import java.util.Scanner;
import java.util.GregorianCalendar;

public class MenuProgram {
	private static void displayAsDollarsAndCents(int cents)
	{
	System.out.print("$" + (cents/100) + "." + (cents%100));
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub


		for (int i = 0; i < 80; i++ ) {
			System.out.print("=");
		}
		System.out.println("\n             FEDERATION UNIVERSITY PHONE BILL COMPARISING SYSTEM");
		System.out.println("\n Developed by Petar Petrov, student ID 30323980 for ITECH1000 Semester 1 2017 \n" );
		for (int i =0; i < 80; i++) {
			System.out.print("=");

		}


			Scanner s = new Scanner(System.in);
			int numOfCalls = 0;
			int exit = 0;
			int dataUsage = 0;
			int sms = 0;
			int callInSec = 0;
			int totalCallInSec = 0;
			int numCallsPrice = 0;
			int priceCallInSec = 0;
			int priceSms = 0;
			int priceData = 0;
			int totalCost = 0;
			int totalCost2 = 0;
			int totalCost3 =0;


			while(exit!=6){
				int exit2 =0;
			System.out.println("\n"
					+"MAIN MENU \n"
					+"Please select an option from the menu: \n"
					+"1. Enter Usage Details \n"
					+"2. Display Cost Under Plan A \n"
					+"3. Display Cost Under Plan B \n"
					+"4. Display Cost Under Plan C \n"
					+"5. Clear Usage Details \n"
					+"6. Exit System \n");

			int input = s.nextInt();
				if (input <1 || input >=7) {
				System.out.println("Value must be between 1 or 6. Please try again: ");
				input = s.nextInt();

				}


			switch (input){

			case 1:
				while (exit2!=4){
					System.out.println(g.getTime());

				System.out.println("ENTER USAGE DETAILS MENU\n"+
                        "Please select an option from the menu:\n"+
                        "1. Phone Call\n"+
                        "2. SMS\n"+
                        "3. Data Usage\n"+
                        "4. Return to main menu\n");

					int usageInput =s.nextInt();

				switch(usageInput){

                case 1:
                	System.out.println("Enter call length in seconds:");
                	callInSec =s.nextInt();
                	while (callInSec<0 && callInSec!=0)	{
     				System.out.println("Value must be positive. Please try again:");
     				callInSec = s.nextInt();
                 }
                	numOfCalls = numOfCalls +1;
                	totalCallInSec = callInSec + totalCallInSec;
                	break;
                case 2:
                	System.out.println("SMS: ");
                	sms =s.nextInt();
                	System.out.println("\nTotal number of messages so far = " +sms);
                	break;
                case 3:
                	System.out.println("Enter the amount of data in MB: ");
                	dataUsage = s.nextInt();
                	while (dataUsage<0 && dataUsage!=0)	{
	     			System.out.println("Value must be positive. Please try again:");
	     			dataUsage = s.nextInt();
	                 }
                	break;
                	default:System.out.println("Return to main menu\n" +(exit2=4));

                	break;
				 }
				}

				break;

				case 2:

					System.out.println("Cost under Plan A");
					for (int i = 0; i < 38; i++ ) {
					System.out.print("=");
					}

					  numCallsPrice = numOfCalls * 23;
		            System.out.print("\n Number of calls = "+numOfCalls+"             ");
		              displayAsDollarsAndCents(numCallsPrice);

		              priceCallInSec = totalCallInSec *2;
					System.out.print("\n Total call time (secs) = "+totalCallInSec+"     ");
					displayAsDollarsAndCents(priceCallInSec);

					priceSms = sms *12;
					System.out.print("\n Number of SMS = "+sms+"              ");
					displayAsDollarsAndCents(priceSms);

					priceData = dataUsage*3;
					System.out.print("\n Data usage (MB) = "+dataUsage+"            ");
					displayAsDollarsAndCents(priceData);

					System.out.println("");

					for (int i = 0; i < 38; i++ ) {
					System.out.print("=");

					}

					totalCost = numCallsPrice + priceCallInSec + priceSms + priceData;
					System.out.print("\n TOTAL COST"+("                     "));
					displayAsDollarsAndCents(totalCost);
					System.out.println("");
					break;
                case 3:

                	System.out.println("Cost under Plan B");
                	for (int i = 0; i < 38; i++ ) {
                	System.out.print("=");
                	}

				  numCallsPrice = numOfCalls * 17;
	            System.out.print("\n Number of calls = "+numOfCalls+"             ");
	              displayAsDollarsAndCents(numCallsPrice);

	              priceCallInSec = totalCallInSec *3;
				System.out.print("\n Total call time (secs) = "+totalCallInSec+"     ");
				displayAsDollarsAndCents(priceCallInSec);

				priceSms = sms *15;
				System.out.print("\n Number of SMS = "+sms+"              ");
				displayAsDollarsAndCents(priceSms);

				priceData = dataUsage*2;
				System.out.print("\n Data usage (MB) = "+dataUsage+"            ");
				displayAsDollarsAndCents(priceData);

				System.out.println("");

				for (int i = 0; i < 38; i++ ) {
				System.out.print("=");

				}

				totalCost2 = numCallsPrice + priceCallInSec + priceSms + priceData;
				System.out.print("\n TOTAL COST"+("                     "));
				displayAsDollarsAndCents(totalCost2);
				System.out.println("");
                break;

                case 4:
                	System.out.println("Cost under Plan C");
					for (int i = 0; i < 38; i++ ) {
					System.out.print("=");
					}

					  numCallsPrice = numOfCalls * 11;
		            System.out.print("\n Number of calls = "+numOfCalls+"             ");
		              displayAsDollarsAndCents(numCallsPrice);

		              priceCallInSec = totalCallInSec *3;
					System.out.print("\n Total call time (secs) = "+totalCallInSec+"     ");
					displayAsDollarsAndCents(priceCallInSec);

					priceSms = sms *9;
					System.out.print("\n Number of SMS = "+sms+"              ");
					displayAsDollarsAndCents(priceSms);
					if (dataUsage <=100) {
					priceData = dataUsage*2;
					System.out.print("\n Data usage (MB) = "+dataUsage+"            ");
					displayAsDollarsAndCents(priceData);
					}
					else {
						priceData = dataUsage*10;
						System.out.print("\n Data usage (MB) = "+dataUsage+"            ");
						displayAsDollarsAndCents(priceData);
					}
					System.out.println("");

					for (int i = 0; i < 38; i++ ) {
					System.out.print("=");

					}

					totalCost = numCallsPrice + priceCallInSec + priceSms + priceData;
					System.out.print("\n TOTAL COST"+("                     "));
					displayAsDollarsAndCents(totalCost);
					System.out.println("");



                case 5: System.out.println("Clear usage details");
                 	numOfCalls = 0;
                 	exit = 0;
    			 	dataUsage = 0;
    			 	sms = 0;
    			 	callInSec = 0;
    			 	totalCallInSec = 0;
    			 	numCallsPrice = 0;
    			 	priceCallInSec = 0;
    			 	priceSms = 0;
    			 	priceData = 0;
    			 	totalCost = 0;
    			 	totalCost2 = 0;
    			 	totalCost3 =0;

    			 	break;
                case 6:
                	for (int i = 0; i < 65; i++ ) {
    					System.out.print("=");

    					}
                	System.out.println("\nThank you for using this software. We hope you found it useful.");
                	for (int i = 0; i < 65; i++ ) {
    					System.out.print("=");

    					}
                	exit=6;
                	break;
                default:System.out.println("The option selected is invalid, try again" );

			}
	}
}
	}