[js][ios][android][messaging] full implementation of upstream send including RemoteMessage builder

lib/modules/messaging/RemoteMessage.js

@@ -0,0 +1,80 @@
+import { isObject, generatePushID } from './../../utils';
+
+export default class RemoteMessage {
+  constructor(sender: String) {
+    this.properties = {
+      id: generatePushID(),
+      ttl: 3600,
+      // add the googleapis sender id part if not already added.
+      sender: sender.includes('@') ? sender : `${sender}@gcm.googleapis.com`,
+      type: 'remote',
+      data: {},
+    };
+  }
+
+  /**
+   *
+   * @param ttl
+   * @returns {RemoteMessage}
+   */
+  setTtl(ttl: Number): RemoteMessage {
+    this.properties.ttl = ttl;
+    return this;
+  }
+
+  /**
+   *
+   * @param id
+   */
+  setId(id: string): RemoteMessage {
+    this.properties.id = id;
+    return this;
+  }
+
+  /**
+   *
+   * @param type
+   * @returns {RemoteMessage}
+   */
+  setType(type: string): RemoteMessage {
+    this.properties.type = type;
+    return this;
+  }
+
+  /**
+   *
+   * @param key
+   * @returns {RemoteMessage}
+   */
+  setCollapseKey(key: string): RemoteMessage {
+    this.properties.collapseKey = key;
+    return this;
+  }
+
+
+  /**
+   *
+   * @param data
+   * @returns {RemoteMessage}
+   */
+  setData(data: Object = {}) {
+    if (!isObject(data)) {
+      throw new Error(`RemoteMessage:setData expects an object as the first parameter but got type '${typeof data}'.`);
+    }
+
+    const props = Object.keys(data);
+
+    // coerce all property values to strings as
+    // remote message data only supports strings
+    for (let i = 0, len = props.length; i < len; i++) {
+      const prop = props[i];
+      this.properties.data[prop] = `${data[prop]}`;
+    }
+
+    return this;
+  }
+
+  toJSON() {
+    return Object.assign({}, this.properties);
+  }
+}