Jfa WhatsApp Chatbot

Attention: This version is NOT STABLE yet!!! NOT USE YET!!!

With this node.js micro framework using Venom Bot under the hood, you can easily create a WhatsApp Chatbot . You will only need to edit your conversation flow in a single file.

Homepage: https://jordifernandes.com/jfa-whastapp-chatbot/

Getting Started

1. Create a new repository from this template
2. Install in your development environment
3. Configure port(s), credentials, etc
4. Write your conversation flow
5. Start

Install

Docker

Requirements: docker

Build and Run with Dockerfile

$ docker build -t wchatbot .
$ docker run --name wchatbot -p 3000:3000 -v /your_project_absolute_path/src:/wchatbot/src wchatbot

or Build and Run with Docker Compose

$ docker-compose build
$ docker-compose up

Visit http://localhost:3000 and play with your chatbot!

Virtual Machine

Requirements: nodejs (Latest maintenance LTS version), yarn (or npm), pm2, chrome/chromium

Use an nginx reverse proxy to publicly expose the http control panel (configuration example).

$ yarn install

Launch the chatbot and the http control panel

$ yarn start
$ yarn http-ctrl:start

Visit http://localhost:3000 and play with your chatbot!

Local Machine

Requirements: nodejs (Latest maintenance LTS version), yarn (or npm), chrome/chromium

$ yarn install

Launch the chatbot and the http control panel

$ yarn http-ctrl:dev:detach
$ yarn dev

Visit http://localhost:3000 and play with your chatbot!

Configuration

Edit ./src/config.js file

Basic

export const chatbotOptions = {
  httpCtrl: {
    port: 3000, // httpCtrl port (http://localhost:3000/)
    username: "admin", // httpCtrl auth login
    password: "chatbot",
  },
};

Advanced

export const venomOptions = {
  ...
  puppeteerOptions: { // Will be passed to puppeteer.launch.
    args: ["--no-sandbox"] // Use --no-sandbox with Docker
  },
  ...
};

Commands

Docker

Chatbot Controls

$ docker exec wchatbot yarn start
$ docker exec wchatbot yarn stop
$ docker exec wchatbot yarn restart
$ docker exec wchatbot yarn reload

HTTP Control Panel Controls

$ docker exec wchatbot yarn http-ctrl:start
$ docker exec wchatbot yarn http-ctrl:stop
$ docker exec wchatbot yarn http-ctrl:restart
$ docker exec wchatbot yarn http-ctrl:reload

Virtual Machine

Chatbot Controls

$ yarn start
$ yarn stop
$ yarn restart
$ yarn reload

HTTP Control Panel Controls

$ yarn http-ctrl:start
$ yarn http-ctrl:stop
$ yarn http-ctrl:restart
$ yarn http-ctrl:reload

Local Machine

Direct in your OS without Docker

Chatbot

$ yarn dev
$ yarn dev:detach

Launch HTTP Control Panel

$ yarn http-ctrl:dev
$ yarn http-ctrl:dev:detach

Sessions

Sessions and auth tokens are write in ./tokens folder.

Logs are write in ./logs folder. Attention: console.log and http-ctrl-console.log only write in ./logs folder with yarn dev:detach and yarn http-ctrl:dev:detach otherwise managed by pm2.

Docker

Chatbot

$ docker exec wchatbot yarn log

HTTP Control Panel

$ docker exec wchatbot yarn http-ctrl:log

Conversations

$ docker exec wchatbot yarn conversations

Virtual Machine

Chatbot

$ yarn log

HTTP Control Panel

$ yarn http-ctrl:log

Conversations

$ yarn conversations

Local Machine

Chatbot

$ yarn log:dev

HTTP Control Panel

$ yarn log:http-ctrl:dev

Conversations

$ yarn conversations

Conversation Flow

Edit ./src/conversations/conversation.js file.

The conversation flow is an array of ordered reply objects. A reply is only triggered if its parent (can be an integer or an array) is equal to the id of the previous reply.

To indicate that a reply is the end of the conversation add the following property:

Property	Type	Description
end	Boolean	The end of the conversation

A reply necessarily needs the following properties:

Replies Types

Send Text

Property	Type	Description
id	Integer	Reply id is used to link with parent
parent	Integer	Id of the reply parent or ids array [2, 3]. If it has no parent it is 0 by default
pattern	RegExp	Regular expression to match in lower case
message	String	Reply text message

Example

[
  {
    id: 1,
    parent: 0,
    pattern: /.*/, // Match with all text
    message: "Hi I am a Chatbot!",
  }
]

Send Buttons

Property	Type	Description
id	Integer	Reply id is used to link with parent
parent	Integer	Id of the reply parent or ids array [2, 3]. If it has no parent it is 0 by default
pattern	RegExp	Regular expression to match in lower case
message	String	Reply text message
description	String	Reply text subtitle
buttons	Array	Button object, look at the example

