Story Wall

A retailer offers a rewards program to its customers awarding points based on each recorded purchase as follows: For every dollar spent over $50 on the transaction, the customer receives one point. In addition, for every dollar spent over $100, the customer receives another point.

Ex: for a $120 purchase, the customer receives (120 - 50) x 1 + (120 - 100) x 1 = 90 points

Customer table

Id	Name
1001	Mayur
1002	Mack
1003	Jack
1004	Rose

Transactions table

Id	Amount	Customer Id	Transaction Date
001	15	1001	2022-05-20 10:30:25
002	60	1001	2022-05-21 10:30:25
003	105	1001	2022-05-22 10:30:25
004	5	1001	2022-06-20 10:30:25
005	55	1001	2022-06-25 10:30:25
006	70	1001	2022-06-26 10:30:25
007	90	1001	2022-06-29 10:30:25
008	10	1002	2022-05-21 10:30:2
009	45	1002	2022-05-22 10:30:25
010	40	1002	2022-05-23 10:30:25
011	30	1002	2022-05-24 10:30:25
012	100	1003	2022-06-25 10:30:25
013	50	1003	2022-06-27 10:30:25
014	150	1004	2022-07-20 10:30:25

These values are used in the code and in the following examples too.

Calculated Reward Point(output)

Name	Points
Mayur	135
Mack	0
Jack	50
Rose	150

Requirements

The project requires Java 1.8 or higher.

The project makes use of Gradle and uses the Gradle wrapper, which means you don't need Gradle installed.

Useful Gradle commands

The project makes use of Gradle and uses the Gradle wrapper to help you out carrying some common tasks such as building the project or running it.

List all Gradle tasks

List all the tasks that Gradle can do, such as build and test.

$ ./gradlew tasks

Build the project

Compiles the project, runs the test and then creates an executable JAR file

$ ./gradlew build

Run the application using Java and the executable JAR file produced by the Gradle build task. The application will be listening to port 8080.

$ java -jar build/libs/reward-program.jar

Run the tests

There are two types of tests, the unit tests and the functional tests. These can be executed as follows.

• Run unit tests only

  $ ./gradlew test

• Run functional tests only

  $ ./gradlew functionalTest

• Run both unit and functional tests

  $ ./gradlew check

Run the application

Run the application which will be listening on port 8080.

$ ./gradlew bootRun

API

Below is a list of API endpoints with their respective input and output. Please note that the application needs to be running for the following endpoints to work. For more information about how to run the application, please refer to run the application section above.

Health Check

Endpoint

GET /reward-point/health-check

Example of body

Service is Up

Get Reward Points

Endpoint

GET /reward-point/fetch

Parameters

Parameter	Description
month	optional query parameter, by default it is 3 month

Retrieving readings using CURL

$ curl "http://localhost:8080/reward-point/fetch"

Example output

[
  {
    "name": "Rose",
    "rewardPoints": 150
  },
  {
    "name": "Jack",
    "rewardPoints": 50
  },
  {
    "name": "Mack",
    "rewardPoints": 0
  },
  {
    "name": "Mayur",
    "rewardPoints": 135
  }
]