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1 | import { ActivityFollow, ActivityLike, ActivityUndo } from '../../../../shared/models/activitypub/activity' | |
2 | import { DislikeObject } from '../../../../shared/models/activitypub/objects/dislike-object' | |
3 | import { retryTransactionWrapper } from '../../../helpers/database-utils' | |
4 | import { logger } from '../../../helpers/logger' | |
5 | import { database as db } from '../../../initializers' | |
6 | import { forwardActivity } from '../send/misc' | |
7 | ||
8 | async function processUndoActivity (activity: ActivityUndo) { | |
9 | const activityToUndo = activity.object | |
10 | ||
11 | if (activityToUndo.type === 'Like') { | |
12 | return processUndoLike(activity.actor, activity) | |
13 | } else if (activityToUndo.type === 'Create' && activityToUndo.object.type === 'Dislike') { | |
14 | return processUndoDislike(activity.actor, activity) | |
15 | } else if (activityToUndo.type === 'Follow') { | |
16 | return processUndoFollow(activity.actor, activityToUndo) | |
17 | } | |
18 | ||
19 | logger.warn('Unknown activity object type %s -> %s when undo activity.', activityToUndo.type, { activity: activity.id }) | |
20 | ||
21 | return undefined | |
22 | } | |
23 | ||
24 | // --------------------------------------------------------------------------- | |
25 | ||
26 | export { | |
27 | processUndoActivity | |
28 | } | |
29 | ||
30 | // --------------------------------------------------------------------------- | |
31 | ||
32 | function processUndoLike (actor: string, activity: ActivityUndo) { | |
33 | const options = { | |
34 | arguments: [ actor, activity ], | |
35 | errorMessage: 'Cannot undo like with many retries.' | |
36 | } | |
37 | ||
38 | return retryTransactionWrapper(undoLike, options) | |
39 | } | |
40 | ||
41 | function undoLike (actor: string, activity: ActivityUndo) { | |
42 | const likeActivity = activity.object as ActivityLike | |
43 | ||
44 | return db.sequelize.transaction(async t => { | |
45 | const byAccount = await db.Account.loadByUrl(actor, t) | |
46 | if (!byAccount) throw new Error('Unknown account ' + actor) | |
47 | ||
48 | const video = await db.Video.loadByUrlAndPopulateAccount(likeActivity.object, t) | |
49 | if (!video) throw new Error('Unknown video ' + likeActivity.actor) | |
50 | ||
51 | const rate = await db.AccountVideoRate.load(byAccount.id, video.id, t) | |
52 | if (!rate) throw new Error(`Unknown rate by account ${byAccount.id} for video ${video.id}.`) | |
53 | ||
54 | await rate.destroy({ transaction: t }) | |
55 | await video.decrement('likes', { transaction: t }) | |
56 | ||
57 | if (video.isOwned()) { | |
58 | // Don't resend the activity to the sender | |
59 | const exceptions = [ byAccount ] | |
60 | await forwardActivity(activity, t, exceptions) | |
61 | } | |
62 | }) | |
63 | } | |
64 | ||
65 | function processUndoDislike (actor: string, activity: ActivityUndo) { | |
66 | const options = { | |
67 | arguments: [ actor, activity ], | |
68 | errorMessage: 'Cannot undo dislike with many retries.' | |
69 | } | |
70 | ||
71 | return retryTransactionWrapper(undoDislike, options) | |
72 | } | |
73 | ||
74 | function undoDislike (actor: string, activity: ActivityUndo) { | |
75 | const dislike = activity.object.object as DislikeObject | |
76 | ||
77 | return db.sequelize.transaction(async t => { | |
78 | const byAccount = await db.Account.loadByUrl(actor, t) | |
79 | if (!byAccount) throw new Error('Unknown account ' + actor) | |
80 | ||
81 | const video = await db.Video.loadByUrlAndPopulateAccount(dislike.object, t) | |
82 | if (!video) throw new Error('Unknown video ' + dislike.actor) | |
83 | ||
84 | const rate = await db.AccountVideoRate.load(byAccount.id, video.id, t) | |
85 | if (!rate) throw new Error(`Unknown rate by account ${byAccount.id} for video ${video.id}.`) | |
86 | ||
87 | await rate.destroy({ transaction: t }) | |
88 | await video.decrement('dislikes', { transaction: t }) | |
89 | ||
90 | if (video.isOwned()) { | |
91 | // Don't resend the activity to the sender | |
92 | const exceptions = [ byAccount ] | |
93 | await forwardActivity(activity, t, exceptions) | |
94 | } | |
95 | }) | |
96 | } | |
97 | ||
98 | function processUndoFollow (actor: string, followActivity: ActivityFollow) { | |
99 | const options = { | |
100 | arguments: [ actor, followActivity ], | |
101 | errorMessage: 'Cannot undo follow with many retries.' | |
102 | } | |
103 | ||
104 | return retryTransactionWrapper(undoFollow, options) | |
105 | } | |
106 | ||
107 | function undoFollow (actor: string, followActivity: ActivityFollow) { | |
108 | return db.sequelize.transaction(async t => { | |
109 | const follower = await db.Account.loadByUrl(actor, t) | |
110 | const following = await db.Account.loadByUrl(followActivity.object, t) | |
111 | const accountFollow = await db.AccountFollow.loadByAccountAndTarget(follower.id, following.id, t) | |
112 | ||
113 | if (!accountFollow) throw new Error(`'Unknown account follow ${follower.id} -> ${following.id}.`) | |
114 | ||
115 | await accountFollow.destroy({ transaction: t }) | |
116 | ||
117 | return undefined | |
118 | }) | |
119 | } |