//Scott Albaz
// 10/27/10
//Joy Woodworth
//Apps.c
#define _CRT_SECURE_NO_DEPRECATE
#include<stdio.h>


// Displays the list of apps available
//prompts for the user’s selection and sets the value of the selection
void Menu(char *selection);

//sets the cost of the item based on value in selection
void GetCost(char selection, double *item_cost);

//Displays the codes for money input- gets user input amounts
//compares the int codes and updates the bank amount entered
void MoneyMenu(double *bank, double item_cost);

//compares the amount the user has in the bank to the price of item selected.
//It returns 1 if the amount is enough to cover the cost, 0 if there is not enough.
int CheckMoney(double bank, double item_cost);

//uses MoneyMenu function to display and collect dollar amounts from the user
//uses CheckMoney function to keep comparing the added deposited amount to the item cost.
void GetMoney(double *bank, double item_cost, char selection);

//calculates the amount of leftover in the bank
void GetChange(double *bank, double item_cost);

//Asks the user if they want another app
void Quit(char *again);


int main()
{   //declare var
    char firstPurchase= ' ';
    char selection= ' ';
    double item_cost=0.0;
    double bank=0.0;
    char again= 'y';
    //opening message and initial purchase question
    printf("Welcome to the App Store!\n*******************************\nWould you like to make a new purchase?(Y/N):");
    scanf(" %c", &firstPurchase);
    //switch statement for for first purchase result
    switch(firstPurchase)
    {
        case'Y':
        case'y': printf("____________________________________________\n\n");
                 break;

        case'N':
        case'n': return 0;

        default: printf("Invalid Choice. Try Again.");
    }
    //loop if char again = y or Y
    while(again=='y'||again=='Y')
    {
        //function calls
        Menu( &selection);
        GetCost( selection, &item_cost);
        GetMoney(&bank, item_cost, selection);
        Quit(&again);

    }



}

void Menu(char *selection)
{
    //prints choices and asks for input
    printf("HERE ARE YOUUR CHOICES\nG -- GPS Locator   $4.99\nL -- Flashlight   $1.99\nF -- Food Replicator  $15.99\nP -- Game Package  $9.99\n\nPlease ente a selection:");
    scanf(" %c", selection);
}
void GetCost(char selection, double *item_cost)
{
    //sets value to item cost depending on choice
    switch(selection)
    {
    case 'G':
    case 'g':
        *item_cost=4.99;
        break;
    case 'L':
    case 'l':
        *item_cost=1.99;
        break;
    case 'X':
    case 'x':
        *item_cost=12.99;
        break;
    case 'F':
    case 'f':
        *item_cost=15.99;
        break;
    case 'P':
    case 'p':
        *item_cost=9.99;
        break;
    default:
        printf("Invalid Choice.");
    }
}
void GetMoney(double *bank, double item_cost, char selection)
{
    /*problem is in here or in one of the sub-functions*/
    //var to store return val from CheckMoney func.
    int check_money_return=0;
    //loop if bank is not greater than or equal to item_cost
    while(check_money_return==0)
    {
        MoneyMenu(bank, item_cost);
        check_money_return=CheckMoney(*bank, item_cost);

    }


}
void MoneyMenu(double *bank, double item_cost)
{
    //prints money choices and accumulates(?)
    /*I'm not sure I made the accumulator correctly, i may have missed the lesson where you taught this*/

    double bank2=0;
    printf("You have $%.2f in your bank\n\nPlease credit your money by selection:\n--20 $20.00\n--10 $10.00\n--5 $5.00\n--1 $1.00\nDeposit Amount:", bank);
    scanf("%lf", bank2);
    *bank=*bank+bank2;
}

int CheckMoney(double bank, double item_cost)
{
    //compares bank and item_cost
    if(bank>=item_cost)
    {
        printf("This item costs $%.2f.\n\nYou have $%.2f in your bank",bank, item_cost);
        return 1;
    }
    else
    {
        printf("You have $%.2f in your bank. You do NOT have enough money",bank);
        return 0;
    }
}

void Quit(char *again)
{
    //asks for char again
    printf("Would you like to make another purchase?(Y/N)");
    scanf(" %c", again);
}