Merge commit '738dd8c426dcc6ed2508d68b7985f68d66549889'
[fanfix.git] / src / be / nikiroo / fanfix / library / BasicLibrary.java
CommitLineData
e42573a0 1package be.nikiroo.fanfix.library;
68e2c6d2 2
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3import java.io.File;
4import java.io.IOException;
5import java.net.URL;
fd1d31c2 6import java.net.UnknownHostException;
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7import java.util.ArrayList;
8import java.util.Collections;
9import java.util.List;
c1b93db3 10import java.util.Map;
c1b93db3 11import java.util.TreeMap;
68e2c6d2 12
e42573a0 13import be.nikiroo.fanfix.Instance;
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14import be.nikiroo.fanfix.data.MetaData;
15import be.nikiroo.fanfix.data.Story;
16import be.nikiroo.fanfix.output.BasicOutput;
17import be.nikiroo.fanfix.output.BasicOutput.OutputType;
18import be.nikiroo.fanfix.supported.BasicSupport;
0ffa4754 19import be.nikiroo.fanfix.supported.SupportType;
16a81ef7 20import be.nikiroo.utils.Image;
68e2c6d2 21import be.nikiroo.utils.Progress;
5f42f329 22import be.nikiroo.utils.StringUtils;
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23
24/**
25 * Manage a library of Stories: import, export, list, modify.
26 * <p>
27 * Each {@link Story} object will be associated with a (local to the library)
28 * unique ID, the LUID, which will be used to identify the {@link Story}.
29 * <p>
30 * Most of the {@link BasicLibrary} functions work on a partial (cover
31 * <b>MAY</b> not be included) {@link MetaData} object.
32 *
33 * @author niki
34 */
35abstract public class BasicLibrary {
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36 /**
37 * A {@link BasicLibrary} status.
38 *
39 * @author niki
40 */
41 public enum Status {
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42 /** The library is ready and r/w. */
43 READ_WRITE,
44 /** The library is ready, but read-only. */
45 READ_ONLY,
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46 /** The library is invalid (not correctly set up). */
47 INVALID,
48 /** You are not allowed to access this library. */
99206a39 49 UNAUTHORIZED,
e6249b0f 50 /** The library is currently out of commission. */
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51 UNAVAILABLE;
52
53 /**
54 * The library is available (you can query it).
55 * <p>
56 * It does <b>not</b> specify if it is read-only or not.
57 *
58 * @return TRUE if it is
59 */
60 public boolean isReady() {
61 return (this == READ_WRITE || this == READ_ONLY);
62 }
63
64 /**
65 * This library can be modified (= you are allowed to modify it).
66 *
67 * @return TRUE if it is
68 */
69 public boolean isWritable() {
70 return (this == READ_WRITE);
71 }
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72 }
73
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74 /**
75 * Return a name for this library (the UI may display this).
76 * <p>
77 * Must not be NULL.
78 *
79 * @return the name, or an empty {@link String} if none
80 */
81 public String getLibraryName() {
82 return "";
83 }
84
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85 /**
86 * The library status.
87 *
88 * @return the current status
89 */
90 public Status getStatus() {
0bb51c9c 91 return Status.READ_WRITE;
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92 }
93
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94 /**
95 * Retrieve the main {@link File} corresponding to the given {@link Story},
96 * which can be passed to an external reader or instance.
97 * <p>
98 * Do <b>NOT</b> alter this file.
99 *
100 * @param luid
101 * the Library UID of the story
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102 * @param pg
103 * the optional {@link Progress}
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104 *
105 * @return the corresponding {@link Story}
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106 *
107 * @throws IOException
108 * in case of IOException
68e2c6d2 109 */
0bb51c9c 110 public abstract File getFile(String luid, Progress pg) throws IOException;
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111
112 /**
113 * Return the cover image associated to this story.
114 *
115 * @param luid
116 * the Library UID of the story
117 *
118 * @return the cover image
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119 *
120 * @throws IOException
121 * in case of IOException
68e2c6d2 122 */
0bb51c9c 123 public abstract Image getCover(String luid) throws IOException;
68e2c6d2 124
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125 /**
126 * Return the cover image associated to this source.
