// calculate rate
public decimal CalculateInterestToDate(IAccounts account, DateTimeOffset toDate)
{
double addvalue;
double year_diff = 0, month_diff;
double origin = (double)account.Balance;
double money = origin;
if (account.AccountNumber.Contains("LN"))
{
year_diff = toDate.Subtract(account.OpenedDate).TotalDays / 365.00;
for (int i = 0; i < Math.Round(year_diff); i++)
{
money = money * (1 + 0.0399);
}
addvalue = money - origin;
}
else
{
month_diff = toDate.Subtract(account.OpenedDate).TotalDays / 30;
for (int i = 0; i < Math.Round(month_diff); i++)
{
money = money * (1 + 0.06);
}
addvalue = money - origin;
}
Console.WriteLine("*******************************");
Console.WriteLine(year_diff);
Console.WriteLine(">Your interest rate is: " + addvalue);
Console.WriteLine();
Console.WriteLine("*******************************");
return((decimal)addvalue);
}
//All transaction logs for the given acount
public IEnumerable <statementrow> CloseAccount(IAccounts account, DateTimeOffset closeDate)
{
foreach (var x in this.TransactionLog)
{
if (x.account == account)
{
yield return(x);
}
}
}
//transfer
public void PerformTransfer(IAccounts from, IAccounts to, decimal amount, string description, DateTimeOffset transferDate)
{
if (from.AccountNumber.Substring(0, 2) == to.AccountNumber.Substring(0, 2))
{
// substract money from sender
from.bal -= amount;
// add money to reciever
to.bal += amount;
//creating trasaction logs: there is one transaction for each accout, so in total two logs needed
// log for sender
statementrow statement1 = new statementrow();
statement1.account = from;
statement1.tran_amount = amount;
statement1.tran_date = transferDate;
statement1.description = description;
statement1.aftertran_balance = from.Balance;
this.TransactionLog.Add(statement1);
// log for reciever
statementrow statement2 = new statementrow();
statement2.account = to;
statement2.tran_amount = amount;
statement2.tran_date = transferDate;
statement2.description = description;
statement2.aftertran_balance = to.Balance;
this.TransactionLog.Add(statement2);
//print outout
Console.WriteLine();
Console.WriteLine(">Transfering " + amount + " from " + from.AccountNumber + " to " + to.AccountNumber);
Console.WriteLine(">Transaction date " + transferDate);
Console.WriteLine(">Message: " + description);
Console.WriteLine();
Console.WriteLine("*******************************");
}// prevent users transfer money to a diff type of account (SV to LN)
else
{
Console.WriteLine();
Console.WriteLine(">Transaction failed: You can't tranfer to a different type of account!");
Console.WriteLine();
Console.WriteLine("*******************************");
}
}
//last five transacation logs for the given account
public IEnumerable <statementrow> GetMiniStatement(IAccounts account)
{
List <statementrow> took = new List <statementrow> {
};
foreach (var x in this.TransactionLog)
{
if (x.account == account)
{
took.Add(x);
}
}
//**Here the transactions were made in time order and the GetMiniStatment operates in the same order
//**so what we need is just reverse the for loop
for (int i = took.Count; i > took.Count - 5; i--)
{
statementrow a = took[i - 1];
yield return(a);
}
}
//withdrawal
public void PerformWithdrawal(IAccounts account, decimal amount, string description, DateTimeOffset withdrawalDate)
{
// substact money from account
account.bal -= amount;
//creating a new transcaction log
statementrow statement = new statementrow();
statement.account = account;
statement.tran_amount = amount;
statement.tran_date = withdrawalDate;
statement.description = description;
statement.aftertran_balance = account.Balance;
this.TransactionLog.Add(statement);
//print output
