tracker

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1. // lib/sync.hl — THE TMDB SYNC OF ONE TITLE (tracker.worldapi.org#9; tmdbsync.hl before mission 028 — its requests are in tmdb.hl,
2. // its small helpers in sync-helpers.hl, the backfills in backfill.hl): for every show SOMEONE follows, fetch the show's
3. // details, seasons and episodes from TMDB and bring storage/mpackdb/ up to date, plus the show's poster.
4. // Used by BOTH runners: the daily run inside the app (jobs.hl `syncTick`, one show per step) and the
5. // command-line tool (tools/sync-tmdb.hl). Reference for the API use: the old tracker's
6. // crates/sync/commands/sync.js (read-only).
7. //
8. // GET <TMDB_BASE_URL>/tv/<tmdbId>?append_to_response=external_ids,aggregate_credits the details (status,
9. // counts, overview, poster_path, seasons[])
10. // + external_ids (imdb_id, tvdb_id) + the cast/crew
11. // of every season (tracker#28: the answer goes back
12. // as `res.details`, the caller stores the credits —
13. // credits.hl applyCredits; no extra request)
14. // GET <TMDB_BASE_URL>/tv/<tmdbId>?append_to_response=season/1,season/2… up to 20 seasons with their
15. // episodes in ONE request
16. // GET <TMDB_IMAGE_URL>/w342<poster_path> the poster → storage/mpackdb/posters/
17. // Authorization: Bearer $TMDB_READ_TOKEN
18. // GET <TVMAZE_BASE_URL>/lookup/shows?imdb=tt… (else ?thetvdb=<id>) the TVmaze id, ONLY when the show
19. // has none (301 → /shows/<id>, 404 = unknown)
20. // GET <TVMAZE_BASE_URL>/shows/<tvmzId>?embed=episodes a SERIES on TVmaze with its episodes (#15), see
21. // below; its summary → `tvmazeSummary` (tracker#18)
22. // A MOVIE (`type = 'movie'`, 7814 of the migrated rows, 1 followed): only
23. // GET <TMDB_BASE_URL>/movie/<tmdbId>?append_to_response=external_ids,credits its imdb id + poster (+ credits); no seasons,
24. // status, overview (it is no TV show)
25. //
26. // EXTERNAL IDS (tracker.worldapi.org#12, the show page's link icons): a MISSING imdbId/tvdbId is filled from TMDB's
27. // external_ids, a missing tvmzId from TVmaze's lookup — an id the show already has is NEVER overwritten.
28. // RULES (ticket): new seasons/episodes are ADDED, existing ones UPDATED (title, summary, release) —
29. // matched by tmdbId, never duplicated; NOTHING is deleted. An episode without a tmdbId (161 migrated ones)
30. // is matched by its S/E number instead and gets the tmdbId. A season (no tmdbId in the migrated data) is
31. // matched by (show, seasonNumber). A TMDB value that is empty/null never overwrites a stored one.
32. // Season 0 ("Specials") is only synced for a show that already has a season 0 (else every followed show
33. // would suddenly flood /my/unwatched with specials); a TMDB season with no episodes is not created.
34. //
35. // TVMAZE MERGE (tracker.worldapi.org#15): AFTER TMDB, a series with a tvmzId gets TVmaze's episode list (one request)
36. // and TVmaze FILLS GAPS only — matched by season/episode number: a missing episode (and its season) is ADDED, an empty
37. // title or air date of an existing one is FILLED; a value TMDB gave is never overwritten. A placeholder title
38. // ("Episode 4", "TBA") counts as empty — and TMDB's own placeholder never overwrites a real title either (else the
39. // two would flip it every day). When TMDB later lists the episode, the TMDB step adopts it by number (it has no tmdbId)
40. // and TMDB's values win. TVmaze specials (no episode number) are skipped, season 0 only if the show has one. SAFETY:
41. // when the two number a show differently (fewer than 80 % of the episodes both know air within a day of each other or
42. // share the title — `numberingAgrees`), TVmaze is ignored for that show (`tvmazeSkipped`). Summaries are not taken
43. // (TVmaze's are HTML; the ticket asks for episodes, air dates, titles). The SHOW's TVmaze summary is kept, HTML stripped, as
44. // `tvmazeSummary` (tracker#18; the page shows summary > tmdbSummary > tvmazeSummary, shows.hl summaryOf).
