diff options
Diffstat (limited to 'src/main/java/musichub/business')
| -rw-r--r-- | src/main/java/musichub/business/Album.java | 145 | ||||
| -rw-r--r-- | src/main/java/musichub/business/AudioBook.java | 78 | ||||
| -rw-r--r-- | src/main/java/musichub/business/AudioElement.java | 132 | ||||
| -rw-r--r-- | src/main/java/musichub/business/Category.java | 14 | ||||
| -rw-r--r-- | src/main/java/musichub/business/Genre.java | 14 | ||||
| -rw-r--r-- | src/main/java/musichub/business/Language.java | 14 | ||||
| -rw-r--r-- | src/main/java/musichub/business/MusicHub.java | 342 | ||||
| -rw-r--r-- | src/main/java/musichub/business/NoAlbumFoundException.java | 8 | ||||
| -rw-r--r-- | src/main/java/musichub/business/NoElementFoundException.java | 8 | ||||
| -rw-r--r-- | src/main/java/musichub/business/NoPlayListFoundException.java | 8 | ||||
| -rw-r--r-- | src/main/java/musichub/business/PlayList.java | 100 | ||||
| -rw-r--r-- | src/main/java/musichub/business/Song.java | 58 |
12 files changed, 921 insertions, 0 deletions
diff --git a/src/main/java/musichub/business/Album.java b/src/main/java/musichub/business/Album.java new file mode 100644 index 0000000..01fd179 --- /dev/null +++ b/src/main/java/musichub/business/Album.java @@ -0,0 +1,145 @@ +package musichub.business; + +import org.w3c.dom.Document; +import org.w3c.dom.Element; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; + +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.*; + + +public class Album { + private final String title; + private final int lengthInSeconds; + private final UUID uuid; + private String artist; + private Date date; + private ArrayList<UUID> songsUIDs; + + public Album(String title, String artist, int lengthInSeconds, String id, String date, ArrayList<UUID> songsUIDs) { + this.title = title; + this.artist = artist; + this.lengthInSeconds = lengthInSeconds; + this.uuid = UUID.fromString(id); + try { + SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); + this.date = sdf.parse(date); + } catch (ParseException ex) { + ex.printStackTrace(); + } + this.songsUIDs = songsUIDs; + } + + public Album(String title, String artist, int lengthInSeconds, String date) { + this.title = title; + this.artist = artist; + this.lengthInSeconds = lengthInSeconds; + this.uuid = UUID.randomUUID(); + try { + SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); + this.date = sdf.parse(date); + } catch (ParseException ex) { + ex.printStackTrace(); + } + this.songsUIDs = new ArrayList<>(); + } + + public Album(Element xmlElement) throws Exception { + { + this.title = xmlElement.getElementsByTagName("title").item(0).getTextContent(); + this.lengthInSeconds = Integer.parseInt(xmlElement.getElementsByTagName("lengthInSeconds").item(0).getTextContent()); + String uuid = null; + try { + uuid = xmlElement.getElementsByTagName("UUID").item(0).getTextContent(); + } catch (Exception ex) { + System.out.println("Empty album UUID, will create a new one"); + } + if ((uuid == null) || (uuid.isEmpty())) + this.uuid = UUID.randomUUID(); + else this.uuid = UUID.fromString(uuid); + + SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); + this.date = sdf.parse(xmlElement.getElementsByTagName("date").item(0).getTextContent()); + //parse list of songs: + Node songsElement = xmlElement.getElementsByTagName("songs").item(0); + NodeList songUUIDNodes = songsElement.getChildNodes(); + if (songUUIDNodes == null) return; + + this.songsUIDs = new ArrayList<>(); + + for (int i = 0; i < songUUIDNodes.getLength(); i++) { + if (songUUIDNodes.item(i).getNodeType() == Node.ELEMENT_NODE) { + Element songElement = (Element) songUUIDNodes.item(i); + if (songElement.getNodeName().equals("UUID")) { + try { + this.addSong(UUID.fromString(songElement.getTextContent())); + } catch (Exception ex) { + ex.printStackTrace(); + } + } + } + } + } + } + + + public void addSong(UUID song) { + songsUIDs.add(song); + } + + + public List<UUID> getSongs() { + return songsUIDs; + } + + public ArrayList<UUID> getSongsRandomly() { + ArrayList<UUID> shuffledSongs = songsUIDs; + Collections.shuffle(shuffledSongs); + return shuffledSongs; + } + + public String getTitle() { + return title; + } + + public Date getDate() { + return date; + } + + public void createXMLElement(Document document, Element parentElement) { + Element albumElement = document.createElement("album"); + parentElement.appendChild(albumElement); + + Element