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131 lines
3.1 KiB
131 lines
3.1 KiB
# frozen_string_literal: true
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class ActivityPub::Activity::Undo < ActivityPub::Activity
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def perform
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case @object['type']
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when 'Announce'
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undo_announce
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when 'Accept'
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undo_accept
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when 'Follow'
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undo_follow
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when 'Like'
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undo_like
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when 'Block'
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undo_block
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when nil
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handle_reference
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end
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end
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private
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def handle_reference
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# Some implementations do not inline the object, and as we don't have a
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# global index, we have to guess what object it is.
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return if object_uri.nil?
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try_undo_announce || try_undo_accept || try_undo_follow || try_undo_like || try_undo_block || delete_later!(object_uri)
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end
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def try_undo_announce
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status = Status.where.not(reblog_of_id: nil).find_by(uri: object_uri, account: @account)
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if status.present?
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RemoveStatusService.new.call(status)
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true
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else
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false
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end
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end
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def try_undo_accept
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# We can't currently handle `Undo Accept` as we don't record `Accept`'s uri
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false
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end
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def try_undo_follow
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follow = @account.follow_requests.find_by(uri: object_uri) || @account.active_relationships.find_by(uri: object_uri)
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if follow.present?
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follow.destroy
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true
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else
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false
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end
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end
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def try_undo_like
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# There is an index on accounts, but an account may have *many* favs, so this may be too costly
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false
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end
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def try_undo_block
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block = @account.block_relationships.find_by(uri: object_uri)
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if block.present?
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UnblockService.new.call(@account, block.target_account)
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true
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else
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false
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end
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end
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def undo_announce
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return if object_uri.nil?
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status = Status.find_by(uri: object_uri, account: @account)
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status ||= Status.find_by(uri: @object['atomUri'], account: @account) if @object.is_a?(Hash) && @object['atomUri'].present?
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if status.nil?
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delete_later!(object_uri)
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else
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RemoveStatusService.new.call(status)
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end
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end
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def undo_accept
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::Follow.find_by(target_account: @account, uri: target_uri)&.revoke_request!
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end
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def undo_follow
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target_account = account_from_uri(target_uri)
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return if target_account.nil? || !target_account.local?
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if @account.following?(target_account)
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@account.unfollow!(target_account)
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elsif @account.requested?(target_account)
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FollowRequest.find_by(account: @account, target_account: target_account)&.destroy
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else
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delete_later!(object_uri)
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end
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end
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def undo_like
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status = status_from_uri(target_uri)
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return if status.nil? || !status.account.local?
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if @account.favourited?(status)
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favourite = status.favourites.where(account: @account).first
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favourite&.destroy
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else
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delete_later!(object_uri)
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end
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end
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def undo_block
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target_account = account_from_uri(target_uri)
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return if target_account.nil? || !target_account.local?
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if @account.blocking?(target_account)
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UnblockService.new.call(@account, target_account)
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else
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delete_later!(object_uri)
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end
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end
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def target_uri
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@target_uri ||= value_or_id(@object['object'])
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end
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end
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