#50 (3) - Delete Client By Account Number.txt

#include<iostream>
#include<string>
#include<fstream>
#include<iomanip>
#include<vector>
using namespace std;

const string ClientsFileName = "Clients.txt";

struct sClient
{
	string AccountNumber = "";
	string PinCode = "";
	string Name = "";
	string Phone = "";
	double AccountBalance = 0.0;
	bool MarkForDelete = false;
};

string ReadClientAccountNumber()
{
	string AccountNumber = "";
	cout << "Please Enter Account Number ? ";
	cin >> AccountNumber;
	return AccountNumber;
}

vector <string> SplitString(string S1, string delim)
{
	short pos = 0;
	string sWord = "";
	vector <string> vString;

	while ((pos = S1.find(delim)) != std::string::npos)
	{
		sWord = S1.substr(0, pos);
		if (sWord != "")
		{
			vString.push_back(sWord);
		}

		S1.erase(0, pos + delim.length());
	}

	if (S1 != "")
	{
		vString.push_back(S1);
	}

	return vString;
}

sClient ConvertLineToRecord(string LineRecord, string Seperator = "#//#")
{
	sClient Client;

	vector <string> vClientData = SplitString(LineRecord, Seperator);

	Client.AccountNumber = vClientData[0];
	Client.PinCode = vClientData[1];
	Client.Name = vClientData[2];
	Client.Phone = vClientData[3];
	Client.AccountBalance = stod(vClientData[4]);

	return Client;
}

vector <sClient> LoadClientsDataFromFile(string FileName)
{
	vector <sClient> vClients;

	fstream MyFile;
	MyFile.open(FileName, ios::in);

	if (MyFile.is_open())
	{
		string Line;
		sClient Client;

		while (getline(MyFile, Line))
		{
			Client = ConvertLineToRecord(Line);

			vClients.push_back(Client);
		}

		MyFile.close();
	}

	return vClients;
}

void PrintClientCard(sClient& Client)
{
	cout << "\n\nThe following are the Client Details :\n\n";

	cout << "AccountNumber  : " << Client.AccountNumber << endl;
	cout << "PinCode        : " << Client.PinCode << endl;
	cout << "Name           : " << Client.Name << endl;
	cout << "Phone          : " << Client.Phone << endl;
	cout << "AccountBalance : " << Client.AccountBalance << endl;
}

bool FindClientByAccountNumber(string AccountNumber, sClient& Client, vector <sClient> &vClients)
{
	for (sClient& C : vClients)
	{
		if (C.AccountNumber == AccountNumber)
		{
			Client = C;
			return true;
		}
	}

	return false;
}

bool MarkClientForDeleteByAccountNumber(string AccountNumber, vector <sClient>& vClients)
{
	for (sClient& C : vClients)
	{
		if (C.AccountNumber == AccountNumber)
		{
			C.MarkForDelete = true;
			return true;
		}
	}

	return false;
}

string ConvertRecordToLine(sClient& BankClientData, string Seperator = "#//#")
{
	string sClientRecord = "";

	sClientRecord += BankClientData.AccountNumber + Seperator;
	sClientRecord += BankClientData.PinCode + Seperator;
	sClientRecord += BankClientData.Name + Seperator;
	sClientRecord += BankClientData.Phone + Seperator;
	sClientRecord += to_string(BankClientData.AccountBalance);

	return sClientRecord;
}

void SaveClientsDataToFile(string FileName, vector <sClient>& vClients)
{
	fstream MyFile;
	MyFile.open(FileName, ios::out);

	if (MyFile.is_open())
	{
		string DataLine = "";

		for (sClient &C : vClients)
		{
			if (C.MarkForDelete == false)
			{
				DataLine = ConvertRecordToLine(C);

				MyFile << DataLine << endl;
			}
		}

		MyFile.close();
	}
}

void DeleteClientByAccountNumber(string AccountNumber, vector <sClient> &vClients)
{
	sClient Client;
	char Answer = 'n';

	if (FindClientByAccountNumber(AccountNumber, Client, vClients))
	{
		PrintClientCard(Client);

		cout << "\n\nAre you sure you want delete this Client ?  Y/N? ";
		cin >> Answer;

		if (Answer == 'Y' || Answer == 'y')
		{
			MarkClientForDeleteByAccountNumber(AccountNumber, vClients);
			SaveClientsDataToFile(ClientsFileName, vClients);

			vClients = LoadClientsDataFromFile(ClientsFileName);
			cout << "\n\nClient Deleted Successfully.\n";
		}
	}
	else
	{
		cout << "\nClient with Account (" << AccountNumber << ") Not Found!\n";
	}
}

int main()
{
	vector <sClient> vClients = LoadClientsDataFromFile(ClientsFileName);
	string AccountNumber = ReadClientAccountNumber();

	DeleteClientByAccountNumber(AccountNumber, vClients);

	return 0;
}