From 0df9db09aabbc99f96b914d5df201a79303dc3df Mon Sep 17 00:00:00 2001
From: Akram Lazkanee <MhdAkram.Lazkani@syriatel.com.sy>
Date: Mon, 30 Dec 2019 20:10:34 +0200
Subject: [PATCH 1/4] Multi-Pages support added

---
 lib/BootBot.js       | 249 +++++++++++++++++++++++++------------------
 lib/Chat.js          | 118 ++++++++++----------
 lib/Conversation.js  |  31 +++---
 package-lock.json    | 140 ++++++++++++------------
 test/BootBot.spec.js |  15 +--
 5 files changed, 297 insertions(+), 256 deletions(-)

diff --git a/lib/BootBot.js b/lib/BootBot.js
index 5df40f8..acf1c86 100644
--- a/lib/BootBot.js
+++ b/lib/BootBot.js
@@ -18,7 +18,6 @@ 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();
@@ -29,11 +28,10 @@ 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;
-    this.app.use(this.webhook, bodyParser.json({ verify: this._verifyRequestSignature.bind(this) }));
+    this.app.use(bodyParser.json({verify: this._verifyRequestSignature.bind(this)}));
     this._hearMap = [];
     this._conversations = [];
   }
@@ -84,14 +82,15 @@ class BootBot extends EventEmitter {
    * @param {String} text
    * @param {Array.<QuickReply|String>} quickReplies Array of strings or quick_reply objects
    * @param {SendMessageOptions} [options]
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendTextMessage(recipientId, text, quickReplies, options) {
-    const message = { text };
+  sendTextMessage(recipientId, text, quickReplies, options, pageId) {
+    const message = {text};
     const formattedQuickReplies = this._formatQuickReplies(quickReplies);
     if (formattedQuickReplies && formattedQuickReplies.length > 0) {
       message.quick_replies = formattedQuickReplies;
     }
-    return this.sendMessage(recipientId, message, options);
+    return this.sendMessage(recipientId, message, options, pageId);
   }
 
   /**
@@ -105,15 +104,16 @@ class BootBot extends EventEmitter {
    * @param {String} text Message to be sent.
    * @param {Array.<String|Button>} buttons
    * @param {SendMessageOptions} [options]
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendButtonTemplate(recipientId, text, buttons, options) {
+  sendButtonTemplate(recipientId, text, buttons, options, pageId) {
     const payload = {
       template_type: 'button',
       text
     };
     const formattedButtons = this._formatButtons(buttons);
     payload.buttons = formattedButtons;
-    return this.sendTemplate(recipientId, payload, options);
+    return this.sendTemplate(recipientId, payload, options, pageId);
   }
 
   /**
@@ -129,14 +129,15 @@ class BootBot extends EventEmitter {
    * @param {Recipient|String} recipientId
    * @param {Array.<Element>} elements
    * @param {SendMessageOptions} [options]
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendGenericTemplate(recipientId, elements, options) {
+  sendGenericTemplate(recipientId, elements, options, pageId) {
     const payload = {
       template_type: 'generic',
       elements
     };
     options && options.imageAspectRatio && (payload.image_aspect_ratio = options.imageAspectRatio) && (delete options.imageAspectRatio);
-    return this.sendTemplate(recipientId, payload, options);
+    return this.sendTemplate(recipientId, payload, options, pageId);
   }
 
   /**
@@ -145,15 +146,16 @@ class BootBot extends EventEmitter {
    * @param {Array.<String|Button>} buttons An array with one element: string or button object.
    * @param {SendMessageOptions} [options]
    * @param {String} [options.topElementStyle]
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendListTemplate(recipientId, elements, buttons, options) {
+  sendListTemplate(recipientId, elements, buttons, options, pageId) {
     const payload = {
       template_type: 'list',
       elements
     };
     options && options.topElementStyle && (payload.top_element_style = options.topElementStyle) && (delete options.topElementStyle);
     buttons && buttons.length && (payload.buttons = this._formatButtons([buttons[0]]));
-    return this.sendTemplate(recipientId, payload, options);
+    return this.sendTemplate(recipientId, payload, options, pageId);
   }
 
   /**
@@ -161,15 +163,16 @@ class BootBot extends EventEmitter {
    * @param {Recipient|String} recipientId
    * @param {Object} payload The template payload.
    * @param {SendMessageOptions} [options]
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendTemplate(recipientId, payload, options) {
+  sendTemplate(recipientId, payload, options, pageId) {
     const message = {
       attachment: {
         type: 'template',
         payload
       }
     };
-    return this.sendMessage(recipientId, message, options);
+    return this.sendMessage(recipientId, message, options, pageId);
   }
 
   /**
@@ -178,19 +181,20 @@ class BootBot extends EventEmitter {
    * @param {String} url URL of the attachment.
    * @param {Array.<QuickReply>} quickReplies
    * @param {SendMessageOptions} options
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendAttachment(recipientId, type, url, quickReplies, options) {
+  sendAttachment(recipientId, type, url, quickReplies, options, pageId) {
     const message = {
       attachment: {
         type,
-        payload: { url }
+        payload: {url}
       }
     };
     const formattedQuickReplies = this._formatQuickReplies(quickReplies);
     if (formattedQuickReplies && formattedQuickReplies.length > 0) {
       message.quick_replies = formattedQuickReplies;
     }
-    return this.sendMessage(recipientId, message, options);
+    return this.sendMessage(recipientId, message, options, pageId);
   }
 
   /**
@@ -199,13 +203,14 @@ class BootBot extends EventEmitter {
    * @param {Recipient|String} recipientId Recipient object or ID.
    * @param {String} action One of 'mark_seen', 'typing_on' or 'typing_off'
    * @param {SendMessageOptions} [options] NOT USED.
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendAction(recipientId, action, options) {
+  sendAction(recipientId, action, options, pageId) {
     const recipient = this._createRecipient(recipientId);
     return this.sendRequest({
       recipient,
       sender_action: action
-    });
+    }, null, null, pageId);
   }
 
