PeerTube/server/helpers/activitypub.ts

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import { ResultList } from '../../shared/models'
import { Activity, ActivityPubActor } from '../../shared/models/activitypub'
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import { ACTIVITY_PUB } from '../initializers'
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import { ActorModel } from '../models/activitypub/actor'
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import { signObject } from './peertube-crypto'
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function activityPubContextify <T> (data: T) {
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return Object.assign(data,{
'@context': [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1',
{
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'RsaSignature2017': 'https://w3id.org/security#RsaSignature2017',
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'Hashtag': 'as:Hashtag',
'uuid': 'http://schema.org/identifier',
'category': 'http://schema.org/category',
'licence': 'http://schema.org/license',
'sensitive': 'as:sensitive',
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'language': 'http://schema.org/inLanguage',
'views': 'http://schema.org/Number',
'size': 'http://schema.org/Number',
'commentsEnabled': 'http://schema.org/Boolean',
'support': 'http://schema.org/Text'
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},
{
likes: {
'@id': 'as:likes',
'@type': '@id'
},
dislikes: {
'@id': 'as:dislikes',
'@type': '@id'
},
shares: {
'@id': 'as:shares',
'@type': '@id'
},
comments: {
'@id': 'as:comments',
'@type': '@id'
}
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}
]
})
}
function activityPubCollection (url: string, results: any[]) {
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return {
id: url,
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type: 'OrderedCollection',
totalItems: results.length,
orderedItems: results
}
}
function activityPubCollectionPagination (url: string, page: any, result: ResultList<any>) {
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let next: string
let prev: string
// Assert page is a number
page = parseInt(page, 10)
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// There are more results
if (result.total > page * ACTIVITY_PUB.COLLECTION_ITEMS_PER_PAGE) {
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next = url + '?page=' + (page + 1)
}
if (page > 1) {
prev = url + '?page=' + (page - 1)
}
const orderedCollectionPagination = {
id: url + '?page=' + page,
type: 'OrderedCollectionPage',
prev,
next,
partOf: url,
orderedItems: result.data
}
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if (page === 1) {
return activityPubContextify({
id: url,
type: 'OrderedCollection',
totalItems: result.total,
first: orderedCollectionPagination
})
} else {
orderedCollectionPagination['totalItems'] = result.total
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}
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return orderedCollectionPagination
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}
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function buildSignedActivity (byActor: ActorModel, data: Object) {
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const activity = activityPubContextify(data)
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return signObject(byActor, activity) as Promise<Activity>
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}
function getActorUrl (activityActor: string | ActivityPubActor) {
if (typeof activityActor === 'string') return activityActor
return activityActor.id
}
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// ---------------------------------------------------------------------------
export {
getActorUrl,
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activityPubContextify,
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activityPubCollectionPagination,
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activityPubCollection,
buildSignedActivity
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}