---
title: ING Challenge
---
## Requirements

### Accounts
Implement a class that returns `account` objects with the following structure (you can use any form of persistence you like - LocalDb, mock objects, json files,etc):

{
    "resourceId": "450ffbb8-9f11-4ec6-a1e1-df48aefc82ef",
    "product": "Betaalrekening",
    "iban": "NL69INGB0123456789",
    "name": "Hr A van Dijk , Mw B Mol-van Dijk",
    "currency": "EUR"
}

### Transactions
Implement a class that returns `transaction` objects with the following structure (you can use any form of persistence you like - LocalDb, mock objects, json files,etc):

{
    "iban": "NL69INGB0123456789",
    "transactionId": 1,
    "amount": 20.00,
    "categoryId": 1,
    "transactionDate": "2020-09-23"
}

### Category list
The list of available transaction categories is

1 - Food
2 - Entertainment
3 - Clothing
4 - Travel
5 - Medical expenses

### Accounts endpoint
Create an api in .net core and the following endpoint:
`GET /api/accounts`
It reads data from [Accounts](#Accounts) and returns the list of client's accounts.
The endpoint should return an array using the following structure:

{
  "accounts": [
    {
        "resourceId": "450ffbb8-9f11-4ec6-a1e1-df48aefc82ef",
        "product": "Betaalrekening",
        "iban": "NL69INGB0123456789",
        "name": "Hr A van Dijk , Mw B Mol-van Dijk",
        "currency": "EUR"
    }
  ]
}

### Transaction report endpoint
Implement another endpoint:
`GET /api/transactions/report`
It reads data from 2. and returns a sum of client [Transactions](#Transactions) from the last month, grouped by category, for a specific account.
The endpoint should return an array using the following structure:

[
    {
        "categoryName": "Food",
        "totalAmount": 1000.20,
        "currency": "RON"
    },
    {
        "categoryName": "Entertainment",
        "totalAmount": 2500.00,
        "currency": "RON"
    }
]

---
## Notes
- Push your code to a public github repository
- Use the latest stable version of `.NET`
- Your code should be clean, easy to read, and covered by unit tests
- A new type of data source should be easily plugged in
- **[BONUS]** Use ING's `open banking APIs` available for `PSD2`:
- Read the getting started documentation for `PDS2 ING sandbox` available [here](https://developer.ing.com/openbanking/get-started/psd2 "here")
- Connect `GET /api/accounts` to the API available in the sandbox
> It is posible that two example scripts from the documentation need a small fix:
> - Request an application access token
> - Use the authorization code to request the customer access token

> If you have problems with the two scripts you can replace:

    payloadDigest=`echo -n "$payload" | openssl dgst -binary -sha256 | openssl base64`

>with:

    payloadDigest=`printf %s "$payload" | openssl dgst -binary -sha256 | openssl base64`

- **[BONUS]** Integrate Swaggger for your APIs
- **[BONUS]** Use HealthChecks
- **[BONUS]** Create docker files for your APIs
- **[BONUS]** Publish your APIs (ex: Azure, AWS, Google Cloud Platform)