45. //
46. // WHICH TITLES, WHEN (tracker#18): the daily run asks TMDB's and TVmaze's change lists first and syncs only the titles of ours
47. // that changed — dailysync.hl. THE SHOW RECORD (title, tagline, homepage, status, genres …) is refreshed from the same details
48. // answer by details.hl `applySynced`.
49. //
50. // IDS ARE SELF-ASSIGNED (randomBytes, like watches.hl): hl:mpackdb's own generated @id can repeat within
51. // one millisecond, which is what made update() lose rows (hybriel#113, fixed upstream, not in the vendored
52. // build) — a table holding only unique ids is safe to update().
53. //
54. // ONE PROCESS PER STORAGE: hl:mpackdb does not coordinate two processes (hybriel#21) — the in-app run uses
55. // the app's own open tables (imported from shows.hl); the tool only ever runs against a stopped app or a copy.
56. import { now } from 'hl:time'
57. import { newId, textOr } from './util.hl'
58. import { showsTable, seasonsTable, episodesTable, kindOfTitle } from './shows.hl'
59. import { tmdbGet, numIdOr, externalIdsFor, tvmazeEpisodes, syncPoster, adultOf } from './tmdb.hl'
60. import { isPlaceholderTitle, numberingAgrees, wantedSeasonNumbers, batchesOf, changedText, isMigratedRow } from './sync-helpers.hl'
62. // Merge TVmaze's episodes of a series into what we have AFTER the TMDB step (gaps only, rules at the top).
63. // `seasonsByNumber` / `epByNumber` = the show's seasons by number and episodes by '<s>x<e>', as the TMDB step left them.
64. // Answers { tvmazeRequests, newSeasons, newEpisodes, filledEpisodes, skipped, errors, error, showSeasons }.
65. static mergeTvmaze = (title, &showKey, tvmzId, seasonsIn, episodesIn, &showSeasonsIn) => {
66. seasonsByNumber = seasonsIn
67. epByNumber = episodesIn
68. out = { tvmazeRequests = 1 newSeasons = 0 newEpisodes = 0 filledEpisodes = 0 skipped = 0 errors = 0 error = '' showSeasons = showSeasonsIn summary = null }
69. got = tvmazeEpisodes(tvmzId)
70. if (got.failed != null) { out.errors = 1 out.error = title + ': ' + got.failed return out }
71. out.summary = got.summary
72. // the numbered episodes TVmaze has in seasons we take (no specials; season 0 only when the show has one)
73. list = []
74. for (te of got.list) {
75. if (numIdOr(te.season) != null && numIdOr(te.number) != null) { list.push(te) }
76. else if (te.season == 0 && numIdOr(te.number) != null && seasonsByNumber['0'] != null) { list.push(te) }
77. }
78. if (!numberingAgrees(epByNumber, list).ok) { out.skipped = 1 return out }
80. added = {}
81. addedFirstDate = {}
82. for (te of list) {
83. let key = te.season + 'x' + te.number
84. let e = epByNumber[key]
85. if (e == null) {
86. let seasonKey = seasonsByNumber['' + te.season] != null ? seasonsByNumber['' + te.season].id : null
87. if (seasonKey == null) {
88. if (added['' + te.season] == null) { added['' + te.season] = [] addedFirstDate['' + te.season] = textOr(te.airdate) seasonsByNumber['' + te.season] = { id = newId() isNew = true } }
89. seasonKey = seasonsByNumber['' + te.season].id
90. }
91. let fresh = { id = newId() episodeNumber = te.number seasonNumber = te.season
92. title = textOr(te.name) summary = '' release = textOr(te.airdate)
93. show = showKey season = seasonKey tmdbId = null tvmzId = te.id oldId = 'tvmaze-episode:' + te.id }
94. if (episodesTable.put(fresh) == null) {
95. out.errors = out.errors + 1
96. out.error = title + ': TVmaze episode ' + te.id + ' not stored: ' + episodesTable.lastError()
97. } else {
98. if (added['' + te.season] == null) { added['' + te.season] = [] }
99. let l = added['' + te.season]
100. l.push(fresh.id)
101. added['' + te.season] = l
102. epByNumber[key] = fresh
