feat(firebase-messaging): add firebase-messaging (#2518)

* feat(firebase-messaging): add firebase-messaging

* refactor

src/@ionic-native/plugins/firebase-messaging/index.ts

@@ -0,0 +1,136 @@
+import { Injectable } from '@angular/core';
+import { Cordova, IonicNativePlugin, Plugin } from '@ionic-native/core';
+import { Observable } from 'rxjs/Observable';
+
+export interface IFirebaseMessage {
+  aps: any;
+  gcm: any;
+}
+
+/**
+ * @beta
+ * @name Firebase Messaging
+ * @description
+ * Cordova plugin for Firebase Messaging
+ *
+ * @usage
+ * ```typescript
+ * import { FirebaseMessaging } from '@ionic-native/firebase-messaging';
+ *
+ *
+ * constructor(private firebaseMessaging: FirebaseMessaging) { }
+ *
+ * ...
+ *
+ *
+ * this.firebaseMessaging.logEvent('page_view', {page: "dashboard"})
+ *   .then((res: any) => console.log(res))
+ *   .catch((error: any) => console.error(error));
+ *
+ * ```
+ * @interfaces
+ * IFirebaseMessage
+ */
+@Plugin({
+  pluginName: 'FirebaseMessaging',
+  plugin: 'cordova-plugin-firebase-messaging',
+  pluginRef: 'cordova.plugins.firebase.messaging',
+  repo: 'https://github.com/chemerisuk/cordova-plugin-firebase-messaging',
+  platforms: ['Android', 'iOS']
+})
+@Injectable()
+export class FirebaseMessaging extends IonicNativePlugin {
+  /**
+   * Called when a push message received while app is in foreground.
+   *
+   * @returns {Observable<any>}
+   */
+  @Cordova({ observable: true, callbackOrder: 'reverse' })
+  onMessage(): Observable<any> {
+    return;
+  }
+
+  /**
+   * Called when a push message received while app is in background.
+   *
+   * @returns {Observable<any>}
+   */
+  @Cordova({ observable: true, callbackOrder: 'reverse' })
+  onBackgroundMessage(): Observable<any> {
+    return;
+  }
+
+  /**
+   * Grant permission to recieve push notifications (will trigger prompt on iOS).
+   *
+   * @returns {Promise<string>}
+   */
+  @Cordova({ sync: true })
+  requestPermission(): Promise<string> {
+    return;
+  }
+
+  /**
+   * Returns a promise that fulfills with the current FCM token
+   *
+   * @returns {Promise<string>}
+   */
+  @Cordova({ sync: true })
+  getToken(): Promise<string> {
+    return;
+  }
+
+  /**
+   * Triggers every time when FCM token updated.
+   * You should usually call getToken to get an updated token and send it to server.
+   *
+   * @returns {Observable<void>}
+   */
+  @Cordova({ observable: true, callbackOrder: 'reverse' })
+  onTokenRefresh(): Observable<void> {
+    return;
+  }
+
+  /**
+   * Subscribe to topic in background.
+   *
+   * @param {string} topic
+   * @returns {Promise<null>}
+   */
+  @Cordova({ sync: true })
+  subscribe(topic: string): Promise<null> {
+    return;
+  }
+
+  /**
+   * Unsubscribe from topic in background.
+   *
+   * @param {string} topic
+   * @returns {Promise<null>}
+   */
+  @Cordova({ sync: true })
+  unsubscribe(topic: string): Promise<null> {
+    return;
+  }
+
+  /**
+   * Reads current badge number (if supported).
+   *
+   * @returns {Promise<number>}
+   */
+  @Cordova({ sync: true })
+  getBadge(): Promise<number> {
+    return;
+  }
+
+  /**
+   * Sets current badge number (if supported).
+   *
+   * @param {number} value
+   * @returns {Promise<null>}
+   */
+  @Cordova({ sync: true })
+  setBadge(value: number): Promise<null> {
+    return;
+  }
+}