Part 4 - TransactionController

01_Transaction.cs

public class Transaction
{
    public PaymentType PaymentType { get; set; }

    public decimal Amount { get; set; }
}

02_TransactionController.cs

[ApiController]
[Route("[controller]")]
public class TransactionController : ControllerBase
{
    private static readonly List<Transaction> s_Transactions = new List<Transaction>();

    [HttpPost]
    [Route("create")]
    public IActionResult CreateTransaction(Transaction transaction)
    {
        s_Transactions.Add(transaction);
        return Ok();
    }
}