogConditional")
+class BackgroundActionButtonHandler : BroadcastReceiver() {
+  companion object {
+    private const val TAG: String = "${PushPlugin.PREFIX_TAG} (BackgroundActionButtonHandler)"
+  }
+
+  /**
+   * @param context
+   * @param intent
+   */
+  override fun onReceive(context: Context, intent: Intent) {
+    val notId = intent.getIntExtra(PushConstants.NOT_ID, 0)
+    Log.d(TAG, "Not ID: $notId")
+
+    val notificationManager =
+      context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+    notificationManager.cancel(FCMService.getAppName(context), notId)
+
+    intent.extras?.let { extras ->
+      Log.d(TAG, "Intent Extras: $extras")
+      extras.getBundle(PushConstants.PUSH_BUNDLE)?.apply {
+        putBoolean(PushConstants.FOREGROUND, false)
+        putBoolean(PushConstants.COLDSTART, false)
+        putString(
+          PushConstants.ACTION_CALLBACK,
+          extras.getString(PushConstants.CALLBACK)
+        )
+
+        RemoteInput.getResultsFromIntent(intent)?.let { remoteInputResults ->
+          val results = remoteInputResults.getCharSequence(PushConstants.INLINE_REPLY).toString()
+          Log.d(TAG, "Inline Reply: $results")
+
+          putString(PushConstants.INLINE_REPLY, results)
+        }
+      }
+
+      PushPlugin.sendExtras(extras)
+    }
+  }
+}