// -------------------------------------------------------------------------------
// 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,          // the total number of orders
      concretecount,        // the amount of ready-mix concrete orders
      gravelcount,          // the amount of rock and gravel orders
      sandcount,            // the amount of sand orders
      topsoilcount,         // the amount of topsoil orders
      rejectcount,          // the amount of rejected orders
      ordercount,           // the amount of cubic yards ordered
      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;          // the total charge of entired 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 << "                                       Cost of    Cost of                     ";
cout << endl;
cout << "Product   Class   Amount   Distance   Materials   Delivery   Sales Tax   Total";
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')
{
    while (unitcost >= 0)
   {
      if (unitcost > maxcharge)
         maxcharge = unitcost;
      if (unitcost < mincharge)
         mincharge = unitcost;
   }
      

   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':
     cout << "C"; 
      switch(classch)
      {
         case ' ':
            unitcost = 52.60;
            concretecount = totalorders;
            break;
          default:
               errorincodes = true;
      }
      break;
   case 'R':
     gravelcount = totalorders;
     cout << "R";
      switch(classch)
      {
         case 'C':
            unitcost = 22.25;
            cout << "C";
            break;
         case 'G':
            unitcost = 16.50;
            cout << "G";
            break;
         case 'D':
            unitcost = 35.00;
            cout << "D";  
            break;
            default: 
                 errorincodes = true;
      }
      break;
   case 'S':
     sandcount = totalorders;
     cout << "S";
      switch(classch)
      {   
         case ' ':
            unitcost = 4.35;
            break;
            default: 
                 errorincodes = true;
      }
      break;
   case 'T':
     topsoilcount = totalorders;
     cout << "T";
      switch(classch)
      {
         case 'A':
            unitcost = 8.25;
            cout << "A";
            break;
         case 'B':
            unitcost = 6.50;
            cout << "B";
            break;
         case 'C':
            unitcost = 5.40;
            cout << "C";
            break;
            default: 
                 errorincodes = true;
       }
       break;
  }

   // --- now handle detail line

   if (errorincodes)  // codes invalid - no calcs necessary - detail line with error mesg
   {
    cout << "---------------------- Error - Invalid Codes ----------------------";


   }
   else               // codes valid - calcs, collect summary data, normal detail line
   {

      amtordered ++;

      matscost = amtordered * unitcost;
      matscost = static_cast<int>(matscost * 100.0 + .5)/100.0;

      if (distance < 5)
           deliverychrge = matscost * 0.015;
      else if (distance > 5 && distance < 15)
           deliverychrge = matscost * 0.020;
      else if (distance > 15)
           deliverychrge = matscost * 0.025;
      deliverychrge = static_cast<int>(deliverychrge * 100.0 + .5)/100.0;
      totalcharge = matscost + deliverychrge + salestax;   

      totalorders += amtordered;

   }   // end of else 

   cin >> productch;  // get next product code

}  // end of processing while loop

// --- Now display summary statistics 

cout << endl;
cout << "  " << productch;
cout << endl;
cout <<  "        " << classch;
cout << endl;
cout <<  "                 " << ordercount;
cout << endl;
cout <<  "                              "  << distance;
cout << endl;
cout <<  "                                         "  << matscost;
cout << endl;
cout <<  "                                                     " << deliverychrge;
cout << endl;
cout <<  "                                                                    " << salestax;
cout << endl;
cout <<  "                                                                                   " << totalcharge;
cout << endl;


return 0;

}