audiomanagershell.commands.FavCommand.java Source code

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Here is the source code for audiomanagershell.commands.FavCommand.java

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/*
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package audiomanagershell.commands;

import audiomanagershell.commands.exceptions.CommandException;
import audiomanagershell.commands.exceptions.FileNotFoundException;
import audiomanagershell.commands.exceptions.NotAFileException;
import audiomanagershell.commands.exceptions.NotAudioFileException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import org.apache.commons.io.FilenameUtils;

/**
 *
 * @author ciprian
 */
public class FavCommand extends Command {

    private final Path favFile;

    public FavCommand(Path appPath, Path reference) {
        super(reference);
        String OS = System.getProperty("os.name").toLowerCase();
        if (OS.equals("windows"))
            favFile = Paths.get(appPath.toString() + "\\" + "favList.txt");
        else
            favFile = Paths.get(appPath.toString() + "/" + "favList");

    }

    @Override
    public void execute() throws CommandException {
        Path file = Paths.get(this.pathRef.toString(), this.arg);

        if (!Files.exists(file))
            throw new FileNotFoundException(file.getFileName().toString());
        if (!Files.isRegularFile(file))
            throw new NotAFileException(file.getFileName().toString());

        List<String> validExtensions = Arrays.asList("wav", "mp3", "flac", "mp4");
        if (!validExtensions.contains(FilenameUtils.getExtension(file.toString())))
            throw new NotAudioFileException(file.toString());

        try (PrintWriter output = new PrintWriter(new FileWriter(favFile.toFile(), true));
                Scanner input = new Scanner(new FileReader(favFile.toString()))) {

            while (input.hasNextLine()) {
                if (input.nextLine().equals(file.toString())) {
                    System.out.printf("File \"%s\" is already added to favorite List!%n", file);
                    return;
                }
            }
            System.out.printf("Added: \"%s\"%n", file);
            output.println(file);
        } catch (IOException ex) {
            throw new CommandException("Error related from I/O to file:" + favFile.toString());
        }
    }

    @Override
    public void init(String args) {
        this.arg = args;
    }
}