/**
 * Program Name: EF_DrinkMachineGUI.java
 * Author: Essam Fahmy
 * Date: August 15, 2022
 * Purpose: A soft drink vending machine GUI that 
 * uses the SoftDrink object to create drink options 
 * with their prices and quantities then calculate 
 * total price, change, and leftover quantity
 * when selling them
 * 
 */

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;

import javax.swing.event.*;


public class EF_DrinkMachineGUI extends JFrame {
	
	private JPanel optionsPanel, paymentPanel, completePanel;
	private ButtonClick detector = new ButtonClick();
	private ArrayList<SoftDrink> list;
	private JRadioButton cokeBtn, spriteBtn, fantaBtn, mountainBtn, rootBtn, redBtn;
	private JTextField amountText, changeText, message;
	private JButton deliverBtn;
	private JLabel header1, header2;
	private ButtonGroup btnGroup;
	private JFrame frame;
	private int index;
	
	
	public EF_DrinkMachineGUI(ArrayList <SoftDrink> list){
		
		
		
		super("Essam's Soft Drink Vending Machine");
		
		
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setLayout(new GridLayout(3, 1));
		this.setSize(500, 400);
		this.setLocationRelativeTo(null);
		this.setResizable(false);
		
		optionsBuild();
		paymentBuild();
		completeBuild();
		
		this.add(optionsPanel);
		this.add(paymentPanel);
		this.add(completePanel);
		
		this.setVisible(true);
	}
	
	
	private void optionsBuild() {
		
		optionsPanel = new JPanel();
		
		optionsPanel.setLayout(new GridLayout(2, 3));
		
		cokeBtn = new JRadioButton("Coke - $1.25", true);
		cokeBtn.setActionCommand("coke");
		
		spriteBtn = new JRadioButton("Sprite - $2.20", false); 
		spriteBtn.setActionCommand("sprite");
		
		fantaBtn = new JRadioButton("Fanta Orange - $1.20", false); 
		fantaBtn.setActionCommand("fanta");
		
		mountainBtn = new JRadioButton("Mountain Dew - $2.35", false); 
		mountainBtn.setActionCommand("mountain");

		rootBtn = new JRadioButton("Root Beer - $1.35", false); 
		rootBtn.setActionCommand("root");

		redBtn = new JRadioButton("Red Pop - $1.85", false); 
		redBtn.setActionCommand("red");

		btnGroup = new ButtonGroup();
		
		btnGroup.add(cokeBtn);
		btnGroup.add(spriteBtn);
		btnGroup.add(fantaBtn);
		btnGroup.add(mountainBtn);
		btnGroup.add(rootBtn);
		btnGroup.add(redBtn);
		
		cokeBtn.addActionListener(detector);
		spriteBtn.addActionListener(detector);
		fantaBtn.addActionListener(detector);
		mountainBtn.addActionListener(detector);
		rootBtn.addActionListener(detector);
		redBtn.addActionListener(detector);
		
		optionsPanel.add(cokeBtn);
		optionsPanel.add(spriteBtn);
		optionsPanel.add(fantaBtn);
		optionsPanel.add(mountainBtn);
		optionsPanel.add(rootBtn);
		optionsPanel.add(redBtn);
	}
	
	private void paymentBuild() {
		
		
		amountText = new JTextField();
		
		changeText = new JTextField();
		
		changeText.setEditable(false);
		
		paymentPanel = new JPanel();
		
		paymentPanel.setLayout(new GridLayout(2, 2));
		
		header1 = new JLabel("Enter Payment Amount:");
		header2 = new JLabel("Change Due:");
		
		paymentPanel.add(header1);
		paymentPanel.add(amountText);
		paymentPanel.add(header2);
		paymentPanel.add(changeText);
		
		
	}
	
	private void completeBuild(){
		
		ButtonClick detector = new ButtonClick();
		
		completePanel = new JPanel();
		
		message = new JTextField();
		
		message.setEditable(false);
		
		deliverBtn = new JButton("Deliver Selection");
		
		deliverBtn.setActionCommand("deliver");
		
		deliverBtn.addActionListener(detector);

		completePanel.setLayout(new GridLayout(2, 1));
		
		completePanel.add(deliverBtn);
		completePanel.add(message);
		
