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#include <iostream>
using std::cerr;
using std::cin;
using std::cout;
using std::endl;
using std::fixed;
using std::ios;
using std::left;
using std::right;
using std::showpoint;
#include <fstream>
using std::ofstream;
using std::ostream;
using std::fstream;
#include <iomanip>
using std::setw;
using std::setprecision;
#include <cstdlib>
using std::exit;
#include "ClientData.h"
int enterChoice();
void createTextFile(fstream&);
void updateRecord(fstream&);
void newRecord(fstream&);
void deleteRecord(fstream&);
void outputLine(ostream&, const ClientData&);
int getAccount(const char * const);
enum Choices {PRINT = 1, UPDATE, NEW, DELETE, END};
int main()
{
fstream inOutCredit("client.dat",ios::app);
if (!inOutCredit)
{
cerr<<"File could not be opened, Please try again!"<<endl;
exit(1);
}
int choice;
while((choice = enterChoice()) != END)
{
switch (choice)
{
case PRINT:
createTextFile(inOutCredit);
break;
case UPDATE:
updateRecord(inOutCredit);
break;
case NEW:
newRecord(inOutCredit);
break;
case DELETE:
deleteRecord(inOutCredit);
break;
default:
cerr<<"Your input was unable to comply!"<<endl;
break;
}
inOutCredit.clear();
}
}
int enterChoice()
{
cout<<"\nEnter your selection:"<<endl
<<"1 - Create a database copy for printing purpose (ESRes_print.txt)"<<endl
<<"2 - Update a student record"<<endl
<<"3 - Add a new student record"<<endl
<<"4 - Delete a student record"<<endl
<<"5 - Terminate program\n";
int menuSelection;
cin>>menuSelection;
return menuSelection;
}
void createTextFile(fstream&readFromFile)
{
ofstream outPrintFile("ESRes_print.txt", ios::out);
if (!outPrintFile)
{
cerr<<"Your request was unable to comply, no print file created!"<<endl;
exit(1);
}
outPrintFile<<left<<setw(10)<<"Account"<<setw(16)<<"Last Name"<<setw(11)<<"First Name"<<right<<setw(10)<<"Balance"<<endl;
readFromFile.seekg(0);
ClientData client;
readFromFile.read(reinterpret_cast<char*>(&client),sizeof(ClientData));
while (!readFromFile.eof())
{
if (client.getAccountNumber() != 0)
outputLine(outPrintFile,client);
readFromFile.read(reinterpret_cast<char*>(&client),sizeof(ClientData));
}
}
void updateRecord(fstream&updateFile)
{
int accountNumber = getAccount("Enter account to update");
updateFile.seekg((accountNumber - 1)*sizeof(ClientData));
ClientData client;
updateFile.read(reinterpret_cast<char*>(&client),sizeof(ClientData));
if (client.getAccountNumber() != 0)
{
outputLine(cout, client);
cout<<"\nEnter charge (+) or payment (-) :";
double transaction;
cin>>transaction;
double oldBalance = client.getBalance();
client.setBalance(oldBalance + transaction);
outputLine(cout,client);
updateFile.seekp((accountNumber - 1)*sizeof(ClientData));
updateFile.write(reinterpret_cast<const char*>(&client),sizeof(ClientData));
}
else
cerr<<"Account #"<<accountNumber<<" has no information"<<endl;
}
void newRecord(fstream&insertInFile)
{
int accountNumber = getAccount("Enter new account number");
insertInFile.seekg((accountNumber - 1)*sizeof(ClientData));
ClientData client;
insertInFile.read(reinterpret_cast<char*>(&client),sizeof(ClientData));
if (client.getAccountNumber() == 0)
{
char lastName[15];
char firstName[10];
double balance;
cout<<"Enter lastname, firstname, balance\n?";
cin>>setw(15)>>lastName;
cin>>setw(10)>>firstName;
cin>>balance;
client.setLastName(lastName);
client.setFirstName(firstName);
client.setBalance(balance);
client.setAccountNumber(accountNumber);
insertInFile.seekp((accountNumber - 1)*sizeof(ClientData));
insertInFile.write(reinterpret_cast<const char*>(&client),sizeof(ClientData));
}
else
cerr<<"Account #"<<accountNumber<<" is already contains information."<<endl;
}
void deleteRecord(fstream&deleteFromFile)
{
int accountNumber = getAccount("Enter account to delete");
deleteFromFile.seekg((accountNumber - 1)*sizeof(ClientData));
ClientData client;
deleteFromFile.read(reinterpret_cast<char*>(&client),sizeof(ClientData));
if (client.getAccountNumber() != 0)
{
ClientData blankClient;
deleteFromFile.seekp((accountNumber - 1)*sizeof(ClientData));
deleteFromFile.write(reinterpret_cast<const char*>(&blankClient),sizeof(ClientData));
cout<<"Account #"<<accountNumber<<" deleted.\n";
}
}
void outputLine(ostream&output, const ClientData&record)
{
output<<left<<setw(10)<<record.getAccountNumber()<<setw(16)<<record.getLastName()<<setw(11)<<record.getFirstName()<<setw(10)<<setprecision(2)<<right<<fixed<<showpoint<<record.getBalance()<<endl;
}
int getAccount(const char* const prompt)
{
int accountNumber;
do
{
cout<<prompt<<"(1 - 100):";
cin>>accountNumber;
}while(accountNumber < 1 || accountNumber > 100);
return accountNumber;
}
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