Step 1:
Install NodeJs with NPM, details: https://nodejs.org/en/download/
Step 2:
This project is based upon this repository, you need to install google-play-scraper. This script overcomes the limitation of google-play-scraper which scraps reviews page by page (i.e., maximum of 40 reviews)
npm install google-play-scraper
Step 3:
Create a file named app.txt. This file will contain all the applications for that you want to extract the reviews
Sample contain:
com.amazon.mShop.android.shopping
com.android.chrome
Step 4: Execute following command:
node google_play_all_reviews_scraper.js
The above code will copy all the reviews and details of the application in reviews/ and details/ folder respectively. I have not tested this script for applications with millions of comments.
Note: reviews/ and details/ directories will not be created if does not exists, make sure you have the directory in the root of this project.
Cheers! Enjoy programming :)