| 1 | package be.nikiroo.fanfix; |
| 2 | |
| 3 | import java.awt.image.BufferedImage; |
| 4 | import java.io.File; |
| 5 | import java.io.IOException; |
| 6 | import java.net.URL; |
| 7 | import java.util.ArrayList; |
| 8 | import java.util.Collections; |
| 9 | import java.util.List; |
| 10 | |
| 11 | import be.nikiroo.fanfix.data.MetaData; |
| 12 | import be.nikiroo.fanfix.data.Story; |
| 13 | import be.nikiroo.fanfix.output.BasicOutput; |
| 14 | import be.nikiroo.fanfix.output.BasicOutput.OutputType; |
| 15 | import be.nikiroo.fanfix.supported.BasicSupport; |
| 16 | import be.nikiroo.fanfix.supported.BasicSupport.SupportType; |
| 17 | import be.nikiroo.utils.Progress; |
| 18 | |
| 19 | /** |
| 20 | * Manage a library of Stories: import, export, list, modify. |
| 21 | * <p> |
| 22 | * Each {@link Story} object will be associated with a (local to the library) |
| 23 | * unique ID, the LUID, which will be used to identify the {@link Story}. |
| 24 | * <p> |
| 25 | * Most of the {@link BasicLibrary} functions work on a partial (cover |
| 26 | * <b>MAY</b> not be included) {@link MetaData} object. |
| 27 | * |
| 28 | * @author niki |
| 29 | */ |
| 30 | abstract public class BasicLibrary { |
| 31 | /** |
| 32 | * Retrieve the main {@link File} corresponding to the given {@link Story}, |
| 33 | * which can be passed to an external reader or instance. |
| 34 | * <p> |
| 35 | * Do <b>NOT</b> alter this file. |
| 36 | * |
| 37 | * @param luid |
| 38 | * the Library UID of the story |
| 39 | * |
| 40 | * @return the corresponding {@link Story} |
| 41 | */ |
| 42 | public abstract File getFile(String luid); |
| 43 | |
| 44 | /** |
| 45 | * Return the cover image associated to this story. |
| 46 | * |
| 47 | * @param luid |
| 48 | * the Library UID of the story |
| 49 | * |
| 50 | * @return the cover image |
| 51 | */ |
| 52 | public abstract BufferedImage getCover(String luid); |
| 53 | |
| 54 | /** |
| 55 | * Return the list of stories (represented by their {@link MetaData}, which |
| 56 | * <b>MAY</b> not have the cover included). |
| 57 | * |
| 58 | * @param pg |
| 59 | * the optional {@link Progress} |
| 60 | * |
| 61 | * @return the list (can be empty but not NULL) |
| 62 | */ |
| 63 | protected abstract List<MetaData> getMetas(Progress pg); |
| 64 | |
| 65 | /** |
| 66 | * Invalidate the {@link Story} cache (when the content should be re-read |
| 67 | * because it was changed). |
| 68 | */ |
| 69 | protected abstract void clearCache(); |
| 70 | |
| 71 | /** |
| 72 | * Return the next LUID that can be used. |
| 73 | * |
| 74 | * @return the next luid |
| 75 | */ |
| 76 | protected abstract int getNextId(); |
| 77 | |
| 78 | /** |
| 79 | * Delete the target {@link Story}. |
| 80 | * |
| 81 | * @param luid |
| 82 | * the LUID of the {@link Story} |
| 83 | * |
| 84 | * @throws IOException |
| 85 | * in case of I/O error or if the {@link Story} wa not found |
| 86 | */ |
| 87 | protected abstract void doDelete(String luid) throws IOException; |
| 88 | |
| 89 | /** |
| 90 | * Actually save the story to the back-end. |
| 91 | * |
| 92 | * @param story |
| 93 | * the {@link Story} to save |
| 94 | * @param pg |
| 95 | * the optional {@link Progress} |
| 96 | * |
| 97 | * @return the saved {@link Story} (which may have changed, especially |
| 98 | * regarding the {@link MetaData}) |
| 99 | * |
| 100 | * @throws IOException |
| 101 | * in case of I/O error |
| 102 | */ |
| 103 | protected abstract Story doSave(Story story, Progress pg) |
| 104 | throws IOException; |
| 105 | |
| 106 | /** |
| 107 | * Refresh the {@link BasicLibrary}, that is, make sure all stories are |
| 108 | * loaded. |
| 109 | * |
| 110 | * @param full |
| 111 | * force the full content of the stories to be loaded, not just |
| 112 | * the {@link MetaData} |
| 113 | * |
| 114 | * @param pg |
| 115 | * the optional progress reporter |
| 116 | */ |
| 117 | public void refresh(boolean full, Progress pg) { |
