When receiving API request for a reviewing systems, this service will perform following task:-

• Accepts reviews and stores them
• Allows to fetches reviews
• Reviews can be filtered by date, store type or rating.
• All filters are optional; fetch all reviews if no filters are applied.
• Allows to get average monthly ratings per store.
• Allows to get total ratings for each category. Meaning, how many 5*, 4*, 3* and so

Intially reviews data is added into the mongo DB using alexa,json file and also POST request to add individual review data.

• all services must use semantic versioning

• npm install
• runs unit tests

• straight forward express framework used here
  • init in app.js
• express framework used to simple api exposure
  • expose API in controller/*

npm run test
or
yarn test

• Add reviews using POST request (Implemented without any authentication method) API - POST http://localhost:3030/addReviews Request Body: [ { "review": "Since your new update I can't add anything to a shopping list or to do list from my apple 16", "author": "Mjay1", "review_source": "Mjay1", "rating": 1, "title": "Mjay1", "product_name": "Amazon Alexa", "reviewed_date": "2017-05-23T00:00:00.000Z" } ]

• To make use of the existing alexa.json created a '/insert' POST request which will read a data from alexa.json and then insert the data to mongoDB API - POST http://localhost:3030/insert

• Default response if no params are added:- API- GET http://localhost:3030/reviewBy Response:- [{ review: "No point in stating the obvious, app is garbage right now. I like Alexa but find it hard to believe Bezos uses this glitchy app.", author: "Reef", review_source: "iTunes", rating: 1, title: "Does Jeff Bezos use this?", product_name: "Amazon Alexa", reviewed_date: "2017-12-18T22:04:04.000Z" }]

• Response GET review by date API - GET http://localhost:3030/reviewBy?date=2017-12-18 Response:- [{ review: "No point in stating the obvious, app is garbage right now. I like Alexa but find it hard to believe Bezos uses this glitchy app.", author: "Reef", review_source: "iTunes", rating: 1, title: "Does Jeff Bezos use this?", product_name: "Amazon Alexa", reviewed_date: "2017-12-18T22:04:04.000Z" }]

• Response GET review by rating, it provides total review count for individual ratings like 5*, 4*, 3*, 2*... API - GET http://localhost:3030/reviewBy?rating=5 Response:- [{ Total_Review_Count: 1437 }, { review: "No point in stating the obvious, app is garbage right now. I like Alexa but find it hard to believe Bezos uses this glitchy app.", author: "Reef", review_source: "iTunes", rating: 5, title: "Does Jeff Bezos use this?", product_name: "Amazon Alexa", reviewed_date: "2017-12-18T22:04:04.000Z" }]

• Response GET review by store API - GET http://localhost:3030/reviewBy?store=GooglePlayStore Response:- [{ review: "No point in stating the obvious, app is garbage right now. I like Alexa but find it hard to believe Bezos uses this glitchy app.", author: "Reef", review_source: "GooglePlayStore", rating: 5, title: "Does Jeff Bezos use this?", product_name: "Amazon Alexa", reviewed_date: "2017-12-18T22:04:04.000Z" }]

• Response GET Average monthly rating API - GET http://localhost:3030/averageStoreReview?store=GooglePlayStore&date=2017-11-21 Response:- { store: "GooglePlayStore", Avarage_Monthly_rating: 3, period: { start: "2017-10-22T00:00:00.000Z", end: "2017-11-22T00:00:00.000Z" } }

• npm test

Result:- Test Suites: 3 passed, 3 total
Tests: 10 passed, 10 total
Snapshots: 2 obsolete, 1 written, 3 passed, 4 total Time: 4.587 s