127 * <p>
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128 * By default, return the custom cover if any, and if not, return the cover
129 * of the first story with this source.
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130 *
131 * @param source
132 * the source
133 *
134 * @return the cover image or NULL
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135 *
136 * @throws IOException
137 * in case of IOException
14b57448 138 */
0bb51c9c 139 public Image getSourceCover(String source) throws IOException {
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140 Image custom = getCustomSourceCover(source);
141 if (custom != null) {
142 return custom;
143 }
144
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145 List<MetaData> metas = getListBySource(source);
146 if (metas.size() > 0) {
147 return getCover(metas.get(0).getLuid());
148 }
149
150 return null;
151 }
152
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153 /**
154 * Return the cover image associated to this author.
155 * <p>
156 * By default, return the custom cover if any, and if not, return the cover
157 * of the first story with this author.
158 *
159 * @param author
160 * the author
161 *
162 * @return the cover image or NULL
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163 *
164 * @throws IOException
165 * in case of IOException
3989dfc5 166 */
0bb51c9c 167 public Image getAuthorCover(String author) throws IOException {
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168 Image custom = getCustomAuthorCover(author);
169 if (custom != null) {
170 return custom;
171 }
172
173 List<MetaData> metas = getListByAuthor(author);
174 if (metas.size() > 0) {
175 return getCover(metas.get(0).getLuid());
176 }
177
178 return null;
179 }
180
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181 /**
182 * Return the custom cover image associated to this source.
183 * <p>
184 * By default, return NULL.
185 *
186 * @param source
187 * the source to look for
188 *
189 * @return the custom cover or NULL if none
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190 *
191 * @throws IOException
192 * in case of IOException
e1de8087 193 */
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194 @SuppressWarnings("unused")
195 public Image getCustomSourceCover(String source) throws IOException {
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196 return null;
197 }
198
14b57448 199 /**
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200 * Return the custom cover image associated to this author.
201 * <p>
202 * By default, return NULL.
203 *
204 * @param author
205 * the author to look for
206 *
207 * @return the custom cover or NULL if none
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208 *
209 * @throws IOException
210 * in case of IOException
3989dfc5 211 */
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212 @SuppressWarnings("unused")
213 public Image getCustomAuthorCover(String author) throws IOException {
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214 return null;
215 }
216
217 /**
218 * Set the source cover to the given story cover.
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219 *
220 * @param source
221 * the source to change
222 * @param luid
223 * the story LUID
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224 *
225 * @throws IOException
226 * in case of IOException
14b57448 227 */
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228 public abstract void setSourceCover(String source, String luid)
229 throws IOException;
14b57448 230
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231 /**
232 * Set the author cover to the given story cover.
233 *
d4449e96 234 * @param author
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235 * the author to change
236 * @param luid
237 * the story LUID
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238 *
239 * @throws IOException
240 * in case of IOException
3989dfc5 241 */
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242 public abstract void setAuthorCover(String author, String luid)
243 throws IOException;
3989dfc5 244
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245 /**
246 * Return the list of stories (represented by their {@link MetaData}, which
247 * <b>MAY</b> not have the cover included).
248 *
249 * @param pg
250 * the optional {@link Progress}
251 *
252 * @return the list (can be empty but not NULL)
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253 *
254 * @throws IOException
255 * in case of IOException
68e2c6d2 256 */
0bb51c9c 257 protected abstract List<MetaData> getMetas(Progress pg) throws IOException;
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258
259 /**
260 * Invalidate the {@link Story} cache (when the content should be re-read
261 * because it was changed).
262 */
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263 protected void invalidateInfo() {
264 invalidateInfo(null);
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265 }
266
267 /**
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268 * Invalidate the {@link Story} cache (when the content is removed).
269 * <p>
270 * All the cache can be deleted if NULL is passed as meta.
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271 *
272 * @param luid
efa3c511 273 * the LUID of the {@link Story} to clear from the cache, or NULL
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274 * for all stories
275 */
c8d48938 276 protected abstract void invalidateInfo(String luid);
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277
278 /**
279 * Invalidate the {@link Story} cache (when the content has changed, but we
280 * already have it) with the new given meta.
