server.js

const express = require("express");
const request = require("request-promise");
const app = express();

const PORT = process.env.PORT || 5000;
// const apiKey = "b02a399e7d0cdafd8f6dfe43ba8d9e76"
// const baseUrl = `http://api.scraperapi.com?api_key=${apiKey}&autoparse=true`;

const generateScraperUrl = (api_key) =>
  `http://api.scraperapi.com?api_key=${api_key}&autoparse=true`;

app.use(express.json());
app.get("/", (req, res) => {
  res.send("WELCOME TO THE AMAZON SCRAPPER API");
});

// get product details
app.get("/product/:productid", async (req, res) => {
  const { productid } = req.params;
  const { api_key } = req.query;
  try {
    const response = await request(
      `${generateScraperUrl(
        api_key
      )}&url=https://www.amazon.com/dp/${productid}`
    );
    res.json(JSON.parse(response));
    //   the json.parse will make the result to be in json format
  } catch (err) {
    console.log(err);
  }
});

// get product reviews
app.get("/product/:productid/reviews", async (req, res) => {
  const { productid } = req.params;
  const { api_key } = req.query;
  try {
    const response = await request(
      `${generateScraperUrl(api_key)}&url=https://www.amazon.com/product-reviews/${productid}`
    );
    res.json(JSON.parse(response));
    //   the json.parse will make the result to be in json format
  } catch (err) {
    console.log(err);
  }
});

// get product offers
app.get("/product/:productid/offers", async (req, res) => {
  const { productid } = req.params;
  const{api_key} = req.query
  try {
    const response = await request(
      `${generateScraperUrl(api_key)}&url=https://www.amazon.com/gp/offer-listing/${productid}`
    );
    res.json(JSON.parse(response));
    //   the json.parse will make the result to be in json format
  } catch (err) {
    console.log(err);
  }
});

// implementing a search functionality
app.get("/search/:searchQuery", async (req, res) => {
  const { searchQuery } = req.params;
  const{api_key} = req.query
  try {
    const response = await request(
      `${generateScraperUrl(api_key)}&url=https://www.amazon.com/s?k=${searchQuery}`
    );
    res.json(JSON.parse(response));
    //   the json.parse will make the result to be in json format
  } catch (err) {
    console.log(err);
  }
});
app.listen(PORT, () => {
  console.log(`server is running on localhost: ${PORT}`);
});