   /**
@@ -222,8 +227,9 @@ class BootBot extends EventEmitter {
    * @param {Recipient|String} recipientId Recipient object or ID.
    * @param {Message} message The message to send.
    * @param {SendMessageOptions} [options]
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendMessage(recipientId, message, options) {
+  sendMessage(recipientId, message, options, pageId) {
     const recipient = this._createRecipient(recipientId);
     const messagingType = options && options.messagingType;
     const notificationType = options && options.notificationType;
@@ -245,20 +251,20 @@ class BootBot extends EventEmitter {
       reqBody.tag = tag
     }
     const req = () => (
-      this.sendRequest(reqBody).then((json) => {
-        if (typeof onDelivery === 'function') {
-          this.once('delivery', onDelivery);
-        }
-        if (typeof onRead === 'function') {
-          this.once('read', onRead);
-        }
-        return json;
-      })
+        this.sendRequest(reqBody, null, null, pageId).then((json) => {
+          if (typeof onDelivery === 'function') {
+            this.once('delivery', onDelivery);
+          }
+          if (typeof onRead === 'function') {
+            this.once('read', onRead);
+          }
+          return json;
+        })
     );
     if (options && options.typing) {
       const autoTimeout = (message && message.text) ? message.text.length * 10 : 1000;
       const timeout = (typeof options.typing === 'number') ? options.typing : autoTimeout;
-      return this.sendTypingIndicator(recipientId, timeout).then(req);
+      return this.sendTypingIndicator(recipientId, timeout, pageId).then(req);
     }
     return req();
   }
@@ -267,27 +273,28 @@ class BootBot extends EventEmitter {
    * @param {Object} body The request body object.
    * @param {String} endpoint Messenger API endpoint
    * @param {String} method HTTP method.
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    * @returns {Promise}
    */
-  sendRequest(body, endpoint, method) {
+  sendRequest(body, endpoint, method, pageId) {
     endpoint = endpoint || 'messages';
     method = method || 'POST';
-    return fetch(`https://graph.facebook.com/${this.graphApiVersion}/me/${endpoint}?access_token=${this.accessToken}`, {
+    return fetch(`https://graph.facebook.com/v2.12/me/${endpoint}?access_token=${this._getAccessToken(pageId)}`, {
       method,
       headers: {
         'Content-Type': 'application/json'
       },
       body: JSON.stringify(body)
     })
-    .then(res => res.json())
-    .then(res => {
-      if (res.error) {
-        console.log('Messenger Error received. For more information about error codes, see: https://goo.gl/d76uvB');
-        console.log(res.error);
-      }
-      return res;
-    })
-    .catch(err => console.log(`Error sending message: ${err}`));
+        .then(res => res.json())
+        .then(res => {
+          if (res.error) {
+            console.log('Messenger Error received. For more information about error codes, see: https://goo.gl/d76uvB');
+            console.log(res.error);
+          }
+          return res;
+        })
+        .catch(err => console.log(`Error sending message: ${err}`));
   }
 
   /**
@@ -295,37 +302,40 @@ class BootBot extends EventEmitter {
    * Please update your code to use the sendProfileRequest() method instead.
    * @param {Object} body
    * @param {String} method
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendThreadRequest(body, method) {
+  sendThreadRequest(body, method, pageId) {
     console.warning(`
       sendThreadRequest: Dreprecation warning. Thread API has been replaced by the Messenger Profile API.
       Please update your code to use the sendProfileRequest() method instead.`
     );
-    return this.sendRequest(body, 'thread_settings', method);
+    return this.sendRequest(body, 'thread_settings', method, pageId);
   }
 
   /**
    * @param {Object} body The request body.
    * @param {String} method HTTP method.
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendProfileRequest(body, method) {
-    return this.sendRequest(body, 'messenger_profile', method);
+  sendProfileRequest(body, method, pageId) {
+    return this.sendRequest(body, 'messenger_profile', method, pageId);
   }
 
   /**
    * Convinient method to send a typing_on action and then a typing_off action after milliseconds to simulate the bot is actually typing. Max value is 20000 (20 seconds).
    * @param {Recipient|String} recipientId
    * @param {Number} milliseconds
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  sendTypingIndicator(recipientId, milliseconds) {
+  sendTypingIndicator(recipientId, milliseconds, pageId) {
     const timeout = isNaN(milliseconds) ? 0 : milliseconds;
     if (milliseconds > 20000) {
       milliseconds = 20000;
       console.error('sendTypingIndicator: max milliseconds value is 20000 (20 seconds)');
     }
     return new Promise((resolve, reject) => {
-      return this.sendAction(recipientId, 'typing_on').then(() => {
-        setTimeout(() => this.sendAction(recipientId, 'typing_off').then((json) => resolve(json)), timeout);
+      return this.sendAction(recipientId, 'typing_on', null, pageId).then(() => {
+        setTimeout(() => this.sendAction(recipientId, 'typing_off', null, pageId).then((json) => resolve(json)), timeout);
       });
     });
   }
@@ -333,34 +343,37 @@ class BootBot extends EventEmitter {
   /**
    * Returns a Promise that contains the user's profile information.
    * @param {String} userId
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    * @returns {Promise}
    */
-  getUserProfile(userId) {
-    const url = `https://graph.facebook.com/${this.graphApiVersion}/${userId}?fields=first_name,last_name,profile_pic,locale,timezone,gender&access_token=${this.accessToken}`;
+  getUserProfile(userId, pageId) {
+    const url = `https://graph.facebook.com/v2.12/${userId}?fields=first_name,last_name,profile_pic,locale,timezone,gender&access_token=${this._getAccessToken(pageId)}`;
     return fetch(url)
-      .then(res => res.json())
-      .catch(err => console.log(`Error getting user profile: ${err}`));
+        .then(res => res.json())
+        .catch(err => console.log(`Error getting user profile: ${err}`));
   }
 
   /**
    * Set a greeting text for new conversations. The Greeting Text is only rendered the first time the user interacts with a the Page on Messenger.
    * Facebook docs: https://developers.facebook.com/docs/messenger-platform/reference/messenger-profile-api/greeting
    * @param {String|Array.<Object>} text Greeting text, or an array of objects to support multiple locales. For more info on the format of these objects, see: https://developers.facebook.com/docs/messenger-platform/reference/messenger-profile-api/greeting
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  setGreetingText(text) {
+  setGreetingText(text, pageId) {
     const greeting = (typeof text !== 'string') ? text : [{
       locale: 'default',
       text
     }];
-    return this.sendProfileRequest({ greeting });
+    return this.sendProfileRequest({greeting}, null, pageId);
   }
 
   /**
    * React to a user starting a conversation with the bot by clicking the Get Started button.
    * Facebook docs: https://developers.facebook.com/docs/messenger-platform/reference/messenger-profile-api/get-started-button
    * @param {String|Function} action If action is a string, the Get Started button postback will be set to that string. If it's a function, that callback will be executed when a user clicks the Get Started button.
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  setGetStartedButton(action) {
+  setGetStartedButton(action, pageId) {
     const payload = (typeof action === 'string') ? action : 'BOOTBOT_GET_STARTED';
     if (typeof action === 'function') {
       this.on(`postback:${payload}`, action);
@@ -369,18 +382,19 @@ class BootBot extends EventEmitter {
       get_started: {
         payload
       }
-    });
+    }, null, pageId);
   }
 
   /**
    * Removes the Get Started button call to action.
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  deleteGetStartedButton() {
+  deleteGetStartedButton(pageId) {
     return this.sendProfileRequest({
       fields: [
         'get_started'
       ]
-    }, 'DELETE');
+    }, 'DELETE', pageId);
   }
 
   /**
@@ -388,11 +402,12 @@ class BootBot extends EventEmitter {
    * Facebook docs: https://developers.facebook.com/docs/messenger-platform/reference/messenger-profile-api/persistent-menu
    * @param {Array.<String|Button>} buttons If buttons is an array of objects containing a locale attribute, it will be used as-is, expecting it to be an array of localized menues. For more info on the format of these objects, see the documentation.
    * @param {boolean} [disableInput=false] If disableInput is set to true, it will disable user input in the menu. The user will only be able to interact with the bot via the menu, postbacks, buttons and webviews.
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  setPersistentMenu(buttons, disableInput) {
+  setPersistentMenu(buttons, disableInput, pageId) {
     if (buttons && buttons[0] && buttons[0].locale !== undefined) {
       // Received an array of locales, send it as-is.
-      return this.sendProfileRequest({ persistent_menu: buttons });
+      return this.sendProfileRequest({persistent_menu: buttons}, null, pageId);
     }
     // If it's not an array of locales, we'll assume is an array of buttons.
     const formattedButtons = this._formatButtons(buttons);
@@ -402,18 +417,19 @@ class BootBot extends EventEmitter {
         composer_input_disabled: disableInput || false,
         call_to_actions: formattedButtons
       }]
-    });
+    }, null, pageId);
   }
 
