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-rw-r--r--src/main/java/musichub/business/MusicHub.java405
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diff --git a/src/main/java/musichub/business/MusicHub.java b/src/main/java/musichub/business/MusicHub.java
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+++ b/src/main/java/musichub/business/MusicHub.java
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+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 javax.sound.sampled.LineUnavailableException;
+import javax.sound.sampled.UnsupportedAudioFileException;
+import java.io.IOException;
+import java.util.*;
+
+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();
+ }
+ }
+
+ }
+
+ public void searchAudioElement() throws UnsupportedAudioFileException, NoAlbumFoundException, LineUnavailableException, IOException, NoElementFoundException {
+ Scanner scanner = new Scanner(System.in);
+ System.out.println("Entrez le titre ou l'artiste de la musique que vous souhaitez chercher dans la base de données");
+ String word = scanner.next().toLowerCase(Locale.ROOT);
+ List<AudioElement> searchResult = new ArrayList<>();
+ for(AudioElement el : elements){
+ if(el.getTitle().toLowerCase(Locale.ROOT).contains(word) || el.getArtist().toLowerCase(Locale.ROOT).contains(word)){
+ searchResult.add(el);
+ System.out.println(el);
+ }
+ }
+
+ if (searchResult.isEmpty()) {
+ throw new NoElementFoundException("Any result for your search");
+ }
+ if (searchResult.size() == 1) {
+ this.getAudioElement(searchResult, searchResult.get(0).getTitle());
+ }
+ }
+
+ /**
+ * Method getting a list of playlists
+ *
+ * @return a list of playlist titles
+ * @author Anthony BOULANT
+ */
+ public String getPlayListsTitles() {
+ StringBuilder titleList = new StringBuilder();
+
+ for (PlayList pl : playlists)
+ titleList.append(pl.getTitle()).append("\n");
+ return titleList.toString();
+ }
+
+ /**
+ * Method checking the songs contained in a chosen playlist and returning them if found.
+ *
+ * @param playListTitle the title of a (chosen) playlist
+ * @return a list of songs from a playlist
+ * @throws NoPlayListFoundException if the chosen playlist doesn't exist
+ * @author Anthony BOULANT
+ */
+ public List<AudioElement> getPlayListSongs(String playListTitle) throws NoPlayListFoundException {
+ PlayList thePlayList = null;
+ ArrayList<AudioElement> songsInPlayList = new ArrayList<>();
+ for (PlayList pl : playlists) {
+ if (pl.getTitle().equalsIgnoreCase(playListTitle)) {
+ thePlayList = pl;
+ break;
+ }
+ }
+ if (thePlayList == null) throw new NoPlayListFoundException("No playlist with this title in the MusicHub!");
+
+ List<UUID> songIDs = thePlayList.getElements();
+ for (UUID id : songIDs)
+ for (AudioElement el : elements) {
+ if (el instanceof Song) {
+ if (el.getUUID().equals(id)) songsInPlayList.add(el);
+ }
+ }
+ return songsInPlayList;
+
+ }
+} \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 11:03:09 +0000