nameElement = document.createElement("title"); + nameElement.appendChild(document.createTextNode(title)); + albumElement.appendChild(nameElement); + + Element artistElement = document.createElement("artist"); + artistElement.appendChild(document.createTextNode(artist)); + albumElement.appendChild(artistElement); + + Element lengthElement = document.createElement("lengthInSeconds"); + lengthElement.appendChild(document.createTextNode(Integer.valueOf(lengthInSeconds).toString())); + albumElement.appendChild(lengthElement); + + Element UUIDElement = document.createElement("UUID"); + UUIDElement.appendChild(document.createTextNode(uuid.toString())); + albumElement.appendChild(UUIDElement); + + Element dateElement = document.createElement("date"); + SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); + dateElement.appendChild(document.createTextNode(sdf.format(date))); + albumElement.appendChild(dateElement); + + Element songsElement = document.createElement("songs"); + for (UUID currentUUID : this.songsUIDs) { + Element songUUIDElement = document.createElement("UUID"); + songUUIDElement.appendChild(document.createTextNode(currentUUID.toString())); + songsElement.appendChild(songUUIDElement); + } + albumElement.appendChild(songsElement); + + } +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/AudioBook.java b/src/main/java/musichub/business/AudioBook.java new file mode 100644 index 0000000..80392d6 --- /dev/null +++ b/src/main/java/musichub/business/AudioBook.java @@ -0,0 +1,78 @@ +package musichub.business; + +import org.w3c.dom.Document; +import org.w3c.dom.Element; + +public class AudioBook extends AudioElement { + private Language language; + private Category category; + + public AudioBook(String title, String artist, int lengthInSeconds, String uid, String content, String language, String category) { + super(title, artist, lengthInSeconds, uid, content); + this.setLanguage(language); + this.setCategory(category); + } + + public AudioBook(String title, String artist, int lengthInSeconds, String content, String language, String category) { + super(title, artist, lengthInSeconds, content); + this.setLanguage(language); + this.setCategory(category); + } + + public AudioBook(Element xmlElement) { + super(xmlElement); + this.setLanguage(xmlElement.getElementsByTagName("language").item(0).getTextContent()); + this.setCategory(xmlElement.getElementsByTagName("category").item(0).getTextContent()); + } + + public Language getLanguage() { + return this.language; + } + + public void setLanguage(String language) { + switch (language.toLowerCase()) { + default -> this.language = Language.ENGLISH; + case "french" -> this.language = Language.FRENCH; + case "german" -> this.language = Language.GERMAN; + case "spanish" -> this.language = Language.SPANISH; + case "italian" -> this.language = Language.ITALIAN; + } + } + + public Category getCategory() { + return this.category; + } + + public void setCategory(String category) { + switch (category.toLowerCase()) { + default -> this.category = Category.YOUTH; + case "novel" -> this.category = Category.NOVEL; + case "theater" -> this.category = Category.THEATER; + case "documentary" -> this.category = Category.DOCUMENTARY; + case "speech" -> this.category = Category.SPEECH; + } + } + + + public String toString() { + return super.toString() + ", Language = " + getLanguage() + ", Category = " + getCategory() + "\n"; + } + + + public void createXMLElement(Document document, Element parentElement) { + // audiobook element + Element audioBook = document.createElement("audiobook"); + + super.createXMLElement(document, audioBook); + + Element languageElement = document.createElement("language"); + languageElement.appendChild(document.createTextNode(language.getLanguage())); + audioBook.appendChild(languageElement); + + Element categoryElement = document.createElement("category"); + categoryElement.appendChild(document.createTextNode(category.getCategory())); + audioBook.appendChild(categoryElement); + + parentElement.appendChild(audioBook); + } +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/AudioElement.java b/src/main/java/musichub/business/AudioElement.java new file mode 100644 index 0000000..0c1e9e4 --- /dev/null +++ b/src/main/java/musichub/business/AudioElement.java @@ -0,0 +1,132 @@ +package musichub.business; + +import org.w3c.dom.Document; +import