import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

public class HotelSystem {

	Map<String, Account> accounts = new HashMap<String, Account>();
	Map<Integer, Room> rooms = new HashMap<Integer, Room>();

	Scanner input;
	Account current;

	//done
	public HotelSystem(){
		current = null;
		input = new Scanner(System.in);
		accounts.put("1-Admin", new Account(1, "Admin", "Admin"));
	}
	//done
	public boolean callCommand(String command){
	    try {
	        Method method = getClass().getDeclaredMethod("command"+command);
	        method.invoke(this);
	        return true;
	    } catch (Exception e) {
	    	System.out.println("- Unknown Command");
	    	return false;
	    }
	}
    //done
	public boolean verifyCredentials(String test){
		return (current.rank.equals(test) ? true : false);
	}
	//done
	public boolean verifyCredentials(String test1, String test2){
		return (current.rank.equals(test1) || current.rank.equals(test2) ? true : false);
	}
    //done
    public int testIntParse(String string){

    	int test;

    	try{
    		test = Integer.parseInt(string);
    		return test;
    	}
		catch (Exception e){
			return -1;
		}
    }
    //done
    public boolean testDate(String test, SimpleDateFormat format){
    	try{
    		Date date = format.parse(test);
    		return true;
    	} catch (Exception e) {
    		return false;
    	}
    }
    //done
    public void commandLI(){

    	if(current != null){
    		System.out.println("- There is an active account");
    		return;
    	}

    	System.out.print("+ Employee Number : ");
    	String user = input.nextLine();

    	System.out.print("+ password : ");
    	String password = input.nextLine();

    	if(login(user, password)){
        	System.out.println("+ Logged In Sucessfully");
        }
        else{
        	System.out.println("- Login Failed!");
        }
    }
    //done
    public boolean commandSR(){

    	if(verifyCredentials("Gestor", "Balcao")){
    		System.out.println("-------------------------------------------");
    		System.out.println("[Showing All Rooms]\n");
            for(int i = 1; i <= rooms.size(); i++){
                System.out.println(rooms.get(i));
            }
            return true;
    	}
    	else{
    		System.out.println("- Permission Denied");
    		return false;
    	}
    }
    //Create Account
    public boolean commandCA(){

    	if(verifyCredentials("Gestor", "Admin")){

    		System.out.print("+ Employers Number : ");
	        int user = testIntParse(input.nextLine());

	        if(user < 1){
	        	System.out.println("- Invalid Number");
	        	return false;
	        }

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

	        System.out.println("+ Available Ranks (Gestor, Limpeza, Balcao)");
	        System.out.print("+ Rank : ");

	        String rank = input.nextLine();
	        if(rank.equals("Gestor") || rank.equals("Limpeza") || rank.equals("Balcao")){
	        	createAccount(user, password, rank);
		        System.out.println("+ Account created sucessfully");
		        return true;
	        }
	        System.out.println("- Unknown Rank");
	        return false;

    	}
    	else{
    		System.out.println("- Permission Denied");
    		return false;
    	}
    }
    //Update Room
    public void commandUR(){

    	if(verifyCredentials("Gestor")){

    		System.out.print("+ Room Number : ");
    		int roomNum = testIntParse(input.nextLine());

    		if(roomNum < 1 || roomNum > rooms.size()){
    			System.out.println("- Invalid Room Number :");
    			return;
    		}

    		System.out.println("+ Number of beds : ");
    		int numBeds = testIntParse(input.nextLine());

    		if(numBeds < 1){
    			System.out.println("- Invalid Beds Number");
    			return;
    		}

    		System.out.print("+ Single | Couple : ");
    		String type = input.nextLine();

    		if(type.equals("Single") || type.equals("Couple")){
    			rooms.get(roomNum).beds = numBeds;
    			rooms.get(roomNum).isSingle = (type == "Single" ? true : false);
    			System.out.println("+ [Room Updated]");
    		}
    		else{
    			System.out.println("- Invalid Room Type");
    		}

