openfoodnetwork/app/forms/enterprise_fees_bulk_update.rb

# frozen_string_literal: true

class EnterpriseFeesBulkUpdate
  include ActiveModel::Model

  attr_reader :errors

  validate :check_enterprise_fee_input
  validate :check_calculators_compatibility_with_taxes

  def initialize(params)
    @errors = ActiveModel::Errors.new self
    @params = params
  end

  def save
    return false unless valid?

    @enterprise_fee_set = Sets::EnterpriseFeeSet.new(enterprise_fee_bulk_params)
    unless @enterprise_fee_set.save
      @enterprise_fee_set.errors.each do |error|
        @errors.add(error.attribute, error.type)
      end
      return false
    end

    true
  end

  private

  def check_enterprise_fee_input
    enterprise_fee_bulk_params['collection_attributes'].each_value do |fee_row|
      enterprise_fees = fee_row['calculator_attributes']&.slice(
        :preferred_flat_percent, :preferred_amount,
        :preferred_first_item, :preferred_additional_item,
        :preferred_minimal_amount, :preferred_normal_amount,
        :preferred_discount_amount, :preferred_per_unit
      )

      next unless enterprise_fees

      enterprise_fees.each_value do |enterprise_amount|
        unless enterprise_amount.nil? || Float(enterprise_amount, exception: false)
          @errors.add(:base, I18n.t(:calculator_preferred_value_error))
        end
      end
    end
  end

  def check_calculators_compatibility_with_taxes
    enterprise_fee_bulk_params['collection_attributes'].each_value do |enterprise_fee|
      next unless enterprise_fee['inherits_tax_category'] == "true"
      next unless EnterpriseFee::PER_ORDER_CALCULATORS.include?(enterprise_fee['calculator_type'])

      @errors.add(
        :base,
        I18n.t(
          'activerecord.errors.models.enterprise_fee.inherit_tax_requires_per_item_calculator'
        )
      )
    end
  end

  def enterprise_fee_bulk_params
    @params.require(:sets_enterprise_fee_set).permit(
      collection_attributes: [
        :id, :enterprise_id, :fee_type, :name, :tax_category_id,
        :inherits_tax_category, :calculator_type,
        { calculator_attributes: PermittedAttributes::Calculator.attributes }
      ]
    )
  end
end