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1 | import * as express from 'express' | |
2 | import { buildNSFWFilter } from '../../helpers/express-utils' | |
3 | import { VideoModel } from '../../models/video/video' | |
4 | import { asyncMiddleware, optionalAuthenticate, videosOverviewValidator } from '../../middlewares' | |
5 | import { TagModel } from '../../models/video/tag' | |
6 | import { CategoryOverview, ChannelOverview, TagOverview, VideosOverview } from '../../../shared/models/overviews' | |
7 | import { MEMOIZE_TTL, OVERVIEWS } from '../../initializers/constants' | |
8 | import * as memoizee from 'memoizee' | |
9 | import { logger } from '@server/helpers/logger' | |
10 | ||
11 | const overviewsRouter = express.Router() | |
12 | ||
13 | overviewsRouter.get('/videos', | |
14 | videosOverviewValidator, | |
15 | optionalAuthenticate, | |
16 | asyncMiddleware(getVideosOverview) | |
17 | ) | |
18 | ||
19 | // --------------------------------------------------------------------------- | |
20 | ||
21 | export { overviewsRouter } | |
22 | ||
23 | // --------------------------------------------------------------------------- | |
24 | ||
25 | const buildSamples = memoizee(async function () { | |
26 | const [ categories, channels, tags ] = await Promise.all([ | |
27 | VideoModel.getRandomFieldSamples('category', OVERVIEWS.VIDEOS.SAMPLE_THRESHOLD, OVERVIEWS.VIDEOS.SAMPLES_COUNT), | |
28 | VideoModel.getRandomFieldSamples('channelId', OVERVIEWS.VIDEOS.SAMPLE_THRESHOLD, OVERVIEWS.VIDEOS.SAMPLES_COUNT), | |
29 | TagModel.getRandomSamples(OVERVIEWS.VIDEOS.SAMPLE_THRESHOLD, OVERVIEWS.VIDEOS.SAMPLES_COUNT) | |
30 | ]) | |
31 | ||
32 | const result = { categories, channels, tags } | |
33 | ||
34 | logger.debug('Building samples for overview endpoint.', { result }) | |
35 | ||
36 | return result | |
37 | }, { maxAge: MEMOIZE_TTL.OVERVIEWS_SAMPLE }) | |
38 | ||
39 | // This endpoint could be quite long, but we cache it | |
40 | async function getVideosOverview (req: express.Request, res: express.Response) { | |
41 | const attributes = await buildSamples() | |
42 | ||
43 | const page = req.query.page || 1 | |
44 | const index = page - 1 | |
45 | ||
46 | const categories: CategoryOverview[] = [] | |
47 | const channels: ChannelOverview[] = [] | |
48 | const tags: TagOverview[] = [] | |
49 | ||
50 | await Promise.all([ | |
51 | getVideosByCategory(attributes.categories, index, res, categories), | |
52 | getVideosByChannel(attributes.channels, index, res, channels), | |
53 | getVideosByTag(attributes.tags, index, res, tags) | |
54 | ]) | |
55 | ||
56 | const result: VideosOverview = { | |
57 | categories, | |
58 | channels, | |
59 | tags | |
60 | } | |
61 | ||
62 | return res.json(result) | |
63 | } | |
64 | ||
65 | async function getVideosByTag (tagsSample: string[], index: number, res: express.Response, acc: TagOverview[]) { | |
66 | if (tagsSample.length <= index) return | |
67 | ||
68 | const tag = tagsSample[index] | |
69 | const videos = await getVideos(res, { tagsOneOf: [ tag ] }) | |
70 | ||
71 | if (videos.length === 0) return | |
72 | ||
73 | acc.push({ | |
74 | tag, | |
75 | videos | |
76 | }) | |
77 | } | |
78 | ||
79 | async function getVideosByCategory (categoriesSample: number[], index: number, res: express.Response, acc: CategoryOverview[]) { | |
80 | if (categoriesSample.length <= index) return | |
81 | ||
82 | const category = categoriesSample[index] | |
83 | const videos = await getVideos(res, { categoryOneOf: [ category ] }) | |
84 | ||
85 | if (videos.length === 0) return | |
86 | ||
87 | acc.push({ | |
88 | category: videos[0].category, | |
89 | videos | |
90 | }) | |
91 | } | |
92 | ||
93 | async function getVideosByChannel (channelsSample: number[], index: number, res: express.Response, acc: ChannelOverview[]) { | |
94 | if (channelsSample.length <= index) return | |
95 | ||
96 | const channelId = channelsSample[index] | |
97 | const videos = await getVideos(res, { videoChannelId: channelId }) | |
98 | ||
99 | if (videos.length === 0) return | |
100 | ||
101 | acc.push({ | |
102 | channel: videos[0].channel, | |
103 | videos | |
104 | }) | |
105 | } | |
106 | ||
107 | async function getVideos ( | |
108 | res: express.Response, | |
109 | where: { videoChannelId?: number, tagsOneOf?: string[], categoryOneOf?: number[] } | |
110 | ) { | |
111 | const query = Object.assign({ | |
112 | start: 0, | |
113 | count: 12, | |
114 | sort: '-createdAt', | |
115 | includeLocalVideos: true, | |
116 | nsfw: buildNSFWFilter(res), | |
117 | withFiles: false, | |
118 | countVideos: false | |
119 | }, where) | |
120 | ||
121 | const { data } = await VideoModel.listForApi(query) | |
122 | ||
123 | return data.map(d => d.toFormattedJSON()) | |
124 | } |