/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package com.megatim.fdxconvert.controller;

import com.megatim.module.encryption.impl.AESImpl;
import com.megatimfx.common.abstracts.AbstractEditDialogController;
import com.megatimfx.common.utils.ViewLoaderUtil;
import com.megatimfx.components.customdialogs.AlertMessageUtil;
import com.megatimfx.components.customdialogs.LoadinIndicatorDialogUtil;
import com.megatimfx.components.dialogs.NotificationDialog;
import com.megatimfx.components.dialogs.NotificationType;
import com.megatim.fdxconvert.forms.DecryptageAESEditFormController;
import com.megatim.fdxconvert.pojo.DecryptageAES;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.concurrent.Task;
import javafx.event.ActionEvent;
import javafx.scene.Node;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

/**
 *
 * @author STEPHANIE
 */
public class DecryptageAESEditDialogController extends AbstractEditDialogController<DecryptageAES> {

    private DecryptageAESEditFormController decryptageAESEditFormController;

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        decryptageAESEditFormController = new DecryptageAESEditFormController();
        super.initialize(url, rb);
    }

    @Override
    public String getTitle() {
        getEditButton().setText("Décrypter");
        return "Décryptage d'un fichier";
    }

    @Override
    public Pane getContentFormPane() throws IOException {
        return ViewLoaderUtil.getPaneFromFxmlFile(decryptageAESEditFormController.getClass().getResource("DecryptageAESEditForm.fxml"), decryptageAESEditFormController);
    }

    @Override
    public Object getContentFormController() {
        return decryptageAESEditFormController;
    }

    @Override
    public boolean beforeSave(ActionEvent event) {
        boolean proceed = super.beforeSave(event);
        boolean proceedKey = getCurrentObject().getKeyToDecrypt().equals(getCurrentObject().getKeyConfirmation());
        proceed = proceed && proceedKey;

        if (!proceedKey) {
            com.megatimfx.common.customdialogs.LoadinIndicatorDialogUtil.getLoadingIndicatorDialog().hide();
            Node source = (Node) event.getSource();
            Stage parentStage = (Stage) source.getScene().getWindow();
            com.megatimfx.common.dialogs.NotificationDialog notificationDialog = new com.megatimfx.common.dialogs.NotificationDialog(
                    "La clé et sa confirmation doivent avoir la même valeur",
                    com.megatimfx.common.dialogs.NotificationType.ERROR,
                    parentStage
            );
            notificationDialog.showNotification();
        }
        return proceed;
    }

    @Override
    public void afterSave(ActionEvent event) {
        DecryptageAES dec = getCurrentObject();
        Task<Void> task = new Task<Void>() {
            @Override
            protected Void call() throws Exception {
                symetricDecrypt(dec);
                return null;
            }
        };

        task.setOnRunning(e -> LoadinIndicatorDialogUtil.getLoadingIndicatorDialog().show());
        task.setOnFailed(e -> {
            LoadinIndicatorDialogUtil.getLoadingIndicatorDialog().hide();
            Throwable th = task.getException();
            Node source = (Node) event.getSource();
            Stage parentStage = (Stage) source.getScene().getWindow();

            if (th instanceof javax.crypto.BadPaddingException || th instanceof java.security.spec.InvalidKeySpecException
                    || th instanceof java.security.InvalidKeyException) {
                NotificationDialog notificationDialog = new NotificationDialog(
                        "Echec décryptage : La clé fournie n'est pas la bonne ",
                        NotificationType.ERROR,
                        parentStage
                );
                notificationDialog.showNotification();

            } else if (th instanceof javax.crypto.IllegalBlockSizeException) {
                NotificationDialog notificationDialog = new NotificationDialog(
                        "Echec décryptage : Ce fichier n'est pas crypté avec l'alogorithme AES ",
                        NotificationType.ERROR,
                        parentStage
                );
                notificationDialog.showNotification();
            } else {
                AlertMessageUtil.showAlertException(task.getException(), "Une exception s'est produite pendant le décryptage du fichier", "Erreur");
            }
        });

        task.setOnSucceeded(e -> {
            LoadinIndicatorDialogUtil.getLoadingIndicatorDialog().hide();
            Node source = (Node) event.getSource();
            Stage parentStage = (Stage) source.getScene().getWindow();
            NotificationDialog notificationDialog = new NotificationDialog(
                    "Décryptage du fichier réussie",
                    NotificationType.SUCCESS,
                    parentStage
            );
            notificationDialog.showNotification();
        });
        new Thread(task).start();
    }

    private void symetricDecrypt(DecryptageAES dec) throws Exception {
        AESImpl aes = new AESImpl();
        File inputFile = new File(dec.getFilePath());
        File outputFile = new File(dec.getOutputDir(), inputFile.getName());
        aes.decryptFile(dec.getKeyToDecrypt(), dec.getKeyLength(), dec.getFilePath(), outputFile.getAbsolutePath());
    }
}