import java.io.BufferedReader;
import java.io.FileReader;
import java.io.File;
import java.io.FileWriter;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.*;
//import java.security.*;
import java.util.*;

public class Program_logreg {

	public static Scanner userInput1 = new Scanner(System.in); //holds string
	public static Scanner userInput2 = new Scanner(System.in); //holds char


	public static void main(String[] arg) throws IOException{
		System.out.println("Please log in first\n");
		System.out.println("\n-----");
		System.out.println("LOGIN");
		System.out.println("-----");


		Employee temp = null;

		while(true){

			System.out.print("Username: ");
			String username = userInput1.nextLine();

			System.out.print("Password: ");
			String password = userInput1.nextLine();

			temp = ReadFile.getEmployeeInfo(username);

			if(temp == null){
				System.out.println("\nThis username does not exist!\n");
				continue;
			}

			if(!temp.getPassword().equals(password)){
				System.out.println("\nThis password is not correct!\n");
				continue;
			}

			//tempUser.setLoggedIn(true);

			if(temp != null) {
				System.out.println("\nWelcome!\n");
				break;
			}
		}

		if(temp.getRole().equals("Manager")){
			while (true){
				System.out.println("\nDo you want to register new waiter? Y or N? ");
				char choice = userInput2.next().charAt(0);
				if(choice == 'Y'){
					Manager.registerWaiter();

				}else if (choice != 'Y'& choice != 'N'){
					System.out.println("Not a valid option");
				}else{
					break;
				}
			}
			while (true){
				System.out.println("\nDo you want to de-register new waiter? Y or N? ");
				char choice = userInput2.next().charAt(0);
				if(choice == 'Y'){

					Employee remove = null;
					System.out.println("\nWhich waiter (Username) do you want to de-register?");
					String username = userInput1.nextLine();

					//remove = ReadFile.getEmployeeInfo(username);

					try{
						BufferedReader br= new BufferedReader(new FileReader("Employee.txt"));
						String sCurrentLine;
						String[] uCurrentLine = new String[5];
						File f = new File("tempFile.txt");
						PrintWriter wr = new PrintWriter(new BufferedWriter (new FileWriter(f, true)));
						int idCount = -1;
						while((sCurrentLine = br.readLine()) != null){
							uCurrentLine = sCurrentLine.split(";");
							//System.out.println(uCurrentLine[4]);
							if (uCurrentLine.length == 5){
								if(!uCurrentLine[1].toLowerCase().equals(username.toLowerCase())){
										remove = new Employee(Integer.parseInt(uCurrentLine[0]),
												uCurrentLine[1],
												uCurrentLine[2],
												uCurrentLine[3],
												uCurrentLine[4]
												);
										idCount++;
										String tempLine = idCount +";"+ remove.getUsername() +";"+ remove.getName() +";"+ remove.getPassword() + ";" + remove.getRole();
										wr.println(tempLine);
								    }
							}

						}
						wr.close();
						br.close();

						boolean success = (new File("Employee.txt")).delete();
						if (success) {
							File fileNew = new File("Employee.txt");
							f.renameTo(fileNew);
				            //System.out.println("The file has been xóa");
				        }

					}
					catch (IOException e) {
						e.printStackTrace();
					}
				}else if (choice != 'Y'& choice != 'N'){
					System.out.println("Not a valid option");
				}else{
					break;
				}

			}
			//System.out.println("\nDo you want to read the report? Y or N? ");

		}

	}

}