    	}
    	else{
    		System.out.println("- Permission Denied");
    	}
    }
    //Show Cleanings
    public void commandSC(){
    	if(verifyCredentials("Gestor", "Limpeza")){
    		for(int i = 1; i <= rooms.size(); i++){
    			System.out.println("+ Room " + i + ":  " + (rooms.get(i).lastCleanDate == null ? "Never Cleaned!" : rooms.get(i).lastCleanDate));
    		}
    	}
    	else{
    		System.out.println("- Permission Denied");
    	}
    }
    //Register Cleaning
    public boolean commandRC(){

    	if(verifyCredentials("Gestor", "Limpeza")){

    		System.out.print("+ Room number:");
    		int roomNum = testIntParse(input.nextLine());

    		if(roomNum < 1 || roomNum > rooms.size()){
    			System.out.println("- Invalid Room Number");
    			return false;
    		}

    		System.out.println("Date in format dd/MM/yyyy HH:mm");
    		String testDate = input.nextLine();

    		if(!testDate(testDate, new SimpleDateFormat("yyyy/MM/dd HH:mm:ss"))){
    			System.out.println("- Invalid Date Format");
    			return false;
    		}

			rooms.get(roomNum).lastCleanDate = testDate;
			return true;
    	}
    	else{
    		System.out.println("- Permission Denied");
    		return false;
    	}
    }
    //List Reservations
    public boolean commandLR(){

    	if(verifyCredentials("Gestor", "Balcao")){
    		for(int i = 1; i <= rooms.size(); i++){
    			if(rooms.get(i).res != null){
    				System.out.println("+ --------------------------------------- +");
    				System.out.println("+ Room " + i + ":");
    				System.out.println(  "+ Entry Date :" + rooms.get(i).res.entryDate);
    				System.out.println(  "+ Leave Date :" + rooms.get(i).res.leaveDate);
    				System.out.println(  "+ Client Info :" + rooms.get(i).res.clientName + "  " + rooms.get(i).res.clientNif + "\n");
    			}
    		}
    		return true;
    	}

    	System.out.println("- Permission Denied");
    	return false;
    }
    //Delete Reservation
    public boolean commandDR(){

    	if(verifyCredentials("Gestor", "Balcao")){

    		System.out.println("- Room number:");
    		int roomNum = testIntParse(input.nextLine());

    		if(roomNum > 0 && rooms.get(roomNum) != null){
    			rooms.get(roomNum).removeReservation();
    			System.out.println("+ Reserve Removed Sucessfully");
    			return true;
    		}

    		System.out.println("- Invalid Room Number");
    		return false;
    	}

    	System.out.println("- Permission Denied");
    	return false;
    }

    public void commandMR() throws ParseException{
    	if(current.rank.equals("Gestor") || current.rank.equals("Balcao")){
    		input = new Scanner(System.in);
    		System.out.println("Room number:");
    		int roomNum = Integer.parseInt(input.nextLine());
    		if(rooms.get(roomNum) != null){
    			System.out.println("Entry Date (dd/MM/yyyy HH:mm):");
    			String entryDate = input.nextLine();
    			System.out.println("Number of nights:");
    			int nights = Integer.parseInt(input.nextLine());
    			System.out.println("Nome do cliente:");
    			String clientName = input.nextLine();
    			System.out.println("Nif do cliente:");
    			int clientNif = Integer.parseInt(input.nextLine());

    			rooms.get(roomNum).res = new Reservation(roomNum, entryDate, nights, clientName, clientNif);
    			rooms.get(roomNum).isFree = false;
    		}
    		else{
    			System.out.println("Invalid room number");
    		}
    	}
    	else{
    		System.out.println("Permission Denied!");
    	}
    }
    //Available Rooms
    public void commandAR(){

    	if(verifyCredentials("Gestor", "Balcao")){

            System.out.println("\nAvailable rooms: \n");

            for(int i = 1; i <= rooms.size(); i++){
                if(rooms.get(i).isFree){
                	System.out.println(rooms.get(i));
                }
            }
        }
    	else{
    		System.out.println("Permission Denied!");
    	}
    }
    //Logout
    public boolean commandLO(){
    	if(current != null){
    		current = null;
    		System.out.println("+ Logged Out Sucessfully");
    		return true;
    	}
    	return false;
    }

	public boolean createAccount(int user, String pwd, String rank){
		return (accounts.put("" + user + "-" + pwd, new Account(user, pwd, rank)) == null ? true : false);
	}

	public boolean login(String user, String pwd){
		if(accounts.get(user + "-" + pwd) == null){
			return false;
		}
		current = accounts.get(user + "-" + pwd);
		return true;
	}
}