Begin activitypub

server/controllers/activitypub/inbox.ts

@@ -0,0 +1,72 @@
+import * as express from 'express'
+
+import {
+  processCreateActivity,
+  processUpdateActivity,
+  processFlagActivity
+} from '../../lib'
+import {
+  Activity,
+  ActivityType,
+  RootActivity,
+  ActivityPubCollection,
+  ActivityPubOrderedCollection
+} from '../../../shared'
+import {
+  signatureValidator,
+  checkSignature,
+  asyncMiddleware
+} from '../../middlewares'
+import { logger } from '../../helpers'
+
+const processActivity: { [ P in ActivityType ]: (activity: Activity) => Promise<any> } = {
+  Create: processCreateActivity,
+  Update: processUpdateActivity,
+  Flag: processFlagActivity
+}
+
+const inboxRouter = express.Router()
+
+inboxRouter.post('/',
+  signatureValidator,
+  asyncMiddleware(checkSignature),
+  // inboxValidator,
+  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 ]
+  }
+
+  await processActivities(activities)
+
+  res.status(204).end()
+}
+
+async function processActivities (activities: Activity[]) {
+  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)
+  }
+}