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import { ActivityFollow, ActivityLike, ActivityUndo } from '../../../../shared/models/activitypub/activity'
import { DislikeObject } from '../../../../shared/models/activitypub/objects/dislike-object'
import { retryTransactionWrapper } from '../../../helpers/database-utils'
import { logger } from '../../../helpers/logger'
import { database as db } from '../../../initializers'
import { forwardActivity } from '../send/misc'
async function processUndoActivity (activity: ActivityUndo) {
const activityToUndo = activity.object
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 })
return undefined
}
// ---------------------------------------------------------------------------
export {
processUndoActivity
}
// ---------------------------------------------------------------------------
function processUndoLike (actor: string, activity: ActivityUndo) {
const options = {
arguments: [ actor, activity ],
errorMessage: 'Cannot undo like with many retries.'
}
return retryTransactionWrapper(undoLike, options)
}
function undoLike (actor: string, activity: ActivityUndo) {
const likeActivity = activity.object as ActivityLike
return db.sequelize.transaction(async t => {
const byAccount = await db.Account.loadByUrl(actor, t)
if (!byAccount) throw new Error('Unknown account ' + actor)
const video = await db.Video.loadByUrlAndPopulateAccount(likeActivity.object, t)
if (!video) throw new Error('Unknown video ' + likeActivity.actor)
const rate = await db.AccountVideoRate.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 ]
await forwardActivity(activity, t, exceptions)
}
})
}
function processUndoDislike (actor: string, activity: ActivityUndo) {
const options = {
arguments: [ actor, activity ],
errorMessage: 'Cannot undo dislike with many retries.'
}
return retryTransactionWrapper(undoDislike, options)
}
function undoDislike (actor: string, activity: ActivityUndo) {
const dislike = activity.object.object as DislikeObject
return db.sequelize.transaction(async t => {
const byAccount = await db.Account.loadByUrl(actor, t)
if (!byAccount) throw new Error('Unknown account ' + actor)
const video = await db.Video.loadByUrlAndPopulateAccount(dislike.object, t)
if (!video) throw new Error('Unknown video ' + dislike.actor)
const rate = await db.AccountVideoRate.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 ]
await forwardActivity(activity, t, exceptions)
}
})
}
function processUndoFollow (actor: string, followActivity: ActivityFollow) {
const options = {
arguments: [ actor, followActivity ],
errorMessage: 'Cannot undo follow with many retries.'
}
return retryTransactionWrapper(undoFollow, options)
}
function undoFollow (actor: string, followActivity: ActivityFollow) {
return db.sequelize.transaction(async t => {
const follower = await db.Account.loadByUrl(actor, t)
const following = await db.Account.loadByUrl(followActivity.object, t)
const accountFollow = await db.AccountFollow.loadByAccountAndTarget(follower.id, following.id, t)
if (!accountFollow) throw new Error(`'Unknown account follow ${follower.id} -> ${following.id}.`)
await accountFollow.destroy({ transaction: t })
return undefined
})
}
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