| 118 | if (full) { |
| 119 | // TODO: progress |
| 120 | List<MetaData> metas = getMetas(pg); |
| 121 | for (MetaData meta : metas) { |
| 122 | getStory(meta.getLuid(), null); |
| 123 | } |
| 124 | } else { |
| 125 | getMetas(pg); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * List all the known types (sources) of stories. |
| 131 | * |
| 132 | * @return the sources |
| 133 | */ |
| 134 | public synchronized List<String> getSources() { |
| 135 | List<String> list = new ArrayList<String>(); |
| 136 | for (MetaData meta : getMetas(null)) { |
| 137 | String storySource = meta.getSource(); |
| 138 | if (!list.contains(storySource)) { |
| 139 | list.add(storySource); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | Collections.sort(list); |
| 144 | return list; |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * List all the known authors of stories. |
| 149 | * |
| 150 | * @return the authors |
| 151 | */ |
| 152 | public synchronized List<String> getAuthors() { |
| 153 | List<String> list = new ArrayList<String>(); |
| 154 | for (MetaData meta : getMetas(null)) { |
| 155 | String storyAuthor = meta.getAuthor(); |
| 156 | if (!list.contains(storyAuthor)) { |
| 157 | list.add(storyAuthor); |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | Collections.sort(list); |
| 162 | return list; |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * List all the stories in the {@link BasicLibrary}. |
| 167 | * <p> |
| 168 | * Cover images not included. |
| 169 | * |
| 170 | * @return the stories |
| 171 | */ |
| 172 | public synchronized List<MetaData> getList() { |
| 173 | return getMetas(null); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * List all the stories of the given source type in the {@link BasicLibrary} |
| 178 | * , or all the stories if NULL is passed as a type. |
| 179 | * <p> |
| 180 | * Cover images not included. |
| 181 | * |
| 182 | * @param type |
| 183 | * the type of story to retrieve, or NULL for all |
| 184 | * |
| 185 | * @return the stories |
| 186 | */ |
| 187 | public synchronized List<MetaData> getListBySource(String type) { |
| 188 | List<MetaData> list = new ArrayList<MetaData>(); |
| 189 | for (MetaData meta : getMetas(null)) { |
| 190 | String storyType = meta.getSource(); |
| 191 | if (type == null || type.equalsIgnoreCase(storyType)) { |
| 192 | list.add(meta); |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | Collections.sort(list); |
| 197 | return list; |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * List all the stories of the given author in the {@link BasicLibrary}, or |
| 202 | * all the stories if NULL is passed as an author. |
| 203 | * <p> |
| 204 | * Cover images not included. |
| 205 | * |
| 206 | * @param author |
| 207 | * the author of the stories to retrieve, or NULL for all |
| 208 | * |
| 209 | * @return the stories |
| 210 | */ |
| 211 | public synchronized List<MetaData> getListByAuthor(String author) { |
| 212 | List<MetaData> list = new ArrayList<MetaData>(); |
| 213 | for (MetaData meta : getMetas(null)) { |
| 214 | String storyAuthor = meta.getAuthor(); |
| 215 | if (author == null || author.equalsIgnoreCase(storyAuthor)) { |
| 216 | list.add(meta); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | Collections.sort(list); |
| 221 | return list; |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Retrieve a {@link MetaData} corresponding to the given {@link Story}, |
| 226 | * cover image <b>MAY</b> not be included. |
| 227 | * |
| 228 | * @param luid |
| 229 | * the Library UID of the story |
| 230 | * |
| 231 | * @return the corresponding {@link Story} |
| 232 | */ |
| 233 | public synchronized MetaData getInfo(String luid) { |
| 234 | if (luid != null) { |
| 235 | for (MetaData meta : getMetas(null)) { |
| 236 | if (luid.equals(meta.getLuid())) { |
| 237 | return meta; |