   /**
    * Removes the Persistent Menu.
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  deletePersistentMenu() {
+  deletePersistentMenu(pageId) {
     return this.sendProfileRequest({
       fields: [
         'persistent_menu'
       ]
-    }, 'DELETE');
+    }, 'DELETE', pageId);
   }
 
   /**
@@ -423,24 +439,24 @@ class BootBot extends EventEmitter {
    * @param {SendMessageOptions} options
    * @returns {Promise}
    */
-  say(recipientId, message, options) {
+  say(recipientId, message, options, pageId) {
     if (typeof message === 'string') {
-      return this.sendTextMessage(recipientId, message, [], options);
+      return this.sendTextMessage(recipientId, message, [], options, pageId);
     } else if (message && message.text) {
       if (message.quickReplies && message.quickReplies.length > 0) {
-        return this.sendTextMessage(recipientId, message.text, message.quickReplies, options);
+        return this.sendTextMessage(recipientId, message.text, message.quickReplies, options, pageId);
       } else if (message.buttons && message.buttons.length > 0) {
-        return this.sendButtonTemplate(recipientId, message.text, message.buttons, options);
+        return this.sendButtonTemplate(recipientId, message.text, message.buttons, options, pageId);
       }
     } else if (message && message.attachment) {
-      return this.sendAttachment(recipientId, message.attachment, message.url, message.quickReplies, options);
+      return this.sendAttachment(recipientId, message.attachment, message.url, message.quickReplies, options, pageId);
     } else if (message && message.elements && message.buttons) {
-      return this.sendListTemplate(recipientId, message.elements, message.buttons, options);
+      return this.sendListTemplate(recipientId, message.elements, message.buttons, options, pageId);
     } else if (message && message.cards) {
-      return this.sendGenericTemplate(recipientId, message.cards, options);
+      return this.sendGenericTemplate(recipientId, message.cards, options, pageId);
     } else if (Array.isArray(message)) {
       return message.reduce((promise, msg) => {
-        return promise.then(() => this.say(recipientId, msg, options));
+        return promise.then(() => this.say(recipientId, msg, options, pageId));
       }, Promise.resolve());
     }
     console.error('Invalid format for .say() message.');
@@ -469,12 +485,13 @@ class BootBot extends EventEmitter {
    * Starts a new conversation with the user.
    * @param {Recipient|String} recipientId
    * @param {Function} factory Executed immediately receiving the convo instance as it's only param.
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  conversation(recipientId, factory) {
+  conversation(recipientId, factory, pageId) {
     if (!recipientId || !factory || typeof factory !== 'function') {
       return console.error(`You need to specify a recipient and a callback to start a conversation`);
     }
-    const convo = new Conversation(this, recipientId);
+    const convo = new Conversation(this, recipientId, pageId);
     this._conversations.push(convo);
     convo.on('end', (endedConvo) => {
       const removeIndex = this._conversations.indexOf(endedConvo);
@@ -529,30 +546,35 @@ class BootBot extends EventEmitter {
    * @param {String} type
    * @param {Object} event
    * @param {Object} data
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  _handleEvent(type, event, data) {
-    const recipient = (type === 'authentication' && !event.sender) ? { user_ref: event.optin.user_ref } : event.sender.id;
-    const chat = new Chat(this, recipient);
+  _handleEvent(type, event, data, pageId) {
+    const recipient = (type === 'authentication' && !event.sender) ? {user_ref: event.optin.user_ref} : event.sender.id;
+    const chat = new Chat(this, recipient, pageId);
     this.emit(type, event, chat, data);
   }
 
-  _handleMessageEvent(event) {
-    if (this._handleConversationResponse('message', event)) { return; }
+  _handleMessageEvent(event, pageId) {
+    if (this._handleConversationResponse('message', event)) {
+      return;
+    }
     const text = event.message.text;
     const senderId = event.sender.id;
     let captured = false;
-    if (!text) { return; }
+    if (!text) {
+      return;
+    }
 
     this._hearMap.forEach(hear => {
       if (typeof hear.keyword === 'string' && hear.keyword.toLowerCase() === text.toLowerCase()) {
-        const res = hear.callback.apply(this, [event, new Chat(this, senderId), {
+        const res = hear.callback.apply(this, [event, new Chat(this, senderId, pageId), {
           keyword: hear.keyword,
           captured
         }]);
         captured = true;
         return res;
       } else if (hear.keyword instanceof RegExp && hear.keyword.test(text)) {
-        const res = hear.callback.apply(this, [event, new Chat(this, senderId), {
+        const res = hear.callback.apply(this, [event, new Chat(this, senderId, pageId), {
           keyword: hear.keyword,
           match: text.match(hear.keyword),
           captured
@@ -562,30 +584,36 @@ class BootBot extends EventEmitter {
       }
     });
 
-    this._handleEvent('message', event, { captured });
+    this._handleEvent('message', event, {captured}, pageId);
   }
 
-  _handleAttachmentEvent(event) {
-    if (this._handleConversationResponse('attachment', event)) { return; }
-    this._handleEvent('attachment', event);
+  _handleAttachmentEvent(event, pageId) {
+    if (this._handleConversationResponse('attachment', event)) {
+      return;
+    }
+    this._handleEvent('attachment', event, null, pageId);
   }
 
-  _handlePostbackEvent(event) {
-    if (this._handleConversationResponse('postback', event)) { return; }
+  _handlePostbackEvent(event, pageId) {
+    if (this._handleConversationResponse('postback', event)) {
+      return;
+    }
     const payload = event.postback.payload;
     if (payload) {
-      this._handleEvent(`postback:${payload}`, event);
+      this._handleEvent(`postback:${payload}`, event, null, pageId);
     }
-    this._handleEvent('postback', event);
+    this._handleEvent('postback', event, null, pageId);
   }
 
-  _handleQuickReplyEvent(event) {
-    if (this._handleConversationResponse('quick_reply', event)) { return; }
+  _handleQuickReplyEvent(event, pageId) {
+    if (this._handleConversationResponse('quick_reply', event)) {
+      return;
+    }
     const payload = event.message.quick_reply && event.message.quick_reply.payload;
     if (payload) {
-      this._handleEvent(`quick_reply:${payload}`, event);
+      this._handleEvent(`quick_reply:${payload}`, event, null, pageId);
     }
-    this._handleEvent('quick_reply', event);
+    this._handleEvent('quick_reply', event, null, pageId);
   }
 
   _handleConversationResponse(type, event) {
@@ -612,9 +640,17 @@ class BootBot extends EventEmitter {
    * @returns {Recipient}
    */
   _createRecipient(recipient) {
-    return (typeof recipient === 'object') ? recipient : { id: recipient };
+    return (typeof recipient === 'object') ? recipient : {id: recipient};
   }
 
+  /**
+   * Returns accessToken if it's a string or uses pageId to get accessToken for multi page bots
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
+   * @returns {String}
+   */
+  _getAccessToken(pageId) {
+    return typeof this.accessToken === 'string' ? this.accessToken : this.accessToken[pageId];
+  }
 
