ministryofjustice/Claim-for-Crown-Court-Defence

module Claim
  class AdvocateHardshipClaimValidator < Claim::BaseClaimValidator
    include Claim::AdvocateClaimCommonValidations
    include Claim::DefendantUpliftValidations

    def self.fields_for_steps
      {
        case_details: %i[
          case_type_id
          case_stage_id
          court_id
          case_number
          case_transferred_from_another_court
          case_concluded_at
          transfer_court_id
          transfer_case_number
          trial_details
          retrial_details
          trial_cracked_at_third
          trial_fixed_notice_at
          trial_fixed_at
          trial_cracked_at
          supplier_number
          main_hearing_date
        ],
        defendants: [],
        offence_details: %i[offence],
        basic_fees: FEE_VALIDATION_FIELDS + %i[
          advocate_category defendant_uplifts_basic_fees
        ],
        miscellaneous_fees: %i[defendant_uplifts_misc_fees],
        travel_expenses: %i[travel_expense_additional_information],
        supporting_evidence: []
      }
    end

    FEE_VALIDATION_FIELDS = %i[total].freeze

    private

    # NOTE: case_type is delegated to case_stage for hardship claims
    # and should not exist directly on the claim via a foreign key
    def validate_case_type_id
      validate_absence(:case_type_id, :present)
    end

    def validate_case_stage_id
      validate_belongs_to_object_presence(:case_stage, :blank)
      validate_inclusion(:case_stage_id, @record.eligible_case_stages.pluck(:id), :inclusion)
    end

    def validate_offence
      validate_presence(:offence, :blank)
    end

    def validate_trial_details
      return unless @record&.case_type&.requires_trial_dates?

      validate_presence(:estimated_trial_length, :blank)
      validate_numericality(:estimated_trial_length, :hardship_invalid, 0, nil)
      validate_presence(:first_day_of_trial, :blank)
      validate_too_far_in_past(:first_day_of_trial)
      validate_not_in_future(:first_day_of_trial)
      validate_on_or_before(@record.trial_concluded_at, :first_day_of_trial, :check_other_date)
      validate_on_or_after(@record.first_day_of_trial, :trial_concluded_at, :check_other_date)
      validate_on_or_after(earliest_rep_order, :first_day_of_trial, :check_not_earlier_than_rep_order)
    end

    def validate_retrial_details
      return unless @record&.case_type&.requires_retrial_dates?

      # a retrial should have all trial details
      validate_not_in_future(:first_day_of_trial)
      validate_trial_start_and_end(:first_day_of_trial, :trial_concluded_at, inverse: false)
      validate_trial_start_and_end(:first_day_of_trial, :trial_concluded_at, inverse: true)
      validate_presence(:estimated_trial_length, :blank)
      validate_numericality(:estimated_trial_length, :invalid, 0, nil)
      validate_presence(:actual_trial_length, :blank)
      validate_numericality(:actual_trial_length, :invalid, 0, nil)
      validate_trial_actual_length_consistency

      # plus minimum retrial started
      validate_presence(:retrial_estimated_length, :blank)
      validate_numericality(:retrial_estimated_length, :invalid, 0, nil)
      validate_numericality(:retrial_actual_length, :invalid, 0, nil)
      validate_presence(:retrial_started_at, :blank)
      validate_too_far_in_past(:retrial_started_at)
      validate_not_in_future(:retrial_started_at)
      validate_on_or_after(@record.trial_concluded_at, :retrial_started_at, :check_not_earlier_than_trial_concluded)
      validate_on_or_after(@record.retrial_started_at, :retrial_concluded_at, :check_other_date)
      validate_on_or_before(@record.retrial_concluded_at, :retrial_started_at, :check_other_date)
      validate_on_or_after(earliest_rep_order, :retrial_started_at, :check_not_earlier_than_rep_order)
    end

    def validate_trial_actual_length_consistency
      return unless actual_length_consistent?(true,
                                              @record.actual_trial_length,
                                              @record.first_day_of_trial,
                                              @record.trial_concluded_at)
      add_error(:actual_trial_length, :too_long)
    end
  end
end