Add Graph API version option to BootBot constructor

README.md

@@ -189,6 +189,7 @@ Then use the provided HTTPS URL to config your webhook on Facebook's Dashboard.
 | `appSecret` | string | | `Y` |
 | `webhook` | string | `"/webhook"` | `N` |
 | `broadcastEchoes` | boolean | `false` | `N` |
+| `graphApiVersion` | string | `v2.12` | `N` |
 
 Creates a new `BootBot` instance. Instantiates the new express app and all required webhooks. `options` param must contain all tokens and app secret of your Facebook app. Optionally, set `broadcastEchoes` to `true` if you want the messages your bot send to be echoed back to it (you probably don't need this feature unless you have multiple bots running on the same Facebook page).
 

lib/BootBot.js

@@ -18,6 +18,7 @@ class BootBot extends EventEmitter {
    * @param {String} options.appSecret
    * @param {String} [options.webhook=/webhook]
    * @param {Boolean} [options.broadcastEchoes=false]
+   * @param {String} [options.graphApiVersion=v2.12]
    */
   constructor(options) {
     super();
@@ -28,6 +29,7 @@ class BootBot extends EventEmitter {
     this.verifyToken = options.verifyToken;
     this.appSecret = options.appSecret;
     this.broadcastEchoes = options.broadcastEchoes || false;
+    this.graphApiVersion = options.graphApiVersion || 'v2.12';
     this.app = express();
     this.webhook = options.webhook || '/webhook';
     this.webhook = this.webhook.charAt(0) !== '/' ? `/${this.webhook}` : this.webhook;
@@ -270,7 +272,7 @@ class BootBot extends EventEmitter {
   sendRequest(body, endpoint, method) {
     endpoint = endpoint || 'messages';
     method = method || 'POST';
-    return fetch(`https://graph.facebook.com/v2.12/me/${endpoint}?access_token=${this.accessToken}`, {
+    return fetch(`https://graph.facebook.com/${this.graphApiVersion}/me/${endpoint}?access_token=${this.accessToken}`, {
       method,
       headers: {
         'Content-Type': 'application/json'
@@ -334,7 +336,7 @@ class BootBot extends EventEmitter {
    * @returns {Promise}
    */
   getUserProfile(userId) {
-    const url = `https://graph.facebook.com/v2.12/${userId}?fields=first_name,last_name,profile_pic,locale,timezone,gender&access_token=${this.accessToken}`;
+    const url = `https://graph.facebook.com/${this.graphApiVersion}/${userId}?fields=first_name,last_name,profile_pic,locale,timezone,gender&access_token=${this.accessToken}`;
     return fetch(url)
       .then(res => res.json())
       .catch(err => console.log(`Error getting user profile: ${err}`));