package com.example;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.application.Platform;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.concurrent.Task;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.chart.PieChart;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.control.ProgressBar;
import javafx.scene.control.TitledPane;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.stage.StageStyle;

public class HTTPClientTest extends Application {
 private List<String> urlList = new CopyOnWriteArrayList<>();
 PieChart chart = new PieChart();
 BorderPane controlLayout = new BorderPane();  
 Label progressText = new Label("Verifying Links.. Pls wait..");
 VBox progressBox = new VBox();  
 ProgressBar bar = new ProgressBar();
 ImageView imageView = new ImageView();
 Button startButton = new Button("Start");
 VBox paneBox = new VBox();
 Button chartButton = new Button("View Chart");
 @Override
 public void start(Stage stage) {
  stage.initStyle(StageStyle.UNDECORATED);
  Group root = new Group();
  Scene scene = new Scene(root, 900, 700);
  stage.setScene(scene);
  stage.setTitle("Link Checker");
  scene.getStylesheets().add("/resources/style/MyStyle.css");
  Rectangle rect = new Rectangle(900, 700);
  rect.setArcHeight(10.0);
  rect.setArcWidth(10.0);
   root.setClip(rect);
   VBox vb = new VBox();
   Button closeButton = new Button();
   closeButton.setId("window-close");
   closeButton.setText("Close Window");
   closeButton.setOnAction(new EventHandler<ActionEvent>() {
    @Override
     public void handle(ActionEvent actionEvent) {
      Platform.exit();  }});
      vb.setSpacing(5);
      controlLayout.setPrefSize(1000, 800);
      controlLayout.setId("cLayout");
      controlLayout.setStyle("-fx-border-color: black;");
      Image image = new Image("resources/images/oraclejava.jpg");
      imageView.setImage(image);
      controlLayout.setCenter(imageView);
      Task task = new Task<Void>() {
      @Override
       public Void call() {
        startButton.setDisable(true);
        ExecutorService executor = Executors.newFixedThreadPool(5);
         try {
            urlList = Files.readAllLines(Paths.get("src/url-list.txt"));
         } catch (IOException ex) {
         Logger.getLogger(HTTPClient.class.getName()).log(Level.SEVERE, null, ex);
         }
        Results.getInstance().setLatch(new CountDownLatch(urlList.size()));
        // urlList.forEach(url -> executor.execute(new HTTPClient(url)));
        updateMessage("Verifying Links .. Please wait..");
        for (int i = 0; i < urlList.size(); i++) {
          executor.execute(new HTTPClient(urlList.get(i)));
          updateProgress(i, urlList.size() - 1);
        }
        updateMessage("Verification Complete..");
        try {
          Results.getInstance().getLatch().await();
        } catch (InterruptedException ex) {
        System.out.println("Interrupted: " + ex.getMessage());
        } finally {
          if (!executor.isShutdown()) {
                executor.shutdown();
	  }
       }
       return null;
     }
 @Override
  protected void succeeded() {
  progressBox.getChildren().remove(startButton);
  progressBox.getChildren().remove(progressText);
  progressBox.getChildren().remove(bar);
  controlLayout.getChildren().remove(imageView);
  double noOfUrls = urlList.size();
  double successPortion = 100 *(Results.getInstance().getSucceededURLList().size() / noOfUrls);
  double brokenPortion = 100 * (Results.getInstance().getFailedURLList().size() / noOfUrls);
  double incorrectPortion = 100 * (Results.getInstance().getIncorrectURLList().size() / noOfUrls);
  ObservableList<PieChart.Data> pieChartData
  = FXCollections.observableArrayList(
  new PieChart.Data("Incorrect URLs (" + Results.getInstance().getIncorrectURLList().size() +
