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import { join } from 'path'
import * as request from 'request'
import * as url from 'url'
import { ActivityIconObject } from '../../shared/index'
import { ActivityPubActor } from '../../shared/models/activitypub/activitypub-actor'
import { ResultList } from '../../shared/models/result-list.model'
import { database as db, REMOTE_SCHEME } from '../initializers'
import { ACTIVITY_PUB_ACCEPT_HEADER, CONFIG, STATIC_PATHS } from '../initializers/constants'
import { VideoInstance } from '../models/video/video-interface'
import { isRemoteAccountValid } from './custom-validators'
import { logger } from './logger'
import { doRequest, doRequestAndSaveToFile } from './requests'
function generateThumbnailFromUrl (video: VideoInstance, icon: ActivityIconObject) {
const thumbnailName = video.getThumbnailName()
const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, thumbnailName)
const options = {
method: 'GET',
uri: icon.url
}
return doRequestAndSaveToFile(options, thumbnailPath)
}
function getActivityPubUrl (type: 'video' | 'videoChannel' | 'account', id: string) {
if (type === 'video') return CONFIG.WEBSERVER.URL + '/videos/watch/' + id
else if (type === 'videoChannel') return CONFIG.WEBSERVER.URL + '/video-channels/' + id
else if (type === 'account') return CONFIG.WEBSERVER.URL + '/account/' + id
return ''
}
async function getOrCreateAccount (accountUrl: string) {
let account = await db.Account.loadByUrl(accountUrl)
// We don't have this account in our database, fetch it on remote
if (!account) {
const res = await fetchRemoteAccountAndCreateServer(accountUrl)
if (res === undefined) throw new Error('Cannot fetch remote account.')
// Save our new account in database
const account = res.account
await account.save()
}
return account
}
async function fetchRemoteAccountAndCreateServer (accountUrl: string) {
const options = {
uri: accountUrl,
method: 'GET',
headers: {
'Accept': ACTIVITY_PUB_ACCEPT_HEADER
}
}
logger.info('Fetching remote account %s.', accountUrl)
let requestResult
try {
requestResult = await doRequest(options)
} catch (err) {
logger.warn('Cannot fetch remote account %s.', accountUrl, err)
return undefined
}
const accountJSON: ActivityPubActor = JSON.parse(requestResult.body)
if (isRemoteAccountValid(accountJSON) === false) {
logger.debug('Remote account JSON is not valid.', { accountJSON })
return undefined
}
const followersCount = await fetchAccountCount(accountJSON.followers)
const followingCount = await fetchAccountCount(accountJSON.following)
const account = db.Account.build({
uuid: accountJSON.uuid,
name: accountJSON.preferredUsername,
url: accountJSON.url,
publicKey: accountJSON.publicKey.publicKeyPem,
privateKey: null,
followersCount: followersCount,
followingCount: followingCount,
inboxUrl: accountJSON.inbox,
outboxUrl: accountJSON.outbox,
sharedInboxUrl: accountJSON.endpoints.sharedInbox,
followersUrl: accountJSON.followers,
followingUrl: accountJSON.following
})
const accountHost = url.parse(account.url).host
const serverOptions = {
where: {
host: accountHost
},
defaults: {
host: accountHost
}
}
const [ server ] = await db.Server.findOrCreate(serverOptions)
account.set('serverId', server.id)
return { account, server }
}
function fetchRemoteVideoPreview (video: VideoInstance) {
// FIXME: use url
const host = video.VideoChannel.Account.Server.host
const path = join(STATIC_PATHS.PREVIEWS, video.getPreviewName())
return request.get(REMOTE_SCHEME.HTTP + '://' + host + path)
}
async function fetchRemoteVideoDescription (video: VideoInstance) {
const options = {
uri: video.url
}
const { body } = await doRequest(options)
return body.description ? body.description : ''
}
function activityPubContextify <T> (data: T) {
return Object.assign(data,{
'@context': [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1',
{
'Hashtag': 'as:Hashtag',
'uuid': 'http://schema.org/identifier',
'category': 'http://schema.org/category',
'licence': 'http://schema.org/license',
'nsfw': 'as:sensitive',
'language': 'http://schema.org/inLanguage',
'views': 'http://schema.org/Number',
'size': 'http://schema.org/Number'
}
]
})
}
function activityPubCollectionPagination (url: string, page: number, result: ResultList<any>) {
const baseUrl = url.split('?').shift
const obj = {
id: baseUrl,
type: 'Collection',
totalItems: result.total,
first: {
id: baseUrl + '?page=' + page,
type: 'CollectionPage',
totalItems: result.total,
next: baseUrl + '?page=' + (page + 1),
partOf: baseUrl,
items: result.data
}
}
return activityPubContextify(obj)
}
// ---------------------------------------------------------------------------
export {
fetchRemoteAccountAndCreateServer,
activityPubContextify,
activityPubCollectionPagination,
getActivityPubUrl,
generateThumbnailFromUrl,
getOrCreateAccount,
fetchRemoteVideoPreview,
fetchRemoteVideoDescription
}
// ---------------------------------------------------------------------------
async function fetchAccountCount (url: string) {
const options = {
uri: url,
method: 'GET'
}
let requestResult
try {
requestResult = await doRequest(options)
} catch (err) {
logger.warn('Cannot fetch remote account count %s.', url, err)
return undefined
}
return requestResult.totalItems ? requestResult.totalItems : 0
}
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