281 *
282 * @param meta
283 * the {@link Story} to clear from the cache
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284 *
285 * @throws IOException
286 * in case of IOException
efa3c511 287 */
0bb51c9c 288 protected abstract void updateInfo(MetaData meta) throws IOException;
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289
290 /**
291 * Return the next LUID that can be used.
292 *
293 * @return the next luid
294 */
295 protected abstract int getNextId();
296
297 /**
298 * Delete the target {@link Story}.
299 *
300 * @param luid
301 * the LUID of the {@link Story}
302 *
303 * @throws IOException
304 * in case of I/O error or if the {@link Story} wa not found
305 */
306 protected abstract void doDelete(String luid) throws IOException;
307
308 /**
309 * Actually save the story to the back-end.
310 *
311 * @param story
312 * the {@link Story} to save
313 * @param pg
314 * the optional {@link Progress}
315 *
316 * @return the saved {@link Story} (which may have changed, especially
317 * regarding the {@link MetaData})
318 *
319 * @throws IOException
320 * in case of I/O error
321 */
322 protected abstract Story doSave(Story story, Progress pg)
323 throws IOException;
324
325 /**
e6249b0f 326 * Refresh the {@link BasicLibrary}, that is, make sure all metas are
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327 * loaded.
328 *
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329 * @param pg
330 * the optional progress reporter
331 */
e6249b0f 332 public void refresh(Progress pg) {
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333 try {
334 getMetas(pg);
335 } catch (IOException e) {
336 // We will let it fail later
337 }
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338 }
339
340 /**
341 * List all the known types (sources) of stories.
342 *
343 * @return the sources
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344 *
345 * @throws IOException
346 * in case of IOException
68e2c6d2 347 */
0bb51c9c 348 public synchronized List<String> getSources() throws IOException {
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349 List<String> list = new ArrayList<String>();
350 for (MetaData meta : getMetas(null)) {
351 String storySource = meta.getSource();
352 if (!list.contains(storySource)) {
353 list.add(storySource);
354 }
355 }
356
357 Collections.sort(list);
358 return list;
359 }
360
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361 /**
362 * List all the known types (sources) of stories, grouped by directory
363 * ("Source_1/a" and "Source_1/b" will be grouped into "Source_1").
364 * <p>
365 * Note that an empty item in the list means a non-grouped source (type) --
366 * e.g., you could have for Source_1:
367 * <ul>
368 * <li><tt></tt>: empty, so source is "Source_1"</li>
369 * <li><tt>a</tt>: empty, so source is "Source_1/a"</li>
370 * <li><tt>b</tt>: empty, so source is "Source_1/b"</li>
371 * </ul>
372 *
373 * @return the grouped list
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374 *
375 * @throws IOException
376 * in case of IOException
c1b93db3 377 */
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378 public synchronized Map<String, List<String>> getSourcesGrouped()
379 throws IOException {
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380 Map<String, List<String>> map = new TreeMap<String, List<String>>();
381 for (String source : getSources()) {
382 String name;
383 String subname;
384
385 int pos = source.indexOf('/');
386 if (pos > 0 && pos < source.length() - 1) {
387 name = source.substring(0, pos);
388 subname = source.substring(pos + 1);
389
390 } else {
391 name = source;
392 subname = "";
393 }
394
395 List<String> list = map.get(name);
396 if (list == null) {
397 list = new ArrayList<String>();
398 map.put(name, list);
399 }
400 list.add(subname);
401 }
402
403 return map;
404 }
405
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406 /**
407 * List all the known authors of stories.
408 *
409 * @return the authors
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410 *
411 * @throws IOException
412 * in case of IOException
68e2c6d2 413 */
0bb51c9c 414 public synchronized List<String> getAuthors() throws IOException {
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415 List<String> list = new ArrayList<String>();
416 for (MetaData meta : getMetas(null)) {
417 String storyAuthor = meta.getAuthor();
418 if (!list.contains(storyAuthor)) {
419 list.add(storyAuthor);
420 }
421 }
422
423 Collections.sort(list);
424 return list;
425 }
426
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427 /**
428 * Return the list of authors, grouped by starting letter(s) if needed.
