Fintech Project

Dependencies:

golang https://golang.org/doc/install
dep https://github.com/golang/dep

Build:

make build

Problem Statement:

Suatu hari anda terfikir untuk membangun sebuah applikasi fintech yang dapat melakukan transaksi non tunai, sebagai Minimum Viable Productnya anda ingin applikasi ini memiliki feature berikut

Transaksi :

customer dapat melakukan pendaftaran
sebagai owner anda dapat mendaftarkan merchant baru yang dapat melakukan transaksi
customer dapat melakukan pengisian balance (Topup)
customer dapat melakukan pembayaran kepada merchant" yang telah terdaftar

Meet the actor :

customer:
merchant:
transaksi
- customer dapat topup
- customer dapat transaksi ke merchant yang telah terdaftar

Some Spec:

GIVEN I am unregister person
WHEN i register as customer with (name, email, phone)
THEN e-wallet should record it as new customer and return my wallet-id

GIVEN I am owner of Ewallet
WHEN i register new merchant with (name, email)
THEN e-wallet should record it as new merchant and return merchant wallet-id

GIVEN I am customer of Ewallet
WHEN i topup some amount
THEN e-wallet my balance should increased

GIVEN I am customer of Ewallet
WHEN i pay merchant 
THEN my balance should decreased, and merchant balance should increased, and i get transactionsID

(entity) user_accounts
 - user_id
 - name
 - email
 - phonenumber
 - user_type (merchant | customer)

(entity) wallet
 - wallet_id
 - user_id
 - balance

(entity) transaksi
  - id
  - reference
  - date
  - description
  - type (topup | payment)
  
topup:
  - credit wallet

payment:
  - credited wallet (merchant walletid)
  - debited wallet (customer walletid)

service
  - register_customer | register_merchant =
    - add new user to user_accounts
    - add new wallet to wallet 

  - topup:
    - add new transaksi with type topup 
    - increase balance from wallet

  - payment:
    - add new transaksi with type payment 
    - decrease balance from debited wallet
    - incrase balance from credited wallet

API:
  -> :register_customer
    {
      "name": "",
      "email": "",
      "phonenumber": ""
    }
  -> :register_merchant
    {
      "name": "",
      "email": ""
    }
  -> :topup
    {
      "wallet_id": "",
      "amount": ""
    }
  -> :payment
    {
      "wallet_id": "",
      "amount": "",
      "merchant_id": ""
    }

TODO:

masi banyak kekurangan dari implementasi code ini, misalnya implementasi repository yang belum ada (hanya mock), kebutuhan untuk wrap logic kedalam database transaction (for consistency) dan non happy path test

meong1234 / fintech