tracker

4.1 KB

1. // watches.hl — PER-USER WATCH STATE (episode/season checks, tracker.worldapi.org#4), reused as-is
2. // (not copied) by /unwatched and /schedule (tickets #5/#6: "same check icon and watch logic as the
3. // show page — reuse, don't copy"). storage/mpackdb/watches.db, migrated by tools/migrate.hl
4. // (tracker.worldapi.org#2): { targetType ('episode'|'season'|'movie'), target, user, at, oldId }. 'movie' (mission 058,
5. // tracker#24): target = the movie's shows.db id. A season's CHECK on the page is derived from its episodes (components/show.hl).
6. import { MPackDB } from 'hl:mpackdb'
7. import { env } from 'hl:proc'
8. import { now } from 'hl:time'
9. import { randomBytes } from 'hl:crypto'
11. static envOr = (&name, &fallback) => {
12. let v = env(name)
13. return v != null && v.trim() != '' ? v.trim() : fallback
14. }
15. static storageDir = envOr('TRACKER_STORAGE', './storage/mpackdb')
16. static watchesTable = new MPackDB(file = storageDir + '/watches.db', primaryKey = '@id', indexes = ['!oldId'])
18. // every watch of this user — a linear scan (11692 rows total across every user, migrated data; cheap
19. // once per page load) — no declared index on `user`
20. // mission 062: KEPT per user until that user's next write (setWatched) — one watch click asked for it 3 times (the face, then
21. // the page's re-mount for the session sync: rows + watchedEpisodes), each a scan + decode of every watch (~25 ms on the real data).
22. // One process per storage (hybriel#21): every write goes through setWatched below. Flat statics, written key by key (plain data
23. // deep-copies on assignment)
24. static watchCache = {}
25. static watchCacheOk = {}
26. static watchesOfUser = (&userId) => {
27. if (userId == null) { return [] }
28. if (watchCacheOk[userId] == true) { return watchCache[userId] }
29. let out = []
30. for (w of watchesTable.find(null, null)) { if (w.user == userId) { out.push(w) } }
31. watchCache[userId] = out
32. watchCacheOk[userId] = true
33. return out
34. }
36. // '<targetType>:<target>' → true for every watch in `rows`: built ONCE per page load so a list asks
37. // `watched['episode:' + e.id] == true` instead of `isWatched` scanning all the user's watches per episode
38. // (/my/unwatched, tracker.worldapi.org#8: 831 rows × 11,692 watches took ~15 s)
39. static watchedSet = (&rows) => {
40. let m = {}
41. for (w of rows) { if (w.target != null) { m[w.targetType + ':' + w.target] = true } }
42. return m
43. }
45. static findWatch = (&rows, &targetType, &targetId) => {
46. for (w of rows) { if (w.targetType == targetType && w.target == targetId) { return w } }
47. return null
48. }
49. static isWatched = (&rows, &targetType, &targetId) => { return findWatch(rows, targetType, targetId) != null }
51. // the check's class — "a disc with a check in it", solid once watched, regular while not (the
52. // SAME icon and class the show page uses, tracker.worldapi.org#4/#5 — /unwatched and /schedule
53. // reuse this instead of each declaring their own)
54. static watchClassOf = (&watched) => { return watched ? 'checkicon solid' : 'checkicon regular' }
56. // a NEW watch's oldId can't be null: the table's `!oldId` UNIQUE index would refuse a second one
57. // (the migrated rows all carry a real Mongo hex id; a fresh watch gets its own unique marker instead)
58. static setWatched = (&userId, targetType, &targetId, &rows, &watched) => {
59. let existing = findWatch(rows, targetType, targetId)
60. watchCacheOk[userId] = false
61. if (watched) {
62. if (existing != null) { return true }
63. let id = watchesTable.put({ id = randomBytes(8, 'hex') targetType = targetType target = targetId user = userId at = now() oldId = 'app:' + randomBytes(8, 'hex') })
64. return id != null
65. }
66. if (existing == null) { return true }
67. return watchesTable.delete(existing.id) > 0
68. }
70. // a season check toggles the season's OWN watch record AND every one of its episodes (creator: "if
71. // the season is checked or unchecked all its episodes get checked or unchecked") — `rows` is the
72. // snapshot from BEFORE this batch; every target below is distinct, so the staleness across the loop
73. // never matters (no two calls touch the same target)
74. static setSeasonWatched = (&userId, &seasonId, &episodeIds, &rows, &watched) => {
75. let ok = setWatched(userId, 'season', seasonId, rows, watched)
76. for (eid of episodeIds) { ok = setWatched(userId, 'episode', eid, rows, watched) && ok }
77. return ok
78. }