static void Main(string[] args)
{
try
{
IEnumerable <IFeesCalculationRule> feesCalculationInstances = GetInstancesOfFeesCalculationRules.GetRulesInstances();
IEnumerable <IDiscountCalculationRule> discountCalculationInstances = GetInstancesOfDiscountCalculationRules.GetRulesInstances();
//get all transactions
var transactions = TransactionRepository
.GetAllTransactions()
.OrderByDescending(x => x.date)
.ThenBy(x => x.merchantName)
.ToList();
// get list of discounts for merchants
Dictionary <string, decimal> discountsForMerchants = DiscountsForMerchants.GetDiscounts();
while (transactions.Any())
{
var firstTransaction = transactions.First();
//get transactions by merchant's name and month
var filteredTransactionsByFirstTransaction =
TransactionRepository.GetFilteredTransactionsByDateAndMerchant(firstTransaction.merchantName, firstTransaction.date);
//get fee model
var feeModel = CalculateFees.CalculateFee(
filteredTransactionsByFirstTransaction,
feesCalculationInstances,
discountCalculationInstances,
discountsForMerchants);
feeModel.merchantName = firstTransaction.merchantName;
feeModel.date = firstTransaction.date;
var feeWithDiscount = feeModel.feesAmount - feeModel.discountAmount + feeModel.additionalFeesAmount;
Console.WriteLine($"{feeModel.date.ToString("yyyy-MM"),10}" +
$"{feeModel.merchantName,15}" +
$"{string.Format("{0:0.00}", feeWithDiscount).Replace(',', '.'),10}");
// remove processed transactions from list
transactions = transactions.Except(filteredTransactionsByFirstTransaction).ToList();
}
Console.ReadLine();
}
catch (InvalidFileException)
{
Console.WriteLine("Error reading from file...");
Console.ReadLine();
}
catch (Exception)
{
Console.WriteLine("Error...");
Console.ReadLine();
}
}
public void CalculateFeeTest_WithDiscount()
{
//Arange
var merchantName = "TELIA";
List <TransactionModel> transactions = new List <TransactionModel>()
{
new TransactionModel()
{
date = new System.DateTime(2018, 10, 02), merchantName = merchantName, transactionAmount = 300
},
new TransactionModel()
{
date = new System.DateTime(2018, 10, 03), merchantName = merchantName, transactionAmount = 150
}
};
//Act
var feeModel = CalculateFees.CalculateFee(transactions, feesCalculationInstances, discountCalculationInstances, discountsForMerchants);
//Assert
Assert.AreEqual(feeModel.feesAmount, 4.5m);
Assert.AreEqual(feeModel.additionalFeesAmount, 29m);
Assert.AreEqual(feeModel.discountAmount, 0.45m);
}