Console.WriteLine();
Console.WriteLine(">Withdrawaling " + amount + " from " + account.AccountNumber);
Console.WriteLine(">Transaction date " + withdrawalDate);
Console.WriteLine(">Message: " + description);
Console.WriteLine(">Balance after transaction: " + this.GetBalance(account));
Console.WriteLine();
Console.WriteLine("*******************************");
}
//deposit
public void PerformDeposit(IAccounts account, decimal amount, string description, DateTimeOffset depositDate)
{
//adding money into account
account.bal += amount;
//creating a new transaction log
statementrow statement = new statementrow();
statement.account = account;
statement.tran_amount = amount;
statement.tran_date = depositDate;
statement.description = description;
statement.aftertran_balance = account.Balance;
this.TransactionLog.Add(statement);
//print outout
Console.WriteLine();
Console.WriteLine(">Depositing " + amount + " into " + account.AccountNumber);
Console.WriteLine(">Transaction date " + depositDate);
Console.WriteLine(">Message: " + description);
Console.WriteLine(">Balance after transaction: " + this.GetBalance(account));
Console.WriteLine();
Console.WriteLine("*******************************");
}
// open a home loan account
public IAccounts OpenHomeLoanAccount(string customerName, DateTimeOffset openDate)
{
IAccounts openedaccount = new IAccounts();
openedaccount.cname = customerName;
openedaccount.opday = openDate;
Random rd = new Random();
bool Num_taken = true;
int counter = 0;
while (Num_taken)
{
int r = rd.Next(1, 999999);
openedaccount.accnum = "LN-" + r.ToString("D6");
for (counter = 0; counter < accountList.Count; counter++)
{
if (accountList[counter].AccountNumber == openedaccount.AccountNumber)
{
break;
}
}
if (counter == accountList.Count)
{
Num_taken = false;
}
}
Console.WriteLine();
Console.WriteLine(">Openning account: " + customerName);
Console.WriteLine(">Account Number: " + openedaccount.AccountNumber);
Console.WriteLine(">Open date: " + openDate);
Console.WriteLine();
Console.WriteLine("*******************************");
this.AccountList.Add(openedaccount);
return(openedaccount);
}
// check balace of the account
public decimal GetBalance(IAccounts account)
{
Console.WriteLine(account.AccountNumber + " => Bal : " + account.Balance + "\n");
return(account.Balance);
}
static void Main(string[] args)
{
// initializing a IReadfiybank object
IReadifybank banking = new IReadifybank();
//open 3 account on 1/1/2017, 1 LN account and 2 SV accounts
Console.WriteLine("~~~~~~~~~~~~OPEN ACCOUNTS~~~~~~~~~~~\n");
DateTime open_day = new DateTime(2017, 1, 1);
IAccounts sheen_LN = banking.OpenHomeLoanAccount("Sheen Lian", open_day);
IAccounts sheen_SV = banking.OpenSavingsAccount("Sheen Lian", open_day);
IAccounts lily_SV = banking.OpenSavingsAccount("Lily Shi", open_day);
Console.WriteLine("\n\n");
//transaction 1: deposit 50000 dollars into each of these accounts
Console.WriteLine("~~~~~~~~~~~~DEPOSIR~~~~~~~~~~~~~~~~~\n");
banking.PerformDeposit(sheen_SV, 50000m, "Save for good use!", DateTime.Now);
banking.PerformDeposit(sheen_LN, 50000m, "Save for good use!", DateTime.Now);
banking.PerformDeposit(lily_SV, 50000m, "Save for good use!", DateTime.Now);
Console.WriteLine("\n\n");
//check balance of thse accounts
Console.WriteLine("~~~~~~~~~~~~Chec balance~~~~~~~~~~~~\n");
banking.GetBalance(sheen_LN);
banking.GetBalance(sheen_SV);
banking.GetBalance(lily_SV);
Console.WriteLine("\n\n");
//test calculate interest rate
Console.WriteLine("~~~~~~~~Calculate interest rate~~~~~~");
DateTime todate = new DateTime(2020, 1, 1);
banking.CalculateInterestToDate(sheen_LN, todate);
Console.WriteLine("\n\n");
