Nubank Challenge

This project has the objective to implement a transaction authorizer

The required input format is alist of json object separated by new line

The input line must contain either aaccount object or a transaction object

Account:

{
  "account": {
    "active-card": "Boolean",
    "available-limit": "Number"
  }
}

Transaction:

{
  "transaction": {
    "merchant": "String",
    "ammount": "Number",
    "time": "FormatedDateTime*"
  }
}

FormatedDateTime*: YYYY-MM-ddTHH:mm:ss:SSSz

ex:

{"account": {"active-card": true, "available-limit": 100}}
{"transaction": {"merchant": "Burger King", "amount": 20, "time": "2019-02-13T10:00:00.000Z"}}
{"transaction": {"merchant": "Habbib's", "amount": 90, "time": "2019-02-13T11:00:00.000Z"}}

The output format is list of json object separated by new line

ex:

{"account":{"active-card":true,"available-limit":100},"violations":[]}
{"account":{"active-card":true,"available-limit":80},"violations":[]}
{"account":{"active-card":true,"available-limit":80},"violations":["insufficient-limit"]}

Requirements Java Application

Java 11

Maven 3

Build the jar application

mvn package

Run jar application

java -jar target/nuchallenge.jar < input/operations

Requirements Docker Application

Docker

Build docker image

docker build -t nuchallenge .

Run docker container

cat input/operations | docker container run -i nuchallenge

Note:

[input/operations] options above could be any file path

fabiomaciel/nchallenge