//Kevin Pavao
//Southern Programming Team
//SWISStoresSales.cpp

#include<iostream>
#include<string>
#include<iomanip>
#include<fstream>
#include<cstring>
#include<sstream>

using namespace std;


struct date
{
	int month,
		 day,
		 year;

	char dash;
};


void menu();

//enter sales by dept. returns filename
string getSales();

string getFileName(string storeNum, int month, int day, int year);

//calculates sales from number of items sold
double calculateSales(int index, string item, double price);

//view the sales file
void viewSales(string fileName);

void clear();

//converts int to string
string itoa(int number);




int main()
{
	menu();

	return 0;
}


void menu()
{
	int choice;
	string fileName;

	clear();

	cout << "Shoppers World Inc.\n\n";
	cout << "1. Enter the days sales by department.\n";
	cout << "2. View the days sales\n";
	cout << "3. Save the sales data\n";
	cout << "4. Quit\n";

	cout << "\n\nEnter choice: ";
	cin >> choice;
	switch(choice)
	{
		case 1:
			fileName=getSales();
			break;
		case 2:
			viewSales(fileName);
			break;
		case 3:
			{
				cout << "File Written.\n";
				cout << "Press enter to continue.";
				cin.get();
				cin.get();
				clear();
				menu();
				break;
			}
		case 4:
			{
				cout << "Press enter to quit.";
				cin.get();
				cin.get();
				break;
			}
		default:
			{
				clear();
				menu();
				break;
			}
	}
}


string getSales()
{
	ofstream outfile;

	double sales[3][8], deptTtl[3]={0,0,0}, storeTtl=0;
	string department, storeNumber;
	date salesDate;
	string fileName;


	//items being sold
	string electronicItems[8]={ "Nintendos","TVs","Dell Computers","Keyboards","Media Players","Speakers","Playstation Games","DVD-Rs" };
	string clothingItems[8]={ "Shirts","Pants","Jeans","Hats","Sweaters","Shorts","Mens Underwear","Womens Underwear"};
	string outdoorItems[8]={ "Tents","Fishing Poles","Bait","Guns","Sleeping Bags","Lanterns","Flashlights","Stoves" };

	//item prices
	double electronicPrices[8]={100,250,500,25,200,50,59,20};
	double clothingPrices[8]={12,25,20,15,30,25,15,20};
	double outdoorPrices[8]={70,80,150,25,30,15,25,10};

	clear();
	cout << "Enter store number: ";
	cin >> storeNumber;

	cout << "Enter date (MM/DD/YYYY): ";
	cin >> salesDate.month >> salesDate.dash >> salesDate.day >> salesDate.dash >> salesDate.year;

	//check to see if date is valid
	while(salesDate.month < 1 || salesDate.month > 12 || salesDate.day < 1 || salesDate.day > 31 || salesDate.year < 1900)
	{
			cout << "Invalid date entered.\nPlease enter again (MM/DD/YYYY): ";
			cin >> salesDate.month >> salesDate.dash >> salesDate.day >> salesDate.dash >> salesDate.year;
	}

	//convert int variables in salesDate to string for the file name
	fileName=itoa(salesDate.month) + salesDate.dash + itoa(salesDate.day) + salesDate.dash + itoa(salesDate.year) + "_" + storeNumber + "_store.txt";
	cout << fileName;

	outfile.open(fileName.c_str());
	//outfile.open("testing.txt");
	if(!outfile) cout << "error";
	outfile << salesDate.month << salesDate.dash << salesDate.day << salesDate.dash << salesDate.year << endl;
	outfile << "Store Number: " << storeNumber << endl;
	for(int x=0; x<3; x++)
	{
		clear();
		if(x==0) department="Electronics";
		if(x==1)	department="Clothing";
		if(x==2)	department="Outdoor";

		cout << department << " Department Sales\n";
		outfile << endl << department << " Department Sales\n\n";
		outfile << setw(20) << left << "Item" << setw(15) << right << "Sales" << endl;

		outfile << setprecision(2) << setiosflags(ios::showpoint) << setiosflags(ios::fixed);

		for(int y=0; y<8; y++)
		{
			if(x==0)
			{
					//x=department, y=item
					sales[x][y]=calculateSales(y,electronicItems[y],electronicPrices[y]);
					deptTtl[x]+=sales[x][y];
					outfile << setw(20) << left << electronicItems[y];
					//outfile << setw(15) << left << static_cast<int>(sales[x][y]/electronicPrices[y]);
					outfile << setw(5) << right << "$" << setw(10) << right << sales[x][y] << endl;
			}
			else if(x==1)
			{
					sales[x][y]=calculateSales(y,clothingItems[y],clothingPrices[y]);
					deptTtl[x]+=sales[x][y];
					outfile << setw(20) << left << clothingItems[y];
					//outfile << setw(15) << left << static_cast<int>(sales[x][y]/clothingPrices[y]);
					outfile << setw(5) << right << "$" << setw(10) << right << sales[x][y] << endl;
			}
			else if(x==2)
			{
					sales[x][y]=calculateSales(y,outdoorItems[y],outdoorPrices[y]);
					deptTtl[x]+=sales[x][y];
					outfile << setw(20) << left << outdoorItems[y];
					//outfile << setw(15) << left << static_cast<int>(sales[x][y]/outdoorPrices[y]);
					outfile << setw(5) << right << "$" <<  setw(10) << right << sales[x][y] << endl;
			}

		}

		//outfile << endl;
		outfile << setw(20) << setfill('.') << left << "Dept. Total";
		outfile << setw(5) << right << "$" << setfill(' ') << setw(10) << right << deptTtl[x] << endl;
		storeTtl+=deptTtl[x];


	}

	outfile << endl;
	outfile << setw(20) << left << "Store Total ";
	outfile << setw(5) << right << "$" << setw(10) << storeTtl << endl;
	outfile.close();

	menu();
	return fileName.c_str();
}


double calculateSales(int index, string item, double price)
{
	int numSold;
	double sales;

	cout << "How many " << item << " sold ($" << price << "/piece): ";
	cin >> numSold;
	sales=numSold*price;

	return sales;
}


void viewSales(string fileName)
{
	ifstream infile(fileName.c_str());
	cout << fileName;
	//ifstream infile("testing.txt");
	char ch;

	clear();

	if(!infile)
	{
		cout << "Error reading file, please re-create.\n(Enter)";
		cin.get();
		cin.get();
		menu();
	}

	infile.get(ch);
	while(infile)
	{
		cout << ch;
		infile.get(ch);
	}
	infile.close();
	cout << "Press enter to continue.";
	cin.get();
	cin.get();
	menu();
}


void clear()
{
	for(int x=0; x<=50; x++)
		cout << endl;
}


string itoa(int number)
{
	ostringstream oss;

	oss << number;
	return oss.str();
}