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 }) }