///P08 File Processing   Juan Marquez  
/*
   This program allows users to enter and save payroll information to a file.
   The file can then be read so that the information entered can be displayed.
   Payroll clerks can choose from the following menu options:
   
     A: Create a new file for Payroll Information
     B: Enter Payroll Information
     C: Display Payroll Information 

     X: Exit the Payroll Information Module
     
   The following items for each employee are saved in the file p08.txt:
     Employee ID  
     Rate         
     Hours W1,W2,W3,W4

*/
#include <fstream>  // file processing
#include <iostream> // cin and cout
#include <cctype>   // toupper
#include <iomanip>  // setw

using namespace std;

//menu options
//Opt A: 
void createNewFile();

//Opt B: 
void enterInfo();

//Opt C:    
void listInfo();

//Supporting functions
void displayContinuePrompt();


//Program starts here   
void main()
{
//Declare local variable to store menu option selected
    char   choice;

//Check to see what the user wants to do
    do  //while (choice != 'X')
    {
        cout << "P08   Juan Marquez    \n\n";

        cout << "Enter the letter of the desired menu option. \n"
             << "Press the Enter key after entering the letter. \n\n"

             << "  A: Create a new file for Payroll Information  \n"
             << "  B: Enter Payroll Information  \n"
             << "  C: List Payroll Information   \n\n"

             << "  X: Exit the Payroll Information Module \n\n"

             << "Choice: ";

        cin >> choice;
        cout << "\n\n";

        choice = toupper(choice); //convert to uppercase

        switch (choice)
        {
            case 'A':
                createNewFile();
                break;
            case 'B':
                enterInfo();
                break;
            case 'C':
                listInfo();
                break;

            case 'X':
                cout << "Now exiting Payroll Information...please wait.\n\n";
                break;
            default:
                cout << "\a"; //alert
                cout << "Invalid Option Entered - Please try again. \n\n";

        }//end of switch

    } while (choice != 'X');

    return; 
}//end of main


//Function Definitions
void createNewFile()
{
//Declare local variables
    char answer;

    cout << "P08   Juan Marquez    Create new file for Payroll Information \n\n";

//Student must remove next line of code and code the rest of the function. 


//Prompt the user if they want to create a new file

	cout << "Would you like to create a new file? Type Y or N.\n\n";
    cin  >> answer;
//If Yes, try to create a new file using open function

	if (toupper (answer) == 'Y')
	{
//  Open the file for output 	
		ofstream outfile;
		outfile.open("P08.txt");

		//  If there are any errors, 
//     display an error message and return.
		if (outfile.fail())
		{
			cout << "There was an error.\n";
			exit(1);
		}
//  else 
//     display message that a file was created successfully
//else 		
		else cout << "New file created successfully!\n"; 

//  display a message that a new file was NOT created
    if (toupper (answer) == 'N')
		{
			cout << "No new file created.\n";
			exit(1);
		}
//   Close the file		
		outfile.close();
		return;


	






//Call displayContinue to pause
    displayContinuePrompt();
    return;
}
}

void enterInfo()
{
//Declare local variables
    int employeeId;
    double rate; 
    int w1Hours, w2Hours, w3Hours, w4Hours;
    char answer;

    cout << "P08   Juan Marquez    Enter Payroll Information \n\n";

//Student must remove next line of code and code the rest of the function. 
    cout << "Please enter your payroll information.";
	


//Open the file for output (append) 

		ofstream outfile;
		outfile.open("P08.txt", ios::app);

//If there are any errors, 
//  display an error message and return.
		
		if (outfile.fail())
		{
			cout << "An error has occured.\n";
		
			exit(1);
		}
//Set output to 2 decimal positions for file
    outfile.setf(ios::fixed);
    outfile.setf(ios::showpoint);
    outfile.precision(2);

//Use a do-while loop to get input
	do 
//  Display prompt and get the data	
	{
		cout << "P08 Aaron harper enter payrol information.\n\n";
		cout << "Enter the Employee Id, rate, w1, w2, w3, w4: \n\n";
	
		cin  >>     
			employeeId >> rate >> w1Hours >> w2Hours >> w3Hours >> w4Hours;

//  Write data to file and format using setw manipulators
		outfile << employeeId << rate << w1Hours << w2Hours << w3Hours << w4Hours;

//  Prompt user if they want to add another employee
		cout << "Would you like to add another employee (Y/N)\n";
		cin >> answer;
	
//  Do loop again if they don't enter N	
	}while (toupper (answer) == 'Y');
//end do-while loop
    cout << endl; 


//Close the file
outfile.close();
 return;
}
//Call displayContinue to pause
    displayContinuePrompt();
  return;
 

void listInfo();
{
//Declare local variables
    int employeeId;
    double rate; 
    int w1Hours, w2Hours, w3Hours, w4Hours;

    cout << "P08   Juan Marquez    List Payroll Information \n\n";


//Open the file for input  

		ofstream infile;
		infile.open("P08.txt", ios::app);
//If there are any errors, 
//  display an error message and return.
if (outfile.fail())
		{
			cout << "An error has occured.\n";
		
			exit(1);
		}

//Set output to 2 decimal positions for cout
    cout.setf(ios::fixed);
    cout.setf(ios::showpoint);
    cout.precision(2);

//Display headings
    cout << "Employee   Rate   Wk1   Wk2   Wk3   Wk4 \n\n";

//Read the first record. 
	 
	 infile >> rate >> wk1 >> wk2 >> wk3 >> wk4;
	 cin    >> rate >> wk1 >> wk2 >> wk3 >> wk4;



//Use while loop to process file, because 
//  while loops handle empty files.

while (! infile.eof() )

{
	outFile << rate << wk1 << wk2 << wk3 << wk4;
	
//  Display record read and format using setw manipulators
//  Read next record
    
	inFile >> rate >> wk1 >> wk2 >> wk3 >> wk4;
	//end while loop 
    return 0; 
}
//Close the file
    	outfile.close();
		return;
//Call displayContinue to pause
    displayContinuePrompt();
    return;
}

void displayContinuePrompt()
{
//Declare local variables
    char prompt;

    cout << "\n\nProcedure completed. Press Enter to continue: ";
    cin.ignore();
    prompt = cin.get();

    system("cls");   //clear screen - DOS

    return;
}
//End of program