Example

[
  {
    id: 1,
    parent: 0,
    pattern: /.*/,
    message: "Hello!",
    description: "Can I help with something?",
    buttons: buttons([
      "Website",
      "LinkedIn",
      "Github",
    ]),
  }
]

Send List

Property	Type	Description
id	Integer	Reply id is used to link with parent
parent	Integer	Id of the reply parent or ids array [2, 3]. If it has no parent it is 0 by default
pattern	RegExp	Regular expression to match in lower case
message	String	Reply text message
description	String	Reply text subtitle
button	String	List button text
list	Array	List object, look at the example

Example

[
  {
    id: 1,
    parent: 0,
    pattern: /other country/,
    message: "Choice one country",
    description: "Choice one option!",
    button: "Countries list",
    list: list([
      "Argentina",
      "Belize",
      "Bolivia",
    ]),
  },
]

Send Link

Property	Type	Description
id	Integer	Reply id is used to link with parent
parent	Integer	Id of the reply parent or ids array [2, 3]. If it has no parent it is 0 by default
pattern	RegExp	Regular expression to match in lower case
message	String	Reply text message
link	String	URL of generated link preview

Example

[
  {
    id: 2,
    parent: 1, // Relation with id: 1
    pattern: /github/,
    message: "Check my Github repositories!",
    link: "https://github.com/jfadev",
  }
]

Send Image

Property	Type	Description
id	Integer	Reply id is used to link with parent
parent	Integer	Id of the reply parent or ids array [2, 3]. If it has no parent it is 0 by default
pattern	RegExp	Regular expression to match in lower case
image	Path / Object	Path or Object returned by remoteImg() funtion

Example

[
  {
    id: 1,
    parent: 0,
    pattern: /.*/, // Match all
    image: remoteImg("https://remote-server.com/menu.jpg"),
    // image: "./images/menu.jpg",
  }
]

Send Audio

Property	Type	Description
id	Integer	Reply id is used to link with parent
parent	Integer	Id of the reply parent or ids array [2, 3]. If it has no parent it is 0 by default
pattern	RegExp	Regular expression to match in lower case
audio	Path / Object	Path or Object returned by remoteAudio() funtion.

Example

[
  {
    id: 1,
    parent: 0,
    pattern: /.*/, // Match all
    audio: remoteAudio("https://remote-server.com/audio.mp3"),
    // audio: "./audios/audio.mp3",
  }
]

Forward Message

Property	Type	Description
id	Integer	Reply id is used to link with parent
parent	Integer	Id of the reply parent or ids array [2, 3]. If it has no parent it is 0 by default
pattern	RegExp	Regular expression to match in lower case
message	String	Reply text message
forward	String	Number where the message is forwarded

Example

[
    {
    id: 1,
    parent: 0,
    pattern: /forward/,
    message: "Text to forward",
    forward: "[email protected]", // forward this message to this number
  }
]

Helpers

Helper	Return	Description
buttons(buttonTexts)	Array	Generate buttons
remoteTxt(url)	String	Return a remote TXT file
remoteJson(url)	JSON	Return a remote JSON file
remoteImg(url)	Object	Return a remote Image file
remoteAudio(url)	Object	Return a remote Audio file
list(listRows)	Array	Generate list
inp(id, parents)	String	Return input string by reply id. Use in beforeReply, afterReply and beforeForward

Hooks

Property	Type	Description
beforeReply(from, input, output, parents, media)	Function	Inject custom code before a reply
afterReply(from, input, parents, media)	Function	Inject custom code after a reply
beforeForward(from, forward, input, parents, media)	Function	Inject custom code before a forward

Http Control Panel

With the control panel you can log in, start, stop or restart the bot and monitor the logs.

Set your username and password to access your control panel in file ./src/config.js

export const chatbotOptions = {
  httpCtrl: {
    port: 3000, // httpCtrl port (http://localhost:3000/)
    username: "admin",
    password: "chatbot"
  }
};

Use an nginx reverse proxy to publicly expose the http control panel (configuration example).

Examples

Edit your file ./src/conversations/conversation.js and create your custom conversation workflow.