   _initWebhook() {
     this.app.get(this.webhook, (req, res) => {
@@ -647,30 +683,31 @@ class BootBot extends EventEmitter {
   handleFacebookData(data) {
     // Iterate over each entry. There may be multiple if batched.
     data.entry.forEach((entry) => {
+      const pageId = entry.id;
       // Iterate over each messaging event
       entry.messaging.forEach((event) => {
         if (event.message && event.message.is_echo && !this.broadcastEchoes) {
           return;
         }
         if (event.optin) {
-          this._handleEvent('authentication', event);
+          this._handleEvent('authentication', event, null, pageId);
         } else if (event.message && event.message.text) {
-          this._handleMessageEvent(event);
+          this._handleMessageEvent(event, pageId);
           if (event.message.quick_reply) {
-            this._handleQuickReplyEvent(event);
+            this._handleQuickReplyEvent(event, pageId);
           }
         } else if (event.message && event.message.attachments) {
-          this._handleAttachmentEvent(event);
+          this._handleAttachmentEvent(event, pageId);
         } else if (event.postback) {
-          this._handlePostbackEvent(event);
+          this._handlePostbackEvent(event, pageId);
         } else if (event.delivery) {
-          this._handleEvent('delivery', event);
+          this._handleEvent('delivery', event, null, pageId);
         } else if (event.read) {
-          this._handleEvent('read', event);
+          this._handleEvent('read', event, null, pageId);
         } else if (event.account_linking) {
-          this._handleEvent('account_linking', event);
+          this._handleEvent('account_linking', event, null, pageId);
         } else if (event.referral) {
-          this._handleEvent('referral', event);
+          this._handleEvent('referral', event, null, pageId);
         } else {
           console.log('Webhook received unknown event: ', event);
         }
@@ -687,8 +724,8 @@ class BootBot extends EventEmitter {
       var method = elements[0];
       var signatureHash = elements[1];
       var expectedHash = crypto.createHmac('sha1', this.appSecret)
-        .update(buf)
-        .digest('hex');
+          .update(buf)
+          .digest('hex');
 
       if (signatureHash != expectedHash) {
         throw new Error('Couldn\'t validate the request signature.');
@@ -697,4 +734,4 @@ class BootBot extends EventEmitter {
   }
 }
 
-module.exports = BootBot;
+module.exports = BootBot;
\ No newline at end of file
diff --git a/lib/Chat.js b/lib/Chat.js
index 1f6b1aa..dc79cd6 100644
--- a/lib/Chat.js
+++ b/lib/Chat.js
@@ -5,15 +5,17 @@ const BootBot = require('./BootBot');
 class Chat extends EventEmitter {
   /**
    * @param {BootBot} bot Bot instance.
-   * @param {String} userId 
-   */
-  constructor(bot, userId) {
-    super();
-    if (!bot || !userId) {
-      throw new Error('You need to specify a BootBot instance and a userId');
-    }
-    this.bot = bot;
-    this.userId = userId;
+   * @param {String} userId
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
+   */
+  constructor(bot, userId, pageId) {
+      super();
+      if (!bot || !userId) {
+          throw new Error('You need to specify a BootBot instance and a userId');
+      }
+      this.bot = bot;
+      this.userId = userId;
+      this.pageId = pageId;
   }
 
   /**
@@ -37,7 +39,7 @@ class Chat extends EventEmitter {
    * @param {SendMessageOptions} options
    */
   say(message, options) {
-    return this.bot.say(this.userId, message, options);
+      return this.bot.say(this.userId, message, options, this.pageId);
   }
 
   /**
@@ -49,13 +51,13 @@ class Chat extends EventEmitter {
    * @property {String} [image_url]
    */
 
-  /**
-   * @param {String} text 
-   * @param {Array.<QuickReply|String>} quickReplies Array of strings or quick_reply objects
-   * @param {SendMessageOptions} [options] 
-   */
+    /**
+     * @param {String} text
+     * @param {Array.<QuickReply|String>} quickReplies Array of strings or quick_reply objects
+     * @param {SendMessageOptions} [options]
+     */
   sendTextMessage(text, quickReplies, options) {
-    return this.bot.sendTextMessage(this.userId, text, quickReplies, options);
+        return this.bot.sendTextMessage(this.userId, text, quickReplies, options, this.pageId);
   }
 
   /**
@@ -64,13 +66,13 @@ class Chat extends EventEmitter {
    * @typedef {Object} Button
    */
 
-  /**
-   * @param {String} text Message to be sent.
-   * @param {Array.<String|Button>} buttons
-   * @param {SendMessageOptions} [options] 
-   */
+    /**
+     * @param {String} text Message to be sent.
+     * @param {Array.<String|Button>} buttons
+     * @param {SendMessageOptions} [options]
+     */
   sendButtonTemplate(text, buttons, options) {
-    return this.bot.sendButtonTemplate(this.userId, text, buttons, options);
+        return this.bot.sendButtonTemplate(this.userId, text, buttons, options, this.pageId);
   }
 
   /**
@@ -82,22 +84,22 @@ class Chat extends EventEmitter {
    * @property {Array.<Button>} buttons An array of buttons to append to the template. A maximum of 3 buttons per element is supported.
    */
 
-  /**
-   * @param {Array.<Element>} cards 
-   * @param {SendMessageOptions} [options] 
-   */
+    /**
+     * @param {Array.<Element>} cards
+     * @param {SendMessageOptions} [options]
+     */
   sendGenericTemplate(cards, options) {
-    return this.bot.sendGenericTemplate(this.userId, cards, options);
+        return this.bot.sendGenericTemplate(this.userId, cards, options, this.pageId);
   }
 
-  /**
-   * @param {Array.<Element>} elements 
-   * @param {Array.<String|Button>} buttons An array with one element: string or button object.
-   * @param {SendMessageOptions} [options]
-   * @param {String} [options.topElementStyle]
-   */
+    /**
+     * @param {Array.<Element>} elements
+     * @param {Array.<String|Button>} buttons An array with one element: string or button object.
+     * @param {SendMessageOptions} [options]
+     * @param {String} [options.topElementStyle]
+     */
   sendListTemplate(elements, buttons, options) {
-    return this.bot.sendListTemplate(this.userId, elements, buttons, options);
+        return this.bot.sendListTemplate(this.userId, elements, buttons, options, this.pageId);
   }
 
   /**
@@ -106,17 +108,17 @@ class Chat extends EventEmitter {
    * @param {SendMessageOptions} [options]
    */
   sendTemplate(payload, options) {
-    return this.bot.sendTemplate(this.userId, payload, options);
+      return this.bot.sendTemplate(this.userId, payload, options, this.pageId);
   }
 
-  /**
-   * @param {String} type Must be 'image', 'audio', 'video' or 'file'.
-   * @param {String} url URL of the attachment.
-   * @param {Array.<QuickReply>} quickReplies 
-   * @param {SendMessageOptions} options 
-   */
+    /**
+     * @param {String} type Must be 'image', 'audio', 'video' or 'file'.
+     * @param {String} url URL of the attachment.
+     * @param {Array.<QuickReply>} quickReplies
+     * @param {SendMessageOptions} options
+     */
   sendAttachment(type, url, quickReplies, options) {
-    return this.bot.sendAttachment(this.userId, type, url, quickReplies, options);
+        return this.bot.sendAttachment(this.userId, type, url, quickReplies, options, this.pageId);
   }
 
   /**
@@ -126,16 +128,16 @@ class Chat extends EventEmitter {
    * @param {SendMessageOptions} [options] NOT USED.
    */
   sendAction(action, options) {
-    return this.bot.sendAction(this.userId, action, options);
+      return this.bot.sendAction(this.userId, action, options, this.pageId);
   }
 
