// -------------------------------------------------------------------------------
// Programming Assignment #3: VWC Stone Mart, Inc. Summary and Analysis
//
// Written by Caitlin Hansen
// October 2008
//
// Purpose: To calculate the cost of materials, cost of delivery, sales tax, and 
// total charges for the orders, total number of orders, number of the various 
// materials orders, number of rejected orders, minimum charge, and maximum charge.
// -------------------------------------------------------------------------------

// ------- Preprocessor directives

#include <iostream> 
#include <iomanip>   
#include <fstream>
using namespace std;

// ----------- Main Function ------------

int main()
{

// ------------ Variables
    int
      distance,			// the distance for delivery
      totalorders = 0,		// the total number of orders
      concretecount = 0,	// the amount of ready-mix concrete orders
      gravelcount = 0,		// the amount of rock and gravel orders
      sandcount = 0,		// the amount of sand orders
      topsoilcount = 0,		// the amount of topsoil orders
      rejectcount = 0,		// the amount of rejected orders
      amtordered;		// the amount of product ordered

   float
      unitcost,			// the price of the products per cubic yard
      deliverychrge,		// the price of the delivery of the product(s)
      mincharge,		// the minimum charge of the total cost
      maxcharge,		// the maximum charge of the total cost
      matscost,			// the cost of the product only
      salestax,			// the total charge of the sales tax
      totalcharge = 0,		// the total charge of entire purchase
      total;			// the total charge of the individual purchase

   char
      productch,		// the product code C, R, S, or T
      dummych,			// skip blank in column 2
      classch;			// the class code C, G, D, A, B, or C

   bool
      errorincodes;		// false if codes okay, true if either code invalid

// --- Output report headings here
cout << endl;
cout << "------------------------------------------------------------------------------";
cout << endl;
cout << "                            VWC Stone Mart, Inc.                              ";
cout << endl;
cout << "                               Order Summary                                  ";
cout << endl;
cout << "------------------------------------------------------------------------------";
cout << endl;
cout << endl;
cout << "-----------------------------------------------------------------------------------------------------";
cout << endl;
cout << "                                                                 Cost of      Cost of                ";
cout << endl;
cout << " Product     Class	  Amount      Distance      Materials     Delivery     Sales Tax       Total  ";
cout << endl;
cout << "-----------------------------------------------------------------------------------------------------";
cout << endl;

// --- Set numeric formatting for detail lines
cout << fixed << setprecision(2);     

// --- Initialize counters, summary variables here

mincharge = 1e29;
maxcharge = 0;

// --- Prime loop with first input value
cin >> productch;

// --- Processing loop - stops when product code is sentinel 'Z'
 
	while (productch != 'Z')
	{
		totalorders++;
		cin.get(dummych);               // skip blank in column 2
		cin.get(classch);               // get char in column 3, even if blank
		cin >> amtordered >> distance;  // remainder of input in normal fashion
		errorincodes = false;           // set flag - no error found yet!


// --- switch statements to validate codes, set unit cost and count product types go here
		switch( productch )
		{
			case 'C':	switch( classch )
					{
						case ' ':	unitcost = 52.60;
								concretecount++;
								break;
						default:	errorincodes = true; 
								break;
					}
		      			break;
	 		case 'R':	switch( classch )
					{
						case 'C':	unitcost = 22.25;
								gravelcount++;
								break;
						case 'G':	unitcost = 16.50;
								gravelcount++;
								break;
						case 'D':	unitcost = 35.00;
								gravelcount++;
								break;
						default: 	errorincodes = true;
								break;
					}
					break;
			case 'S':	switch( classch )
					{   
						case ' ':	unitcost = 4.35;
								sandcount++;
								break;
						default: 	errorincodes = true;
								break;
					}
					break;
			case 'T':	switch( classch )
					{
						case 'A':	unitcost = 8.25;
								topsoilcount++;
								break;
						case 'B':	unitcost = 6.50;
								topsoilcount++;
								break;
						case 'C':	unitcost = 5.40;
								topsoilcount++;
								break;
						default:	errorincodes = true;
								break;
					}
					break;
		}

// --- now handle detail line


	if (errorincodes)  // codes invalid - no calcs necessary - detail line with error mesg
	{
		cout << "   " << productch << "      \t " << classch << " \t\t " << amtordered;
		cout << " \t\t " << distance;
		cout << "           ------------------- Error - Invalid Codes ------------------" << endl;
		rejectcount++;
	}
	else               // codes valid - calcs, collect summary data, normal detail line
	{
		
		matscost = amtordered * unitcost;
		salestax = matscost * 0.05;

		if (distance <= 5)
			deliverychrge = matscost * 0.015;
		else if (distance < 15)
			deliverychrge = matscost * 0.020;
		else
			deliverychrge = matscost * 0.025;

		deliverychrge = static_cast<int>(deliverychrge * 100 + 0.5)/100.0;
			
		salestax = static_cast<int>(salestax * 100 + 0.5)/100.0;

		total = matscost + deliverychrge + salestax;   

		if (total > maxcharge)
			maxcharge = total;
		if (total < mincharge)
			mincharge = total;

		totalcharge += total;

		matscost = static_cast<int>(matscost * 100 + 0.5)/100.0;


	cout << "   " << productch << " \t\t " << setw(2) << classch << "  \t " << setw(2) << amtordered;
	cout << "   \t " << setw(2) << distance << "   \t $ " << setw(5) << matscost;
	cout << "   \t $ " << setw(5) << deliverychrge << "   \t $ " << setw(5) << salestax;
	cout << "   \t $ " << setw(5) << total << endl;

	}   // end of else 

// get next product code
   cin >> productch;
 }  // end of processing while loop


// --- Now display summary statistics

cout << endl;
cout << endl;
cout << " --------------------------------------------"; 
cout << endl;
cout << "                   Summary                   "; 
cout << endl;
cout << " --------------------------------------------";
cout << "Total number of orders:       " << totalorders << endl;
cout << "Ready-Mix Concrete:           " << concretecount << endl;
cout << "Rock & Gravel:                " << gravelcount << endl;
cout << "Sand:                         " << sandcount << endl;
cout << "Topsoil:                      " << topsoilcount << endl;
cout << "Rejected:                     " << rejectcount << endl;
cout << endl;
cout << endl;
cout << "Total Charges:            $   " << setw(4) << totalcharge << endl;
cout << "Minimum Charge:           $   " << setw(4) << mincharge << endl;
cout << "Maximum Charge:           $   " << setw(4) << maxcharge << endl;
cout << endl;

return 0;

}