tracker

3.4 KB

1. // shows.hl — READ-ONLY data access for a show's page (tracker.worldapi.org#4): shows, seasons,
2. // episodes, persons, genres (storage/mpackdb/, migrated by tools/migrate.hl, tracker.worldapi.org#2).
3. // Kept apart from watches.hl (the per-user watch state) and from components/show.hl (the page itself)
4. // so /unwatched and /schedule (tickets #5/#6, "reuse, don't copy") can import the same functions.
5. //
6. // No declared index beyond the migration's own ['!oldId'] (opening a table with indexes it wasn't
7. // created with is untested territory, hybriel#21 "opening a table rewrites its files") — a slug
8. // lookup is a linear scan of ~9500 shows, cheap for one page load.
9. import { MPackDB } from 'hl:mpackdb'
10. import { env } from 'hl:proc'
12. static envOr = (name, fallback) => {
13. let v = env(name)
14. return v != null && v.trim() != '' ? v.trim() : fallback
15. }
16. static storageDir = envOr('TRACKER_STORAGE', './storage/mpackdb')
18. static genresTable = new MPackDB(file = storageDir + '/genres.db', primaryKey = '@id', indexes = ['!oldId'])
19. static personsTable = new MPackDB(file = storageDir + '/persons.db', primaryKey = '@id', indexes = ['!oldId'])
20. static showsTable = new MPackDB(file = storageDir + '/shows.db', primaryKey = '@id', indexes = ['!oldId'])
21. static seasonsTable = new MPackDB(file = storageDir + '/seasons.db', primaryKey = '@id', indexes = ['!oldId'])
22. static episodesTable = new MPackDB(file = storageDir + '/episodes.db', primaryKey = '@id', indexes = ['!oldId'])
24. // the show with this urlSegment (slug), or null
25. static showBySlug = (slug) => {
26. if (slug == null || hlTypeName(slug) != 'String' || slug == '') { return null }
27. for (s of showsTable.find(null, null)) { if (s.urlSegment == slug) { return s } }
28. return null
29. }
31. static genreById = (id) => { return id == null ? null : genresTable.fetch(id) }
32. static personById = (id) => { return id == null ? null : personsTable.fetch(id) }
33. static seasonById = (id) => { return id == null ? null : seasonsTable.fetch(id) }
35. // insertion sort, hand-written (no list sort(), hybriel#1) — a show has a handful of seasons at most
36. static insertDesc = (sorted, s) => {
37. let out = []
38. let inserted = false
39. for (x of sorted) {
40. if (!inserted && s.seasonNumber >= x.seasonNumber) { out.push(s) inserted = true }
41. out.push(x)
42. }
43. if (!inserted) { out.push(s) }
44. return out
45. }
46. static insertAsc = (sorted, e) => {
47. let out = []
48. let inserted = false
49. for (x of sorted) {
50. if (!inserted && e.episodeNumber <= x.episodeNumber) { out.push(e) inserted = true }
51. out.push(x)
52. }
53. if (!inserted) { out.push(e) }
54. return out
55. }
57. // a show's seasons, latest (highest seasonNumber) first — creator: "all seasons in reverse order,
58. // latest on top"
59. static seasonsOfShow = (show) => {
60. let sorted = []
61. for (id of show.seasons) {
62. let s = seasonsTable.fetch(id)
63. if (s != null) { sorted = insertDesc(sorted, s) }
64. }
65. return sorted
66. }
68. // a season's episodes, in episode-number order
69. static episodesOfSeason = (season) => {
70. let sorted = []
71. for (id of season.episodes) {
72. let e = episodesTable.fetch(id)
73. if (e != null) { sorted = insertAsc(sorted, e) }
74. }
75. return sorted
76. }
78. // the poster file name (oldId + the migrated extension) — null when either is missing; served at
79. // /posters/<name> (project.hl), which falls back to a placeholder when the file itself isn't there
80. // yet (the real poster files are not part of the mongo export, see the report's `open`)
81. static posterName = (show) => {
82. if (show.oldId == null || show.image == null || show.image == '') { return null }
83. return show.oldId + '.' + show.image
84. }