package sas.kacper.itemsapp;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import javax.xml.bind.DatatypeConverter;

import javafx.application.Application;

import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.control.PasswordField;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.ButtonType;
import javafx.scene.layout.VBox;
import javafx.scene.layout.HBox;
import javafx.scene.Node;
import javafx.scene.text.Text;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;

import javafx.stage.Stage;

import javafx.event.ActionEvent;
import javafx.event.EventHandler;

import javafx.geometry.Pos;

import sas.kacper.itemsapp.LoginAuthenticator;

public class MainWindow extends Application {
	
	@Override
	public void start(Stage primaryStage) {
		
		VBox mainPane = new VBox(10);
		
		Image iLogo = new Image("file:java.png", true);
		ImageView ivLogo = new ImageView();
		ivLogo.setImage(iLogo);
		
		Text lText = new Text("Nazwa użytkownika");
		Text pText = new Text("Hasło");
		TextField lField = new TextField();
		PasswordField pField = new PasswordField();
		Button bLogin = new Button("Log In!");
		
		bLogin.setOnAction(new EventHandler<ActionEvent>() {
			@Override
			public void handle(ActionEvent e) {
				String userLogin="", userHash="";
				userLogin = lField.getText();
				
				try {
					MessageDigest crypt = MessageDigest.getInstance("MD5");
					crypt.update((pField.getText()).getBytes());
					userHash = (DatatypeConverter.printHexBinary(crypt.digest())).toLowerCase();
				} catch(NoSuchAlgorithmException exc) {
					exc.printStackTrace();
				}
				
				Alert aAlert = new Alert(AlertType.INFORMATION);
				((Stage)aAlert.getDialogPane().getScene().getWindow()).getIcons().add(new Image("file:java.png"));
				aAlert.setContentText("Wszystko ok!");
				aAlert.setTitle("Zalogowany!");
				
				if(!(LoginAuthenticator.checkLogin(userLogin, userHash))) {
					aAlert.setAlertType(AlertType.ERROR);
					aAlert.setContentText("Coś poszło nie tak!");
					aAlert.setTitle("Błąd");
				}
				
				aAlert.setHeaderText(null);
				aAlert.showAndWait();
				
			}
		});
		
		lField.setMaxWidth(250);
		pField.setMaxWidth(250);
		lField.setAlignment(Pos.CENTER);
		pField.setAlignment(Pos.CENTER);
		
		mainPane.setAlignment(Pos.CENTER);
		mainPane.setStyle("-fx-background-color: #FFFFFF;");
		mainPane.getChildren().addAll(ivLogo, new Text(), new Text(), lText, lField, pText, pField, new Text(), bLogin);
		
		Scene mainScene = new Scene(mainPane, 450, 600);
		
		primaryStage.setTitle("Log In!");
		primaryStage.setResizable(false);
		primaryStage.setScene(mainScene);
		primaryStage.getIcons().add(new Image("file:java.png")); 
		primaryStage.show();
		
	}
	
	public static void main(String ... args) {
		launch(args);
	}

}