| 238 | } |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | return null; |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * Retrieve a specific {@link Story}. |
| 247 | * |
| 248 | * @param luid |
| 249 | * the Library UID of the story |
| 250 | * @param pg |
| 251 | * the optional progress reporter |
| 252 | * |
| 253 | * @return the corresponding {@link Story} or NULL if not found |
| 254 | */ |
| 255 | public synchronized Story getStory(String luid, Progress pg) { |
| 256 | // TODO: pg |
| 257 | if (pg == null) { |
| 258 | pg = new Progress(); |
| 259 | } |
| 260 | |
| 261 | Story story = null; |
| 262 | for (MetaData meta : getMetas(null)) { |
| 263 | if (meta.getLuid().equals(luid)) { |
| 264 | File file = getFile(luid); |
| 265 | try { |
| 266 | SupportType type = SupportType.valueOfAllOkUC(meta |
| 267 | .getType()); |
| 268 | URL url = file.toURI().toURL(); |
| 269 | if (type != null) { |
| 270 | story = BasicSupport.getSupport(type).process(url, pg); |
| 271 | } else { |
| 272 | throw new IOException("Unknown type: " + meta.getType()); |
| 273 | } |
| 274 | } catch (IOException e) { |
| 275 | // We should not have not-supported files in the |
| 276 | // library |
| 277 | Instance.syserr(new IOException( |
| 278 | "Cannot load file from library: " + file, e)); |
| 279 | } finally { |
| 280 | pg.done(); |
| 281 | } |
| 282 | |
| 283 | break; |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | return story; |
| 288 | } |
| 289 | |
| 290 | /** |
| 291 | * Import the {@link Story} at the given {@link URL} into the |
| 292 | * {@link BasicLibrary}. |
| 293 | * |
| 294 | * @param url |
| 295 | * the {@link URL} to import |
| 296 | * @param pg |
| 297 | * the optional progress reporter |
| 298 | * |
| 299 | * @return the imported {@link Story} |
| 300 | * |
| 301 | * @throws IOException |
| 302 | * in case of I/O error |
| 303 | */ |
| 304 | public Story imprt(URL url, Progress pg) throws IOException { |
| 305 | BasicSupport support = BasicSupport.getSupport(url); |
| 306 | if (support == null) { |
| 307 | throw new IOException("URL not supported: " + url.toString()); |
| 308 | } |
| 309 | |
| 310 | return save(support.process(url, pg), null); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Export the {@link Story} to the given target in the given format. |
| 315 | * |
| 316 | * @param luid |
| 317 | * the {@link Story} ID |
| 318 | * @param type |
| 319 | * the {@link OutputType} to transform it to |
| 320 | * @param target |
| 321 | * the target to save to |
| 322 | * @param pg |
| 323 | * the optional progress reporter |
| 324 | * |
| 325 | * @return the saved resource (the main saved {@link File}) |
| 326 | * |
| 327 | * @throws IOException |
| 328 | * in case of I/O error |
| 329 | */ |
| 330 | public File export(String luid, OutputType type, String target, Progress pg) |
| 331 | throws IOException { |
| 332 | Progress pgGetStory = new Progress(); |
| 333 | Progress pgOut = new Progress(); |
| 334 | if (pg != null) { |
| 335 | pg.setMax(2); |
| 336 | pg.addProgress(pgGetStory, 1); |
| 337 | pg.addProgress(pgOut, 1); |
| 338 | } |
| 339 | |
| 340 | BasicOutput out = BasicOutput.getOutput(type, true); |
| 341 | if (out == null) { |
| 342 | throw new IOException("Output type not supported: " + type); |
| 343 | } |
| 344 | |
| 345 | Story story = getStory(luid, pgGetStory); |
| 346 | if (story == null) { |
| 347 | throw new IOException("Cannot find story to export: " + luid); |
| 348 | } |
| 349 | |
| 350 | return out.process(story, target, pgOut); |
| 351 | } |
| 352 | |
| 353 | /** |
| 354 | * Save a {@link Story} to the {@link BasicLibrary}. |
| 355 | * |
| 356 | * @param story |
| 357 | * the {@link Story} to save |
| 358 | * @param pg |
| 359 | * the optional progress reporter |
| 360 | * |
| 361 | * @return the same {@link Story}, whose LUID may have changed |
| 362 | * |
| 363 | * @throws IOException |
| 364 | * in case of I/O error |
| 365 | */ |
| 366 | public Story save(Story story, Progress pg) throws IOException { |
