Payment for Messenger - Handle Bot Messages

handle-messages.js

/**
 * Handle messages received by bot server
 *
 */

'use strict';

// Assume you have these functions defined and exported in your project folder
const sendTextMessage = require('../actions/sendTextMsg');
const sendButtonMsg = require('../actions/sendButtonMsg');
const sendReceiptMessage = require('../actions/sendReceiptMsg');
const botApi = require('../utils/botApi');

const receivedMessage = (event, storeName, user, pageObj) => {
  const senderID = event.sender.id;
  const recipientID = event.recipient.id;
  const timeOfMessage = event.timestamp;
  const message = event.message;

  console.log('Received message for user %d and page %d at %d with message:', senderID, recipientID, timeOfMessage);

  const messageId = message.mid;

  const quickReply = message.quick_reply;

  if (quickReply) {
    // Quick reply received
    const payload = quickReply.payload;
    console.log('Quick reply for message %s with payload %s', messageId, payload);

    if (payload.split('***')[0] === 'orderQty') {
      // Prepare order data for sending to db
      const orderInfo = payload.split('***');
      const qty = orderInfo[1]; const productId = orderInfo[2]; const productName = orderInfo[3]; const productPrice = orderInfo[4]; const productImage = orderInfo[5]; const productDesc = orderInfo[6];
      const orderedProducts = [{
        product_id: productId,
        product_qty: qty,
        product_name: productName,
        product_price: productPrice,
        product_image: productImage,
        product_description: productDesc
      }];

      const orderOwner = {
        'name': user.name,
        'address': user.address,
        'phone_number': user.phone_number,
        'receipt_address': {
          'street_1': user.address,
          'city': user.city,
          'postal_code': user.postal_code,
          'state': user.state,
          'country': user.country_code
        }
      };

      const orderTotal = orderedProducts.reduce((total, product) => {
        return total + (parseInt(product.product_price) * parseInt(product.product_qty));
      }, 0);
      const orderNumber = botApi.getOrderNumber();
      const orderData = {
        'order_number': orderNumber,
        'order_items': orderedProducts,
        'order_total': orderTotal,
        'order_owner': orderOwner,
        'order_status': 'Pending'
      };

      botApi.postOrder(storeName, orderData, (err, resp, body) => {
        if (!err && resp.statusCode === 200) {
          const submittedOrder = JSON.parse(body).order;
          const msg = `Thank you ${user.first_name}, your order #${submittedOrder.orderNumber} has been received. Please find your invoice attached below.`;
          sendTextMessage({
            recipientId: senderID,
            messageText: msg,
            page_token: pageObj.page_token,
            callback: () => {
              // Send user a receipt
              sendReceiptMessage(senderID, submittedOrder, pageObj.page_token, () => {
                // Send payment options to user
                const buttonMsg = {
                  attachment: {
                    type: 'template',
                    payload: {
                      template_type: 'button',
                      text: 'How would you like to pay for your order?',
                      buttons: [{
                        type: 'postback',
                        payload: `pay_mobilemoney_${submittedOrder.order_number}_${submittedOrder.order_total}_${submittedOrder.order_owner.phone_number}`,
                        title: 'Mobile Money (Ghana)'
                      },
                      {
                        type: 'web_url',
                        url: `${process.env.SERVER_URL}payment?store_name=${storeName}&user_id=${senderID}&mm_number=${submittedOrder.order_owner.phone_number}&page_name=${pageObj.page_name}&page_id=${pageObj.page_id}&order_number=${submittedOrder.order_number}&order_total=${submittedOrder.order_total}&order_id=${submittedOrder.order._id}`,
                        title: 'Card',
                        webview_height_ratio: 'compact',
                        messenger_extensions: true
                      },
                      {
                        type: 'postback',
                        payload: `pay_cashondelivery_${submittedOrder.order_number}_${submittedOrder.order_total}_${submittedOrder.order_owner.phone_number}`,
                        title: 'Cash on delivery'
                      }]
                    }
                  }
                };
                sendButtonMsg(senderID, buttonMsg, pageObj.page_token);
              });
            }
          });
        } else {
          // You should handle errors here
        }
      });
    }
  }
};

module.exports = receivedMessage;