#include "account.h"
#include <iostream>
using namespace std;



// present a menu and make sure user enters a valid choice
int menu() {
	int answ;
	// always ask for choice at least once
	do {
		cout << "Choose:" << endl;
		cout << "   1) Deposit 2) Withdrawl 3) Account Balance 4) Quit " << endl;
		cin >> answ;
	}
	while ((answ < 1) || (answ > 4));  // make sure valid
	return answ;
}

// try to find an account number in a an array of accounts
// Given:
//     account number to look for (a string)
//     array of accounts
//     number of accounts in the array
int FindAccount(const string &currentAcct,Account all[],int num) {
	int find = -1;  // default to not found
	// loop through the array
	for (int cnt = 0; cnt < num;cnt++) {
		// see if current account matches the account number we're looking for
		bool here = all[cnt].ThisAcct(currentAcct);
		// if the account number was found return where (we're returning the first place it is found
		//    (we'd like to think that there won't be duplicates)
		if (here) {
			find = cnt;
			return find;
		}
	} // end for
	// if it gets here the account wasn't found - -1 will be returned
	return find;
}


// ask for a number within a range
// not allowing an exit until a valid number is entered
// Given:
//    the lowest valid value
//    the highest valid value
//    the prompt to ask the user (a string)
double GetValid(double low, double high, string prompt) {
	cout << prompt << " (between " << low << " and " << high << ") " << flush;
	int res;
	cin >> res;
	// keep on asking until they give a valid value
	while ((res < low) || (res > high)) {
		cout << "That number was invalid " <<  endl;
		cout << prompt << " (between " << low << " and " << high << ") " << flush;
		cin >> res;
	}
	return res;
}




int main() {

	// build an array of 10 random accounts - each with a 0 balance
   Account all[10];
   cout << "In this dummy bank there are only 10 valid accounts. Work with these: " << endl;
   for (int cnt = 0;cnt < 10;cnt++){
	   // display it
	   cout << "     " << all[cnt] << endl;
   }

   char quit = 'n';

   // loop until the user is ready to quit
   while (quit != 'y') {
	   int index;
	   // ask for account number - loop until account number given exists
	   do {
		   cout << "Enter your account number: " << flush;
		   string currentAcct;
		   cin >> currentAcct;
		   // search whole array of accounts for the entered acct number
		   index = FindAccount(currentAcct,all,10);
	   }
	   while (index < 0);  // stay in as long as acct num not found in array

	   // now we have a valid account and know where it is
	   // ask for customers choice
	   int toDo = menu();
	   // loop until customer says to quit
	   while (toDo != 4) {
		   double amount;
		   bool ok;
		   // handle customers request
		   switch (toDo) {
		   case 1:
			   // deposit - ask for valid amount then do it
			   amount = GetValid(1.0,2000.0,"Please enter the deposit amount ");	 
			   ok = all[index].Deposit(amount); 
			   break;
		   case 2:
			   // withdraw - ask for valid amount then do it
			   amount = GetValid(20.0,200.0,"Please enter the withdrawl amount ");
			   ok = all[index].Withdraw(amount);
			   break;
		   case 3:	 
			   // account inquiry - show status
			   cout << "Your Account " << all[index] << endl;
			   break;
		   }
		   // ask customer for next choice
		   toDo = menu();
	   }

	   // see if user wants to exit
	   //    (loop until they give us a valid answer to the question)
	   do {
		   cout << "Is it time to quit the program? " << flush;
		   cin >> quit;
		   // force all to lower case to simplify while test below
		   if (quit == 'Y')
			   quit = 'y';
		   if (quit == 'N')
			   quit = 'n';
	   }
	   while ((quit != 'n') && (quit != 'y'));
   }  // end outer while
   
   // display all accounts
   cout << "Updated Accounts: " << endl;
   for (int cnt2 = 0;cnt2 < 10;cnt2++){
	   cout << "     " << all[cnt2] << endl;
   }
   cout << "Goodbye!" << endl;

   return 0;

  }