-  /**
-   * Use this method if you want to send a custom message object.
-   * @param {Message} message The message to send.
-   * @param {SendMessageOptions} [options] 
-   */
+    /**
+     * Use this method if you want to send a custom message object.
+     * @param {Message} message The message to send.
+     * @param {SendMessageOptions} [options]
+     */
   sendMessage(message, options) {
-    return this.bot.sendMessage(this.userId, message, options);
+        return this.bot.sendMessage(this.userId, message, options, this.pageId);
   }
 
   /**
@@ -145,22 +147,22 @@ class Chat extends EventEmitter {
    * @returns {Promise}
    */
   sendRequest(body, endpoint, method) {
-    return this.bot.sendRequest(body, endpoint, method);
+      return this.bot.sendRequest(body, endpoint, method, this.pageId);
   }
 
-  /**
-   * Convinient method to send a typing_on action and then a typing_off action after milliseconds to simulate the bot is actually typing. Max value is 20000 (20 seconds).
-   * @param {Number} milliseconds 
-   */
+    /**
+     * Convinient method to send a typing_on action and then a typing_off action after milliseconds to simulate the bot is actually typing. Max value is 20000 (20 seconds).
+     * @param {Number} milliseconds
+     */
   sendTypingIndicator(milliseconds) {
-    return this.bot.sendTypingIndicator(this.userId, milliseconds);
+        return this.bot.sendTypingIndicator(this.userId, milliseconds, this.pageId);
   }
 
   /**
    * Returns a Promise that contains the user's profile information.
    */
   getUserProfile() {
-    return this.bot.getUserProfile(this.userId);
+      return this.bot.getUserProfile(this.userId, this.pageId);
   }
 
   /**
@@ -168,8 +170,8 @@ class Chat extends EventEmitter {
    * @param {Function} factory Executed immediately receiving the convo instance as it's only param.
    */
   conversation(factory) {
-    return this.bot.conversation(this.userId, factory);
+      return this.bot.conversation(this.userId, factory, this.pageId);
   }
 }
 
-module.exports = Chat;
+module.exports = Chat;
\ No newline at end of file
diff --git a/lib/Conversation.js b/lib/Conversation.js
index cd3348c..2869362 100644
--- a/lib/Conversation.js
+++ b/lib/Conversation.js
@@ -7,10 +7,11 @@ class Conversation extends Chat {
   /**
    * Create a new conversation with a user.
    * @param {BootBot} bot Bot instance
-   * @param {String} userId 
+   * @param {String} userId
+   * @param {Number|String} pageId Facebook page ID for multi page bots.
    */
-  constructor(bot, userId) {
-    super(bot, userId);
+  constructor(bot, userId, pageId) {
+    super(bot, userId, pageId);
     this.bot = bot;
     this.userId = userId;
     this.context = {};
@@ -18,7 +19,7 @@ class Conversation extends Chat {
     this.start();
   }
 
-   /**
+  /**
    * @typedef {Object} SendMessageOptions
    * @property {Boolean|Number} [typing=false] Send a typing indicator before sending the message. If set to true, it will automatically calculate how long it lasts based on the message length. If it's a number, it will show the typing indicator for that amount of milliseconds (max. 20000 - 20 seconds)
    * @property {Function} [onDelivery] Callback that will be executed when the message is received by the user. Receives params: (payload, chat, data)
@@ -27,10 +28,10 @@ class Conversation extends Chat {
 
   /**
    * If question is a string or an object, the .say() method will be invoked immediately with that string or object, if it's a function it will also be invoked immedately with the convo instance as its only param.
-   * @param {String} question 
+   * @param {String} question
    * @param {Function} answer Receives the payload, convo and data params (similar to the callback function of the .on() or .hear() methods, except it receives the convo instance instead of the chat instance). The answer function will be called whenever the user replies to the question with a text message or quick reply.
    * @param {Array.<Function>} callbacks Used to listen to specific types of answers to the question. You can listen for postback, quick_reply and attachment events, or you can match a specific text pattern.
-   * @param {SendMessageOptions} options 
+   * @param {SendMessageOptions} options
    * @returns {this}
    */
   ask(question, answer, callbacks, options) {
@@ -49,8 +50,8 @@ class Conversation extends Chat {
   }
 
   /**
-   * @param {Object} payload 
-   * @param {Object} data 
+   * @param {Object} payload
+   * @param {Object} data
    */
   respond(payload, data) {
     if (!this.isWaitingForAnswer()) {
@@ -63,7 +64,7 @@ class Conversation extends Chat {
     if (data.type === 'postback' || data.type === 'quick_reply') {
       const postbackPayload = (data.type === 'postback') ? payload.postback.payload : payload.message.quick_reply.payload;
       const specificPostbackCallback = this.listeningCallbacks.find(callbackObject => (
-        callbackObject.event === `${data.type}:${postbackPayload}`
+          callbackObject.event === `${data.type}:${postbackPayload}`
       ));
       if (specificPostbackCallback && typeof specificPostbackCallback.callback === 'function') {
         this.stopWaitingForAnswer();
@@ -71,7 +72,7 @@ class Conversation extends Chat {
       }
 
       const genericPostbackCallback = this.listeningCallbacks.find(callbackObject => (
-        callbackObject.event === data.type
+          callbackObject.event === data.type
       ));
       if (genericPostbackCallback && typeof genericPostbackCallback.callback === 'function') {
         this.stopWaitingForAnswer();
@@ -82,7 +83,7 @@ class Conversation extends Chat {
     // Check for a callback listening for an attachment
     if (data.type === 'attachment') {
       const attachmentCallback = this.listeningCallbacks.find(callbackObject => (
-        callbackObject.event === 'attachment'
+          callbackObject.event === 'attachment'
       ));
       if (attachmentCallback && typeof attachmentCallback.callback === 'function') {
         this.stopWaitingForAnswer();
@@ -92,7 +93,7 @@ class Conversation extends Chat {
 
     // Check for text messages that match a listening pattern
     const patternCallbacks = this.listeningCallbacks.filter(callbackObject => (
-      callbackObject.pattern !== undefined
+        callbackObject.pattern !== undefined
     ));
     if (data.type === 'message' && patternCallbacks.length > 0) {
       for (let i = 0; i < patternCallbacks.length; i += 1) {
@@ -112,7 +113,7 @@ class Conversation extends Chat {
     // for that quick reply that will be executed later, return without calling listeningAnswer
     if (data.type === 'message' && payload.message.quick_reply && payload.message.quick_reply.payload) {
       const quickReplyCallback = this.listeningCallbacks.find(callbackObject => (
-        callbackObject.event === `quick_reply` || callbackObject.event === `quick_reply:${payload.message.quick_reply.payload}`
+          callbackObject.event === `quick_reply` || callbackObject.event === `quick_reply:${payload.message.quick_reply.payload}`
       ));
       if (quickReplyCallback && typeof quickReplyCallback.callback === 'function') {
         return;
@@ -168,7 +169,7 @@ class Conversation extends Chat {
 
   /**
    * Retrieve a value from the conversation's context
-   * @param {String} property 
+   * @param {String} property
    */
   get(property) {
     return this.context[property];
@@ -185,4 +186,4 @@ class Conversation extends Chat {
   }
 }
 
