Add context on activitypub responses

[github/Chocobozzz/PeerTube.git] / server / lib / activitypub / process / process-undo.ts

diff --git a/server/lib/activitypub/process/process-undo.ts b/server/lib/activitypub/process/process-undo.ts
index 5d09423e1046202a51e87268cc2c1de8f584a7b3..5a770bb972948d6e94ec55adca670f0c6eac0020 100644 (file)
--- a/server/lib/activitypub/process/process-undo.ts
+++ b/server/lib/activitypub/process/process-undo.ts
@@ -1,20 +1,24 @@
-import { ActivityUndo } from '../../../../shared/models/activitypub/activity'
+import { ActivityFollow, ActivityLike, ActivityUndo } from '../../../../shared/models/activitypub'
+import { DislikeObject } from '../../../../shared/models/activitypub/objects'
+import { retryTransactionWrapper } from '../../../helpers/database-utils'
 import { logger } from '../../../helpers/logger'
-import { database as db } from '../../../initializers'
+import { sequelizeTypescript } from '../../../initializers'
+import { AccountModel } from '../../../models/account/account'
+import { AccountVideoRateModel } from '../../../models/account/account-video-rate'
+import { ActorModel } from '../../../models/activitypub/actor'
+import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
+import { forwardActivity } from '../send/misc'
+import { getOrCreateAccountAndVideoAndChannel } from '../videos'
 
 async function processUndoActivity (activity: ActivityUndo) {
   const activityToUndo = activity.object
 
-  if (activityToUndo.type === 'Follow') {
-    const follower = await db.Account.loadByUrl(activity.actor)
-    const following = await db.Account.loadByUrl(activityToUndo.object)
-    const accountFollow = await db.AccountFollow.loadByAccountAndTarget(follower.id, following.id)
-
-    if (!accountFollow) throw new Error(`'Unknown account follow (${follower.id} -> ${following.id}.`)
-
-    await accountFollow.destroy()
-
-    return undefined
+  if (activityToUndo.type === 'Like') {
+    return processUndoLike(activity.actor, activity)
+  } else if (activityToUndo.type === 'Create' && activityToUndo.object.type === 'Dislike') {
+    return processUndoDislike(activity.actor, activity)
+  } else if (activityToUndo.type === 'Follow') {
+    return processUndoFollow(activity.actor, activityToUndo)
   }
 
   logger.warn('Unknown activity object type %s -> %s when undo activity.', activityToUndo.type, { activity: activity.id })
@@ -29,3 +33,90 @@ export {
 }
 
 // ---------------------------------------------------------------------------
+
+function processUndoLike (actorUrl: string, activity: ActivityUndo) {
+  const options = {
+    arguments: [ actorUrl, activity ],
+    errorMessage: 'Cannot undo like with many retries.'
+  }
+
+  return retryTransactionWrapper(undoLike, options)
+}
+
+async function undoLike (actorUrl: string, activity: ActivityUndo) {
+  const likeActivity = activity.object as ActivityLike
+
+  const { video } = await getOrCreateAccountAndVideoAndChannel(likeActivity.object)
+
+  return sequelizeTypescript.transaction(async t => {
+    const byAccount = await AccountModel.loadByUrl(actorUrl, t)
+    if (!byAccount) throw new Error('Unknown account ' + actorUrl)
+
+    const rate = await AccountVideoRateModel.load(byAccount.id, video.id, t)
+    if (!rate) throw new Error(`Unknown rate by account ${byAccount.id} for video ${video.id}.`)
+
+    await rate.destroy({ transaction: t })
+    await video.decrement('likes', { transaction: t })
+
+    if (video.isOwned()) {
+      // Don't resend the activity to the sender
+      const exceptions = [ byAccount.Actor ]
+      await forwardActivity(activity, t, exceptions)
+    }
+  })
+}
+
+function processUndoDislike (actorUrl: string, activity: ActivityUndo) {
+  const options = {
+    arguments: [ actorUrl, activity ],
+    errorMessage: 'Cannot undo dislike with many retries.'
+  }
+
+  return retryTransactionWrapper(undoDislike, options)
+}
+
+async function undoDislike (actorUrl: string, activity: ActivityUndo) {
+  const dislike = activity.object.object as DislikeObject
+
+  const { video } = await getOrCreateAccountAndVideoAndChannel(dislike.object)
+
+  return sequelizeTypescript.transaction(async t => {
+    const byAccount = await AccountModel.loadByUrl(actorUrl, t)
+    if (!byAccount) throw new Error('Unknown account ' + actorUrl)
+
+    const rate = await AccountVideoRateModel.load(byAccount.id, video.id, t)
+    if (!rate) throw new Error(`Unknown rate by account ${byAccount.id} for video ${video.id}.`)
+
+    await rate.destroy({ transaction: t })
+    await video.decrement('dislikes', { transaction: t })
+
+    if (video.isOwned()) {
+      // Don't resend the activity to the sender
+      const exceptions = [ byAccount.Actor ]
+      await forwardActivity(activity, t, exceptions)
+    }
+  })
+}
+
+function processUndoFollow (actorUrl: string, followActivity: ActivityFollow) {
+  const options = {
+    arguments: [ actorUrl, followActivity ],
+    errorMessage: 'Cannot undo follow with many retries.'
+  }
+
+  return retryTransactionWrapper(undoFollow, options)
+}
+
+function undoFollow (actorUrl: string, followActivity: ActivityFollow) {
+  return sequelizeTypescript.transaction(async t => {
+    const follower = await ActorModel.loadByUrl(actorUrl, t)
+    const following = await ActorModel.loadByUrl(followActivity.object, t)
+    const actorFollow = await ActorFollowModel.loadByActorAndTarget(follower.id, following.id, t)
+
+    if (!actorFollow) throw new Error(`'Unknown actor follow ${follower.id} -> ${following.id}.`)
+
+    await actorFollow.destroy({ transaction: t })
+
+    return undefined
+  })
+}