This simple program monitorizes a web page for changes and send a message if page has changed within a css selector.
Done with Puppeteer as scrapping tool capable of handling dynamic web rendering.
Some Environment variables are required. Create a .env file containing these environment variables:
- TELEGRAM_BOT_TOKEN: The token of your Telegram bot.
- TELEGRAM_CHAT_ID: The chat id where you want to send messages. Send a message from Telegram to your bot and go to https://api.telegram.org/bot[TELEGRAM_BOT_TOKEN]/getUpdates to get this.
- SCRAPE_URL: The url to monitor
- SCRAPE_SELECTOR: The selector (page fragment) to monitor
You can just use npm ci && npm start if you want to run it locally. Otherwise a docker file has been included.
To build the image run:
docker build . -t scrapper-notifier
To run the image once built:
docker run scrapper-notifier