-module.exports = Conversation;
+module.exports = Conversation;
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 373bde7..361393f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
       "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
       "requires": {
-        "mime-types": "2.1.18",
+        "mime-types": "~2.1.18",
         "negotiator": "0.6.1"
       }
     },
@@ -36,15 +36,15 @@
       "integrity": "sha1-WykhmP/dVTs6DyDe0FkrlWlVyLQ=",
       "requires": {
         "bytes": "3.0.0",
-        "content-type": "1.0.4",
+        "content-type": "~1.0.4",
         "debug": "2.6.9",
-        "depd": "1.1.2",
-        "http-errors": "1.6.3",
+        "depd": "~1.1.2",
+        "http-errors": "~1.6.3",
         "iconv-lite": "0.4.23",
-        "on-finished": "2.3.0",
+        "on-finished": "~2.3.0",
         "qs": "6.5.2",
         "raw-body": "2.3.3",
-        "type-is": "1.6.16"
+        "type-is": "~1.6.16"
       }
     },
     "brace-expansion": {
@@ -53,7 +53,7 @@
       "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
       "dev": true,
       "requires": {
-        "balanced-match": "1.0.0",
+        "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
       }
     },
@@ -74,9 +74,9 @@
       "integrity": "sha1-TQJjewZ/6Vi9v906QOxW/vc3Mkc=",
       "dev": true,
       "requires": {
-        "assertion-error": "1.1.0",
-        "deep-eql": "0.1.3",
-        "type-detect": "1.0.0"
+        "assertion-error": "^1.0.1",
+        "deep-eql": "^0.1.3",
+        "type-detect": "^1.0.0"
       }
     },
     "commander": {
@@ -176,7 +176,7 @@
       "resolved": "https://registry.npmjs.org/encoding/-/encoding-0.1.12.tgz",
       "integrity": "sha1-U4tm8+5izRq1HsMjgp0flIDHS+s=",
       "requires": {
-        "iconv-lite": "0.4.23"
+        "iconv-lite": "~0.4.13"
       }
     },
     "escape-html": {
@@ -205,36 +205,36 @@
       "resolved": "https://registry.npmjs.org/express/-/express-4.16.3.tgz",
       "integrity": "sha1-avilAjUNsyRuzEvs9rWjTSL37VM=",
       "requires": {
-        "accepts": "1.3.5",
+        "accepts": "~1.3.5",
         "array-flatten": "1.1.1",
         "body-parser": "1.18.2",
         "content-disposition": "0.5.2",
-        "content-type": "1.0.4",
+        "content-type": "~1.0.4",
         "cookie": "0.3.1",
         "cookie-signature": "1.0.6",
         "debug": "2.6.9",
-        "depd": "1.1.2",
-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "etag": "1.8.1",
+        "depd": "~1.1.2",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
         "finalhandler": "1.1.1",
         "fresh": "0.5.2",
         "merge-descriptors": "1.0.1",
-        "methods": "1.1.2",
-        "on-finished": "2.3.0",
-        "parseurl": "1.3.2",
+        "methods": "~1.1.2",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.2",
         "path-to-regexp": "0.1.7",
-        "proxy-addr": "2.0.3",
+        "proxy-addr": "~2.0.3",
         "qs": "6.5.1",
-        "range-parser": "1.2.0",
+        "range-parser": "~1.2.0",
         "safe-buffer": "5.1.1",
         "send": "0.16.2",
         "serve-static": "1.13.2",
         "setprototypeof": "1.1.0",
-        "statuses": "1.4.0",
-        "type-is": "1.6.16",
+        "statuses": "~1.4.0",
+        "type-is": "~1.6.16",
         "utils-merge": "1.0.1",
-        "vary": "1.1.2"
+        "vary": "~1.1.2"
       },
       "dependencies": {
         "body-parser": {
@@ -243,15 +243,15 @@
           "integrity": "sha1-h2eKGdhLR9hZuDGZvVm84iKxBFQ=",
           "requires": {
             "bytes": "3.0.0",
-            "content-type": "1.0.4",
+            "content-type": "~1.0.4",
             "debug": "2.6.9",
-            "depd": "1.1.2",
-            "http-errors": "1.6.3",
+            "depd": "~1.1.1",
+            "http-errors": "~1.6.2",
             "iconv-lite": "0.4.19",
-            "on-finished": "2.3.0",
+            "on-finished": "~2.3.0",
             "qs": "6.5.1",
             "raw-body": "2.3.2",
-            "type-is": "1.6.16"
+            "type-is": "~1.6.15"
           }
         },
         "iconv-lite": {
@@ -288,7 +288,7 @@
                 "depd": "1.1.1",
                 "inherits": "2.0.3",
                 "setprototypeof": "1.0.3",
-                "statuses": "1.4.0"
+                "statuses": ">= 1.3.1 < 2"
               }
             },
             "setprototypeof": {
@@ -311,12 +311,12 @@
       "integrity": "sha512-Y1GUDo39ez4aHAw7MysnUD5JzYX+WaIj8I57kO3aEPT1fFRL4sr7mjei97FgnwhAyyzRYmQZaTHb2+9uZ1dPtg==",
       "requires": {
         "debug": "2.6.9",
-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "on-finished": "2.3.0",
-        "parseurl": "1.3.2",
-        "statuses": "1.4.0",
-        "unpipe": "1.0.0"
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.2",
+        "statuses": "~1.4.0",
+        "unpipe": "~1.0.0"
       },
       "dependencies": {
         "statuses": {
@@ -332,7 +332,7 @@
       "integrity": "sha1-XtPM1jZVEJc4NGXZlhmRAOhhYek=",
       "dev": true,
       "requires": {
-        "samsam": "1.1.2"
+        "samsam": "~1.1"
       }
     },
     "forwarded": {
@@ -357,12 +357,12 @@
       "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
       "dev": true,
       "requires": {
-        "fs.realpath": "1.0.0",
-        "inflight": "1.0.6",
-        "inherits": "2.0.3",
-        "minimatch": "3.0.4",
-        "once": "1.4.0",
-        "path-is-absolute": "1.0.1"
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
       }
     },
     "growl": {
@@ -388,10 +388,10 @@
       "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
       "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
       "requires": {
-        "depd": "1.1.2",
+        "depd": "~1.1.2",
         "inherits": "2.0.3",
         "setprototypeof": "1.1.0",
-        "statuses": "1.5.0"
+        "statuses": ">= 1.4.0 < 2"
       }
     },
     "iconv-lite": {
@@ -399,7 +399,7 @@
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.23.tgz",
       "integrity": "sha512-neyTUVFtahjf0mB3dZT77u+8O0QB89jFdnBkd5P1JgYPbPaia3gXXOVL2fq8VyU2gMMD7SaN7QukTB/pmXYvDA==",
       "requires": {
-        "safer-buffer": "2.1.2"
+        "safer-buffer": ">= 2.1.2 < 3"
       }
     },
     "inflight": {
@@ -408,8 +408,8 @@
       "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
       "dev": true,
       "requires": {
-        "once": "1.4.0",
-        "wrappy": "1.0.2"
+        "once": "^1.3.0",
+        "wrappy": "1"
       }
     },
     "inherits": {
@@ -468,7 +468,7 @@
       "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.18.tgz",
       "integrity": "sha512-lc/aahn+t4/SWV/qcmumYjymLsWfN3ELhpmVuUFjgsORruuZPVSwAQryq+HHGvO/SI2KVX26bx+En+zhM8g8hQ==",
       "requires": {
-        "mime-db": "1.33.0"
+        "mime-db": "~1.33.0"
       }
     },
     "minimatch": {
@@ -477,7 +477,7 @@
       "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
       "dev": true,
       "requires": {
-        "brace-expansion": "1.1.11"
+        "brace-expansion": "^1.1.7"
       }
     },
     "minimist": {
@@ -539,8 +539,8 @@
       "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-1.7.3.tgz",
       "integrity": "sha512-NhZ4CsKx7cYm2vSrBAr2PvFOe6sWDf0UYLRqA6svUYg7+/TSfVAu49jYC4BvQ4Sms9SZgdqGBgroqfDhJdTyKQ==",
       "requires": {
-        "encoding": "0.1.12",
-        "is-stream": "1.1.0"
+        "encoding": "^0.1.11",
+        "is-stream": "^1.0.1"
       }
     },
     "on-finished": {
@@ -557,7 +557,7 @@
       "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
       "dev": true,
       "requires": {
-        "wrappy": "1.0.2"
+        "wrappy": "1"
       }
     },
     "os-homedir": {
@@ -586,7 +586,7 @@
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.3.tgz",
       "integrity": "sha512-jQTChiCJteusULxjBp8+jftSQE5Obdl3k4cnmLA6WXtK6XFuWRnvVL7aCiBqaLPM8c4ph0S4tKna8XvmIwEnXQ==",
       "requires": {
-        "forwarded": "0.1.2",
+        "forwarded": "~0.1.2",
         "ipaddr.js": "1.6.0"
       }
     },
@@ -633,18 +633,18 @@
       "integrity": "sha512-E64YFPUssFHEFBvpbbjr44NCLtI1AohxQ8ZSiJjQLskAdKuriYEP6VyGEsRDH8ScozGpkaX1BGvhanqCwkcEZw==",
       "requires": {
         "debug": "2.6.9",
-        "depd": "1.1.2",
-        "destroy": "1.0.4",
-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "etag": "1.8.1",
+        "depd": "~1.1.2",
+        "destroy": "~1.0.4",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
         "fresh": "0.5.2",
-        "http-errors": "1.6.3",
+        "http-errors": "~1.6.2",
         "mime": "1.4.1",
         "ms": "2.0.0",
-        "on-finished": "2.3.0",
-        "range-parser": "1.2.0",
-        "statuses": "1.4.0"
+        "on-finished": "~2.3.0",
+        "range-parser": "~1.2.0",
+        "statuses": "~1.4.0"
       },
       "dependencies": {
         "statuses": {
@@ -659,9 +659,9 @@
       "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.13.2.tgz",
       "integrity": "sha512-p/tdJrO4U387R9oMjb1oj7qSMaMfmOyd4j9hOFoxZe2baQszgHcSWjuya/CiT5kgZZKRudHNOA0pYXOl8rQ5nw==",
       "requires": {
-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "parseurl": "1.3.2",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "parseurl": "~1.3.2",
         "send": "0.16.2"
       }
     },
@@ -679,7 +679,7 @@
         "formatio": "1.1.1",
         "lolex": "1.3.2",
         "samsam": "1.1.2",
-        "util": "0.11.0"
+        "util": ">=0.10.3 <1"
       }
     },
     "statuses": {
@@ -693,7 +693,7 @@
       "integrity": "sha512-rKC3+DyXWgK0ZLKwmRsrkyHVZAjNkfzeehuFWdGGcqGDTZFH73+RH6S/RDAAxl9GusSjZSUWYLmT9N5pzXFOXQ==",
       "dev": true,
       "requires": {
-        "has-flag": "2.0.0"
+        "has-flag": "^2.0.0"
       }
     },
     "type-detect": {
@@ -708,7 +708,7 @@
       "integrity": "sha512-HRkVv/5qY2G6I8iab9cI7v1bOIdhm94dVjQCPFElW9W+3GeDOSHmy2EBYe4VTApuzolPcmgFTN3ftVJRKR2J9Q==",
       "requires": {
         "media-typer": "0.3.0",
-        "mime-types": "2.1.18"
+        "mime-types": "~2.1.18"
       }
     },
     "unpipe": {
diff --git a/test/BootBot.spec.js b/test/BootBot.spec.js
index 417753f..cfc2a9f 100644
--- a/test/BootBot.spec.js
+++ b/test/BootBot.spec.js
@@ -512,16 +512,17 @@ describe('BootBot', () => {
         'world',
         '!'
       ];
-      const options = { typing: true };
+      const options = {typing: true};
+      const pageId = 4321;
 
