Line Bot Plugin Integration Guide

Author: @kevintsai1202 (https://github.com/kevintsai1202/difyplugin.git) Version: 0.0.5 Type: extension

What's Changed

0.0.5

1. Fix/New Feature: When group_id (LINE group chat), room_id (chat room) exist, Session uses group_id or room_id to save conversation_id. The effect is that group chats on Dify will maintain the same conversation. thanks to [@ryantsai](https://github.com/ryantsai]
2. New Feature: When the message contains markdown, send to LINE as FlexMessage. Can be adjusted in Plugin parameters, default is off. thanks to [@ryantsai](https://github.com/ryantsai]
3. New Feature: Image upload uses Dify API URL parameterization, supports community edition scenarios. thanks to [@ryantsai](https://github.com/ryantsai]

0.0.4

1. Add the /clearconversationhistory command, thanks to [@ryantsai](https://github.com/ryantsai] When a user enters it on LINE, it will clear the session storage, and the next message sent to Dify will start a brand-new, clean session.
2. Image message handling, thanks to [@ryantsai](https://github.com/ryantsai] Generate responses based on the uploaded images.
3. Message Handling Enhancement, thanks to [@ryantsai](https://github.com/ryantsai] Added support for Markdown image URLs. [url](http://xxx.xxx)
4. Handle image content in responses[@ryantsai](https://github.com/ryantsai] Ensure that generated images are properly displayed on LINE.
5. Identifier Retrieval Support, thanks to [@jimcchi](https://github.com/jimcchi] Capture user_id, room_id, and group_id from incoming messages.

Plugin Overview

The Line Bot plugin integrates the Dify chat workflow application with the Line Official Account Messaging API. It enables users to interact with AI through a Line Official Account. The plugin only processes message reception and responses; it does not store any user information.

Setup Steps

Follow these steps to install and configure the Line Bot plugin:

1. Create a Provider and Messaging API Channel Go to the LINE Developers website。

2. Copy the Channel Secret and Channel Access Token of the Messaging API

• Navigate to the Basic settings page.
• Copy the Channel Secret (if it hasn’t been generated yet, click "Issue" to create one).

- Navigate to the Messaging API page. - Enable Use Webhook. - Copy the Channel Access Token (if it hasn’t been generated yet, click "Issue" to create one).

3. Set Up the Dify Line Bot Endpoint

• Set an Endpoint Name.
• Paste the Channel Secret and Channel Access Token.
• Obtain the API Key for the Dify workflow.(option)
• Set the image variable, and ensure that the workflow also configures the same file variable.
• Select a Chat Workflow.

4. Save and Copy the Line Bot Webhook URL

5. Set the Webhook URL and Verify

• Return to the Messaging API page on the LINE Developers platform.
• Paste the Webhook URL obtained in the previous step.
• Verify the Line Bot.

6. Use Line to add the Line Official Account and start chatting with AI.

/clearconversationhistory

Describe the image

Generation image Sample ChatFlow on Dify using gpt-image-1 for generation(DSL file can be imported into Dify)

LinebotImageChatSample.zip

FlexMessage