103. out.newEpisodes = out.newEpisodes + 1
104. }
105. } else {
106. let changed = false
107. if (isPlaceholderTitle(e.title) && !isPlaceholderTitle(te.name)) { e.title = te.name changed = true }
108. if (textOr(e.release) == null && textOr(te.airdate) != null) { e.release = te.airdate changed = true }
109. if (changed) {
110. if (episodesTable.update(e.id, e) == null) {
111. out.errors = out.errors + 1
112. out.error = title + ': episode ' + e.id + ' not filled from TVmaze: ' + episodesTable.lastError()
113. } else {
114. epByNumber[key] = e
115. out.filledEpisodes = out.filledEpisodes + 1
116. }
117. }
118. }
119. }
120. // the seasons that got episodes: an existing one is updated, a new one stored and linked to the show
121. showSeasons = []
122. for (sid of showSeasonsIn) { showSeasons.push(sid) }
123. for (n of added.keys()) {
124. let ids = added[n]
125. let s = seasonsByNumber[n]
126. if (ids.length > 0 && s.isNew == true) {
127. let season = { id = s.id seasonNumber = toNumber(n) title = 'Season ' + n release = addedFirstDate[n] summary = ''
128. show = showKey episodes = ids oldId = 'tvmaze-season:' + tvmzId + ':' + n }
129. if (seasonsTable.put(season) == null) {
130. out.errors = out.errors + 1
131. out.error = title + ': TVmaze season ' + n + ' not stored: ' + seasonsTable.lastError()
132. } else {
133. showSeasons.push(season.id)
134. out.newSeasons = out.newSeasons + 1
135. }
136. } else if (ids.length > 0) {
137. let season = seasonsTable.fetch(s.id)
138. let eps = []
139. for (eid of season.episodes) { eps.push(eid) }
140. for (eid of ids) { eps.push(eid) }
141. season.episodes = eps
142. if (seasonsTable.update(season.id, season) == null) {
143. out.errors = out.errors + 1
144. out.error = title + ': season ' + season.id + ' not updated: ' + seasonsTable.lastError()
145. }
146. }
147. }
148. out.showSeasons = showSeasons
149. return out
150. }
152. // a MOVIE: one request — its imdb id (if missing) and its poster; nothing else of the record is touched. `pre` = that
153. // request's answer when the caller already made it (details.hl firstStep, tracker#26), else null
154. static syncMovie = (show, res, &pre) => {
155. out = res
156. out.requests = 1
157. details = pre != null ? pre : tmdbGet('/movie/' + show.tmdbId + '?append_to_response=external_ids,credits')
158. if (details.failed != null) { out.errors = 1 out.error = show.title + ': ' + details.failed return out }
159. if (pre == null) { out.details = details }
160. ids = externalIdsFor(show, details.external_ids, false, false)
161. out.ids = ids.filled
162. poster = syncPoster(show, details.poster_path)
163. out.requests = out.requests + poster.requests
164. out.posters = poster.saved
165. if (poster.failed != null) { out.errors = out.errors + 1 out.error = show.title + ': ' + poster.failed }
166. m = show
167. m.imdbId = ids.imdbId
168. m.image = poster.image
169. m.tmdbPoster = poster.tmdbPoster
170. if (adultOf(details) != null) { m.adult = adultOf(details) }
171. m.tmdbSync = now()
172. if (showsTable.update(m.id, m) == null) { out.errors = out.errors + 1 out.error = show.title + ': movie not updated: ' + showsTable.lastError() }
173. return out
174. }
176. // Sync ONE show (by our id). Answers counts: { requests, tvmazeRequests, newSeasons, newEpisodes, updatedEpisodes,
177. // updatedSeasons, posters, ids, tvmazeEpisodes, tvmazeSeasons, tvmazeFilled, tvmazeSkipped, errors, error } + `details` (the
178. // details answer with its credits when this call asked for it, else null — tracker#28: the caller stores the credits). Never throws for a TMDB failure — it is counted and the show left as is.
