google-chat-webhook

An SDK for Google Chats Incoming Webhooks. Enables you to notify Google Chat chatrooms with simple text message threads or high fidelity interactive card interfaces.

A sample text message thread. Formatting can be done just as in user interface.
A sample interactive card thread. Embed images, basic html text blocks, rows of buttons and more advanced keyValue widgets.
Other sample card with keyValue widget.

Table of contents

1. Getting started
2. API
3. Sample
4. Sources

1. Getting started

• Create or select an existing chatroom in Google Chat
• Via the settings button choose Configure Webhooks
• Create new webhook
• Copy webhooks new URL
• Run the sample

WEBHOOK_URL=${YOUR_WEBHOOK_URL_HERE} npm run sample

• Explore the sample code in ./sample/index

2. API

• Sending text message

await client.sendText("This is a basic text thread.");

• Formatting text helper

// ~_*block struck italic text*_~
const formatted = client.getFormattedMarkup(`bold struck italic text`, {
  bold: true,
  italic: true,
  strikethrough: true,
});

// `some inline code`
const monospace = client.getFormattedMarkup(`some inline code`, { monospace: true });

// ```
// multi
// line
// code
// ```
const monospaceBlock = client.getFormattedMarkup(`multi\nline\ncode`, { monospaceBlock: true });

• Formatting mention helper

// <users/all>
const AT_ALL = client.getMentionMarkup(MentionType.ALL);
// <users/sample-user-id>
const userSpecificMention = client.getMentionMarkup(MentionType.USER_SPECIFIC, `sample-user-id`);

Given you somehow know the users ID you may use the syntax described in 'Messages that @mention specific users'

• Formatting link helper

// <https://sample.com/|Sample Website>
const link = client.getLinkMarkup(`https://sample.com/`, `Sample Website`);
// <https://sample.com/|https://sample.com/>
const link = client.getLinkMarkup(`https://sample.com/`);

• Sending card message
  See sample below.

const card: CardMessage = { ... };
await googleChat.sendCard(card);

3. Sample

import { GoogleChatWebhook } from "google-chat-webhook";

const url = process.env.WEBHOOK_URL;
if (!url) {
  throw new Error("Environment variable 'WEBHOOK_URL' must be set.");
}
const client = new GoogleChatWebhook({ url });

/**
 * Send a simple text message to hangouts chat. Formatting is as
 * within the UI.
 * *bold text*
 * _italic text_
 * ~strike text~
 * `inline code`
 * ```
 *   multi-line
 *   code
 * ```
 */
const simpleMessage: GoogleChatWebhook.SimpleTextMessage = `*Bold text*\n\n`inline-code`\n_Italic text_\nUnformatted text\n`;
await client.sendTextMessage(simpleMessage);

/**
 * Send a more complex card message.
 */
 const card: CardMessage = {
    cards: [
      {
        header: {
          title: `Unsplash daily bot`,
          subtitle: `Fresh inspiration every day`,
          imageUrl: `https://www.appgefahren.de/wp-content/uploads/2020/01/unsplash-icon.jpg`,
          imageStyle: CardImageStyle.AVATAR,
        },
        sections: [
          {
            widgets: [
              {
                image: {
                  imageUrl: `https://images.unsplash.com/photo-1541960071727-c531398e7494?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1350&q=80`,
                },
              },
              {
                buttons: [
                  {
                    imageButton: {
                      icon: BuiltInIcon.BOOKMARK,
                      onClick: {
                        openLink: { url: `https://unsplash.com/photos/wxWulfjN-G0/download?force=true&w=640` },
                      },
                    },
                  },
                  {
                    textButton: {
                      text: `Explore more...`,
                      onClick: {
                        openLink: { url: `https://unsplash.com/` },
                      },
                    },
                  },
                ],
              },
            ],
          },
        ],
      },
    ],
  };
  await googleChat.sendCard(card);

Sources

Google Chat API documentation:

• Use incoming webhooks
• Card formatting messages
• Simple text messages