Pre-requisites:

• Line app
• Github
• Heroku

Tech Stack Code:

• PHP 7.2
• Laravel 5.5
• Guzzle

Steps:

1. Login/Sign up
2. Create a LINE@ account with enabled Messaging API on Line Business Center
3. Configure your bot
4. Develop your bot
5. Deploy your bot

1- Login/Sign up:

If you have Line account then move to next step else sign up for an account and make one.

2- Create a LINE@ account with enabled Messaging API:

• In the Line Business Center, select Messaging API under the Service category at the top of the page.
• Select either Start using Messaging API.
• Enter the required information for your new LINE@ account. Confirm the information.
• Click the LINE@ MANAGER button at the bottom of the confirmation page.
• Go to the settings and then Bot Settings page of the LINE@ Manager then click Enable API.

3- Configure your bot:

• In the LINE@ Manager, go to the Bot Settings, which can be found under "Settings" on the side menu.
• To reply to messages using webhooks, select Allow for "Use webhooks" under "Request Settings"
• To participate in group chats, select Allow for the "Allow bots to join group chats" option.
• To send a customized response message to user messages, select Allow for the "Auto Reply Message" option.
• To send a customized greeting message when users add your account as a friend, select Allow for the "Greeting Message" option

Go to Accounts option at top of page and open LINE Developers from there

• To issue a Channel access token for accessing APIs, click ISSUE for the "Channel access token" item.
• Click EDIT and set a webhook URL for your Channel.

After following these steps your account is ready and you are good to go to develop your bot.

4- Develop your bot:

You can develop your own bot or you can fork this repository and deploy it to heroku.

5- Deploy your bot:

To deploy your bot to heroku you need an account on Heroku and after making an account make an app

You can see how to deploy on Heroku blog

After making app copy this link and paste it in webhook url in Line channel console page from where we got channel access token.

            https:{your_heroku_app_name}.herokuapp.com/webhook

And now you application already active.

Reference

• Documentation from Line Susi Node JS