429 * <p>
430 * If the number of author is not too high, only one group with an empty
431 * name and all the authors will be returned.
432 * <p>
433 * If not, the authors will be separated into groups:
434 * <ul>
435 * <li><tt>*</tt>: any author whose name doesn't contain letters nor numbers
436 * </li>
437 * <li><tt>0-9</tt>: any authors whose name starts with a number</li>
438 * <li><tt>A-C</tt> (for instance): any author whose name starts with
439 * <tt>A</tt>, <tt>B</tt> or <tt>C</tt></li>
440 * </ul>
441 * Note that the letters used in the groups can vary (except <tt>*</tt> and
442 * <tt>0-9</tt>, which may only be present or not).
443 *
444 * @return the authors' names, grouped by letter(s)
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445 *
446 * @throws IOException
447 * in case of IOException
5f42f329 448 */
0bb51c9c 449 public Map<String, List<String>> getAuthorsGrouped() throws IOException {
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450 int MAX = 20;
451
97b36d32 452 Map<String, List<String>> groups = new TreeMap<String, List<String>>();
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453 List<String> authors = getAuthors();
454
97b36d32 455 // If all authors fit the max, just report them as is
5f42f329 456 if (authors.size() <= MAX) {
97b36d32 457 groups.put("", authors);
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458 return groups;
459 }
460
97b36d32 461 // Create groups A to Z, which can be empty here
5f42f329 462 for (char car = 'A'; car <= 'Z'; car++) {
97b36d32 463 groups.put(Character.toString(car), getAuthorsGroup(authors, car));
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464 }
465
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466 // Collapse them
467 List<String> keys = new ArrayList<String>(groups.keySet());
468 for (int i = 0; i + 1 < keys.size(); i++) {
469 String keyNow = keys.get(i);
470 String keyNext = keys.get(i + 1);
471
472 List<String> now = groups.get(keyNow);
473 List<String> next = groups.get(keyNext);
474
475 int currentTotal = now.size() + next.size();
5f42f329 476 if (currentTotal <= MAX) {
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477 String key = keyNow.charAt(0) + "-"
478 + keyNext.charAt(keyNext.length() - 1);
479
5f42f329 480 List<String> all = new ArrayList<String>();
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481 all.addAll(now);
482 all.addAll(next);
483
484 groups.remove(keyNow);
485 groups.remove(keyNext);
486 groups.put(key, all);
487
488 keys.set(i, key); // set the new key instead of key(i)
489 keys.remove(i + 1); // remove the next, consumed key
490 i--; // restart at key(i)
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491 }
492 }
493
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494 // Add "special" groups
495 groups.put("*", getAuthorsGroup(authors, '*'));
496 groups.put("0-9", getAuthorsGroup(authors, '0'));
497
498 // Prune empty groups
499 keys = new ArrayList<String>(groups.keySet());
500 for (String key : keys) {
501 if (groups.get(key).isEmpty()) {
502 groups.remove(key);
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503 }
504 }
505
506 return groups;
507 }
508
509 /**
510 * Get all the authors that start with the given character:
511 * <ul>
512 * <li><tt>*</tt>: any author whose name doesn't contain letters nor numbers
513 * </li>
514 * <li><tt>0</tt>: any authors whose name starts with a number</li>
515 * <li><tt>A</tt> (any capital latin letter): any author whose name starts
516 * with <tt>A</tt></li>
517 * </ul>
518 *
519 * @param authors
520 * the full list of authors
521 * @param car
522 * the starting character, <tt>*</tt>, <tt>0</tt> or a capital
523 * letter
0bb51c9c 524 *
0c7a6637 525 * @return the authors that fulfil the starting letter
5f42f329 526 */
0c7a6637 527 private List<String> getAuthorsGroup(List<String> authors, char car) {
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528 List<String> accepted = new ArrayList<String>();
529 for (String author : authors) {
530 char first = '*';
531 for (int i = 0; first == '*' && i < author.length(); i++) {
532 String san = StringUtils.sanitize(author, true, true);
533 char c = san.charAt(i);
534 if (c >= '0' && c <= '9') {
535 first = '0';
536 } else if (c >= 'a' && c <= 'z') {
537 first = (char) (c - 'a' + 'A');
538 } else if (c >= 'A' && c <= 'Z') {
539 first = c;
540 }
541 }
542
543 if (first == car) {
544 accepted.add(author);
545 }
546 }
547
548 return accepted;
549 }
550
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551 /**
552 * List all the stories in the {@link BasicLibrary}.
