Backend for a simple "banking" application

• Client should be able to sign up with email & password
• Client should be able to deposit money
• Client should be able to withdraw money
• Client should be able to see the account balance and statement

Database structure, backend and REST API.

Technology stack

• Java 8
• Spring Boot
• in-memory database H2
• Maven as build system
• Host code on GitHub public repo

Others:

• Testing with JUnit/Mockito
• Use of Java 8 features

Note: Spring security is not used.

• (POST) /users #to create a User (a PrimaryAccount is created automatically)

  "firstName":"Sergey",
    "lastName":"Prokov",
    "email":"[email protected]",
    "password":"123456"
  

• (POST) /users/login #to sign in a User (we get a TOKEN and UserId)

       "email":"[email protected]",
   "password":"123456"
  

• (GET) /users/{userId} #to get User's info (we must add TOKEN in header)

       key:Authorization, TOKEN:Bearer...
  

• (GET) /accounts/{accountNumber}/users/{userId} #to get the PrimaryAccount's info of the user (we must add the TOKEN in the header)

      key:Authorization, TOKEN:Bearer...
  

• (POST) /accounts/deposit #to deposit an amount in the User's PrimaryAccount ((we must add the TOKEN in the header)

      "userId":"8Kh6k9nBH2WiBaCer99fRPLECV8RkI",
  "accountNumber":"11223146",
  "amount":"542.21",
  "description":"TX 45L"
  

• (POST) /accounts/withdraw #to withdraw an amount in the User's PrimaryAccount ((we must add the TOKEN in the header) (There is a withdrawal's limit of 400)

      "userId":"8Kh6k9nBH2WiBaCer99fRPLECV8RkI",
  "accountNumber":"11223146",
  "amount":"25.3",
  "description":"TX 45L"