// SYSC 2002 Winter 2011 Assignment #6
#include "stdstuff.h"
//#include "Date.h" (this is needed at the beginning of Customer.h)
//#include "Customer.h" (this is needed at the beginning of CustomerDB.h)
#include "CustomerDB.h"

// global constant
const int MAXOPT=12;

// mainMenu returns an integer representing the menu option chosen
// Valid values are from 1 to "MAXOPT" (global constant).
int mainMenu(){
   int returnVal;
   for(;;){
      cout << endl;
      cout << "1: Add New Customer" << endl;
      cout << "2: Remove Existing Customer" << endl;
      cout << "3: Print Database Information" << endl;
      cout << "4: Change Existing Customer ID" << endl;
      cout << "5: Change Existing Customer Total" << endl;
      cout << "6: Move Existing Customer Purchase Date" << endl;
      cout << "7: Append Existing Customer Name" << endl;
      cout << "8: Find Lowest Customer ID" << endl;
      cout << "9: Find Best Customer Total" << endl;
      cout << "10: Find First Customer Purchase Date" << endl;
      cout << "11: Find First Customer Name" << endl;
      cout << "12: End Program\n\n"; // always use "max" for ending program
      cout << "Please enter the desired operation [1-" << MAXOPT << "]: ";
      cin >> returnVal;
      //return if valid option, otherwise output error message
      if(returnVal>=1&&returnVal<=MAXOPT)
         return returnVal;
      cout << "Please enter a valid integer option!" << endl;    ;
   }
}


// main program calls the functions most of which you need to write
int main(){
 
   int option;
   int id, newid, numDays, lowID;
   double total, newtotal, maxtotal;
   Date purchase;
   String2002 firstName, name, toAppend;
   
   
   // the Customer database (no customers when we start) -- it uses the default constructor
   CustomerDB ourDB;
   // ourDB.numCusts=0; // this is now done in the default constructor

   for(;;){
      option=mainMenu();
        
      if(option==MAXOPT) break; // end of program
        
      switch(option) {
         case 1: // add new customer
            cout << "Enter customer id, total, purchase date (DD MM YYYY) and name: ";
            cin >> id >> total;
            purchase.read(cin);
            cin.get(); // remove '\n' so getline works
            getline(cin,name,'\n'); // name can now contain spaces (and other special characters)
            if(ourDB.add(Customer(id,total,purchase,name)))
               cout << "Customer added.  There are now: " << ourDB.getNumCusts() << " customers in database.\n";
            else
               cout << "Customer could not be added: already in database or database full.\n";
            break;
              
         case 2: // remove existing Customer
            cout << "Enter customer id: ";
            cin >> id;
            if(ourDB.remove(id))
               cout << "Customer removed.  There are now: " << ourDB.getNumCusts() << " Customers in database.\n";
            else
               cout << "Customer could not be removed: did not exist in database.\n";
            break;
              
         case 3: // print database information, one customer per 2 lines, with total to 2
                 // decimal places
            ourDB.print(); 
            break;
              
         case 4: // change customer id
            cout << "Enter existing customer id, and new customer id: ";
            cin >> id >> newid;
            if(ourDB.changeID(id,newid))
               cout << "customer id successfully updated.\n";
            else
               cout << "Customer could not be updated: did not exist in database or new id in use.\n";
            break;
              
         case 5: // change Customer total
            cout << "Enter customer id, and new Customer total: ";
            cin >> id >> newtotal;
            if(ourDB.changeTotal(id,newtotal))
               cout << "Customer total successfully updated.\n";
            else
               cout << "Customer could not be updated: did not exist in database.\n";
            break;
            
         case 6: // move customer purchase date
            cout << "Enter customer id, and number of days to move purchase date: ";
            cin >> id >> numDays;
            if(ourDB.moveDate(id,numDays))
               cout << "Customer purchase date successfully updated.\n";
            else
               cout << "Cutomer could not be updated: did not exist in database.\n";
            break;
            
         case 7: // append customer name
            cout << "Enter customer id, and string to append to name: ";
            cin >> id >> toAppend;
            if(ourDB.appendName(id,toAppend))
               cout << "Customer name successfully updated.\n";
            else
               cout << "Customer could not be updated: did not exist in database.\n";
            break;
                          
         case 8: // find lowest customer ID (returns -1 if database empty)
            lowID = ourDB.getLowestID();
            if(lowID==-1)
               cout << "No customers: database is empty.\n";
            else
               cout << "Lowest customer ID is: " << lowID << ".\n";
            break;
              
         case 9: // find best customer total
            maxtotal = ourDB.getBestTotal();
            if(maxtotal==-1)
               cout << "No customers: database is empty.\n";
            else
               cout << "Best customer total is: " << maxtotal << ".\n";
            break;
            
         case 10: // output first customer purchase date (31 12 2099 if no customers)
            ourDB.outputFirstDate();
            break;
            
         case 11: // find first customer name (case *insensitive*)
            firstName = ourDB.getFirstName();
            if(firstName=="")
               cout << "No customers: database is empty.\n";
            else
               cout << "First customer name (case insensitive) is: " << firstName << ".\n";
            break;
              
         default: // should never get here
            break;
      }
        
   } 
       
   pause();
   return 0;
}