/******************************************
*Program Name: Cheesecake Survey          *
*Class: COP3014                           *
*Description: Inputs and sorts a file     *
*alphabetically, prints a summary of the  *
*survey.                                  *
*Date: 11/18/2011                         *
*Author: Ashley Suh	                      *
*Sources: Dr. Gaitros                     *
******************************************/
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>

using namespace std;

//Prototypes
const int MAXSIZE=80;
struct Roster
{
	string Lname;
	string Fname;
	char Cheesecake;
};
string getfilename();
int countrecords (string);
void readsurvey (const int, const string, struct Roster *);
void sort (struct Roster *, const int);
void printsummary (const int, struct Roster *);


int main (void)
{
	//1. Get a valid file name
	string filename;
	filename = new char[MAXSIZE];
	filename = getfilename();

	//2. Count the # of records
	int recordcount = countrecords(filename);
	cout << "Got " << recordcount << " records" << endl;

	//3. Allocate the space for the records
	struct Roster * MySurvey = new struct Roster[recordcount];

	//4. Read the records into the structure
	readsurvey (recordcount, filename, MySurvey);

	//5. Sort the records
	sort (MySurvey, recordcount);

	//6. Print report
	printsummary (recordcount, MySurvey);

	system("pause");

	return 0;

}

/******************************************
*Description: Function opening the file   *
*and checks whether or not the file exists*
*Author: Ashley Suh						  *
******************************************/
string getfilename ()
{
	string filename;
	ifstream myfile;

	//Get file name
	cout << "Please enter a file name: ";
	cin >> filename;
	myfile.open(filename.c_str());

	//loop to check if file exists
	while (!myfile.is_open())
	{
		cout << "Enter it again: ";
		cin >> filename;
		myfile.open(filename.c_str());
	}

	myfile.close(); //close file
	return filename;
}

/******************************************
*Description: counts the amount of records*
*in the file.                             *
*Author: Ashley Suh						  *
******************************************/
int countrecords (const string fn)
{
	//counts amount of records in file
	int count = 0;
	char inputline [MAXSIZE];
	ifstream myfile;
	myfile.open(fn);
	myfile.getline(inputline,80);

	//loop to count lines when file is not complete
	while (!myfile.eof())
	{
		count++;
		myfile.getline(inputline,80);
	}
	myfile.close();

	return count;
}

/******************************************
*Description: reads in the file and       *
*creates a copy.                          *
*Author: Ashley Suh						  *
******************************************/
void readsurvey (const int rc, const string fn, struct Roster * ms)
{
	//opens the file
	ifstream myfile;
	myfile.open(fn.c_str());

	//copies the file in MySurvey
	for (int index = 0; index < rc; index++)
	{
		myfile >> ms[index].Lname;
		myfile >> ms[index].Fname;
		myfile >> ms[index].Cheesecake;
	}

	//closes the file
	myfile.close();
}

/******************************************
*Description: Sorts the file for names    *
*in alphabetical order.                   *
*Author: Ashley Suh						  *
******************************************/
void sort (struct Roster * ms, const int rc)
{
	bool swapped = true;

	//while loop where sorting will continue
	while(swapped)
	{
		//if swapping is unnecesary, sets to false
		swapped = false;

		//swap places in file if not in alphabetical order
		for(int i = 0; i < rc - 1; i++)
			if (ms[i].Lname > ms[i+1].Lname)
			{
				//swaps
				Roster temp = ms[i];
				ms[i] = ms[i+1];
				ms[i+1] = temp;

				swapped = true;
			}
	}
}

/*******************************************
*Description: Prints the records of the    *
*file, including the number of participants*
*and amount of people who chose cake or pie*
*Author: Ashley Suh						   *
*******************************************/
void printsummary (const int rc, struct Roster * ms)
{
	int cake = 0;
	int pie = 0;

	//survey header
	cout << setw(15) << left << "Cheesecake Survey" << endl;
	cout << setw(15) << left << "Last Name" ;
	cout << setw(15) << left << "First Name" ;
	cout << setw(15) << left << "Cake or Pie" << endl;
	cout << "-----------------------------------------" << endl;

	//displays sorted file
	for(int i = 0; i < rc; i++)
	{
		cout << setw(15) << left << ms[i].Lname;
		cout << setw(15) << left << ms[i].Fname;

		if (ms[i].Cheesecake == 'C')
			{
				cake++; //counter for cake choices
				cout << setw(10) << left << "Cake" << endl;
		    }

		else
			{
				pie++; //counter for pie choices
				cout << setw(10) << left << "Pie" << endl;
			}
	}

	cout << "Number of people who believe Cheesecake is a cake: " << cake << endl;
	cout << "Number of people who believe Cheesecake is a pie: " << pie << endl;
	cout << "Total number of survey participants: " << rc << endl;
}