179. static syncShow = (&showId) => { return syncShowPart(showId, null, null) }
180. // the same with the details request (`/tv|movie/<id>?append_to_response=external_ids…`) already answered — `pre`, counted as
181. // this show's first request — so details.hl (tracker#26) asks TMDB once for details, ids AND the cast
182. static syncShowWith = (&showId, &pre) => { return syncShowPart(showId, pre, null) }
183. // ONE PART of a series' sync (tracker#26: a talk show with 4,000 episodes took 10 s in one step, blocking every request):
184. // `only` = { seasons (the TMDB season numbers of this part), finish (false: only those seasons — new ones linked to the show,
185. // nothing else; true: the ids, TVmaze, poster and the show record), tvmaze (false: no TVmaze lookup/merge — tracker#18's light
186. // step) }; null = everything at once. `pre` is required with `only` (its request is the caller's: a part counts only its own
187. // requests).
188. static emptyResult = () => { return { requests = 0 tvmazeRequests = 0 newSeasons = 0 newEpisodes = 0 updatedEpisodes = 0 updatedSeasons = 0 posters = 0 ids = 0 tvmazeEpisodes = 0 tvmazeSeasons = 0 tvmazeFilled = 0 tvmazeSkipped = 0 errors = 0 error = '' details = null } }
189. static syncShowPart = (&showId, &pre, &only) => {
190. let res = emptyResult()
191. show = showsTable.fetch(showId)
192. if (show == null) { res.errors = 1 res.error = 'no show ' + showId return res }
193. if (show.tmdbId == null) { res.errors = 1 res.error = show.title + ': no tmdbId' return res }
194. if (show.type == 'movie') { return syncMovie(show, res, pre) }
196. res.requests = only != null ? 0 : 1
197. details = pre != null ? pre : tmdbGet('/tv/' + show.tmdbId + '?append_to_response=external_ids,aggregate_credits')
198. if (details.failed != null) { res.errors = 1 res.error = show.title + ': ' + details.failed return res }
199. if (pre == null) { res.details = details }
201. // what we have: seasons by number, episodes by tmdbId and by S/E number
202. // (tracker#18: a part reads only ITS seasons' episodes, unless it finishes with the TVmaze merge, which compares them all —
203. // Today, 15,716 episodes, read them all for a one-season change: 20 s and GBs of memory)
204. tvmazeToo = only == null || only.tvmaze != false
205. allEpisodes = only == null || (only.finish && tvmazeToo)
206. seasonsByNumber = {}
207. epByTmdb = {}
208. epByNumber = {}
209. for (sid of show.seasons) {
210. let s = seasonsTable.fetch(sid)
211. if (s != null) {
212. seasonsByNumber['' + s.seasonNumber] = s
213. let epIds = allEpisodes || only.seasons.includes(s.seasonNumber) ? s.episodes : []
214. for (eid of epIds) {
215. let e = episodesTable.fetch(eid)
216. if (e != null) {
217. if (e.tmdbId != null) { epByTmdb['' + e.tmdbId] = e }
218. epByNumber[e.seasonNumber + 'x' + e.episodeNumber] = e
219. }
220. }
221. }
222. }
224. // plain locals for the record literals below: inside a literal, an entry named `show`/`season` would shadow
225. // the variable for every later entry (SPEC "A literal's entries are evaluated in order")
226. showKey = show.id
227. showTmdb = show.tmdbId
228. let showSeasons = []
229. for (sid of show.seasons) { showSeasons.push(sid) }
230. let showChanged = false
232. let wanted = wantedSeasonNumbers(details, seasonsByNumber)
233. if (only != null) {
234. part = []
