import javafx.application.Platform;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
import javafx.fxml.FXML;
import javafx.stage.FileChooser;
import javafx.stage.DirectoryChooser;
import javafx.scene.control.ScrollPane;
import javafx.scene.layout.TilePane;
import javafx.event.ActionEvent;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.KeyCode;
import javafx.scene.input.MouseEvent;
import javafx.scene.image.ImageView;
import javafx.concurrent.Task;
import java.io.*;
import java.lang.Runtime;
import javafx.scene.control.Tooltip;
import javafx.application.Platform;


public class Controller {
    @FXML private ScrollPane stackPane;
    @FXML private TextField pathTxt;
    @FXML private Button fileBttn, clearBttn;
    @FXML private TilePane tilePane;
    @FXML private Label dir;
    private DirectoryChooser folderChooser = new DirectoryChooser();
	 		private FileChooser fileChooser = new FileChooser();
    private Stage fileChrStage = new Stage(), dirChrStage = new Stage();
    private File file, loaded, directory = new File("."), thumbs = new File("thumbs/");
    private File[] filesList, thumbsList;
    private Opener open = new Opener();           // Open book with proper program
    private CleanPath cleaner = new CleanPath();  // Cleans thumbnail names
    private String textAreaPth, filePth;
    private ImageView thumbImgView;
    private Process pb;                           // Process runner
    private Tooltip tooltip;

    @FXML void initialize() {
        folderChooser.setTitle("Open Directory");
        fileChooser.setTitle("Open Epub or Pdf File");
    }

    @FXML void Enter(KeyEvent event) { // on enter in txt field
        if (event.getCode().equals(KeyCode.ENTER))
                getFiles();
    }

    @FXML void setNewDir(MouseEvent event) {
        scanDir();
    }

    @FXML void setJarUse(ActionEvent event) {
        open.setWinSetting();
    }

   void scanDir() {
        tilePane.getChildren().clear();
        textAreaPth = pathTxt.getText();

        if (textAreaPth.isEmpty()) {
            directory = folderChooser.showDialog(dirChrStage);
            if (directory != null) {
                System.out.println("Directory: " + directory);
                filesList = directory.listFiles();
                thumbsList = thumbs.listFiles();
                pathTxt.setText("" + directory);

                 Task getThumb = new Task<Void>() {
                     @Override public Void call() {
                scanDirP2();
                return null;
                }};
                new Thread(getThumb).start();
             } else {
                 System.out.println("No directory selected....");
                 tilePane.getChildren().add(dir);
             }
        }
        else
            directory = new File(textAreaPth);
    }

    void scanDirP2() {
        for (int i=0; i<filesList.length; i++) {
            int found = 0, success = 0;
            final String file = "" + filesList[i],
                         fileName = "" + filesList[i].getName();

            cleaner.cleanThumbPth(fileName);
            String thumbImg = cleaner.returnThumbPth();

            for (int j=0; j<thumbsList.length; j++) {
                 String ref = thumbImg + ".png";
                 if (ref.contains(thumbsList[j].getName())) {
                     found = 1;
                     success = 1;
                 }
            }

            if (found == 0) {
                try {
                    if (filesList[i].getName().toLowerCase().contains(".epub")) {
                        ProcessBuilder pb = new ProcessBuilder("python", "resources/bin/epub-thumbnailer",
                                       file, "thumbs/" + thumbImg + ".png", "300");
                        Process p = pb.start();
                        p.waitFor();
                        success = 1;
                    }
                    else if (filesList[i].getName().toLowerCase().contains(".pdf")) {
                        ProcessBuilder pb = new ProcessBuilder("resources/bin/pdf-thumbnailer", "-scale", "x300",
                                      file + "[0]", "thumbs/" + thumbImg + ".png");
                        Process p = pb.start();
                        p.waitFor();
                        success = 1;
                    }
                    else { System.out.println("Not an understood file type."); }

                } catch(Throwable imgIOErr) {
                    System.out.println(imgIOErr);
                }
            }

            if (success == 1) {
                String imgPth = "thumbs/" + thumbImg + ".png";
                thumbImgView = new ImageView(imgPth);
                tooltip = new Tooltip(fileName);
                tooltip.minHeight(800);
                tooltip.minWidth(800);
                Tooltip.install(thumbImgView, tooltip);

                Platform.runLater(new Runnable() {
                  @Override public void run() {
                tilePane.getChildren().add(thumbImgView);
                  }
                });
                thumbImgView.setFitHeight(300);
                thumbImgView.setFitWidth(200);
                thumbImgView.setCache(true);
                thumbImgView.setOnMouseClicked(mouse -> {
								            if (mouse.getClickCount() == 2 && !mouse.isConsumed()) {
								                mouse.consume();
                        pathTxt.setText(file);
                        getFiles();
       				         }
			             });
            }
        }
    }

    @FXML void openFile(ActionEvent event) { // file bttn click
        getFiles();
    }

    void getFiles() { // opens epub/pdf
        textAreaPth = pathTxt.getText();
        if (textAreaPth.isEmpty()) {
            file = fileChooser.showOpenDialog(fileChrStage);
            pathTxt.setText(textAreaPth = "" + file);
            filePth = pathTxt.getText();
            dir.setText(":Reading:\n" + filePth);
        } else {
            filePth = textAreaPth;
        }
        open.fileOpener(filePth);
    }

    @FXML void clearBttnClick(ActionEvent event) {
        dir.setText("Choose Dir");
        pathTxt.setText("");
        tilePane.getChildren().clear();
        tilePane.getChildren().add(dir);
    }

    @FXML void close(ActionEvent event) {
        Platform.exit();
    }
}