553 * <p>
3a0605e6 554 * Cover images <b>MAYBE</b> not included.
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555 *
556 * @return the stories
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557 *
558 * @throws IOException
559 * in case of IOException
68e2c6d2 560 */
0bb51c9c 561 public synchronized List<MetaData> getList() throws IOException {
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562 return getMetas(null);
563 }
564
565 /**
566 * List all the stories of the given source type in the {@link BasicLibrary}
567 * , or all the stories if NULL is passed as a type.
568 * <p>
569 * Cover images not included.
570 *
571 * @param type
572 * the type of story to retrieve, or NULL for all
573 *
574 * @return the stories
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575 *
576 * @throws IOException
577 * in case of IOException
68e2c6d2 578 */
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579 public synchronized List<MetaData> getListBySource(String type)
580 throws IOException {
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581 List<MetaData> list = new ArrayList<MetaData>();
582 for (MetaData meta : getMetas(null)) {
583 String storyType = meta.getSource();
584 if (type == null || type.equalsIgnoreCase(storyType)) {
585 list.add(meta);
586 }
587 }
588
589 Collections.sort(list);
590 return list;
591 }
592
593 /**
594 * List all the stories of the given author in the {@link BasicLibrary}, or
595 * all the stories if NULL is passed as an author.
596 * <p>
597 * Cover images not included.
598 *
599 * @param author
600 * the author of the stories to retrieve, or NULL for all
601 *
602 * @return the stories
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603 *
604 * @throws IOException
605 * in case of IOException
68e2c6d2 606 */
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607 public synchronized List<MetaData> getListByAuthor(String author)
608 throws IOException {
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609 List<MetaData> list = new ArrayList<MetaData>();
610 for (MetaData meta : getMetas(null)) {
611 String storyAuthor = meta.getAuthor();
612 if (author == null || author.equalsIgnoreCase(storyAuthor)) {
613 list.add(meta);
614 }
615 }
616
617 Collections.sort(list);
618 return list;
619 }
620
621 /**
622 * Retrieve a {@link MetaData} corresponding to the given {@link Story},
623 * cover image <b>MAY</b> not be included.
624 *
625 * @param luid
626 * the Library UID of the story
627 *
628 * @return the corresponding {@link Story}
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629 *
630 * @throws IOException
631 * in case of IOException
68e2c6d2 632 */
0bb51c9c 633 public synchronized MetaData getInfo(String luid) throws IOException {
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634 if (luid != null) {
635 for (MetaData meta : getMetas(null)) {
636 if (luid.equals(meta.getLuid())) {
637 return meta;
638 }
639 }
640 }
641
642 return null;
643 }
644
645 /**
646 * Retrieve a specific {@link Story}.
647 *
648 * @param luid
649 * the Library UID of the story
650 * @param pg
651 * the optional progress reporter
652 *
653 * @return the corresponding {@link Story} or NULL if not found
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654 *
655 * @throws IOException
656 * in case of IOException
68e2c6d2 657 */
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658 public synchronized Story getStory(String luid, Progress pg)
659 throws IOException {
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660 Progress pgMetas = new Progress();
661 Progress pgStory = new Progress();
662 if (pg != null) {
663 pg.setMinMax(0, 100);
664 pg.addProgress(pgMetas, 10);
665 pg.addProgress(pgStory, 90);
666 }
667
668 MetaData meta = null;
669 for (MetaData oneMeta : getMetas(pgMetas)) {
670 if (oneMeta.getLuid().equals(luid)) {
671 meta = oneMeta;
672 break;
673 }
674 }
675
676 pgMetas.done();
677
678 Story story = getStory(luid, meta, pgStory);
679 pgStory.done();
680
681 return story;
682 }
683
684 /**
685 * Retrieve a specific {@link Story}.