235. for (n of wanted) { if (only.seasons.includes(n)) { part.push(n) } }
236. wanted = part
237. }
238. for (batch of batchesOf(wanted, 20)) {
239. let names = []
240. for (n of batch) { names.push('season/' + n) }
241. res.requests = res.requests + 1
242. let withSeasons = tmdbGet('/tv/' + show.tmdbId + '?append_to_response=' + names.join(','))
243. if (withSeasons.failed != null) {
244. res.errors = res.errors + 1
245. res.error = show.title + ': ' + withSeasons.failed
246. } else {
247. for (n of batch) {
248. let ts = withSeasons['season/' + n]
249. if (ts != null && ts.episodes != null) {
250. let season = seasonsByNumber['' + n]
251. let seasonIsNew = season == null
252. let seasonChanged = false
253. if (seasonIsNew) {
254. season = { id = newId() seasonNumber = n title = textOr(ts.name) != null ? ts.name : 'Season ' + n
255. release = textOr(ts.air_date) summary = textOr(ts.overview) != null ? ts.overview : ''
256. show = showKey episodes = [] oldId = 'tmdb-season:' + showTmdb + ':' + n }
257. } else {
258. let seasonMigrated = isMigratedRow(season)
259. if (changedText(season.title, textOr(ts.name))) {
260. if (seasonMigrated && season.migratedTitle == null && textOr(season.title) != null) { season.migratedTitle = season.title }
261. season.title = ts.name seasonChanged = true
262. }
263. if (changedText(season.summary, textOr(ts.overview))) {
264. if (seasonMigrated && season.migratedSummary == null && textOr(season.summary) != null) { season.migratedSummary = season.summary }
265. season.summary = ts.overview seasonChanged = true
266. }
267. if (changedText(season.release, textOr(ts.air_date))) { season.release = ts.air_date seasonChanged = true }
268. }
269. let seasonKey = season.id
270. let seasonEpisodes = []
271. for (eid of season.episodes) { seasonEpisodes.push(eid) }
272. for (te of ts.episodes) {
273. if (te.id != null && te.episode_number != null) {
274. let e = epByTmdb['' + te.id]
275. if (e == null) {
276. let byNum = epByNumber[n + 'x' + te.episode_number]
277. if (byNum != null && byNum.tmdbId == null) { e = byNum }
278. }
279. if (e == null) {
280. let fresh = { id = newId() episodeNumber = te.episode_number seasonNumber = n
281. title = textOr(te.name) summary = textOr(te.overview) != null ? te.overview : '' release = textOr(te.air_date)
282. show = showKey season = seasonKey tmdbId = te.id oldId = 'tmdb-episode:' + te.id }
283. let putId = episodesTable.put(fresh)
284. if (putId == null) {
285. res.errors = res.errors + 1
286. res.error = show.title + ': episode ' + te.id + ' not stored: ' + episodesTable.lastError()
287. } else {
288. seasonEpisodes.push(fresh.id)
289. epByTmdb['' + te.id] = fresh
290. epByNumber[n + 'x' + te.episode_number] = fresh
291. res.newEpisodes = res.newEpisodes + 1
292. seasonChanged = true
293. }
294. } else {
295. let changed = false
296. if (e.tmdbId == null) { e.tmdbId = te.id changed = true }
297. // #15: TMDB's "Episode 4" never replaces a real title (one TVmaze filled, or the migrated one)
298. let epMigrated = isMigratedRow(e)
299. if (changedText(e.title, textOr(te.name)) && !(isPlaceholderTitle(te.name) && !isPlaceholderTitle(e.title))) {
300. if (epMigrated && e.migratedTitle == null && textOr(e.title) != null) { e.migratedTitle = e.title }
301. e.title = te.name changed = true
302. }
303. if (changedText(e.summary, textOr(te.overview))) {
