mastodon/app/lib/activitypub/activity/flag.rb

# frozen_string_literal: true

class ActivityPub::Activity::Flag < ActivityPub::Activity
  COMMENT_SIZE_LIMIT = 5000

  def perform
    return if skip_reports?

    target_accounts            = object_uris.filter_map { |uri| account_from_uri(uri) }
    target_statuses_by_account = object_uris.filter_map { |uri| status_from_uri(uri) }.group_by(&:account_id)

    target_accounts.each do |target_account|
      target_statuses     = target_statuses_by_account[target_account.id]
      replied_to_accounts = target_statuses.nil? ? [] : Account.local.where(id: target_statuses.filter_map(&:in_reply_to_account_id))

      next if target_account.suspended? || (!target_account.local? && replied_to_accounts.none?)

      ReportService.new.call(
        @account,
        target_account,
        status_ids: target_statuses.nil? ? [] : target_statuses.map(&:id),
        comment: report_comment,
        uri: report_uri
      )
    end
  end

  private

  def skip_reports?
    DomainBlock.reject_reports?(@account.domain)
  end

  def object_uris
    @object_uris ||= Array(@object.is_a?(Array) ? @object.map { |item| value_or_id(item) } : value_or_id(@object))
  end

  def report_uri
    @json['id'] unless @json['id'].nil? || non_matching_uri_hosts?(@account.uri, @json['id'])
  end

  def report_comment
    (@json['content'] || '')[0...COMMENT_SIZE_LIMIT]
  end
end