org.w3c.dom.Element; + +import java.io.File; +import java.io.IOException; +import java.util.Scanner; +import java.util.UUID; + +import javax.sound.sampled.AudioInputStream; +import javax.sound.sampled.AudioSystem; +import javax.sound.sampled.Clip; +import javax.sound.sampled.LineUnavailableException; +import javax.sound.sampled.UnsupportedAudioFileException; + +public abstract class AudioElement { + protected String title; + protected String artist; + protected int lengthInSeconds; + protected UUID uuid; + protected String content; + + public AudioElement(String title, String artist, int lengthInSeconds, String id, String content) { + this.title = title; + this.artist = artist; + this.lengthInSeconds = lengthInSeconds; + this.uuid = UUID.fromString(id); + this.content = content; + } + + public AudioElement(String title, String artist, int lengthInSeconds, String content) { + this.title = title; + this.artist = artist; + this.lengthInSeconds = lengthInSeconds; + this.content = content; + this.uuid = UUID.randomUUID(); + } + + public AudioElement(Element xmlElement) { + { + title = xmlElement.getElementsByTagName("title").item(0).getTextContent(); + artist = xmlElement.getElementsByTagName("artist").item(0).getTextContent(); + lengthInSeconds = Integer.parseInt(xmlElement.getElementsByTagName("length").item(0).getTextContent()); + content = xmlElement.getElementsByTagName("content").item(0).getTextContent(); + String uuid = null; + try { + uuid = xmlElement.getElementsByTagName("UUID").item(0).getTextContent(); + } catch (Exception ex) { + System.out.println("Empty element UUID, will create a new one"); + } + if ((uuid == null) || (uuid.isEmpty())) + this.uuid = UUID.randomUUID(); + else this.uuid = UUID.fromString(uuid); + } + } + + public UUID getUUID() { + return this.uuid; + } + + public String getArtist() { + return this.artist; + } + + public String getTitle() { + return this.title; + } + + public String toString() { + return "Title = " + this.title + ", Artist = " + this.artist + ", Length = " + this.lengthInSeconds + ", Content = " + this.content; + } + + public void createXMLElement(Document document, Element parentElement) { + Element nameElement = document.createElement("title"); + nameElement.appendChild(document.createTextNode(title)); + parentElement.appendChild(nameElement); + + Element artistElement = document.createElement("artist"); + artistElement.appendChild(document.createTextNode(artist)); + parentElement.appendChild(artistElement); + + Element lengthElement = document.createElement("length"); + lengthElement.appendChild(document.createTextNode(Integer.valueOf(lengthInSeconds).toString())); + parentElement.appendChild(lengthElement); + + Element UUIDElement = document.createElement("UUID"); + UUIDElement.appendChild(document.createTextNode(uuid.toString())); + parentElement.appendChild(UUIDElement); + + Element contentElement = document.createElement("content"); + contentElement.appendChild(document.createTextNode(content)); + parentElement.appendChild(contentElement); + + } + + public void manageAudioElement() throws UnsupportedAudioFileException, IOException, LineUnavailableException { + + Scanner scanner = new Scanner(System.in); + + File file = new File(this.content); + AudioInputStream audioStream = AudioSystem.getAudioInputStream(file); + Clip clip = AudioSystem.getClip(); + clip.open(audioStream); + + String action = ""; + + while(!action.equals("Q")) { + System.out.println("P = Play \b S = Stop \b R = Reset \b Q = Quit"); + System.out.println("Enter your choice"); + action = scanner.next(); + action = action.toUpperCase(); + + switch(action) { + case "S" : clip.stop(); + break; + case "P" : clip.start(); + break; + case "R" : clip.setMicrosecondPosition(0); + break; + case "Q" : clip.stop(); + break; + default : System.out.println("try again"); + } + System.out.println("You stoped the Audio element"); + } + + clip.close(); + + } + +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/Category.java b/src/main/java/musichub/business/Category.java new file mode 100644 index 0000000..f676e51 --- /dev/null +++ b/src/main/java/musichub/business/Category.java @@ -0,0 +1,14 @@ +package musichub.business; + +public enum Category { + YOUTH("youth"), NOVEL("novel"), THEATER("theater"), DOCUMENTARY("documentary"), SPEECH("speech"); + private final String category; + + Category(String