ministryofjustice/Claim-for-Crown-Court-Defence

module Claim
  class LitigatorClaimValidator < Claim::BaseClaimValidator
    include Claim::LitigatorCommonValidations

    def self.fields_for_steps
      {
        case_details: %i[
          case_type_id
          court_id
          case_number
          case_transferred_from_another_court
          transfer_court_id
          transfer_case_number
          case_concluded_at
          main_hearing_date
        ],
        defendants: [],
        offence_details: %i[offence],
        graduated_fees: %i[actual_trial_length total],
        miscellaneous_fees: %i[defendant_uplifts],
        travel_expenses: %i[travel_expense_additional_information],
        supporting_evidence: []
      }
    end

    def validate_defendant_uplifts
      return if @record.from_api?
      return if defendant_uplifts.all?(&:blank?)
      no_of_defendants = @record.defendants.count { |defendant| !defendant.marked_for_destruction? }
      add_error(:base, 'lgfs_defendant_uplifts_mismatch') if defendant_uplifts_greater_than?(no_of_defendants)
    end

    # we add one because Defendant uplift fees are for "additional" defendants
    def defendant_uplifts_greater_than?(no_of_defendants)
      defendant_uplifts.size + 1 > no_of_defendants
    end

    def defendant_uplifts
      @record.misc_fees.select do |fee|
        !fee.marked_for_destruction? &&
          fee&.defendant_uplift?
      end
    end
  end
end