       expect(spy.called).to.equal(false)
 
-      bot.say(recipentId, messages, options).then(() => {
+      bot.say(recipentId, messages, options, pageId).then(() => {
         expect(spy.callCount).to.equal(4)
-        expect(spy.getCall(0).args).to.deep.equal([ recipentId, messages, options ])
-        expect(spy.getCall(1).args).to.deep.equal([ recipentId, messages[0], options ])
-        expect(spy.getCall(2).args).to.deep.equal([ recipentId, messages[1], options ])
-        expect(spy.getCall(3).args).to.deep.equal([ recipentId, messages[2], options ])
+        expect(spy.getCall(0).args).to.deep.equal([recipentId, messages, options, pageId])
+        expect(spy.getCall(1).args).to.deep.equal([recipentId, messages[0], options, pageId])
+        expect(spy.getCall(2).args).to.deep.equal([recipentId, messages[1], options, pageId])
+        expect(spy.getCall(3).args).to.deep.equal([recipentId, messages[2], options, pageId])
         done()
       })
     });
@@ -678,4 +679,4 @@ describe('BootBot', () => {
       expect(spy.calledWith(expectedRecipient, expectedMessage)).to.equal(true);
     });
   });
-});
+});
\ No newline at end of file

From d9a4a32ae9151acb7dd34b5e8a15cb0c6da0a91e Mon Sep 17 00:00:00 2001
From: Akram Lazkanee <MhdAkram.Lazkani@syriatel.com.sy>
Date: Tue, 31 Dec 2019 10:56:10 +0200
Subject: [PATCH 2/4] Added support for facebook graphVersionAPI & Some Fixes

---
 lib/BootBot.js | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/lib/BootBot.js b/lib/BootBot.js
index acf1c86..e1632c0 100644
--- a/lib/BootBot.js
+++ b/lib/BootBot.js
@@ -13,7 +13,7 @@ class BootBot extends EventEmitter {
    * 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).
    * If you want to specify a custom endpoint name for your webhook, you can do it with the webhook option.
    * @param {Object} options
-   * @param {String} options.accessToken
+   * @param {Object} options.accessToken
    * @param {String} options.verifyToken
    * @param {String} options.appSecret
    * @param {String} [options.webhook=/webhook]
@@ -30,6 +30,7 @@ class BootBot extends EventEmitter {
     this.broadcastEchoes = options.broadcastEchoes || false;
     this.app = express();
     this.webhook = options.webhook || '/webhook';
+    this.graphApiVersion = options.graphApiVersion || 'v2.12';
     this.webhook = this.webhook.charAt(0) !== '/' ? `/${this.webhook}` : this.webhook;
     this.app.use(bodyParser.json({verify: this._verifyRequestSignature.bind(this)}));
     this._hearMap = [];
@@ -279,7 +280,7 @@ class BootBot extends EventEmitter {
   sendRequest(body, endpoint, method, pageId) {
     endpoint = endpoint || 'messages';
     method = method || 'POST';
-    return fetch(`https://graph.facebook.com/v2.12/me/${endpoint}?access_token=${this._getAccessToken(pageId)}`, {
+    return fetch(`https://graph.facebook.com/${this.graphApiVersion}/me/${endpoint}?access_token=${this._getAccessToken(pageId)}`, {
       method,
       headers: {
         'Content-Type': 'application/json'
@@ -290,6 +291,8 @@ class BootBot extends EventEmitter {
         .then(res => {
           if (res.error) {
             console.log('Messenger Error received. For more information about error codes, see: https://goo.gl/d76uvB');
+            console.log(this._getAccessToken(pageId));
+            console.log(body);
             console.log(res.error);
           }
           return res;
@@ -347,7 +350,7 @@ class BootBot extends EventEmitter {
    * @returns {Promise}
    */
   getUserProfile(userId, pageId) {
-    const url = `https://graph.facebook.com/v2.12/${userId}?fields=first_name,last_name,profile_pic,locale,timezone,gender&access_token=${this._getAccessToken(pageId)}`;
+    const url = `https://graph.facebook.com/${this.graphApiVersion}/${userId}?fields=first_name,last_name,profile_pic,locale,timezone,gender&access_token=${this._getAccessToken(pageId)}`;
     return fetch(url)
         .then(res => res.json())
         .catch(err => console.log(`Error getting user profile: ${err}`));

