Avoid too many requests and fetching outbox
[oweals/peertube.git] / server / controllers / activitypub / outbox.ts
1 import * as express from 'express'
2 import { Activity } from '../../../shared/models/activitypub/activity'
3 import { activityPubCollectionPagination } from '../../helpers/activitypub'
4 import { pageToStartAndCount } from '../../helpers/core-utils'
5 import { ACTIVITY_PUB } from '../../initializers/constants'
6 import { announceActivityData, createActivityData } from '../../lib/activitypub/send'
7 import { buildAudience } from '../../lib/activitypub/send/misc'
8 import { getAnnounceActivityPubUrl } from '../../lib/activitypub/url'
9 import { asyncMiddleware, localAccountValidator } from '../../middlewares'
10 import { AccountModel } from '../../models/account/account'
11 import { ActorModel } from '../../models/activitypub/actor'
12 import { VideoModel } from '../../models/video/video'
13
14 const outboxRouter = express.Router()
15
16 outboxRouter.get('/accounts/:name/outbox',
17   localAccountValidator,
18   asyncMiddleware(outboxController)
19 )
20
21 // ---------------------------------------------------------------------------
22
23 export {
24   outboxRouter
25 }
26
27 // ---------------------------------------------------------------------------
28
29 async function outboxController (req: express.Request, res: express.Response, next: express.NextFunction) {
30   const account: AccountModel = res.locals.account
31   const actor = account.Actor
32
33   const page = req.query.page || 1
34   const { start, count } = pageToStartAndCount(page, ACTIVITY_PUB.COLLECTION_ITEMS_PER_PAGE)
35
36   const data = await VideoModel.listAllAndSharedByActorForOutbox(actor.id, start, count)
37   const activities: Activity[] = []
38
39   // Avoid too many SQL requests
40   const actors = data.data.map(v => v.VideoChannel.Account.Actor)
41   actors.push(actor)
42
43   const followersMatrix = await ActorModel.getActorsFollowerSharedInboxUrls(actors, undefined)
44
45   for (const video of data.data) {
46     const videoObject = video.toActivityPubObject()
47
48     const byActor = video.VideoChannel.Account.Actor
49     const createActivityAudience = buildAudience(followersMatrix[byActor.id])
50
51     // This is a shared video
52     if (video.VideoShares !== undefined && video.VideoShares.length !== 0) {
53       const createActivity = await createActivityData(video.url, byActor, videoObject, undefined, createActivityAudience)
54
55       const announceAudience = buildAudience(followersMatrix[actor.id])
56       const url = getAnnounceActivityPubUrl(video.url, actor)
57       const announceActivity = await announceActivityData(url, actor, createActivity, undefined, announceAudience)
58
59       activities.push(announceActivity)
60     } else {
61       const createActivity = await createActivityData(video.url, byActor, videoObject, undefined, createActivityAudience)
62
63       activities.push(createActivity)
64     }
65   }
66
67   const newResult = {
68     data: activities,
69     total: data.total
70   }
71   const json = activityPubCollectionPagination(account.Actor.url + '/outbox', page, newResult)
72
73   return res.json(json).end()
74 }