category) { + this.category = category; + } + + public String getCategory() { + return category; + } +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/Genre.java b/src/main/java/musichub/business/Genre.java new file mode 100644 index 0000000..18deca6 --- /dev/null +++ b/src/main/java/musichub/business/Genre.java @@ -0,0 +1,14 @@ +package musichub.business; + +public enum Genre { + JAZZ("jazz"), CLASSIC("classic"), HIPHOP("hiphop"), ROCK("rock"), POP("pop"), RAP("rap"); + private final String genre; + + Genre(String genre) { + this.genre = genre; + } + + public String getGenre() { + return genre; + } +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/Language.java b/src/main/java/musichub/business/Language.java new file mode 100644 index 0000000..679e586 --- /dev/null +++ b/src/main/java/musichub/business/Language.java @@ -0,0 +1,14 @@ +package musichub.business; + +public enum Language { + FRENCH("french"), ENGLISH("english"), ITALIAN("italian"), SPANISH("spanish"), GERMAN("german"); + private final String language; + + Language(String language) { + this.language = language; + } + + public String getLanguage() { + return language; + } +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/MusicHub.java b/src/main/java/musichub/business/MusicHub.java new file mode 100644 index 0000000..f7cf137 --- /dev/null +++ b/src/main/java/musichub/business/MusicHub.java @@ -0,0 +1,342 @@ +package musichub.business; + +import musichub.util.XMLHandler; +import org.w3c.dom.Document; +import org.w3c.dom.Element; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; + +import java.io.IOException; +import java.util.*; + +import javax.sound.sampled.LineUnavailableException; +import javax.sound.sampled.UnsupportedAudioFileException; + +class SortByDate implements Comparator<Album> { + public int compare(Album a1, Album a2) { + return a1.getDate().compareTo(a2.getDate()); + } +} + +class SortByGenre implements Comparator<Song> { + public int compare(Song s1, Song s2) { + return s1.getGenre().compareTo(s2.getGenre()); + } +} + +class SortByAuthor implements Comparator<AudioElement> { + public int compare(AudioElement e1, AudioElement e2) { + return e1.getArtist().compareTo(e2.getArtist()); + } +} + +public class MusicHub { + public static final String DIR = System.getProperty("user.dir"); + public static final String ALBUMS_FILE_PATH = DIR + "/files/albums.xml"; + public static final String PLAYLISTS_FILE_PATH = DIR + "/files/playlists.xml"; + public static final String ELEMENTS_FILE_PATH = DIR + "/files/elements.xml"; + private final List<Album> albums; + private final List<PlayList> playlists; + private final List<AudioElement> elements; + private final XMLHandler xmlHandler = new XMLHandler(); + + public MusicHub() { + albums = new LinkedList<>(); + playlists = new LinkedList<>(); + elements = new LinkedList<>(); + this.loadElements(); + this.loadAlbums(); + this.loadPlaylists(); + } + + public void addElement(AudioElement element) { + elements.add(element); + } + + public void addAlbum(Album album) { + albums.add(album); + } + + public void addPlaylist(PlayList playlist) { + playlists.add(playlist); + } + + public void deletePlayList(String playListTitle) throws NoPlayListFoundException { + + PlayList thePlayList = null; + boolean result = false; + for (PlayList pl : playlists) { + if (pl.getTitle().equalsIgnoreCase(playListTitle)) { + thePlayList = pl; + break; + } + } + + if (thePlayList != null) + result = playlists.remove(thePlayList); + if (!result) throw new NoPlayListFoundException("Playlist " + playListTitle + " not found!"); + } + + public Iterator<Album> albums() { + return albums.listIterator(); + } + + public Iterator<PlayList> playlists() { + return playlists.listIterator(); + } + + public Iterator<AudioElement> elements() { + return elements.listIterator(); + } + + public String getAlbumsTitlesSortedByDate() { + StringBuilder titleList = new StringBuilder(); + albums.sort(new SortByDate()); + for (Album al : albums) + titleList.append(al.getTitle()).append("\n"); + return titleList.toString(); + } + + public String getAudiobooksTitlesSortedByAuthor() { + StringBuilder titleList = new StringBuilder(); + List<AudioElement> audioBookList = new ArrayList<>(); + for (AudioElement ae : elements) + if (ae instanceof AudioBook) + audioBookList.add(ae); + audioBookList.sort(new SortByAuthor()); + for (AudioElement ab : audioBookList) + titleList.append(ab.getArtist()).append("\n"); + return titleList.toString(); + } + + public List<AudioElement> getAlbumSongs(String albumTitle) throws NoAlbumFoundException { + Album theAlbum = null; + ArrayList<AudioElement> songsInAlbum = new ArrayList<>(); + for (Album al : albums) { + if (al.getTitle().equalsIgnoreCase(albumTitle)) { + theAlbum = al; + break; + } + } + if (theAlbum == null) throw new NoAlbumFoundException("No album with this title in the MusicHub!"); + + List<UUID> songIDs = theAlbum.getSongs(); + for (UUID id : songIDs) + for (AudioElement el : elements) { + if (el instanceof Song) { + if (el.getUUID().equals(id)) songsInAlbum.add(el); + } + } + return songsInAlbum; + + } + + public List<Song> getAlbumSongsSortedByGenre(String albumTitle) throws NoAlbumFoundException { + Album theAlbum = null; + ArrayList<Song> songsInAlbum = new ArrayList<>(); + for (Album al : albums) { + if (al.getTitle().equalsIgnoreCase(albumTitle)) { + theAlbum = al; + break; + } + } + if (theAlbum == null) throw new NoAlbumFoundException("No album with this title in the MusicHub!"); + + List<UUID> songIDs = theAlbum.getSongs(); + for (UUID id : songIDs) + for (AudioElement el : elements) { + if (el instanceof Song) { + if (el.getUUID().equals(id)) songsInAlbum.add((Song) el); + } + } + songsInAlbum.sort(new SortByGenre()); + return songsInAlbum; + + } + + public void addElementToAlbum(String elementTitle, String albumTitle) throws NoAlbumFoundException, NoElementFoundException { + Album theAlbum = null; + int i; + boolean found = false; + for (i = 0; i < albums.size(); i++) { + if (albums.get(i).getTitle().equalsIgnoreCase(albumTitle)) { + theAlbum = albums.get(i); + found = true; + break; + } + } + + if (found) { + AudioElement theElement = null; + for (AudioElement ae : elements) { + if (ae.getTitle().equalsIgnoreCase(elementTitle)) { + theElement = ae; + break; + } + } + if (theElement != null) { + theAlbum.addSong(theElement.getUUID()); + //replace the album in the list + albums.set(i, theAlbum); + } else throw new NoElementFoundException("Element " + elementTitle + " not found!"); + } else throw new NoAlbumFoundException("Album " + albumTitle + " not found!"); + + } + + public void addElementToPlayList(String elementTitle, String playListTitle) throws NoPlayListFoundException, NoElementFoundException { + PlayList thePlaylist = null; + int i; + boolean found = false; + + for (i = 0; i < playlists.size(); i++) { + if (playlists.get(i).getTitle().equalsIgnoreCase(playListTitle)) { + thePlaylist = playlists.get(i); + found = true; + break; + } + } + + if (found) { + AudioElement theElement = null; + for (AudioElement ae : elements) { + if (ae.getTitle().equalsIgnoreCase(elementTitle)) { + theElement = ae; + break; + } + } + if (theElement != null) { + thePlaylist.addElement(theElement.getUUID()); + //replace the album in the list + playlists.set(i, thePlaylist); + } else throw new NoElementFoundException("Element " + elementTitle + " not found!"); + + } else throw new NoPlayListFoundException("Playlist " + playListTitle + " not found!"); + + } + + private void loadAlbums() { + NodeList albumNodes = xmlHandler.parseXMLFile(ALBUMS_FILE_PATH); + if (albumNodes == null) return; + + for (int i = 0; i < albumNodes.getLength(); i++) { + if (albumNodes.item(i).getNodeType() == Node.ELEMENT_NODE) { + Element albumElement = (Element) albumNodes.item(i); + if (albumElement.getNodeName().equals("album")) { + try { + this.addAlbum(new Album(albumElement)); + } catch (Exception ex) { + System.out.println("Something is wrong with the XML album element"); + } + } + } + } + } + + private void loadPlaylists() { + NodeList playlistNodes = xmlHandler.parseXMLFile(PLAYLISTS_FILE_PATH); + if (playlistNodes == null) return; + + for (int i = 0; i < playlistNodes.getLength(); i++) { + if (playlistNodes.item(i).getNodeType() == Node.ELEMENT_NODE) { + Element playlistElement = (Element) playlistNodes.item(i); + if (playlistElement.getNodeName().equals("playlist")) { + try { + this.addPlaylist(new PlayList(playlistElement)); + } catch (Exception ex) { + System.out.println("Something is wrong with the XML playlist element"); + } + } + } + } + } + + private void loadElements() { + NodeList audioelementsNodes = xmlHandler.parseXMLFile(ELEMENTS_FILE_PATH); + if (audioelementsNodes == null) return; + + for (int i = 0; i < audioelementsNodes.getLength(); i++) { + if (audioelementsNodes.item(i).getNodeType() == Node.ELEMENT_NODE) { + Element audioElement = (Element) audioelementsNodes.item(i); + if (audioElement.getNodeName().equals("song")) { + try { + AudioElement newSong = new Song(audioElement); + this.addElement(newSong); + } catch (Exception ex) { + System.out.println("Something is wrong with the XML song element"); + } + } + if (audioElement.getNodeName().equals("audiobook")) { + try { + AudioElement newAudioBook = new AudioBook(audioElement); + this.addElement(newAudioBook); + } catch (Exception ex) { + System.out.println("Something is wrong with the XML audiobook element"); + } + } + } + } + } + + + public void saveAlbums() { + Document document = xmlHandler.createXMLDocument(); + if (document == null) return; + + // root element + Element root = document.createElement("albums"); + document.appendChild(root); + + //save all albums + for (Iterator<Album> albumsIter = this.albums(); albumsIter.hasNext(); ) { + Album currentAlbum = albumsIter.next(); + currentAlbum.createXMLElement(document, root); + } + xmlHandler.createXMLFile(document, ALBUMS_FILE_PATH); + } + + public void savePlayLists() { + Document document = xmlHandler.createXMLDocument(); + if (document == null) return; + + // root element + Element root = document.createElement("playlists"); + document.appendChild(root); + + //save all playlists + for (Iterator<PlayList> playlistsIter = this.playlists(); playlistsIter.hasNext(); ) { + PlayList currentPlayList = playlistsIter.next(); + currentPlayList.createXMLElement(document, root); + } + xmlHandler.createXMLFile(document, PLAYLISTS_FILE_PATH); + } + + public void saveElements() { + Document document = xmlHandler.createXMLDocument(); + if (document == null) return; + + // root element + Element root = document.createElement("elements"); + document.appendChild(root); + + //save all AudioElements + for (AudioElement currentElement : elements) { + + if (currentElement instanceof Song) { + currentElement.createXMLElement(document, root); + } + if (currentElement instanceof AudioBook) { + currentElement.createXMLElement(document, root); + } + } + xmlHandler.createXMLFile(document, ELEMENTS_FILE_PATH); + } + + public void getAudioElement(List<AudioElement> audios, String elementTitle) throws NoAlbumFoundException, UnsupportedAudioFileException, IOException, LineUnavailableException { + for (AudioElement el : audios) { + if (el.getTitle().equalsIgnoreCase(elementTitle)) { + el.manageAudioElement(); + } + } + + } +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/NoAlbumFoundException.java b/src/main/java/musichub/business/NoAlbumFoundException.java new file mode 100644 index 0000000..04cbfcd --- /dev/null +++ b/src/main/java/musichub/business/NoAlbumFoundException.java @@ -0,0 +1,8 @@ +package musichub.business; + +public class NoAlbumFoundException extends Exception { + + public NoAlbumFoundException(String msg) { + super(msg); + } +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/NoElementFoundException.java b/src/main/java/musichub/business/NoElementFoundException.java new file mode 100644 index 0000000..a9b0d76 --- /dev/null +++ b/src/main/java/musichub/business/NoElementFoundException.java @@ -0,0 +1,8 @@ +package musichub.business; + +public class NoElementFoundException extends Exception { + + public NoElementFoundException(String msg) { + super(msg); + } +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/NoPlayListFoundException.java b/src/main/java/musichub/business/NoPlayListFoundException.java new file mode 100644 index 0000000..c5eb413 --- /dev/null +++ b/src/main/java/musichub/business/NoPlayListFoundException.java @@ -0,0 +1,8 @@ +package musichub.business; + +public class NoPlayListFoundException extends Exception { + + public NoPlayListFoundException(String msg) { + super(msg); + } +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/PlayList.java b/src/main/java/musichub/business/PlayList.java new file mode 100644 index 0000000..4180a62 --- /dev/null +++ b/src/main/java/musichub/business/PlayList.java @@ -0,0 +1,100 @@ +package musichub.business; + +import org.w3c.dom.Document; +import org.w3c.dom.Element; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; + +import java.util.ArrayList; +import java.util.UUID; + +public class PlayList { + private final String title; + private final UUID