2 * Sone - ImageImpl.java - Copyright © 2011–2019 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 package net.pterodactylus.sone.data.impl;
19 import static com.google.common.base.Optional.absent;
20 import static com.google.common.base.Optional.fromNullable;
21 import static com.google.common.base.Optional.of;
22 import static com.google.common.base.Preconditions.checkNotNull;
23 import static com.google.common.base.Preconditions.checkState;
25 import java.util.UUID;
27 import net.pterodactylus.sone.data.Album;
28 import net.pterodactylus.sone.data.Image;
29 import net.pterodactylus.sone.data.Sone;
31 import com.google.common.base.Optional;
32 import com.google.common.hash.Hasher;
33 import com.google.common.hash.Hashing;
36 * Container for image metadata.
38 public class ImageImpl implements Image {
40 /** The ID of the image. */
41 private final String id;
43 /** The Sone the image belongs to. */
46 /** The album this image belongs to. */
49 /** The request key of the image. */
52 /** The creation time of the image. */
53 private long creationTime;
55 /** The width of the image. */
58 /** The height of the image. */
61 /** The title of the image. */
64 /** The description of the image. */
65 private String description;
67 /** Creates a new image with a random ID. */
69 this(UUID.randomUUID().toString());
70 this.creationTime = System.currentTimeMillis();
74 * Creates a new image.
79 public ImageImpl(String id) {
80 this.id = checkNotNull(id, "id must not be null");
88 public String getId() {
93 public Sone getSone() {
98 public Album getAlbum() {
103 public Image setAlbum(Album album) {
104 checkNotNull(album, "album must not be null");
105 checkNotNull(album.getSone().equals(getSone()), "album must belong to the same Sone as this image");
111 public String getKey() {
116 public boolean isInserted() {
121 public long getCreationTime() {
126 public int getWidth() {
131 public int getHeight() {
136 public String getTitle() {
141 public String getDescription() {
145 public Modifier modify() throws IllegalStateException {
146 // TODO: reenable check for local images
147 return new Modifier() {
148 private Optional<Sone> sone = absent();
150 private Optional<Long> creationTime = absent();
152 private Optional<String> key = absent();
154 private Optional<String> title = absent();
156 private Optional<String> description = absent();
158 private Optional<Integer> width = absent();
160 private Optional<Integer> height = absent();
163 public Modifier setSone(Sone sone) {
164 this.sone = fromNullable(sone);
169 public Modifier setCreationTime(long creationTime) {
170 this.creationTime = of(creationTime);
175 public Modifier setKey(String key) {
176 this.key = fromNullable(key);
181 public Modifier setTitle(String title) {
182 this.title = fromNullable(title);
187 public Modifier setDescription(String description) {
188 this.description = fromNullable(description);
193 public Modifier setWidth(int width) {
194 this.width = of(width);
199 public Modifier setHeight(int height) {
200 this.height = of(height);
205 public Image update() throws IllegalStateException {
206 checkState(!sone.isPresent() || (ImageImpl.this.sone == null) || sone.get().equals(ImageImpl.this.sone), "can not change Sone once set");
207 checkState(!creationTime.isPresent() || ((ImageImpl.this.creationTime == 0) || (ImageImpl.this.creationTime == creationTime.get())), "can not change creation time once set");
208 checkState(!key.isPresent() || (ImageImpl.this.key == null) || key.get().equals(ImageImpl.this.key), "can not change key once set");
209 if (title.isPresent() && title.get().trim().isEmpty()) {
210 throw new ImageTitleMustNotBeEmpty();
212 checkState(!width.isPresent() || (ImageImpl.this.width == 0) || width.get().equals(ImageImpl.this.width), "can not change width once set");
213 checkState(!height.isPresent() || (ImageImpl.this.height == 0) || height.get().equals(ImageImpl.this.height), "can not change height once set");
215 if (sone.isPresent()) {
216 ImageImpl.this.sone = sone.get();
218 if (creationTime.isPresent()) {
219 ImageImpl.this.creationTime = creationTime.get();
221 if (key.isPresent()) {
222 ImageImpl.this.key = key.get();
224 if (title.isPresent()) {
225 ImageImpl.this.title = title.get();
227 if (description.isPresent()) {
228 ImageImpl.this.description = description.get();
230 if (width.isPresent()) {
231 ImageImpl.this.width = width.get();
233 if (height.isPresent()) {
234 ImageImpl.this.height = height.get();
237 return ImageImpl.this;
243 // FINGERPRINTABLE METHODS
247 public String getFingerprint() {
248 Hasher hash = Hashing.sha256().newHasher();
249 hash.putString("Image(");
250 hash.putString("ID(").putString(id).putString(")");
251 hash.putString("Title(").putString(title).putString(")");
252 hash.putString("Description(").putString(description).putString(")");
254 return hash.hash().toString();
263 public int hashCode() {
264 return id.hashCode();
269 public boolean equals(Object object) {
270 if (!(object instanceof ImageImpl)) {
273 return ((ImageImpl) object).id.equals(id);