X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2FAlbumImpl.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2FAlbumImpl.java;h=f489b0b09548adde4bc654d4a76806e6483b2e39;hp=0000000000000000000000000000000000000000;hb=f4f5fb752ff9aff0235a907e170c6961576562f6;hpb=7017646bf42cb265b6df539bb6def40b91d2f968

diff --git a/src/main/java/net/pterodactylus/sone/data/AlbumImpl.java b/src/main/java/net/pterodactylus/sone/data/AlbumImpl.java
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+++ b/src/main/java/net/pterodactylus/sone/data/AlbumImpl.java
@@ -0,0 +1,380 @@
+/*
+ * Sone - Album.java - Copyright © 2011–2013 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.data;
+
+import static com.google.common.base.Optional.absent;
+import static com.google.common.base.Optional.fromNullable;
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.base.Preconditions.checkState;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+
+import com.google.common.base.Function;
+import com.google.common.base.Optional;
+import com.google.common.base.Predicates;
+import com.google.common.collect.Collections2;
+import com.google.common.hash.Hasher;
+import com.google.common.hash.Hashing;
+
+/**
+ * Container for images that can also contain nested {@link AlbumImpl}s.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class AlbumImpl implements Album {
+
+	/** The ID of this album. */
+	private final String id;
+
+	/** The Sone this album belongs to. */
+	private Sone sone;
+
+	/** Nested albums. */
+	private final List<Album> albums = new ArrayList<Album>();
+
+	/** The image IDs in order. */
+	private final List<String> imageIds = new ArrayList<String>();
+
+	/** The images in this album. */
+	private final Map<String, Image> images = new HashMap<String, Image>();
+
+	/** The parent album. */
+	private Album parent;
+
+	/** The title of this album. */
+	private String title;
+
+	/** The description of this album. */
+	private String description;
+
+	/** The ID of the album picture. */
+	private String albumImage;
+
+	/** Creates a new album with a random ID. */
+	public AlbumImpl() {
+		this(UUID.randomUUID().toString());
+	}
+
+	/**
+	 * Creates a new album with the given ID.
+	 *
+	 * @param id
+	 * 		The ID of the album
+	 */
+	public AlbumImpl(String id) {
+		this.id = checkNotNull(id, "id must not be null");
+	}
+
+	//
+	// ACCESSORS
+	//
+
+	@Override
+	public String getId() {
+		return id;
+	}
+
+	@Override
+	public Sone getSone() {
+		return sone;
+	}
+
+	@Override
+	public Album setSone(Sone sone) {
+		checkNotNull(sone, "sone must not be null");
+		checkState((this.sone == null) || (this.sone.equals(sone)), "album owner must not already be set to some other Sone");
+		this.sone = sone;
+		return this;
+	}
+
+	@Override
+	public List<Album> getAlbums() {
+		return new ArrayList<Album>(albums);
+	}
+
+	@Override
+	public void addAlbum(Album album) {
+		checkNotNull(album, "album must not be null");
+		checkArgument(album.getSone().equals(sone), "album must belong to the same Sone as this album");
+		album.setParent(this);
+		if (!albums.contains(album)) {
+			albums.add(album);
+		}
+	}
+
+	@Override
+	public void removeAlbum(Album album) {
+		checkNotNull(album, "album must not be null");
+		checkArgument(album.getSone().equals(sone), "album must belong this album’s Sone");
+		checkArgument(equals(album.getParent()), "album must belong to this album");
+		albums.remove(album);
+		album.removeParent();
+	}
+
+	@Override
+	public Album moveAlbumUp(Album album) {
+		checkNotNull(album, "album must not be null");
+		checkArgument(album.getSone().equals(sone), "album must belong to the same Sone as this album");
+		checkArgument(equals(album.getParent()), "album must belong to this album");
+		int oldIndex = albums.indexOf(album);
+		if (oldIndex <= 0) {
+			return null;
+		}
+		albums.remove(oldIndex);
+		albums.add(oldIndex - 1, album);
+		return albums.get(oldIndex);
+	}
+
+	@Override
+	public Album moveAlbumDown(Album album) {
+		checkNotNull(album, "album must not be null");
+		checkArgument(album.getSone().equals(sone), "album must belong to the same Sone as this album");
+		checkArgument(equals(album.getParent()), "album must belong to this album");
+		int oldIndex = albums.indexOf(album);
+		if ((oldIndex < 0) || (oldIndex >= (albums.size() - 1))) {
+			return null;
+		}
+		albums.remove(oldIndex);
+		albums.add(oldIndex + 1, album);
+		return albums.get(oldIndex);
+	}
+
+	@Override
+	public List<Image> getImages() {
+		return new ArrayList<Image>(Collections2.filter(Collections2.transform(imageIds, new Function<String, Image>() {
+
+			@Override
+			@SuppressWarnings("synthetic-access")
+			public Image apply(String imageId) {
+				return images.get(imageId);
+			}
+		}), Predicates.notNull()));
+	}
+
+	@Override
+	public void addImage(Image image) {
+		checkNotNull(image, "image must not be null");
+		checkNotNull(image.getSone(), "image must have an owner");
+		checkArgument(image.getSone().equals(sone), "image must belong to the same Sone as this album");
+		if (image.getAlbum() != null) {
