ATM API

ATM API is the implementation on sample API required for ATM to withdraw, deposit and to view the account balance.

Pre-requisite

This ATM API is using Postgres as a database. So to run this application it is required to have postgres is installed on machine. Postgres will running on localhost with default port

postgres-URL: localhost:5432
username: postgres
password: postgres

URL endpoints

1. Get Account Balance

GET: localhost:8080/api/account/balance/{accountNumber}/{PIN}

2. Withdraw Money from Bank

POST: localhost:8080/api/account/withdraw

3. Deposit Money in bank account

POST: localhost:8080/api/account/deposit

Note: Both the post methods has to be sent with json body as given below.

{
	"account_number": "1234567891234",
	"pin":"1234",
	"amount": 100
}

Current Implementation

• It has three REST endpoints
• Currently it is with single database
• Unit TestCases are added only for controller
• Not capturing any kind of transactional information

Improvements can be done

• Store pin in hashed form, same as passwords
• Add Multi-tenancy for database, so that each bank data will be present in separate schema/database.
• Add Unit test for Service by mocking repository
• Add Integration test by setting H2 database with scope for Test. Including sample data.