import java.io.File;
import java.io.IOException;

import org.jcodec.api.JCodecException;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaPlayer.Status;
import javafx.scene.media.MediaView;
import javafx.stage.Stage;
import javafx.stage.FileChooser;
import javafx.stage.FileChooser.ExtensionFilter;
//import JCodec.*;


public class Main extends Application implements EventHandler <ActionEvent>{

	public static void main(String[] args) {
		
		launch(args);
	}

	
	MediaPlayer mediaPlayer, outputPlayer;
	Button play, play2, edit, preview, preview2;
	MediaView mediaView2;

	boolean sceneTwo, edited;

	//@Override //not sure what this does yet
	public void start(Stage primaryStage) throws Exception {
		primaryStage.setTitle("Assignment 4: Video Processor");
		
		//buttons
		play = new Button("\u25B6");
		//play.setTranslateX(0-350);
		play.setTranslateY(420);
		play.setPrefSize(500, 100);
		play.setStyle("-fx-font: 24 arial;");
		
		play2 = new Button("\u25B6");
		play2.setTranslateY(420);
		play2.setPrefSize(500, 100);
		play2.setStyle("-fx-font: 24 arial;");
		
		edit = new Button("Apply Filter (this may take a while)");
		edit.setTranslateX(0-400);
		edit.setTranslateY(420);
		
		preview = new Button("Preview Output");
		preview.setTranslateX(350);
		preview.setTranslateY(420);
		
		preview2 = new Button("Back to input video");
		preview2.setTranslateX(350);
		preview2.setTranslateY(420);
		
		
		//Choosing media file and displaying the media
		File video;
		FileChooser fileChooser = new FileChooser();
		fileChooser.setTitle("Choose File (Currently only supports mp4 files)");
		fileChooser.getExtensionFilters().addAll(new ExtensionFilter("mp4 Video Files", "*.mp4"));
		
		video = fileChooser.showOpenDialog(primaryStage);
		Media media = new Media(video.toURI().toString()); 
		//create the player
		mediaPlayer = new MediaPlayer(media);
		MediaView mediaView = new MediaView(mediaPlayer); 
		
		
		//Play and pause events for play button - explicitly declared in handle function
		play.setOnAction(this::handle);
		//Play and pause events for the play2 button, handling the outputPlayer
		play2.setOnAction(e -> {
			if(edited) {
				if(outputPlayer.getStatus() == Status.PLAYING) {
					outputPlayer.pause();
					play2.setText("\u25B6");
				}
				else {
					outputPlayer.play();
					play2.setText("II");
				}
			}
			else {
				play2.setText("There is no output to display!");
			}
		
		});
		
		//video processing event for the process video button
		edited = false;
		edit.setOnAction(e -> {
			try {
				edit.setText(getFrames.encoded);
				getFrames.editVideo(video);
				edited = true;
				edit.setText("Done!");
			} catch (IOException e1) {
				//Eclipse Auto-generated catch block
				e1.printStackTrace();
			} catch (JCodecException e1) {
				//Eclipse Auto-generated catch block
				e1.printStackTrace();
			}
		});
		
		
		
		//Layout and scene
		StackPane layout = new StackPane();
		layout.getChildren().addAll(mediaView, play, edit, preview);
		Scene scene = new Scene(layout, 1680, 1050);
		
		StackPane layout2 = new StackPane();
		Scene scene2 = new Scene(layout2, 1680, 1050); 
		//scene switching events for preview button
		preview.setOnAction(e -> {
			
			mediaPlayer.pause();
			if(edited) {
				//create the player for the output video
				File output = new File("output.mp4");
				Media outputMedia = new Media(output.toURI().toString());
				outputPlayer = new MediaPlayer(outputMedia);
				mediaView2 = new MediaView(outputPlayer);
				layout2.getChildren().add(mediaView2);
			}
			//mediaView.setMediaPlayer(outputPlayer);
			primaryStage.setScene(scene2);	
		});
		preview2.setOnAction(e -> {
			if(edited) {
				outputPlayer.pause();
			}
			
			//mediaView.setMediaPlayer(mediaPlayer);
			primaryStage.setScene(scene);
			
		});
		layout2.getChildren().addAll(play2, preview2);
		
		
		//putting the scene in the stage and showing the stage
		primaryStage.setScene(scene);
		sceneTwo = false;
		primaryStage.show();

		
		
	}

	@Override
	public void handle(ActionEvent event) {
		
		if(mediaPlayer.getStatus() == Status.PLAYING) {
			mediaPlayer.pause();
			play.setText("\u25B6");
		}
		else {
			mediaPlayer.play();
			play.setText("II");
		}	
		
	}

	

}