686 *
687 * @param luid
688 * the meta of the story
689 * @param pg
690 * the optional progress reporter
691 *
692 * @return the corresponding {@link Story} or NULL if not found
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693 *
694 * @throws IOException
695 * in case of IOException
60f72311 696 */
d4449e96 697 public synchronized Story getStory(String luid,
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698 @SuppressWarnings("javadoc") MetaData meta, Progress pg)
699 throws IOException {
60f72311 700
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701 if (pg == null) {
702 pg = new Progress();
703 }
704
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705 Progress pgGet = new Progress();
706 Progress pgProcess = new Progress();
707
708 pg.setMinMax(0, 2);
709 pg.addProgress(pgGet, 1);
710 pg.addProgress(pgProcess, 1);
711
68e2c6d2 712 Story story = null;
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713 File file = getFile(luid, pgGet);
714 pgGet.done();
715 try {
716 SupportType type = SupportType.valueOfAllOkUC(meta.getType());
717 URL url = file.toURI().toURL();
718 if (type != null) {
719 story = BasicSupport.getSupport(type, url) //
720 .process(pgProcess);
721
722 // Because we do not want to clear the meta cache:
723 meta.setCover(story.getMeta().getCover());
724 meta.setResume(story.getMeta().getResume());
725 story.setMeta(meta);
726 //
727 } else {
728 throw new IOException("Unknown type: " + meta.getType());
68e2c6d2 729 }
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730 } catch (IOException e) {
731 // We should not have not-supported files in the
732 // library
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733 Instance.getTraceHandler().error(
734 new IOException(String.format(
735 "Cannot load file of type '%s' from library: %s",
736 meta.getType(), file), e));
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737 } finally {
738 pgProcess.done();
739 pg.done();
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740 }
741
742 return story;
743 }
744
745 /**
746 * Import the {@link Story} at the given {@link URL} into the
747 * {@link BasicLibrary}.
748 *
749 * @param url
750 * the {@link URL} to import
751 * @param pg
752 * the optional progress reporter
753 *
b6b65795 754 * @return the imported Story {@link MetaData}
68e2c6d2 755 *
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756 * @throws UnknownHostException
757 * if the host is not supported
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758 * @throws IOException
759 * in case of I/O error
760 */
b6b65795 761 public MetaData imprt(URL url, Progress pg) throws IOException {
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762 if (pg == null)
763 pg = new Progress();
764
765 pg.setMinMax(0, 1000);
766 Progress pgProcess = new Progress();
767 Progress pgSave = new Progress();
768 pg.addProgress(pgProcess, 800);
769 pg.addProgress(pgSave, 200);
770
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771 BasicSupport support = BasicSupport.getSupport(url);
772 if (support == null) {
fd1d31c2 773 throw new UnknownHostException("" + url);
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774 }
775
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776 Story story = save(support.process(pgProcess), pgSave);
777 pg.done();
778
b6b65795 779 return story.getMeta();
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780 }
781
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782 /**
783 * Import the story from one library to another, and keep the same LUID.
784 *
785 * @param other
786 * the other library to import from
787 * @param luid
788 * the Library UID
789 * @param pg
790 * the optional progress reporter
791 *
792 * @throws IOException
793 * in case of I/O error
794 */
795 public void imprt(BasicLibrary other, String luid, Progress pg)
796 throws IOException {
797 Progress pgGetStory = new Progress();
798 Progress pgSave = new Progress();
799 if (pg == null) {
800 pg = new Progress();
801 }
802
803 pg.setMinMax(0, 2);
804 pg.addProgress(pgGetStory, 1);
805 pg.addProgress(pgSave, 1);
806
807 Story story = other.getStory(luid, pgGetStory);
808 if (story != null) {
809 story = this.save(story, luid, pgSave);
810 pg.done();
811 } else {
812 pg.done();
813 throw new IOException("Cannot find story in Library: " + luid);
814 }
815 }
816
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817 /**
818 * Export the {@link Story} to the given target in the given format.