//transaction 2: withdrawal 10000 dollars from lily_SV after some time
TimeSpan duration1 = new TimeSpan(888, 88, 88);
Console.WriteLine("~~~~~~~~~~~~Withdrawal~~~~~~~~~~~~~~~");
banking.PerformWithdrawal(lily_SV, 10000m, "Withdrawal for good use!", DateTime.Now.Add(duration1));
Console.WriteLine("\n\n");
//transaction 3: transfer 6666 dollars from sheen1 to lily after some time
TimeSpan duration2 = new TimeSpan(666, 66, 66);
Console.WriteLine("~~~~~~~~~~~~~~~~Transfer~~~~~~~~~~~~~");
//THIS WILL NOT WORK AND SHOW WARNING!!!:because sheen1 and lily are different type of accounts
//Just test the warning giving part of the code:
banking.PerformTransfer(sheen_LN, lily_SV, 6666m, "Giving is loving!", DateTime.Now.Add(duration2));
//now try again from sheen2
banking.PerformTransfer(sheen_SV, lily_SV, 6666m, "Giving is loving!", DateTime.Now.Add(duration2));
Console.WriteLine("\n\n");
//Do some different operation on sheen2
///<summary>
///this part use multithreading to do transactions
///so the output in application console will be messy
///if you want to see the neat version of this, plz unquote the code below which
///are actully doing the same thing without applying thread
Task tran1 = new Task(() => banking.PerformDeposit(sheen_SV, 10000m, "Save for good use!", DateTime.Now));
Task tran2 = new Task(() => banking.PerformDeposit(sheen_SV, 11111m, "Save for good use!", DateTime.Now));
Task tran3 = new Task(() => banking.PerformDeposit(sheen_SV, 12222m, "Save for good use!", DateTime.Now));
Task tran4 = new Task(() => banking.PerformDeposit(sheen_SV, 111.11m, "Save for good use!", DateTime.Now));
Task tran5 = new Task(() => banking.PerformTransfer(sheen_SV, lily_SV, 222.22m, "Giving is loving!", DateTime.Now.Add(duration2)));
Task tran6 = new Task(() => banking.PerformWithdrawal(sheen_SV, 333.33m, "Withdrawal for good use!", DateTime.Now.Add(duration1)));
Task tran7 = new Task(() => banking.PerformDeposit(sheen_SV, 444.44m, "Save for good use!", DateTime.Now));
Task tran8 = new Task(() => banking.PerformTransfer(sheen_SV, lily_SV, 555.55m, "Giving is loving!", DateTime.Now.Add(duration2)));
tran1.Start();
tran2.Start();
tran3.Start();
tran4.Start();
tran5.Start();
tran6.Start();
tran7.Start();
tran8.Start();
//neat version
/*
* banking.PerformDeposit(sheen_SV, 10000m, "Save for good use!", DateTime.Now);
* banking.PerformDeposit(sheen_SV, 10001m, "Save for good use!", DateTime.Now);
* banking.PerformDeposit(sheen_SV, 10002m, "Save for good use!", DateTime.Now);
* banking.PerformDeposit(sheen_SV, 111.11m, "Save for good use!", DateTime.Now);
* banking.PerformTransfer(sheen_SV, lily_SV, 222.22m, "Giving is loving!", DateTime.Now.Add(duration2));
* banking.PerformWithdrawal(sheen_SV, 333.33m, "Withdrawal for good use!", DateTime.Now.Add(duration1));
* banking.PerformDeposit(sheen_SV, 444.44m, "Save for good use!", DateTime.Now);
* banking.PerformTransfer(sheen_SV, lily_SV, 555.55m, "Giving is loving!", DateTime.Now.Add(duration2));
*/
//try get last five transaction
IEnumerable <statementrow> a = banking.GetMiniStatement(sheen_SV);
Console.WriteLine("~~~~~~~~Get last five~~~~~~~~~~");
foreach (var x in a)
{
Console.WriteLine(x.Amount);
}
Console.WriteLine("\n\n");
//try close transaction
IEnumerable <statementrow> b = banking.CloseAccount(sheen_SV, DateTime.Now);
Console.WriteLine("~~~~~~~Close account~~~~~~~~~~~");
foreach (var x in b)
{
Console.WriteLine(x.Amount);
}
Console.WriteLine("\n\n");
//*****FOR THIS TRY GET TRANSACATION PART, SINCE THE RETURN TYPE IS A ENUMERABLE<IStatmentRow> TYPE,
//*****SO TO PROVE IT IS WORKING, I PRINT OUT THE AMOUNT OF EACH TRANSACTION
//time order issue explained in the method define
}