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import { Transaction } from 'sequelize'
import { Activity, ActivityAudience } from '../../../../shared/models/activitypub'
import { logger } from '../../../helpers/logger'
import { ACTIVITY_PUB } from '../../../initializers'
import { ActorModel } from '../../../models/activitypub/actor'
import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
import { VideoModel } from '../../../models/video/video'
import { VideoCommentModel } from '../../../models/video/video-comment'
import { VideoShareModel } from '../../../models/video/video-share'
import { activitypubHttpJobScheduler, ActivityPubHttpPayload } from '../../jobs/activitypub-http-job-scheduler'
async function forwardActivity (
activity: Activity,
t: Transaction,
followersException: ActorModel[] = [],
additionalFollowerUrls: string[] = []
) {
const to = activity.to || []
const cc = activity.cc || []
const followersUrls = additionalFollowerUrls
for (const dest of to.concat(cc)) {
if (dest.endsWith('/followers')) {
followersUrls.push(dest)
}
}
const toActorFollowers = await ActorModel.listByFollowersUrls(followersUrls, t)
const uris = await computeFollowerUris(toActorFollowers, followersException, t)
if (uris.length === 0) {
logger.info('0 followers for %s, no forwarding.', toActorFollowers.map(a => a.id).join(', '))
return undefined
}
logger.debug('Creating forwarding job.', { uris })
const jobPayload: ActivityPubHttpPayload = {
uris,
body: activity
}
return activitypubHttpJobScheduler.createJob(t, 'activitypubHttpBroadcastHandler', jobPayload)
}
async function broadcastToFollowers (
data: any,
byActor: ActorModel,
toActorFollowers: ActorModel[],
t: Transaction,
actorsException: ActorModel[] = []
) {
const uris = await computeFollowerUris(toActorFollowers, actorsException, t)
return broadcastTo(uris, data, byActor, t)
}
async function broadcastToActors (
data: any,
byActor: ActorModel,
toActors: ActorModel[],
t: Transaction,
actorsException: ActorModel[] = []
) {
const uris = await computeUris(toActors, actorsException)
return broadcastTo(uris, data, byActor, t)
}
async function broadcastTo (uris: string[], data: any, byActor: ActorModel, t: Transaction) {
if (uris.length === 0) return undefined
logger.debug('Creating broadcast job.', { uris })
const jobPayload: ActivityPubHttpPayload = {
uris,
signatureActorId: byActor.id,
body: data
}
return activitypubHttpJobScheduler.createJob(t, 'activitypubHttpBroadcastHandler', jobPayload)
}
async function unicastTo (data: any, byActor: ActorModel, toActorUrl: string, t: Transaction) {
logger.debug('Creating unicast job.', { uri: toActorUrl })
const jobPayload: ActivityPubHttpPayload = {
uris: [ toActorUrl ],
signatureActorId: byActor.id,
body: data
}
return activitypubHttpJobScheduler.createJob(t, 'activitypubHttpUnicastHandler', jobPayload)
}
function getOriginVideoAudience (video: VideoModel, actorsInvolvedInVideo: ActorModel[]) {
return {
to: [ video.VideoChannel.Account.Actor.url ],
cc: actorsInvolvedInVideo.map(a => a.followersUrl)
}
}
function getOriginVideoCommentAudience (
videoComment: VideoCommentModel,
threadParentComments: VideoCommentModel[],
actorsInvolvedInVideo: ActorModel[],
isOrigin = false
) {
const to = [ ACTIVITY_PUB.PUBLIC ]
const cc = [ ]
// Owner of the video we comment
if (isOrigin === false) {
cc.push(videoComment.Video.VideoChannel.Account.Actor.url)
}
// Followers of the poster
cc.push(videoComment.Account.Actor.followersUrl)
// Send to actors we reply to
for (const parentComment of threadParentComments) {
cc.push(parentComment.Account.Actor.url)
}
return {
to,
cc: cc.concat(actorsInvolvedInVideo.map(a => a.followersUrl))
}
}
function getObjectFollowersAudience (actorsInvolvedInObject: ActorModel[]) {
return {
to: actorsInvolvedInObject.map(a => a.followersUrl),
cc: []
}
}
async function getActorsInvolvedInVideo (video: VideoModel, t: Transaction) {
const actors = await VideoShareModel.loadActorsByShare(video.id, t)
actors.push(video.VideoChannel.Account.Actor)
return actors
}
async function getAudience (actorSender: ActorModel, t: Transaction, isPublic = true) {
const followerInboxUrls = await actorSender.getFollowerSharedInboxUrls(t)
return buildAudience(followerInboxUrls, isPublic)
}
function buildAudience (followerInboxUrls: string[], isPublic = true) {
// Thanks Mastodon: https://github.com/tootsuite/mastodon/blob/master/app/lib/activitypub/tag_manager.rb#L47
let to = []
let cc = []
if (isPublic) {
to = [ ACTIVITY_PUB.PUBLIC ]
cc = followerInboxUrls
} else { // Unlisted
to = followerInboxUrls
cc = [ ACTIVITY_PUB.PUBLIC ]
}
return { to, cc }
}
function audiencify (object: any, audience: ActivityAudience) {
return Object.assign(object, audience)
}
async function computeFollowerUris (toActorFollower: ActorModel[], actorsException: ActorModel[], t: Transaction) {
const toActorFollowerIds = toActorFollower.map(a => a.id)
const result = await ActorFollowModel.listAcceptedFollowerSharedInboxUrls(toActorFollowerIds, t)
const sharedInboxesException = actorsException.map(f => f.sharedInboxUrl || f.inboxUrl)
return result.data.filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
}
async function computeUris (toActors: ActorModel[], actorsException: ActorModel[] = []) {
const toActorSharedInboxesSet = new Set(toActors.map(a => a.sharedInboxUrl || a.inboxUrl))
const sharedInboxesException = actorsException.map(f => f.sharedInboxUrl || f.inboxUrl)
return Array.from(toActorSharedInboxesSet)
.filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
}
// ---------------------------------------------------------------------------
export {
broadcastToFollowers,
unicastTo,
buildAudience,
getAudience,
getOriginVideoAudience,
getActorsInvolvedInVideo,
getObjectFollowersAudience,
forwardActivity,
audiencify,
getOriginVideoCommentAudience,
computeUris,
broadcastToActors
}
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