//all imports :
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.*;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Main extends JFrame {

	private JButton read = new JButton("Read File"), // read button
			accept = new JButton("Accept New Student"), // Accept new student button
			printAccepted = new JButton("Print Accepted Students"), // print accepted students button
			printReject = new JButton("Print Rejected Students"), // Print rejected students button
			save = new JButton("Save To File"), // Save to file button
			exit = new JButton("Exit");// Exit button

	private JTextArea text = new JTextArea();// text area

	private JFileChooser file, file2;// file chooser

	private BufferedReader in;// buffer reader

	private LinkedList list = new LinkedList();// list if type linkedList

	private ArrayList<Faculty> faculty = new ArrayList<Faculty>();// array list for the faculties

	private float tawjihiRate;
	private float highSchoolRate;
	private float placementRate;

	private ArrayList<String> accepted = new ArrayList<String>();// ArrayList for accepter students
	private ArrayList<String> rejected = new ArrayList<String>();// ArrayList for rejected students

	public Main() {// Constructor using fields

		JPanel p1 = new JPanel(new GridLayout(6, 1));// JPanel for adding buttons on it
		p1.add(read);//add read button to panel
		p1.add(accept);//add accept button to panel
		p1.add(printAccepted);//add printAccepted button to panel
		p1.add(printReject);//add printReject button to panel
		p1.add(save);//add save button to panel
		p1.add(exit);//add exit button to panel
		add(p1, BorderLayout.WEST);//make the panel at west

		add(text, BorderLayout.CENTER); //make textArea at the center

		exit.addActionListener(new ActionListener() {//Exit button action
			public void actionPerformed(ActionEvent arg0) {
				System.exit(0);
			}
		});

		read.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				file = new JFileChooser();
				file.setDialogTitle("File in Computer");
				file.setAcceptAllFileFilterUsed(true);
				file.setCurrentDirectory(new File("C:\\Users\\soFTech\\Desktop"));
				open();
			}
		});

		printAccepted.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				for (int i = 0; i < accepted.size(); i++) {
					text.append(accepted.get(i) + "\n");
				}
			}
		});

		printReject.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				for (int i = 0; i < rejected.size(); i++) {
					text.append(rejected.get(i) + "\n");
				}
			}
		});

		accept.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				JFrame frame = new JFrame("Accept New Student");
				JTextField name = new JTextField(), taw = new JTextField(), placment = new JTextField(),
						highschool = new JTextField();
				JPanel p1 = new JPanel(new GridLayout(4, 2));
				p1.add(new JLabel("Name"));
				p1.add(name);
				p1.add(new JLabel("Tawjihi Grade"));
				p1.add(taw);
				p1.add(new JLabel("Placement grade"));
				p1.add(placment);
				p1.add(new JLabel("High School Grade"));
				p1.add(highschool);

				JPanel p2 = new JPanel(new GridLayout(1, 2));
				JButton add = new JButton("Add"), cancel = new JButton("Cancle");
				p2.add(add);
				p2.add(cancel);
				frame.add(p2, BorderLayout.SOUTH);

				frame.add(p1, BorderLayout.CENTER);
				frame.setSize(getPreferredSize());
				frame.setVisible(true);
				add.addActionListener(new ActionListener() {
					public void actionPerformed(ActionEvent arg0) {
						try {
							Student temp = new Student(name.getText(), Float.parseFloat(taw.getText()),
									Float.parseFloat(highschool.getText()), Float.parseFloat(placment.getText()));
							frame.setVisible(false);
							float tempTaw = tawjihiRate * temp.getTawjihiGrade();
							float tempPla = placementRate * temp.getPlacmentTestGrade();
							float tempHigh = highSchoolRate * temp.getHighSchoolGrade();
							temp.setFinalGrade(tempTaw + tempPla + tempHigh);
							int count = 0;
							for (int i = 0; i < faculty.size(); i++) {
								if (compaire((int) faculty.get(i).min, (int) faculty.get(i).max, temp.getFinalGrade())) {
									accepted.add(temp.getName() + "  " + faculty.get(i).name);
									break;
								} else {
									count++;
								}

								if (count == faculty.size()) {
									rejected.add(temp.getName() + "   Rejected");
								}
							}
						} catch (Exception e) {

