JavaScript quick-start project for amazon.in price tracking.

🛠 Tools required to develop the price-tracker

• NodeJs
• Puppeteer
• SendGrid/Mail
• CronJob

🤝 Requirements

In order to utilise this project you need to have the following installed locally:

• nodejs
• npm
• puppeteer
• cheerio
• sendgrid/mail
• cron

To install the dependencies locally run:

npm install dependencies

In order for the price tracking to pass, you will need to configure the script with the following parameters:

• Setup/Replace the to and from email addresses in the sendEmail() function

function sendEmail(subject, body) {
  const email = {
    to: "*****@yourmail.com",
    from: "*****@yourmail.com",
    subject: subject,
    text: body,
    html: body,
  };
  return sgMail.send(email);
}

• Setup/Replace the sendgrid api key from the sendgrid account, and place it locally in a .env file.

SENDGRID_API_KEY= *****

• Setup/Replace the cron job with desired time interval in the startTracking() function

async function startTracking() {
  const page = await configureBrowser();

  let job = new CronJob(
    "* */30 * * * *",
    function () {
      //runs every 30 minutes in this config
      checkPrice(page);
    },
    null,
    true,
    null,
    null,
    true
  );
  job.start();
}

👷‍♂️ Usage

The project is basically a Nodejs script that can be run from the command line. In order to run this locally you need to clone the project and set up requirements and run the command:

node track <amazon.in-url-to-track> <price-threshold>

• amazon.in-url-to-track is the url of the product you want to track
• price-threshold is the price limit you want to track for the product

📹 Demo Video

🤖 Template Repository

Price Tracker