Example 1

doc/examples/conversation1.js

import { buttons } from "../helpers";

/**
 * Chatbot conversation flow
 * Example 1
 */
export default [
  {
    id: 1,
    parent: 0,
    pattern: /hello|hi|howdy|good day|good morning|hey|hi-ya|how are you|how goes it|howdy\-do/,
    message: "Hello! Thank you for contacting me, I am a Chatbot 🤖 , we will gladly assist you.",
    description: "Can I help with something?",
    buttons: buttons([
      "Website",
      "Linkedin",
      "Github",
      "Donate",
      "Leave a Message",
    ]),
  },
  {
    id: 2,
    parent: 1, // Relation with id: 1
    pattern: /website/,
    message: "Visit my website and learn more about me!",
    link: "https://jordifernandes.com/",
    end: true,
  },
  {
    id: 3,
    parent: 1, // Relation with id: 1
    pattern: /linkedin/,
    message: "Visit my LinkedIn profile!",
    link: "https://www.linkedin.com/in/jfadev",
    end: true,
  },
  {
    id: 4,
    parent: 1, // Relation with id: 1
    pattern: /github/,
    message: "Check my Github repositories!",
    link: "https://github.com/jfadev",
    end: true,
  },
  {
    id: 5,
    parent: 1, // Relation with id: 1
    pattern: /donate/,
    message: "A tip is always good!",
    link: "https://jordifernandes.com/donate/",
    end: true,
  },
  {
    id: 6,
    parent: 1, // Relation with id: 1
    pattern: /leave a message/,
    message: "Write your message, I will contact you as soon as possible!",
  },
  {
    id: 7,
    parent: 6, // Relation with id: 6
    pattern: /.*/, // Match with all text
    message: "Thank you very much, your message will be sent to Jordi! Sincerely the Chatbot 🤖 !",
    end: true,
  },
];

Example 2

doc/examples/conversation2.js

import { buttons, remoteTxt, remoteJson } from "../helpers";

const customEndpoint = "https://jordifernandes.com/examples/chatbot";

/**
 * Chatbot conversation flow
 * Example 2
 */
export default [
  {
    id: 1,
    parent: 0,
    pattern: /.*/,
    message: "Hello! I am a Delivery Chatbot.",
    description: "Choice one option!",
    buttons: buttons([
      "See today's menu?",
      "Order directly!",
      "Talk to a human!",
    ]),
  },
  {
    id: 2,
    parent: 1, // Relation with id: 1
    pattern: /menu/,
    message: remoteTxt(`${customEndpoint}/menu.txt`),
    // message: remoteJson(`${customEndpoint}/menu.json`)[0].message,
    end: true,
  },
  {
    id: 3,
    parent: 1, // Relation with id: 1
    pattern: /order/,
    message: "Make a order!",
    link: `${customEndpoint}/delivery-order.php`,
    end: true,
  },
  {
    id: 4,
    parent: 1, // Relation with id: 1
    pattern: /human/,
    message: "Please call the following WhatsApp number: +1 206 555 0100",
    end: true,
  },
];

Example 3

doc/examples/conversation3.js

import fetch from "sync-fetch";
import { remoteImg } from "../helpers";

const customEndpoint = "https://jordifernandes.com/examples/chatbot";

/**
 * Chatbot conversation flow
 * Example 3
 */
export default [
  {
    id: 1,
    parent: 0,
    pattern: /.*/, // Match all
    message: "Hello! I am a Delivery Chatbot. Send a menu item number!",
  },
  {
    id: 2,
    parent: 0, // Same parent (send reply id=1 and id=2)
    pattern: /.*/, // Match all
    image: remoteImg(`${customEndpoint}/menu.jpg`),
  },
  {
    id: 3,
    parent: 1, // Relation with id: 1
    pattern: /\d+/, // Match any number
    message: "You are choice item number $input. How many units do you want?", // Inject input value ($input) in message
  },  
  {
    id: 4,
    parent: 2, // Relation with id: 2
    pattern: /\d+/, // Match any number
    message: "You are choice $input units. How many units do you want?",
    // Inject custom code or overwrite output 'message' property before reply
    beforeReply(from, input, output, parents) {
      // Example check external api and overwrite output 'message'
      const response = fetch(
        `${customEndpoint}/delivery-check-stock.php/?item=${input}&qty=${parents.pop()}`
      ).json();
      return response.stock === 0
        ? "Item number $input is not available in this moment!"
        : output;
    },
    end: true,
  },
];

Example 4

doc/examples/conversation4.js

import { remoteImg } from "../helpers";

const customEndpoint = "https://jordifernandes.com/examples/chatbot";

/**
 * Chatbot conversation flow
 * Example 4
 */
export default [
  {
    id: 1,
    parent: 0,
    pattern: /.*/, // Match all
    message: "Image local and remote! Send [local] or [remote]",
  },
  {
    id: 2,
    parent: 1,
    pattern: /local/, 
    image: "./images/image1.jpg",
    end: true,
  },
  {
    id: 3,
    parent: 1,
    pattern: /remote/, 
    image: remoteImg(`${customEndpoint}/image1.jpg`),
    end: true,
  },
];

Example 5

doc/examples/conversation5.js

import { remoteImg } from "../helpers";

const customEndpoint = "https://jordifernandes.com/examples/chatbot";

