Google Drive Folder Watcher Add-On

Google Drive Add-On Folder Watcher Google Apps Script to get notifications by Slack Webhook

Setup Add-On Manually

• First, create new standalone app from https://script.google.com/
• copy and paste both Code.js and appsscript.json
• you might want to change logoUrl in appsscript.json
  • the default icon url is from the official sample code
• In the Apps Script editor, Click Deploy > Test deployments > Install
  • cf. official document
  • https://developers.google.com/workspace/add-ons/how-tos/testing-gsuite-addons
• open https://drive.google.com/drive/my-drive
  • you should see the Add-On icon at right side of the page

Setup Folder Watcher Timer Trigger

• fill in the Folder ID and Slack Webhook URL and save the config
  • note Slack Webhook URL here is the traditional one without token
• push "TRY NOW" to test and see if it works fine
• turn on the trigger if all looks good
• you can update the timer to less than 1 hour
  • once per hour is system default quota programmatically
  • but you can overwrite it manually (say every one minute)
  • https://developers.google.com/apps-script/guides/triggers/installable#time-driven_triggers

Setup Google Apps Script Dev Tools

node --version
v14.15.5

npm --version
7.9.0

# https://github.com/google/clasp
npm init -y
npm install --save-dev @google/clasp

npx clasp --version
2.3.0

clasp login
clasp login --status

Setup Add-On by using CLI

• Now using Apps Script editor in JavaScript is recommended
  • Apps Script editor is significantly improved recently
  • and when you use TypeScript, you cannot use Apps Script editor
  • So now you don't need local development in TypeScript
• CLI clasp is useful to pull the code and push to GitHub for version control
• You should be able to use the following commands.
  • cf. official document https://github.com/google/clasp

# when you want to start new project from CLI
clasp create --type standalone --title "Title" --rootDir ./src
# when you start new project from https://script.google.com/
# https://developers.google.com/apps-script/guides/standalone
clasp clone --rootDir /src

# you should have proper .clasp.json by create or clone

clasp open

# update local files from remote
clasp pull
# update remote if you changed the code locally
clasp push