Song.java

package com.kure.musicplayer.model;


/**
 * Represents a single audio file on the Android system.
 *
 * It's a simple data container, filled with setters/getters.
 *
 * Only mandatory fields are:
 * - id (which is a unique Android identified for a media file
 *       anywhere on the system)
 * - filePath (full path for the file on the filesystem).
 */
public class Song {

	private long id;
	private String filePath;

	/**
	 * Creates a new Song, with specified `songID` and `filePath`.
	 *
	 * @note It's a unique Android identifier for a media file
	 *       anywhere on the system.
	 */
	public Song(long id, String filePath) {
		this.id        = id;
		this.filePath  = filePath;
	}

	/**
	 * Identifier for the song on the Android system.
	 * (so we can locate the file anywhere)
	 */
	public long getId() {
		return id;
	}

	/**
	 * Full path for the music file within the filesystem.
	 */
	public String getFilePath() {
		return filePath;
	}

	// optional metadata

	private String title       = "";
	private String artist      = "";
	private String album       = "";
	private int    year        = -1;
	private String genre       = "";
	private int    track_no    = -1;
	private long   duration_ms = -1;


	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}


	public String getArtist() {
		return artist;
	}
	public void setArtist(String artist) {
		this.artist = artist;
	}


	public String getAlbum() {
		return album;
	}
	public void setAlbum(String album) {
		this.album = album;
	}


	public int getYear() {
		return year;
	}
	public void setYear(int year) {
		this.year = year;
	}


	public String getGenre() {
		return genre;
	}
	public void setGenre(String genre) {
		this.genre = genre;
	}


	public int getTrackNumber() {
		return track_no;
	}
	public void setTrackNumber(int track_no) {
		this.track_no = track_no;
	}

	/**
	 * Sets the duration of the song, in miliseconds.
	 */
	public void setDuration(long duration_ms) {
		this.duration_ms = duration_ms;
	}
	/**
	 * Returns the duration of the song, in miliseconds.
	 */
	public long getDuration() {
		return duration_ms;
	}
	public long getDurationSeconds() {
		return getDuration() / 1000;
	}
	public long getDurationMinutes() {
		return getDurationSeconds() / 60;
	}
}