| 367 | return save(story, null, pg); |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * Save a {@link Story} to the {@link BasicLibrary} -- the LUID <b>must</b> |
| 372 | * be correct, or NULL to get the next free one. |
| 373 | * <p> |
| 374 | * Will override any previous {@link Story} with the same LUID. |
| 375 | * |
| 376 | * @param story |
| 377 | * the {@link Story} to save |
| 378 | * @param luid |
| 379 | * the <b>correct</b> LUID or NULL to get the next free one |
| 380 | * @param pg |
| 381 | * the optional progress reporter |
| 382 | * |
| 383 | * @return the same {@link Story}, whose LUID may have changed |
| 384 | * |
| 385 | * @throws IOException |
| 386 | * in case of I/O error |
| 387 | */ |
| 388 | public synchronized Story save(Story story, String luid, Progress pg) |
| 389 | throws IOException { |
| 390 | // Do not change the original metadata, but change the original story |
| 391 | MetaData meta = story.getMeta().clone(); |
| 392 | story.setMeta(meta); |
| 393 | |
| 394 | if (luid == null || luid.isEmpty()) { |
| 395 | meta.setLuid(String.format("%03d", getNextId())); |
| 396 | } else { |
| 397 | meta.setLuid(luid); |
| 398 | } |
| 399 | |
| 400 | if (getInfo(luid) != null) { |
| 401 | delete(luid); |
| 402 | } |
| 403 | doSave(story, pg); |
| 404 | |
| 405 | clearCache(); |
| 406 | |
| 407 | return story; |
| 408 | } |
| 409 | |
| 410 | /** |
| 411 | * Delete the given {@link Story} from this {@link BasicLibrary}. |
| 412 | * |
| 413 | * @param luid |
| 414 | * the LUID of the target {@link Story} |
| 415 | * |
| 416 | * @throws IOException |
| 417 | * in case of I/O error |
| 418 | */ |
| 419 | public synchronized void delete(String luid) throws IOException { |
| 420 | doDelete(luid); |
| 421 | clearCache(); |
| 422 | } |
| 423 | |
| 424 | /** |
| 425 | * Change the type (source) of the given {@link Story}. |
| 426 | * |
| 427 | * @param luid |
| 428 | * the {@link Story} LUID |
| 429 | * @param newSource |
| 430 | * the new source |
| 431 | * @param pg |
| 432 | * the optional progress reporter |
| 433 | * |
| 434 | * @throws IOException |
| 435 | * in case of I/O error or if the {@link Story} was not found |
| 436 | */ |
| 437 | public synchronized void changeSource(String luid, String newSource, |
| 438 | Progress pg) throws IOException { |
| 439 | MetaData meta = getInfo(luid); |
| 440 | if (meta == null) { |
| 441 | throw new IOException("Story not found: " + luid); |
| 442 | } |
| 443 | |
| 444 | meta.setSource(newSource); |
| 445 | saveMeta(meta, pg); |
| 446 | } |
| 447 | |
| 448 | /** |
| 449 | * Save back the current state of the {@link MetaData} (LUID <b>MUST NOT</b> |
| 450 | * change) for this {@link Story}. |
| 451 | * <p> |
| 452 | * By default, delete the old {@link Story} then recreate a new |
| 453 | * {@link Story}. |
| 454 | * <p> |
| 455 | * Note that this behaviour can lead to data loss. |
| 456 | * |
| 457 | * @param meta |
| 458 | * the new {@link MetaData} (LUID <b>MUST NOT</b> change) |
| 459 | * @param pg |
| 460 | * the optional {@link Progress} |
| 461 | * |
| 462 | * @throws IOException |
| 463 | * in case of I/O error or if the {@link Story} was not found |
| 464 | */ |
| 465 | protected synchronized void saveMeta(MetaData meta, Progress pg) |
| 466 | throws IOException { |
| 467 | if (pg == null) { |
| 468 | pg = new Progress(); |
| 469 | } |
| 470 | |
| 471 | Progress pgGet = new Progress(); |
| 472 | Progress pgSet = new Progress(); |
| 473 | pg.addProgress(pgGet, 50); |
| 474 | pg.addProgress(pgSet, 50); |
| 475 | |
| 476 | Story story = getStory(meta.getLuid(), pgGet); |
| 477 | if (story == null) { |
| 478 | throw new IOException("Story not found: " + meta.getLuid()); |
| 479 | } |
| 480 | |
| 481 | delete(meta.getLuid()); |
| 482 | |
| 483 | story.setMeta(meta); |
| 484 | save(story, meta.getLuid(), pgSet); |
| 485 | |
| 486 | pg.done(); |
| 487 | } |
| 488 | } |