#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <string>
using namespace std;

// Function prototype
double getGrossWeeklySales(string dayWeek[], int size, double amountDailySales[]);
int findHighestSale(double amountDailySales[], int size);
int findLowestSale(double amountDailySales[], int size);
void sortAscending(double amountDailySales[], int size, string dayWeek[]);

int main()
{
	const double SALES_TAX = 1.0975;
	const int SIZE = 7;
	string dayWeek[SIZE] = { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday" };
	double amountDailySales[SIZE];
	int arrayHolder[SIZE];
	double totalTaxWithheld, totalWeeklySales, netProfitWeekly;
	int highestSaleDay, lowestSaleDay, count;

	cout << fixed << setprecision(2)
		<< "\t\tThis program calculates total weekly sales.\n\n\n\n";

	// Get sum weekly sales
	totalWeeklySales = getGrossWeeklySales(dayWeek, SIZE, amountDailySales);

	// Calculate taxes withheld
	totalTaxWithheld = totalWeeklySales - (totalWeeklySales / SALES_TAX);

	// Calculate net profit
	netProfitWeekly = totalWeeklySales - totalTaxWithheld;

	// Get subscript's highest sale day
	highestSaleDay = findHighestSale(amountDailySales, SIZE);

	// Get subscript's lowest sale day
	lowestSaleDay = findLowestSale(amountDailySales, SIZE);

	// Display data
	cout << "\n\n\n\n\n"
		<< "Total sales for the week: $" << totalWeeklySales << "\n\n"
		<< "Total taxes withheld: $" << totalTaxWithheld << "\n\n"
		<< "Net profit: $" << netProfitWeekly << "\n\n"
		<< "Day with the highest sales amount was " << dayWeek[highestSaleDay]
		<< " with a sales total of $" << amountDailySales[highestSaleDay] << "\n\n"
		<< "Day with the lowest sales amount was " << dayWeek[lowestSaleDay]
		<< " with a sales total of $" << amountDailySales[lowestSaleDay] << "\n\n";

	cout << "\n\n\n\n\n"
		<< "Sales sorted from lowest to highest:\n\n";

	// Start sorting array amountdailySales and dayWeek
	sortAscending(amountDailySales, SIZE, dayWeek);

	// Display sorted days in week and daily sales amount
	for (count = 0; count < SIZE; count++) {
		cout << dayWeek[count] << " had gross sales of $" << amountDailySales[count] << "\n\n";
	}
	cout << "\n\n\n";

	system("PAUSE");
	return 0;
}

// function: Get sum weekly
double getGrossWeeklySales(string dayWeek[], int size, double amountDailySales[]) {
	double GrossWeeklySales = 0.0;
	int count;

	for (count = 0; count < size; count++) {
		cout << setprecision(2) << fixed
			 << "Please enter the gross sales received on " << dayWeek[count] << ": $";
		cin >> amountDailySales[count];
		cout << endl;

		GrossWeeklySales += amountDailySales[count];
	}
	return GrossWeeklySales;
}

// function: Get highest sale day
int findHighestSale(double amountDailySales[], int size) {
	double highestSale = amountDailySales[0];
	int highest = 0, count;

	for (count = 1; count < size; count++) {
		if (amountDailySales[count] > highestSale) {
			highestSale = amountDailySales[count];
			highest = count;
		}
	}
	return highest;
}

// function: Get lowest sale day
int findLowestSale(double amountDailySales[], int size) {
	double lowestSale = amountDailySales[0];
	int lowest = 0, count;

	for (count = 1; count < size; count++) {
		if (amountDailySales[count] < lowestSale) {
			lowestSale = amountDailySales[count];
			lowest = count;
		}
	}
	return lowest;
}

// function: Sort sales day in ascending (selection sort)
void sortAscending(double amountDailySales[], int size, string dayWeek[]) {
	int startScan, minIndex, count;
	double minValue;
	string hold;

	for (startScan = 0; startScan < (size - 1); startScan++) {
		minIndex = startScan;
		minValue = amountDailySales[startScan];
		hold = dayWeek[startScan];

		// Find smallest value
		for (count = startScan + 1; count < size; count++) {
			if (amountDailySales[count] < minValue) {
				minValue = amountDailySales[count];
				minIndex = count;
				hold = dayWeek[count];
			}
		}
		// Swap smallest value in daily sales
		amountDailySales[minIndex] = amountDailySales[startScan];
		amountDailySales[startScan] = minValue;

		// Swap days in week based on daily sales
		dayWeek[minIndex] = dayWeek[startScan];
		dayWeek[startScan] = hold;
	}
}