/**
 * Chatbot conversation flow
 * Example 5
 */
export default [
  {
    id: 1,
    parent: 0,
    pattern: /.*/, // Match all
    message: "Audio local and remote! Send [local] or [remote]",
  },
  {
    id: 2,
    parent: 1,
    pattern: /local/, 
    audio: "./audios/audio1.mp3",
    end: true,
  },
  {
    id: 3,
    parent: 1,
    pattern: /remote/, 
    audio: remoteAudio(`${customEndpoint}/audio1.mp3`),
    end: true,
  },
];

Example 6

doc/examples/conversation6.js

import fetch from "sync-fetch";

const customEndpoint = "https://jordifernandes.com/examples/chatbot";

/**
 * Chatbot conversation flow
 * Example 6
 */
export default [
  {
    id: 1,
    parent: 0,
    pattern: /.*/, // Match all
    message: "",
    // Inject custom code or overwrite output 'message' property before reply
    beforeReply(from, input, output, parents) {
      // Get reply from external api and overwrite output 'message'
      const response = fetch(`${customEndpoint}/ai-reply.php/?input=${input}`).json();
      return response.message;
    },
    end: true,
  },
];

Example 7

doc/examples/conversation7.js

import fetch from "sync-fetch";

const customEndpoint = "https://jordifernandes.com/examples/chatbot";

/**
 * Chatbot conversation flow
 * Example 7
 */
export default [
  {
    id: 1,
    parent: 0,
    pattern: /.*/, // Match all
    message: "Hello!",
    // Inject custom code after reply
    afterReply(from, input, parents) {
      // Send WhatApp number to external api
      const response = fetch(`${customEndpoint}/number-lead.php/`, {
        method: "POST",
        body: JSON.stringify({ number: from }),
        headers: { "Content-Type": "application/json" },
      }).json();
      console.log('response:', response);
    },
    end: true,
  },
];

Example 8

doc/examples/conversation8.js

import { buttons, inp } from "../helpers";

/**
 * Chatbot conversation flow
 * Example 8
 */
export default [
  {
    id: 1,
    parent: 0,
    pattern: /.*/,
    message: "Choice one option",
    description: "choice option:",
    buttons: buttons(["Option 1", "Option 2"]),
  },
  {
    id: 2,
    parent: 1,
    pattern: /.*/,
    message: "We have received your request. Thanks.\n\n",
    beforeReply(from, input, output, parents) {
      output += `Your option: ${inp(2, parents)}`;
      return output;
    },
    forward: "[email protected]", // default number or empty
    beforeForward(from, forward, input, parents) { // Overwrite forward number
      switch (inp(2, parents)) { // Access to replies inputs by id
        case "option 1":
          forward = "[email protected]";
          break;
        case "option 2":
          forward = "[email protected]";
          break;
        default:
          forward = "[email protected]";
          break;
      }
      return forward;
    },
    end: true,
  },
];

Example 9

doc/examples/conversation9.js

/**
 * Chatbot conversation flow
 * Example 9
 */
export default [
  {
    id: 1,
    parent: 0,
    pattern: /.*/, // Match all
    message: "",
    // Inject custom code or overwrite output 'message' property before reply
    beforeReply(from, input, output, parents, media) {
      if (media) {
        console.log("media buffer", media.buffer);
        return `You send file with .${media.extension} extension!`;
      } else {
        return "Send a picture please!";
      }
    },
    end: true,
  },
];

Advanced

Multiple Conversation Flows

Edit ./src/main.js file.

import { session } from "./core";
import info from "./conversations/info";
import delivery from "./conversations/delivery";

session("chatbotSession", info);
session("chatbotSession", delivery);

Multiple Accounts

Edit ./src/main.js file.

import { session } from "./core";
import commercial from "./conversations/commercial";
import delivery from "./conversations/delivery";

session("commercial_1", commercial);
session("commercial_2", commercial);
session("delivery", delivery);

Edit ./src/httpCtrl.js file.

import { httpCtrl } from "./core";

httpCtrl("commercial_1", 3000);
httpCtrl("commercial_2", 3001);
httpCtrl("delivery", 3002);

Testing

Unit tests writes with jest

$ yarn test

Test you conversation flow array structure with conversation.test.js file as example.

$ yarn test src/conversations/conversation  

Troubleshooting

Attention: Do not log in to whatsapp web with the same account that the chatbot uses. This will make the chatbot unable to hear the messages.

Attention: You need a whatsapp account for the chatbot and a different account to be able to talk to it.

Attention: Does not work with WhatsApp multi-device (beta). Disable it on your device.

Donate

https://jordifernandes.com/donate/

License

MIT License

Contributing

Pull requests are welcome :)

Contributors

• Jordi Fernandes (@jfadev)