304. if (epMigrated && e.migratedSummary == null && textOr(e.summary) != null) { e.migratedSummary = e.summary }
305. e.summary = te.overview changed = true
306. }
307. if (changedText(e.release, textOr(te.air_date))) { e.release = te.air_date changed = true }
308. if (changed) {
309. if (episodesTable.update(e.id, e) == null) {
310. res.errors = res.errors + 1
311. res.error = show.title + ': episode ' + e.id + ' not updated: ' + episodesTable.lastError()
312. } else {
313. epByTmdb['' + e.tmdbId] = e
314. epByNumber[e.seasonNumber + 'x' + e.episodeNumber] = e
315. res.updatedEpisodes = res.updatedEpisodes + 1
316. }
317. }
318. }
319. }
320. }
321. season.episodes = seasonEpisodes
322. if (seasonIsNew) {
323. if (seasonsTable.put(season) == null) {
324. res.errors = res.errors + 1
325. res.error = show.title + ': season ' + n + ' not stored: ' + seasonsTable.lastError()
326. } else {
327. seasonsByNumber['' + n] = season
328. showSeasons.push(season.id)
329. showChanged = true
330. res.newSeasons = res.newSeasons + 1
331. }
332. } else if (seasonChanged) {
333. if (seasonsTable.update(season.id, season) == null) {
334. res.errors = res.errors + 1
335. res.error = show.title + ': season ' + season.id + ' not updated: ' + seasonsTable.lastError()
336. } else {
337. res.updatedSeasons = res.updatedSeasons + 1
338. }
339. }
340. }
341. }
342. }
343. }
345. // a part that is not the last: only the new seasons are linked to the show (the next part reads them)
346. if (only != null && !only.finish) {
347. if (showChanged) {
348. show.seasons = showSeasons
349. if (showsTable.update(show.id, show) == null) { res.errors = res.errors + 1 res.error = show.title + ': show not updated: ' + showsTable.lastError() }
350. }
351. return res
352. }
354. // the external ids (tracker.worldapi.org#12): missing ones from TMDB's external_ids, a missing TVmaze id from TVmaze
355. ids = externalIdsFor(show, details.external_ids, true, tvmazeToo)
356. res.ids = ids.filled
357. res.tvmazeRequests = ids.tvmazeRequests
358. if (ids.failed != null) { res.errors = res.errors + 1 res.error = show.title + ': ' + ids.failed }
360. // tracker.worldapi.org#15: what TVmaze has and TMDB not yet (new episodes/seasons, empty titles and air dates)
361. let tvmazeSummary = null
362. if (numIdOr(ids.tvmzId) != null && tvmazeToo) {
363. tvm = mergeTvmaze(show.title, showKey, ids.tvmzId, seasonsByNumber, epByNumber, showSeasons)
364. res.tvmazeRequests = res.tvmazeRequests + tvm.tvmazeRequests
365. res.tvmazeEpisodes = tvm.newEpisodes
366. res.tvmazeSeasons = tvm.newSeasons
367. res.tvmazeFilled = tvm.filledEpisodes
368. res.tvmazeSkipped = tvm.skipped
369. if (tvm.errors > 0) { res.errors = res.errors + tvm.errors res.error = tvm.error }
370. showSeasons = tvm.showSeasons
371. tvmazeSummary = tvm.summary
372. }
374. // the show itself: status, counts, TMDB's overview, the poster, when it was synced
375. poster = syncPoster(show, details.poster_path)
376. res.requests = res.requests + poster.requests
377. res.posters = poster.saved
378. if (poster.failed != null) { res.errors = res.errors + 1 res.error = show.title + ': ' + poster.failed }
379. show.seasons = showSeasons
380. if (textOr(details.status) != null) { show.status = details.status }
381. if (details.number_of_seasons != null) { show.seasonsCount = details.number_of_seasons }