819 *
820 * @param luid
821 * the {@link Story} ID
822 * @param type
823 * the {@link OutputType} to transform it to
824 * @param target
825 * the target to save to
826 * @param pg
827 * the optional progress reporter
828 *
829 * @return the saved resource (the main saved {@link File})
830 *
831 * @throws IOException
832 * in case of I/O error
833 */
834 public File export(String luid, OutputType type, String target, Progress pg)
835 throws IOException {
836 Progress pgGetStory = new Progress();
837 Progress pgOut = new Progress();
838 if (pg != null) {
839 pg.setMax(2);
840 pg.addProgress(pgGetStory, 1);
841 pg.addProgress(pgOut, 1);
842 }
843
925298fd 844 BasicOutput out = BasicOutput.getOutput(type, false, false);
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845 if (out == null) {
846 throw new IOException("Output type not supported: " + type);
847 }
848
849 Story story = getStory(luid, pgGetStory);
850 if (story == null) {
851 throw new IOException("Cannot find story to export: " + luid);
852 }
853
854 return out.process(story, target, pgOut);
855 }
856
857 /**
858 * Save a {@link Story} to the {@link BasicLibrary}.
859 *
860 * @param story
861 * the {@link Story} to save
862 * @param pg
863 * the optional progress reporter
864 *
865 * @return the same {@link Story}, whose LUID may have changed
866 *
867 * @throws IOException
868 * in case of I/O error
869 */
870 public Story save(Story story, Progress pg) throws IOException {
871 return save(story, null, pg);
872 }
873
874 /**
875 * Save a {@link Story} to the {@link BasicLibrary} -- the LUID <b>must</b>
876 * be correct, or NULL to get the next free one.
877 * <p>
878 * Will override any previous {@link Story} with the same LUID.
879 *
880 * @param story
881 * the {@link Story} to save
882 * @param luid
883 * the <b>correct</b> LUID or NULL to get the next free one
884 * @param pg
885 * the optional progress reporter
886 *
887 * @return the same {@link Story}, whose LUID may have changed
888 *
889 * @throws IOException
890 * in case of I/O error
891 */
892 public synchronized Story save(Story story, String luid, Progress pg)
893 throws IOException {
0bf8264e 894
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895 Instance.getTraceHandler().trace(
896 this.getClass().getSimpleName() + ": saving story " + luid);
897
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898 // Do not change the original metadata, but change the original story
899 MetaData meta = story.getMeta().clone();
900 story.setMeta(meta);
901
902 if (luid == null || luid.isEmpty()) {
903 meta.setLuid(String.format("%03d", getNextId()));
904 } else {
905 meta.setLuid(luid);
906 }
907
e272f05f 908 if (luid != null && getInfo(luid) != null) {
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909 delete(luid);
910 }
14b57448 911
efa3c511 912 story = doSave(story, pg);
0bf8264e 913
efa3c511 914 updateInfo(story.getMeta());
68e2c6d2 915
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916 Instance.getTraceHandler().trace(
917 this.getClass().getSimpleName() + ": story saved (" + luid
918 + ")");
919
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920 return story;
921 }
922
923 /**
924 * Delete the given {@link Story} from this {@link BasicLibrary}.
925 *
926 * @param luid
927 * the LUID of the target {@link Story}
928 *
929 * @throws IOException
930 * in case of I/O error
931 */
932 public synchronized void delete(String luid) throws IOException {
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933 Instance.getTraceHandler().trace(
934 this.getClass().getSimpleName() + ": deleting story " + luid);
935
68e2c6d2 936 doDelete(luid);
c8d48938 937 invalidateInfo(luid);
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938
939 Instance.getTraceHandler().trace(
940 this.getClass().getSimpleName() + ": story deleted (" + luid
941 + ")");
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942 }
943
944 /**
945 * Change the type (source) of the given {@link Story}.
946 *
947 * @param luid
948 * the {@link Story} LUID
949 * @param newSource
950 * the new source
951 * @param pg
952 * the optional progress reporter
953 *
954 * @throws IOException
955 * in case of I/O error or if the {@link Story} was not found
956 */
957 public synchronized void changeSource(String luid, String newSource,
958 Progress pg) throws IOException {
959 MetaData meta = getInfo(luid);
960 if (meta == null) {
961 throw new IOException("Story not found: " + luid);
962 }
963
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964 changeSTA(luid, newSource, meta.getTitle(), meta.getAuthor(), pg);
965 }
966
967 /**
968 * Change the title (name) of the given {@link Story}.
