1 files changed, 39 insertions, 0 deletions

diff --git a/server/lib/activitypub/send/send-undo.ts b/server/lib/activitypub/send/send-undo.ts
new file mode 100644
index 000000000..39da824f3
--- /dev/null
+++ b/server/lib/activitypub/send/send-undo.ts
@@ -0,0 +1,39 @@
+import { Transaction } from 'sequelize'
+import { ActivityFollow, ActivityUndo } from '../../../../shared/models/activitypub/activity'
+import { AccountInstance } from '../../../models'
+import { AccountFollowInstance } from '../../../models/account/account-follow-interface'
+import { unicastTo } from './misc'
+import { getAccountFollowActivityPubUrl, getUndoActivityPubUrl } from '../../../helpers/activitypub'
+import { followActivityData } from './send-follow'
+
+async function sendUndoFollow (accountFollow: AccountFollowInstance, t: Transaction) {
+  const me = accountFollow.AccountFollower
+  const following = accountFollow.AccountFollowing
+
+  const followUrl = getAccountFollowActivityPubUrl(accountFollow)
+  const undoUrl = getUndoActivityPubUrl(followUrl)
+
+  const object = await followActivityData(followUrl, me, following)
+  const data = await undoActivityData(undoUrl, me, object)
+
+  return unicastTo(data, me, following.inboxUrl, t)
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  sendUndoFollow
+}
+
+// ---------------------------------------------------------------------------
+
+async function undoActivityData (url: string, byAccount: AccountInstance, object: ActivityFollow) {
+  const activity: ActivityUndo = {
+    type: 'Undo',
+    id: url,
+    actor: byAccount.url,
+    object
+  }
+
+  return activity
+}