#include "stdstuff.h"
#include "Date.h"

// "customer" is the struct containing the customer information
// it is made up of id (an integer) and total (a double)
struct customer{
   int id;
   double total;
   Date purchDate;
   String2002 custName;
};

const int MAXCUST=100; // Hint: make MAXCUSTS much smaller to test filling the database

// customerDB is the customer database struct
struct customerDB{
   customer ci[MAXCUST]; // the array of customer information
   int numCusts; // the number of customers currently in the database
};


// add a new customer to the database; returns true if successful, false otherwise
// (database full or customer already exists)
bool addCustomer(int id, double total, const Date &purchase, const String2002 &name, customerDB &db);
  
// remove a customer from the database; returns true if successful, false otherwise (customer
// does not exist)
bool removeCustomer(int id, customerDB &db);

// prints the full customer database (or a note if the database is empty)
// Customers are printed one per two lines, with 2 decimals for the total,
// and purchase date and name on the second line. 
void printCustomerDatabase(const customerDB &db);
     
// change the customer number of an existing customer; returns true if successful, 
// false otherwise (customer does not exist, or new customer id in use)
bool changeCustomerID(int id, int nid, customerDB &db);
     
// change the customer total of an existing customer; returns true if successful, 
// false otherwise (customer does not exist)
bool changeCustomerTotal(int id, double ntotal, customerDB &db);

// move the purchase date by the number of days given; returns true if successful, 
// false otherwise (customer does not exist)
bool moveCustomerDate(int id, int days, customerDB &db);

// append the given String2002 to the customer name; returns true if successful, 
// false otherwise (customer does not exist)
bool appendCustomerName(int id, const String2002 &add, customerDB &db);
     
// returns the highest total of all customers 
// (returns -1 if there are no customers in the database)
double getBestCustomerTotal(const customerDB &db);

// prints (to cout) the earliest purchase date of all customers 
// (prints 1 1 1900 if there are no customers in the database)
void outputFirstCustomerDate(const customerDB &db);

// returns the customer name that's first in case insensitive alphabetical order 
// (returns "" if there are no customers in the database)
String2002 getFirstCustomerName(const customerDB &db);