+			image.getAlbum().removeImage(image);
+		}
+		image.setAlbum(this);
+		if (imageIds.isEmpty() && (albumImage == null)) {
+			albumImage = image.getId();
+		}
+		if (!imageIds.contains(image.getId())) {
+			imageIds.add(image.getId());
+			images.put(image.getId(), image);
+		}
+	}
+
+	@Override
+	public void removeImage(Image image) {
+		checkNotNull(image, "image must not be null");
+		checkNotNull(image.getSone(), "image must have an owner");
+		checkArgument(image.getSone().equals(sone), "image must belong to the same Sone as this album");
+		imageIds.remove(image.getId());
+		images.remove(image.getId());
+		if (image.getId().equals(albumImage)) {
+			if (images.isEmpty()) {
+				albumImage = null;
+			} else {
+				albumImage = images.values().iterator().next().getId();
+			}
+		}
+	}
+
+	@Override
+	public Image moveImageUp(Image image) {
+		checkNotNull(image, "image must not be null");
+		checkNotNull(image.getSone(), "image must have an owner");
+		checkArgument(image.getSone().equals(sone), "image must belong to the same Sone as this album");
+		checkArgument(image.getAlbum().equals(this), "image must belong to this album");
+		int oldIndex = imageIds.indexOf(image.getId());
+		if (oldIndex <= 0) {
+			return null;
+		}
+		imageIds.remove(image.getId());
+		imageIds.add(oldIndex - 1, image.getId());
+		return images.get(imageIds.get(oldIndex));
+	}
+
+	@Override
+	public Image moveImageDown(Image image) {
+		checkNotNull(image, "image must not be null");
+		checkNotNull(image.getSone(), "image must have an owner");
+		checkArgument(image.getSone().equals(sone), "image must belong to the same Sone as this album");
+		checkArgument(image.getAlbum().equals(this), "image must belong to this album");
+		int oldIndex = imageIds.indexOf(image.getId());
+		if ((oldIndex == -1) || (oldIndex >= (imageIds.size() - 1))) {
+			return null;
+		}
+		imageIds.remove(image.getId());
+		imageIds.add(oldIndex + 1, image.getId());
+		return images.get(imageIds.get(oldIndex));
+	}
+
+	@Override
+	public Image getAlbumImage() {
+		if (albumImage == null) {
+			return null;
+		}
+		return Optional.fromNullable(images.get(albumImage)).or(images.values().iterator().next());
+	}
+
+	@Override
+	public boolean isEmpty() {
+		return albums.isEmpty() && images.isEmpty();
+	}
+
+	@Override
+	public boolean isRoot() {
+		return parent == null;
+	}
+
+	@Override
+	public Album getParent() {
+		return parent;
+	}
+
+	@Override
+	public Album setParent(Album parent) {
+		this.parent = checkNotNull(parent, "parent must not be null");
+		return this;
+	}
+
+	@Override
+	public Album removeParent() {
+		this.parent = null;
+		return this;
+	}
+
+	@Override
+	public String getTitle() {
+		return title;
+	}
+
+	@Override
+	public String getDescription() {
+		return description;
+	}
+
+	@Override
+	public Modifier modify() throws IllegalStateException {
+		// TODO: reenable check for local Sones
+		return new Modifier() {
+			private Optional<String> title = absent();
+
+			private Optional<String> description = absent();
+
+			private Optional<String> albumImage = absent();
+
+			@Override
+			public Modifier setTitle(String title) {
+				this.title = fromNullable(title);
+				return this;
+			}
+
+			@Override
+			public Modifier setDescription(String description) {
+				this.description = fromNullable(description);
+				return this;
+			}
+
+			@Override
+			public Modifier setAlbumImage(String imageId) {
+				this.albumImage = fromNullable(imageId);
+				return this;
+			}
+
+			@Override
+			public Album update() throws IllegalStateException {
+				if (title.isPresent()) {
+					AlbumImpl.this.title = title.get();
+				}
+				if (description.isPresent()) {
+					AlbumImpl.this.description = description.get();
+				}
+				if (albumImage.isPresent()) {
+					AlbumImpl.this.albumImage = albumImage.get();
+				}
+				return AlbumImpl.this;
+			}
+		};
+	}
+
+	//
+	// FINGERPRINTABLE METHODS
+	//
+
+	@Override
+	public String getFingerprint() {
+		Hasher hash = Hashing.sha256().newHasher();
+		hash.putString("Album(");
+		hash.putString("ID(").putString(id).putString(")");
+		hash.putString("Title(").putString(title).putString(")");
+		hash.putString("Description(").putString(description).putString(")");
+		if (albumImage != null) {
+			hash.putString("AlbumImage(").putString(albumImage).putString(")");
+		}
+
+		/* add nested albums. */
+		hash.putString("Albums(");
+		for (Album album : albums) {
+			hash.putString(album.getFingerprint());
+		}
+		hash.putString(")");
+
+		/* add images. */
+		hash.putString("Images(");
+		for (Image image : getImages()) {
+			if (image.isInserted()) {
+				hash.putString(image.getFingerprint());
+			}
+		}
+		hash.putString(")");
+
+		hash.putString(")");
+		return hash.hash().toString();
+	}
+
+	//
+	// OBJECT METHODS
+	//
+
+	@Override
+	public int hashCode() {
+		return id.hashCode();
+	}
+
+	@Override
+	public boolean equals(Object object) {
+		if (!(object instanceof AlbumImpl)) {
+			return false;
+		}
+		AlbumImpl album = (AlbumImpl) object;
+		return id.equals(album.id);
+	}
+
+}