#include <iostream.h>
#include <windows.h>
#include <ctype.h>

using namespace std;

int main()
{
    int callchoice = -1;                                                        // Call choice, used to simplify the switch cases
    char option = 0;                                                            // Selecting an option from a menu
    int coinin = -1;                                                            // User entering coins
    int cointotal = 0;                                                          // Total of coins
    char phonein[20];                                                           // Int isn't long enough for mobile number
    int countdown = 0;                                                          // Countdown for time left
    const char CALLTYPES[3][14] =   {   "Local",
                                        "Trunk",
                                        "International",
                                    };
    const int CALLPRICES[3] =   {   20,                                         // Local call
                                    10,                                         // Trunk call
                                    4,                                          // International call
                                };

    system("pause");

    do
    {
        system("cls");
        cout << "\n\n\n\t========== Telephone kiosk Menu ==========" << endl;   // Display menu
        cout << "\tL - Local" << endl;
        cout << "\tT - Trunk" << endl;
        cout << "\tI - International" << endl;
        cout << "\tE - Exit" << endl;
        cout << "\t======================================" << endl;
        cout << "\tPlease enter L, T, I or E to Exit: ";
        cin >> option; option = toupper(option);                                // Get option, in UPPERCASE

        system("cls");                                                          // Clear menu, regardless of choice

        if (option == 'L')      callchoice = 0;                                 // Used for characteristics of call types
        else if (option == 'T') callchoice = 1;                                 // Used for characteristics of call types
        else if (option == 'I') callchoice = 2;                                 // Used for characteristics of call types
        else if (option == 'E') break;                                          // Exit

        if ((callchoice >= 0) && (callchoice <= 2))                             // If it's a valid call choice
        {
            do                                                                  // Taking the coins -- MAKE IT VALIDATE, IF STATEMENT
            {
                cout << "Total entered: " << cointotal << "p\n\n";

                cout << "You have requested a ";
                cout << CALLTYPES[callchoice] << " call.";
                cout << "\nThe charge for this type of call is 10p for ";
                cout << CALLPRICES[callchoice] << " seconds.";

                cout << "\n\nPlease insert your coins now...\n\n";
                cout << "Coin In (Enter 0 to finish): ";
                cin >> coinin;
                if (cin.fail())                                                 // Stops it looping infinitely for letters
                {
                    cin.clear();
                    cin.ignore(numeric_limits<short>::max(),'\n');
                }
                if ((coinin == 5) || (coinin == 10) || (coinin == 20) ||        // Get coin value
                    (coinin == 50) || (coinin == 100))
                {
                    cointotal+=coinin;                                          // Add to total if correct
                }
                system("cls");
            } while (coinin != 0);

            system("cls");

            if (cointotal < 10)                                                 // Less than 10 entered
            {
                cout << "Sorry, you have not entered enough coins. ";
                cout << "Please change call type or enter more.";
            } else {                                                            // More than 10 entered
                cout << "Please enter the number you wish to call.\n";
                cout << "Number: ";
                cin >> phonein;                                                 // Validate?
                system("cls");
                cout << "Now dialling";
                Sleep(2500);
                system("cls");
                for (countdown = (cointotal / 10) * CALLPRICES[callchoice];     // Countdown, time left
                    countdown > 0; countdown--)
                {
                    system("cls");
                    cout << "Connected to " << phonein;
                    cout << " - Please start your conversation";
                    cout << "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n";
                    cout << "\t\t\t\t\t\t\t";
                    cout << "Time Left: " << countdown << " seconds";
                    Sleep(1000);
                }
                system("cls");
                cout << "Sorry, your time is now up. Call disconnected. ";
                break;                                                          // Exit, call finished!
            }
        }
        option = 0;                                                             // Reset option to loop back to menu, invalid entry
    } while (option != 'E');                                                    // If option == E, exit application

    cout << "Exiting.";
    Sleep(5000);
    return 0;
}