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Summary of Changes

Hello @PierrickVoulet, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request delivers a new set of examples demonstrating how to leverage Google Chat webhooks through Google Apps Script. The solution provides clear, functional code snippets for both basic message posting and more advanced threaded replies, aiming to simplify the integration process for developers looking to automate notifications or interactions within Google Chat spaces. The inclusion of a README file ensures users can quickly find relevant official documentation.

Highlights

  • New Google Chat Webhook Solution: Introduced a new solution directory solutions/webhook-chat-app containing examples for sending messages to Google Chat via webhooks using Google Apps Script.
  • Basic Webhook Example: Added webhook.gs which demonstrates how to send a simple text message to a Google Chat space using an incoming webhook.
  • Threaded Reply Webhook Example: Included thread-reply.gs providing an example of sending a message that attempts to reply to an existing thread in Google Chat, with a fallback option to create a new thread if the specified thread key is not found.
  • Documentation Reference: A README.md file was added to guide users and link to the official Google Chat incoming webhooks documentation for further details.
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@PierrickVoulet PierrickVoulet merged commit 6cea3e6 into googleworkspace:main Dec 9, 2025
9 of 31 checks passed
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Code Review

This pull request introduces webhook examples for Google Chat. My review identified a critical security vulnerability in both new script files (thread-reply.gs and webhook.gs). Sensitive information such as API keys and tokens are hardcoded in the source code. I've provided suggestions to refactor the code to use Google Apps Script's Properties Service for securely managing these secrets, preventing them from being exposed in version control.

Comment on lines +20 to +32
const url = "https://chat.googleapis.com/v1/spaces/SPACE_ID/messages?key=KEY&token=TOKEN&messageReplyOption=REPLY_MESSAGE_FALLBACK_TO_NEW_THREAD"
const options = {
"method": "post",
"headers": {"Content-Type": "application/json; charset=UTF-8"},
"payload": JSON.stringify({
"text": "Hello from Apps Script!",
"thread": {
"threadKey": "THREAD_KEY_VALUE"
}
})
};
const response = UrlFetchApp.fetch(url, options);
console.log(response);
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security-critical critical

Hardcoding sensitive information like API keys and tokens directly in the source code is a major security risk. If this code is committed to a version control system, these secrets will be exposed. It is strongly recommended to store these values in a secure location, such as Google Apps Script's Properties Service, and retrieve them at runtime. This prevents accidental exposure of credentials. You can find more information on how to use Properties Service here.

  const scriptProperties = PropertiesService.getScriptProperties();
  const spaceId = scriptProperties.getProperty('SPACE_ID');
  const key = scriptProperties.getProperty('KEY');
  const token = scriptProperties.getProperty('TOKEN');

  if (!spaceId || !key || !token) {
    console.error('Webhook URL parameters (SPACE_ID, KEY, TOKEN) must be set in script properties.');
    return;
  }

  const url = `https://chat.googleapis.com/v1/spaces/${spaceId}/messages?key=${key}&token=${token}&messageReplyOption=REPLY_MESSAGE_FALLBACK_TO_NEW_THREAD`;
  const options = {
    "method": "post",
    "headers": {"Content-Type": "application/json; charset=UTF-8"},
    "payload": JSON.stringify({
      "text": "Hello from Apps Script!",
      "thread": {
        "threadKey": "THREAD_KEY_VALUE"
      }
    })
  };
  const response = UrlFetchApp.fetch(url, options);
  console.log(response);

Comment on lines +20 to +29
const url = "https://chat.googleapis.com/v1/spaces/SPACE_ID/messages?key=KEY&token=TOKEN"
const options = {
"method": "post",
"headers": {"Content-Type": "application/json; charset=UTF-8"},
"payload": JSON.stringify({
"text": "Hello from Apps Script!"
})
};
const response = UrlFetchApp.fetch(url, options);
console.log(response);
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Choose a reason for hiding this comment

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security-critical critical

Hardcoding sensitive information like API keys and tokens directly in the source code is a major security risk. If this code is committed to a version control system, these secrets will be exposed. It is strongly recommended to store these values in a secure location, such as Google Apps Script's Properties Service, and retrieve them at runtime. This prevents accidental exposure of credentials. You can find more information on how to use Properties Service here.

  const scriptProperties = PropertiesService.getScriptProperties();
  const spaceId = scriptProperties.getProperty('SPACE_ID');
  const key = scriptProperties.getProperty('KEY');
  const token = scriptProperties.getProperty('TOKEN');

  if (!spaceId || !key || !token) {
    console.error('Webhook URL parameters (SPACE_ID, KEY, TOKEN) must be set in script properties.');
    return;
  }

  const url = `https://chat.googleapis.com/v1/spaces/${spaceId}/messages?key=${key}&token=${token}`;
  const options = {
    "method": "post",
    "headers": {"Content-Type": "application/json; charset=UTF-8"},
    "payload": JSON.stringify({
      "text": "Hello from Apps Script!"
    })
  };
  const response = UrlFetchApp.fetch(url, options);
  console.log(response);

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