uuid; + private ArrayList<UUID> elementUUIDs; + + public PlayList(String title, String id, ArrayList<UUID> elementUUIDs) { + this.title = title; + this.uuid = UUID.fromString(id); + this.elementUUIDs = elementUUIDs; + } + + public PlayList(String title) { + this.title = title; + this.uuid = UUID.randomUUID(); + this.elementUUIDs = new ArrayList<>(); + } + + public PlayList(Element xmlElement) { + { + this.title = xmlElement.getElementsByTagName("title").item(0).getTextContent(); + + String uuid = null; + try { + uuid = xmlElement.getElementsByTagName("UUID").item(0).getTextContent(); + } catch (Exception ex) { + System.out.println("Empty playlist UUID, will create a new one"); + } + if ((uuid == null) || (uuid.isEmpty())) + this.uuid = UUID.randomUUID(); + else this.uuid = UUID.fromString(uuid); + + //parse list of elements: + Node elementsElement = xmlElement.getElementsByTagName("elements").item(0); + NodeList elementUUIDNodes = elementsElement.getChildNodes(); + if (elementUUIDNodes == null) return; + + this.elementUUIDs = new ArrayList<>(); + + + for (int i = 0; i < elementUUIDNodes.getLength(); i++) { + if (elementUUIDNodes.item(i).getNodeType() == Node.ELEMENT_NODE) { + Element elementElement = (Element) elementUUIDNodes.item(i); + if (elementElement.getNodeName().equals("UUID")) { + try { + this.addElement(UUID.fromString(elementElement.getTextContent())); + } catch (Exception ex) { + ex.printStackTrace(); + } + } + } + } + } + } + + public void addElement(UUID element) { + elementUUIDs.add(element); + } + + public ArrayList<UUID> getElements() { + return elementUUIDs; + } + + public String getTitle() { + return title; + } + + public void createXMLElement(Document document, Element parentElement) { + Element playlistElement = document.createElement("playlist"); + parentElement.appendChild(playlistElement); + + Element nameElement = document.createElement("title"); + nameElement.appendChild(document.createTextNode(title)); + playlistElement.appendChild(nameElement); + + Element UUIDElement = document.createElement("UUID"); + UUIDElement.appendChild(document.createTextNode(uuid.toString())); + playlistElement.appendChild(UUIDElement); + + + Element elementsElement = document.createElement("elements"); + for (UUID currentUUID : this.elementUUIDs) { + + Element elementUUIDElement = document.createElement("UUID"); + elementUUIDElement.appendChild(document.createTextNode(currentUUID.toString())); + elementsElement.appendChild(elementUUIDElement); + } + playlistElement.appendChild(elementsElement); + } + +}
\ No newline at end of file diff --git a/src/main/java/musichub/business/Song.java b/src/main/java/musichub/business/Song.java new file mode 100644 index 0000000..564b7c5 --- /dev/null +++ b/src/main/java/musichub/business/Song.java @@ -0,0 +1,58 @@ +package musichub.business; + +import org.w3c.dom.Document; +import org.w3c.dom.Element; + + +public class Song extends AudioElement { + private Genre genre; + + public Song(String title, String artist, int length, String uid, String content, String genre) { + super(title, artist, length, uid, content); + this.setGenre(genre); + } + + public Song(String title, String artist, int length, String content, String genre) { + super(title, artist, length, content); + this.setGenre(genre); + } + + public Song(Element xmlElement) { + super(xmlElement); + this.setGenre(xmlElement.getElementsByTagName("genre").item(0).getTextContent()); + } + + public String getGenre() { + return genre.getGenre(); + } + + public void setGenre(String genre) { + switch (genre.toLowerCase()) { + default -> this.genre = Genre.JAZZ; + case "classic" -> this.genre = Genre.CLASSIC; + case "hiphop" -> this.genre = Genre.HIPHOP; + case "rock" -> this.genre = Genre.ROCK; + case "pop" -> this.genre = Genre.POP; + case "rap" -> this.genre = Genre.RAP; + } + } + + public String toString() { + return super.toString() + ", Genre = " + getGenre() + "\n"; + } + + public void createXMLElement(Document document, Element parentElement) { + // song element + Element song = document.createElement("song"); + + super.createXMLElement(document, song); + + Element genreElement = document.createElement("genre"); + genreElement.appendChild(document.createTextNode(genre.getGenre())); + song.appendChild(genreElement); + + parentElement.appendChild(song); + } + + +}
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