From 6617c3ec7f04e1cbe09ad8133d4d0866992be7a3 Mon Sep 17 00:00:00 2001
From: Akram Lazkanee <MhdAkram.Lazkani@syriatel.com.sy>
Date: Tue, 31 Dec 2019 18:31:35 +0200
Subject: [PATCH 3/4] Added support RegExp for postbacks events

---
 lib/BootBot.js | 41 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 38 insertions(+), 3 deletions(-)

diff --git a/lib/BootBot.js b/lib/BootBot.js
index e1632c0..6e91e4e 100644
--- a/lib/BootBot.js
+++ b/lib/BootBot.js
@@ -34,6 +34,7 @@ class BootBot extends EventEmitter {
     this.webhook = this.webhook.charAt(0) !== '/' ? `/${this.webhook}` : this.webhook;
     this.app.use(bodyParser.json({verify: this._verifyRequestSignature.bind(this)}));
     this._hearMap = [];
+    this._postbackMap = [];
     this._conversations = [];
   }
 
@@ -291,8 +292,6 @@ class BootBot extends EventEmitter {
         .then(res => {
           if (res.error) {
             console.log('Messenger Error received. For more information about error codes, see: https://goo.gl/d76uvB');
-            console.log(this._getAccessToken(pageId));
-            console.log(body);
             console.log(res.error);
           }
           return res;
@@ -472,7 +471,18 @@ class BootBot extends EventEmitter {
    */
   hear(keywords, callback) {
     keywords = Array.isArray(keywords) ? keywords : [keywords];
-    keywords.forEach(keyword => this._hearMap.push({ keyword, callback }));
+    keywords.forEach(keyword => this._hearMap.push({keyword, callback}));
+    return this;
+  }
+
+  /**
+   * A convinient method to subscribe to message events containing specific postbacks keywords. The keyword param can be a string, a regex or an array of both strings and regexs that will be tested against the received message. If the bot receives a message that matches any of the keywords, it will execute the specified callback. String keywords are case-insensitive, but regular expressions are not case-insensitive by default, if you want them to be, specify the i flag.
+   * @param {String|Regex|Array} keywords
+   * @param {Function} callback
+   */
+  postback(keywords, callback) {
+    keywords = Array.isArray(keywords) ? keywords : [keywords];
+    keywords.forEach(keyword => this._postbackMap.push({keyword, callback}));
     return this;
   }
 
@@ -480,6 +490,7 @@ class BootBot extends EventEmitter {
    * Modules are simple functions that you can use to organize your code in different files and folders.
    * @param {Function} factory Called immediatly and receives the bot instance as its only parameter.
    */
+
   module(factory) {
     return factory.apply(this, [this]);
   }
@@ -602,7 +613,31 @@ class BootBot extends EventEmitter {
       return;
     }
     const payload = event.postback.payload;
+    // if (payload) {
+    const senderId = event.sender.id;
     if (payload) {
+      let captured = false;
+
+      this._postbackMap.forEach(postback => {
+        if (typeof postback.keyword === 'string' && postback.keyword.toLowerCase() === payload.toLowerCase()) {
+          const res = postback.callback.apply(this, [event, new Chat(this, senderId, pageId), {
+            keyword: postback.keyword,
+            captured
+          }]);
+          captured = true;
+          return res;
+        } else if (postback.keyword instanceof RegExp && postback.keyword.test(payload)) {
+          const res = postback.callback.apply(this, [event, new Chat(this, senderId, pageId), {
+            keyword: postback.keyword,
+            match: payload.match(postback.keyword),
+            captured
+          }]);
+          captured = true;
+          return res;
+        }
+      });
+      if (captured) return;
+
       this._handleEvent(`postback:${payload}`, event, null, pageId);
     }
     this._handleEvent('postback', event, null, pageId);

From 69a04dbbbdbc6af31b4c09d7057aee14c5f58537 Mon Sep 17 00:00:00 2001
From: Akram Lazkanee <abojihadbazoka@gmail.com>
Date: Thu, 27 Feb 2020 11:17:08 +0200
Subject: [PATCH 4/4] Add support for rendering views for Messenger Webview

---
 lib/BootBot.js | 10 ++++++++++
 package.json   |  1 +
 2 files changed, 11 insertions(+)

diff --git a/lib/BootBot.js b/lib/BootBot.js
index 6e91e4e..0137a93 100644
--- a/lib/BootBot.js
+++ b/lib/BootBot.js
@@ -30,8 +30,10 @@ class BootBot extends EventEmitter {
     this.broadcastEchoes = options.broadcastEchoes || false;
     this.app = express();
     this.webhook = options.webhook || '/webhook';
+    this.webview = options.webhook || '/views';
     this.graphApiVersion = options.graphApiVersion || 'v2.12';
     this.webhook = this.webhook.charAt(0) !== '/' ? `/${this.webhook}` : this.webhook;
+    this.webview = this.webhook.charAt(0) !== '/' ? `/${this.webview}` : this.webview;
     this.app.use(bodyParser.json({verify: this._verifyRequestSignature.bind(this)}));
     this._hearMap = [];
     this._postbackMap = [];
@@ -44,6 +46,7 @@ class BootBot extends EventEmitter {
    */
   start(port) {
     this._initWebhook();
+    this._initWebviews();
     this.app.set('port', port || 3000);
     this.server = this.app.listen(this.app.get('port'), () => {
       const portNum = this.app.get('port');
@@ -714,6 +717,13 @@ class BootBot extends EventEmitter {
     }).bind(this);
   }
 
+  _initWebviews() {
+    this.app.set('view engine', 'ejs');
+    this.app.get(this.webview + '/:page_name', (req, res) => {
+      res.render(req.params.page_name)
+    });
+  }
+
   /**
    * Use this to send a message from a parsed webhook message directly to your bot.
    * @param {Object} data
diff --git a/package.json b/package.json
index 6116469..172d452 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "body-parser": "^1.15.2",
     "config": "^1.21.0",
     "eventemitter3": "^1.2.0",
+    "ejs": "^3.0.1",
     "express": "^4.14.0",
     "node-fetch": "^1.5.3"
   },