382. if (details.number_of_episodes != null) { show.episodesCount = details.number_of_episodes }
383. // tracker#18: TMDB's text → tmdbSummary, TVmaze's → tvmazeSummary; `summary` is the creator's own text, never written here
384. if (textOr(details.overview) != null) { show.tmdbSummary = details.overview }
385. if (tvmazeSummary != null) { show.tvmazeSummary = tvmazeSummary }
386. show.image = poster.image
387. show.tmdbPoster = poster.tmdbPoster
388. show.imdbId = ids.imdbId
389. show.tvdbId = ids.tvdbId
390. show.tvmzId = ids.tvmzId
391. if (adultOf(details) != null) { show.adult = adultOf(details) }
392. if (textOr(details.type) != null) { show.tmdbType = details.type show.kind = kindOfTitle(details.type, show.genres) }
393. show.tmdbSync = now()
394. if (showsTable.update(show.id, show) == null) { res.errors = res.errors + 1 res.error = show.title + ': show not updated: ' + showsTable.lastError() }
395. return res
396. }
398. // ---- the LIGHT step of the daily delta run (tracker#18) ---------------------------------------------------------------
399. // A changed title NOBODY follows (dailysync.hl): its details (+ ids + credits: the record, applySynced) and only the seasons
400. // that can have changed — the ones we don't have, the ones where TMDB counts MORE episodes than we have (fewer: TVmaze's
401. // extras, nothing to fetch), and the newest one (new or renamed episodes land there). No TVmaze (its merge only matters for the followed shows' lists; their full step still does
402. // it). Real data (2026-10-01): Today (67 seasons / 15,716 episodes) and EastEnders (43 / 7,349) change every day; their full
403. // sync blocked the server 20.8 s each and grew the process by ~5 GB each.
404. static changedSeasonNumbers = (&details, &show) => {
405. ours = {}
406. for (sid of show.seasons) {
407. let s = seasonsTable.fetch(sid)
408. if (s != null) { ours['' + s.seasonNumber] = s.episodes.length }
409. }
410. let latest = -1
411. for (x of (details.seasons != null ? details.seasons : [])) {
412. if (x != null && x.season_number != null && x.season_number > latest && (x.episode_count == null || x.episode_count > 0)) { latest = x.season_number }
413. }
414. out = []
415. for (x of (details.seasons != null ? details.seasons : [])) {
416. if (x != null && x.season_number != null) {
417. let n = x.season_number
418. if (n == latest || ours['' + n] == null || (x.episode_count != null && x.episode_count > ours['' + n])) { out.push(n) }
419. }
420. }
421. return out
422. }
423. static syncShowDelta = (&showId) => {
424. show = showsTable.fetch(showId)
425. if (show == null || show.tmdbId == null || show.type == 'movie') { return syncShow(showId) }
426. details = tmdbGet('/tv/' + show.tmdbId + '?append_to_response=external_ids,aggregate_credits')
427. if (details.failed != null) {
428. let res = emptyResult()
429. res.requests = 1
430. res.errors = 1
431. res.error = show.title + ': ' + details.failed
432. return res
433. }
434. r = syncShowPart(showId, details, { seasons = changedSeasonNumbers(details, show) finish = true tvmaze = false })
435. r.requests = r.requests + 1
436. r.details = details
437. return r
438. }
440. // flush the three tables' index/meta state to disk (after a run, and every few shows)
441. static persistSync = () => {
442. showsTable.persist()
443. seasonsTable.persist()
444. episodesTable.persist()
445. return true
446. }