969 *
970 * @param luid
971 * the {@link Story} LUID
972 * @param newTitle
973 * the new title
974 * @param pg
975 * the optional progress reporter
976 *
977 * @throws IOException
978 * in case of I/O error or if the {@link Story} was not found
979 */
980 public synchronized void changeTitle(String luid, String newTitle,
981 Progress pg) throws IOException {
982 MetaData meta = getInfo(luid);
983 if (meta == null) {
984 throw new IOException("Story not found: " + luid);
985 }
986
987 changeSTA(luid, meta.getSource(), newTitle, meta.getAuthor(), pg);
988 }
989
990 /**
991 * Change the author of the given {@link Story}.
992 *
993 * @param luid
994 * the {@link Story} LUID
995 * @param newAuthor
996 * the new author
997 * @param pg
998 * the optional progress reporter
999 *
1000 * @throws IOException
1001 * in case of I/O error or if the {@link Story} was not found
1002 */
1003 public synchronized void changeAuthor(String luid, String newAuthor,
1004 Progress pg) throws IOException {
1005 MetaData meta = getInfo(luid);
1006 if (meta == null) {
1007 throw new IOException("Story not found: " + luid);
1008 }
1009
1010 changeSTA(luid, meta.getSource(), meta.getTitle(), newAuthor, pg);
1011 }
1012
1013 /**
1014 * Change the Source, Title and Author of the {@link Story} in one single
1015 * go.
1016 *
1017 * @param luid
1018 * the {@link Story} LUID
1019 * @param newSource
1020 * the new source
1021 * @param newTitle
1022 * the new title
1023 * @param newAuthor
1024 * the new author
1025 * @param pg
1026 * the optional progress reporter
1027 *
1028 * @throws IOException
1029 * in case of I/O error or if the {@link Story} was not found
1030 */
1031 protected synchronized void changeSTA(String luid, String newSource,
1032 String newTitle, String newAuthor, Progress pg) throws IOException {
1033 MetaData meta = getInfo(luid);
1034 if (meta == null) {
1035 throw new IOException("Story not found: " + luid);
1036 }
1037
68e2c6d2 1038 meta.setSource(newSource);
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1039 meta.setTitle(newTitle);
1040 meta.setAuthor(newAuthor);
68e2c6d2 1041 saveMeta(meta, pg);
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1042
1043 invalidateInfo(luid);
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1044 }
1045
1046 /**
1047 * Save back the current state of the {@link MetaData} (LUID <b>MUST NOT</b>
1048 * change) for this {@link Story}.
1049 * <p>
1050 * By default, delete the old {@link Story} then recreate a new
1051 * {@link Story}.
1052 * <p>
c8d48938 1053 * Note that this behaviour can lead to data loss in case of problems!
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1054 *
1055 * @param meta
1056 * the new {@link MetaData} (LUID <b>MUST NOT</b> change)
1057 * @param pg
1058 * the optional {@link Progress}
1059 *
1060 * @throws IOException
1061 * in case of I/O error or if the {@link Story} was not found
1062 */
1063 protected synchronized void saveMeta(MetaData meta, Progress pg)
1064 throws IOException {
1065 if (pg == null) {
1066 pg = new Progress();
1067 }
1068
1069 Progress pgGet = new Progress();
1070 Progress pgSet = new Progress();
1071 pg.addProgress(pgGet, 50);
1072 pg.addProgress(pgSet, 50);
1073
1074 Story story = getStory(meta.getLuid(), pgGet);
1075 if (story == null) {
1076 throw new IOException("Story not found: " + meta.getLuid());
1077 }
1078
c8d48938 1079 // TODO: this is not safe!
68e2c6d2 1080 delete(meta.getLuid());
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1081 story.setMeta(meta);
1082 save(story, meta.getLuid(), pgSet);
1083
1084 pg.done();
1085 }
1086}