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import * as express from 'express'
import { Activity, ActivityPubCollection, ActivityPubOrderedCollection, ActivityType, RootActivity } from '../../../shared'
import { logger } from '../../helpers'
import { isActivityValid } from '../../helpers/custom-validators/activitypub/activity'
import { processCreateActivity, processFlagActivity, processUpdateActivity } from '../../lib'
import { processAcceptActivity } from '../../lib/activitypub/process-accept'
import { processAddActivity } from '../../lib/activitypub/process-add'
import { processAnnounceActivity } from '../../lib/activitypub/process-announce'
import { processDeleteActivity } from '../../lib/activitypub/process-delete'
import { processFollowActivity } from '../../lib/activitypub/process-follow'
import { asyncMiddleware, checkSignature, localAccountValidator, signatureValidator } from '../../middlewares'
import { activityPubValidator } from '../../middlewares/validators/activitypub/activity'
import { AccountInstance } from '../../models/account/account-interface'
const processActivity: { [ P in ActivityType ]: (activity: Activity, inboxAccount?: AccountInstance) => Promise<any> } = {
Create: processCreateActivity,
Add: processAddActivity,
Update: processUpdateActivity,
Flag: processFlagActivity,
Delete: processDeleteActivity,
Follow: processFollowActivity,
Accept: processAcceptActivity,
Announce: processAnnounceActivity
}
const inboxRouter = express.Router()
inboxRouter.post('/inbox',
signatureValidator,
asyncMiddleware(checkSignature),
activityPubValidator,
asyncMiddleware(inboxController)
)
inboxRouter.post('/account/:name/inbox',
signatureValidator,
asyncMiddleware(checkSignature),
localAccountValidator,
activityPubValidator,
asyncMiddleware(inboxController)
)
// ---------------------------------------------------------------------------
export {
inboxRouter
}
// ---------------------------------------------------------------------------
async function inboxController (req: express.Request, res: express.Response, next: express.NextFunction) {
const rootActivity: RootActivity = req.body
let activities: Activity[] = []
if ([ 'Collection', 'CollectionPage' ].indexOf(rootActivity.type) !== -1) {
activities = (rootActivity as ActivityPubCollection).items
} else if ([ 'OrderedCollection', 'OrderedCollectionPage' ].indexOf(rootActivity.type) !== -1) {
activities = (rootActivity as ActivityPubOrderedCollection).orderedItems
} else {
activities = [ rootActivity as Activity ]
}
// Only keep activities we are able to process
logger.debug('Filtering activities...', { activities })
activities = activities.filter(a => isActivityValid(a))
logger.debug('We keep %d activities.', activities.length, { activities })
await processActivities(activities, res.locals.account)
res.status(204).end()
}
async function processActivities (activities: Activity[], inboxAccount?: AccountInstance) {
for (const activity of activities) {
const activityProcessor = processActivity[activity.type]
if (activityProcessor === undefined) {
logger.warn('Unknown activity type %s.', activity.type, { activityId: activity.id })
continue
}
await activityProcessor(activity, inboxAccount)
}
}
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