						}
					}
				});

				cancel.addActionListener(new ActionListener() {
					public void actionPerformed(ActionEvent arg0) {
						frame.setVisible(false);
					}
				});

			}
		});

	}

	public static void main(String[] args) {

		Main frame = new Main();
		frame.setTitle("Project 1");
		frame.setVisible(true);
		frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
		frame.setSize(600, 500);
		frame.setResizable(false);
		frame.setLocationRelativeTo(null);

	}

	private void open() {
		if (file.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
			open(file.getSelectedFile());
		}
	}

	private void open1() {
		if (file.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
			open1(file.getSelectedFile());
		}
	}

	private void open(File file) {
		try {
			in = new BufferedReader(new FileReader(file));// open it to read it
															// again
			String str = "";
			while ((str = in.readLine()) != null) {
				String[] temp = str.split(":");
				String name = temp[0];
				float tawjihi = Integer.parseInt(temp[1]);
				float highSchool = Integer.parseInt(temp[2]);
				float placement = Integer.parseInt(temp[3]);

				list.addLast(new Student(name, tawjihi, highSchool, placement));

			}

			text.append("hi");

			file2 = new JFileChooser();
			file2.setDialogTitle("File in Computer");
			file2.setAcceptAllFileFilterUsed(true);
			file2.setCurrentDirectory(new File("C:\\Users\\soFTech\\Desktop"));
			open1();
		} catch (Exception e) {

			JOptionPane.showMessageDialog(this, "Cannot open file", "Problem", 0);

		}
	}

	private void open1(File file) {
		try {
			in = new BufferedReader(new FileReader(file));// open it to read it
															// again
			String str = "";
			tawjihiRate = Float.parseFloat(in.readLine());
			highSchoolRate = Float.parseFloat(in.readLine());
			placementRate = Float.parseFloat(in.readLine());
			int numOfFaculties = Integer.parseInt(in.readLine());
			for (int i = 0; i < numOfFaculties; i++) {
				str = in.readLine();
				String[] temp = str.split(":");
				String name = temp[0];
				String[] range = temp[1].split("-");
				float max = Float.parseFloat(range[1]);
				float min = Float.parseFloat(range[0]);
				faculty.add(new Faculty(name, max, min));
			}

			for (int i = 0; i < faculty.size(); i++) {
				text.append(faculty.get(i).toString() + "\n");
			}

			Node curr = list.first;
			while (curr != null) {
				float tempTaw = tawjihiRate * curr.element.getTawjihiGrade();
				float tempPla = placementRate * curr.element.getPlacmentTestGrade();
				float tempHigh = highSchoolRate * curr.element.getHighSchoolGrade();
				curr.element.setFinalGrade(tempTaw + tempPla + tempHigh);
				curr = curr.next;
			}

			Node curr1 = list.first;
			while (curr1 != null) {
				int count = 0;
				System.out.println(curr1.element.toString());
				for (int i = 0; i < faculty.size(); i++) {
					if (compaire((int) faculty.get(i).min, (int) faculty.get(i).max, curr1.element.getFinalGrade())) {
						accepted.add(curr1.element.getName() + "  " + faculty.get(i).name);
						break;
					} else {
						count++;
					}

					if (count == faculty.size()) {
						rejected.add(curr1.element.getName() + "   Rejected");
					}
				}

				curr1 = curr1.next;

			}

		} catch (Exception e) {

			JOptionPane.showMessageDialog(this, "Cannot open file", "Problem", 0);

		}
	}

	private boolean compaire(int min, int max, double finalGrade) {
		if ((int) finalGrade >= min && (int) finalGrade <= max)
			return true;
		else
			return false;

	}


}