	}
	
	private class ButtonClick implements ActionListener {
		
		

		@Override
		public void actionPerformed(ActionEvent ev) {
			
			if (ev.getActionCommand().equals("coke")) {
				
			}
			
			else if (ev.getActionCommand().equals("coke")) {
				
				if(cokeBtn.isSelected())
				{
					index = 0;
					checkDrinkStatus();
				}
			}
			
			else if (ev.getActionCommand().equals("sprite")) {
				
				if(spriteBtn.isSelected())
				{
					index = 1;
					checkDrinkStatus();
				}
				
			}
			
			else if (ev.getActionCommand().equals("fanta")) {
				
				if(fantaBtn.isSelected())
				{
					index = 2;
					checkDrinkStatus();
				}
				
			}
			
			else if (ev.getActionCommand().equals("mountain")) {
				
				if(mountainBtn.isSelected())
				{
					index = 3;
					checkDrinkStatus();
				}
				
			}
			
			else if (ev.getActionCommand().equals("root")) {
				
				if(rootBtn.isSelected())
				{
					index = 4;
					checkDrinkStatus();
				}
				
			}
			else if (ev.getActionCommand().equals("red")) {
				
				if(redBtn.isSelected())
				{
					index = 5;
					checkDrinkStatus();
				}
				

				}
			}
			
		}
	
private void checkDrinkStatus() {
		
		if(list.get(index).getQuantity() == 0)
		{
			if(index == 0)
			{
				cokeBtn.setEnabled(false);
				message.setText("Sorry! this drink is out of stock, please choose another one.");
			}
			else if(index == 1)
			{
				spriteBtn.setEnabled(false);
				message.setText("Sorry! this drink is out of stock, please choose another one.");
			}
			else if(index == 2)
			{
				fantaBtn.setEnabled(false);
				message.setText("Sorry! this drink is out of stock, please choose another one.");
			}
			else if(index == 3)
			{
				mountainBtn.setEnabled(false);
				message.setText("Sorry! this drink is out of stock, please choose another one.");
			}
			else if(index == 4)
			{
				rootBtn.setEnabled(false);
				message.setText("Sorry! this drink is out of stock, please choose another one.");
			}
			else if(index == 5)
			{
				redBtn.setEnabled(false);
				message.setText("Sorry! this drink is out of stock, please choose another one.");
			}

		}
		if(list.get(index).getQuantity() == 1)
		{
			list.get(index).setQuantity(0);
			
			message.setText("Please enter the payment amount");
			
			if(index == 0)
			{
				cokeBtn.setEnabled(false);
			}
			else if(index == 1)
			{
				spriteBtn.setEnabled(false);
			}
			else if(index == 2)
			{
				fantaBtn.setEnabled(false);
			}
			else if(index == 3)
			{
				mountainBtn.setEnabled(false);
			}
			else if(index == 4)
			{
				rootBtn.setEnabled(false);
			}
			else if(index == 5)
			{
				redBtn.setEnabled(false);
			}
		}
	}
	
	
	
	public static void main (String [] args)
	{
		
		
	     
	      ArrayList<SoftDrink> list = new ArrayList<SoftDrink>();
	      list.add( new SoftDrink("Coke", 1.25, 1) );
	      list.add( new SoftDrink("Sprite", 2.2, 1) );
	      list.add( new SoftDrink("Fanta Orange", 1.2, 1) );
	      list.add( new SoftDrink("Mountain Dew", 2.35, 1) );
	      list.add( new SoftDrink("Root Beer", 1.35, 1) );
	      list.add( new SoftDrink("Red Pop", 1.85, 1) );
	           
	     
	      
	      EF_DrinkMachineGUI frame = new EF_DrinkMachineGUI(list);       
	      
	}//End of main method
}