	  ")", incorrectPortion),
  new PieChart.Data("Succeeded URLs (" + Results.getInstance().getSucceededURLList().size() +
	  ")", successPortion),
  new PieChart.Data("Broken URLs (" + Results.getInstance().getFailedURLList().size() + 
	  ")", brokenPortion) );
  chart.setData(pieChartData);
  chart.setTitle("Link Analysis");
  Button details = new Button();
details.setId("details");
details.setText("Click to see Details");
details.setOnAction((ActionEvent e) -> {
details.setDisable(true);
chartButton.setDisable(false);
ListView<String> failedlistView = new ListView<String>();
ListView<String> incorrectlistView = new ListView<String>();
ListView<String> succeededlistView = new ListView<String>();
List failedURLList = Results.getInstance().getFailedURLList();
List incorrectURLList = Results.getInstance().getIncorrectURLList();
List succeededURLList = Results.getInstance().getSucceededURLList();
ObservableList<String> failedItems = FXCollections.observableList(failedURLList);
ObservableList<String> incorrectItems = FXCollections.observableList(incorrectURLList);
ObservableList<String> succeededItems = FXCollections.observableList(succeededURLList);
final int ROW_HEIGHT = 43;
final int ROW_WIDTH = 500;
failedlistView.setItems(failedItems);
failedlistView.setPrefHeight(failedItems.size() * ROW_HEIGHT);
failedlistView.setMaxWidth(ROW_WIDTH);
incorrectlistView.setItems(incorrectItems);
incorrectlistView.setPrefHeight(incorrectItems.size() * ROW_HEIGHT);
incorrectlistView.setMaxWidth(ROW_WIDTH);
succeededlistView.setItems(succeededItems);
succeededlistView.setPrefHeight(succeededItems.size() * ROW_HEIGHT);
succeededlistView.setMaxWidth(ROW_WIDTH);
TitledPane t1 = new TitledPane("Failed", failedlistView);
TitledPane t2 = new TitledPane("Incorrect", incorrectlistView);
TitledPane t3 = new TitledPane("Succeeded", succeededlistView);
int paneSize = paneBox.getChildren().size();
if (paneSize > 0) {
  Node node1 = paneBox.getChildren().get(0);
  Node node2 = paneBox.getChildren().get(1);
  Node node3 = paneBox.getChildren().get(2);
  paneBox.getChildren().remove(node1);	
  paneBox.getChildren().remove(node2);
  paneBox.getChildren().remove(node3); }
  paneBox.getChildren().addAll(t1, t2, t3);
  paneBox.setMaxWidth(ROW_WIDTH);
  progressBox.getChildren().remove(chart);
  progressBox.getChildren().remove(paneBox);
  progressBox.getChildren().add(0, paneBox);  });
  chartButton.setId("chart-button");
  chartButton.setOnAction((ActionEvent event) -> {
      progressBox.getChildren().remove(paneBox);
      progressBox.getChildren().add(0, chart);
      chartButton.setDisable(true);
      details.setDisable(false);
  });
  chartButton.setDisable(true);
  HBox hBox = new HBox(details,chartButton, closeButton);
  hBox.setSpacing(50);
  progressBox.getChildren().addAll(chart, hBox);
  progressBox.setPadding(new Insets(-80, -40, 40, 30));
  }
  };// Close the Task 
    progressBox.setSpacing(60);
    progressBox.getChildren().addAll(progressText);
    controlLayout.setBottom(progressBox);
    Label header = new Label("JavaFX Based Link Checker");
    header.setId("header");
    controlLayout.setTop(header);
    bar.setPrefSize(950, 25);
    bar.progressProperty().bind(task.progressProperty());
    progressText.setId("pText");
    progressText.textProperty().bind(task.messageProperty());
    Thread thread1 = new Thread(task);
    thread1.setName("thread2");
    startButton.setId("startButton");
    startButton.setOnAction((ActionEvent actionEvent) -> {
	progressBox.getChildren().addAll(bar);
	thread1.start();
  });
   progressBox.getChildren().addAll(startButton);
   vb.getChildren().addAll((controlLayout));
   scene.setRoot(vb);
   stage.show();
  }
  public static void main(String[] args) {
    launch(args);
    }
}