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- # frozen_string_literal: true
- class ActivityPub::ProcessCollectionService < BaseService
- include JsonLdHelper
- def call(body, account, **options)
- @account = account
- @json = Oj.load(body, mode: :strict)
- @options = options
- return if !supported_context? || (different_actor? && verify_account!.nil?) || suspended_actor? || @account.local?
- case @json['type']
- when 'Collection', 'CollectionPage'
- process_items @json['items']
- when 'OrderedCollection', 'OrderedCollectionPage'
- process_items @json['orderedItems']
- else
- process_items [@json]
- end
- rescue Oj::ParseError
- nil
- end
- private
- def different_actor?
- @json['actor'].present? && value_or_id(@json['actor']) != @account.uri
- end
- def suspended_actor?
- @account.suspended? && !activity_allowed_while_suspended?
- end
- def activity_allowed_while_suspended?
- %w(Delete Reject Undo Update).include?(@json['type'])
- end
- def process_items(items)
- items.reverse_each.map { |item| process_item(item) }.compact
- end
- def supported_context?
- super(@json)
- end
- def process_item(item)
- activity = ActivityPub::Activity.factory(item, @account, **@options)
- activity&.perform
- end
- def verify_account!
- @options[:relayed_through_account] = @account
- @account = ActivityPub::LinkedDataSignature.new(@json).verify_account!
- rescue JSON::LD::JsonLdError => e
- Rails.logger.debug "Could not verify LD-Signature for #{value_or_id(@json['actor'])}: #{e.message}"
- nil
- end
- end
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