1 files changed, 32 insertions, 0 deletions

diff --git a/server/lib/activitypub/process-follow.ts b/server/lib/activitypub/process-follow.ts
new file mode 100644
index 000000000..a04fc7994
--- /dev/null
+++ b/server/lib/activitypub/process-follow.ts
@@ -0,0 +1,32 @@
+import { ActivityFollow } from '../../../shared/models/activitypub/activity'
+import { getOrCreateAccount } from '../../helpers'
+import { database as db } from '../../initializers'
+import { AccountInstance } from '../../models/account/account-interface'
+
+async function processFollowActivity (activity: ActivityFollow) {
+  const activityObject = activity.object
+  const account = await getOrCreateAccount(activity.actor)
+
+  return processFollow(account, activityObject)
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  processFollowActivity
+}
+
+// ---------------------------------------------------------------------------
+
+async function processFollow (account: AccountInstance, targetAccountURL: string) {
+  const targetAccount = await db.Account.loadByUrl(targetAccountURL)
+
+  if (targetAccount === undefined) throw new Error('Unknown account')
+  if (targetAccount.isOwned() === false) throw new Error('This is not a local account.')
+
+  return db.AccountFollow.create({
+    accountId: account.id,
+    targetAccountId: targetAccount.id,
+    state: 'accepted'
+  })
+}