Delete a reaction

This guide explains how to delete a reaction to a message—like 👍, 🚲, and 🌞—with the Google Chat API. Deleting a reaction doesn't delete the message.

Prerequisites

Python

Python 3.6 or greater
The pip package management tool
The Google client libraries for Python. To install them, run the following command in your command line interface:
```
pip3 install --upgrade google-api-python-client google-auth-httplib2 google-auth-oauthlib oauth2client
```
A published Chat app. To create and publish a Chat app, see Build a Google Chat app.
Authorization configured for the Chat app. Deleting a reaction requires User authentication with the chat.messages.reactions or chat.messages authorization scope.

Delete a reaction

To delete a reaction to a message, pass the following in your request:

Specify the chat.messages.reactions or the chat.messages authorization scope.
Call the delete method on the Reaction resource.
Set name to the resource name of the reaction to delete.

The following example deletes the 😀 reaction to a message:

Python

In your working directory, create a file named chat_reaction_delete.py.

Include the following code in chat_reaction_delete.py:

import os.path

from google.auth.transport.requests import Request
from google.oauth2.credentials import Credentials
from google_auth_oauthlib.flow import InstalledAppFlow
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError

# Define your app's authorization scopes.
# When modifying these scopes, delete the file token.json, if it exists.
SCOPES = ["https://www.googleapis.com/auth/chat.messages.reactions"]

def main():
    '''
    Authenticates with Chat API via user credentials,
    then deletes a reaction to a message.
    '''

    # Authenticate with Google Workspace
    # and get user authorization.
    flow = InstalledAppFlow.from_client_secrets_file(
                      'client_secrets.json', SCOPES)
    creds = flow.run_local_server()

    # Build a service endpoint for Chat API.
    chat = build('chat', 'v1', credentials=creds)

    # Use the service endpoint to call Chat API.
    result = chat.spaces().messages().reactions().delete(

        # The reaction to delete.
        #
        # Replace SPACE with a space name.
        # Obtain the space name from the spaces resource of Chat API,
        # or from a space's URL.
        #
        # Replace MESSAGE with a message name.
        # Obtain the message name from the response body returned
        # after creating a message asynchronously with Chat REST API.
        #
        # Replace REACTION with a reaction name.
        # Obtain the reaction name from the reaction resource of Chat API.
        name = 'spaces/SPACE/messages/MESSAGE/reactions/REACTION'

    ).execute()

if __name__ == '__main__':
    main()

In the code, replace the following:
- SPACE: a space name, which you can obtain from the spaces.list method in the Chat API, or from a space's URL.
- MESSAGE: a message name, which you can obtain from the response body returned after creating a message asynchronously with Chat API, or with the custom name assigned to the message at creation.
- REACTION: a reaction name, which you can obtain from the spaces.messages.reactions.list method in the Chat API or from the response body returned after creating a reaction asynchronously with the Chat API.
In your working directory, build and run the sample:
```
python3 chat_reaction_delete.py
```

If successful, the response body is empty, which indicates that the reaction is deleted.