Class: Coupon::PromoItemSync

Inherits:
BaseService show all
Defined in:
app/services/coupon/promo_item_sync.rb

Overview

Service object: promo item sync.

Defined Under Namespace

Classes: InvalidCouponType, MissingCatalogItems, PriceCalculator

Constant Summary collapse

VALID_COUPON_TYPES =

Recognised valid coupon types.

['%', '%V', '%M', '$'].freeze

Instance Attribute Summary

Attributes inherited from BaseService

#options

Instance Method Summary collapse

Methods inherited from BaseService

#initialize, #log_debug, #log_error, #log_info, #log_warning, #logger, #tagged_logger

Constructor Details

This class inherits a constructor from BaseService

Instance Method Details

#apply_coupon_to_catalog_items(coupon) ⇒ Object 



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# File 'app/services/coupon/promo_item_sync.rb', line 96

def apply_coupon_to_catalog_items(coupon)
  # Real-time ltree queries - no cache refresh needed
  current_catalog_items = coupon.all_applicable_catalog_items
  current_catalog_item_ids = current_catalog_items.ids

  # Find items that were previously linked but are no longer applicable
  previously_linked_items = CatalogItem.where('coupon_id = ? OR new_coupon_id = ?', coupon.id, coupon.id)
  items_to_unlink = previously_linked_items.where.not(id: current_catalog_item_ids)

  results = current_catalog_items.filter_map do |catalog_item|
    changes = determine_changes_for_catalog_item(catalog_item, coupon)
    update_catalog_item(catalog_item, changes)
  end

  # Clear promotions for items no longer applicable
  items_to_unlink.each do |catalog_item|
    changes = clear_promotion_for_catalog_item(catalog_item, coupon)
    results << update_catalog_item(catalog_item, changes)
  end

  coupon.update(promo_tracking: false) if current_catalog_items.blank?

  results.compact
end

#cleanup_orphaned_sales_promotions ⇒ Object 



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# File 'app/services/coupon/promo_item_sync.rb', line 176

def cleanup_orphaned_sales_promotions
  results = []

  CatalogItem.where(coupon_id: nil)
             .where.not(sale_price: nil)
             .find_each do |catalog_item|
    catalog_item.update(sale_price: nil)
    results << build_cleanup_result(catalog_item, :sale_price)
  end

  CatalogItem.where(new_coupon_id: nil)
             .where.not(new_sale_price: nil)
             .find_each do |catalog_item|
    catalog_item.update(new_sale_price: nil)
    results << build_cleanup_result(catalog_item, :new_sale_price)
  end

  results
end

#cleanup_removed_catalog_items(coupon, current_catalog_item_ids) ⇒ Object 



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# File 'app/services/coupon/promo_item_sync.rb', line 166

def cleanup_removed_catalog_items(coupon, current_catalog_item_ids)
  CatalogItem.where(coupon_id: coupon.id)
             .where.not(id: current_catalog_item_ids)
             .update_all(coupon_id: nil, sale_price: nil)

  CatalogItem.where(new_coupon_id: coupon.id)
             .where.not(id: current_catalog_item_ids)
             .update_all(new_coupon_id: nil, new_sale_price: nil)
end

#determine_changes_for_catalog_item(catalog_item, coupon) ⇒ Object 



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# File 'app/services/coupon/promo_item_sync.rb', line 121

def determine_changes_for_catalog_item(catalog_item, coupon)
  changes = {}
  should_recalculate = coupon.calculation_type_goods != 'MX'

  case coupon.status
  when :active
    if catalog_item.new_coupon_id == coupon.id
      changes = {
        coupon_id: coupon.id,
        new_coupon_id: nil,
        sale_price: if should_recalculate
                      PriceCalculator.new(catalog_item, coupon).calculate_sale_price
                    else
                      catalog_item.new_sale_price
                    end,
        new_sale_price: nil
      }
    elsif catalog_item.coupon_id != coupon.id || should_recalculate
      changes[:coupon_id] = coupon.id
      changes[:sale_price] = PriceCalculator.new(catalog_item, coupon).calculate_sale_price
    end
  when :not_yet_in_effect
    if catalog_item.coupon_id == coupon.id
      new_sale_price = if should_recalculate
                         PriceCalculator.new(catalog_item, coupon).calculate_sale_price
                       else
                         catalog_item.sale_price
                       end
      changes = {
        coupon_id: nil,
        new_coupon_id: coupon.id,
        sale_price: nil,
        new_sale_price: new_sale_price
      }
    elsif catalog_item.new_coupon_id != coupon.id || should_recalculate
      changes[:new_coupon_id] = coupon.id
      changes[:new_sale_price] = PriceCalculator.new(catalog_item, coupon).calculate_sale_price
    end
  else
    changes = clear_promotion_for_catalog_item(catalog_item, coupon)
  end

  changes
end

#process(coupons = nil, trial_run: false, skip_no_changes: true) ⇒ Object 



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# File 'app/services/coupon/promo_item_sync.rb', line 63

def process(coupons = nil, trial_run: false, skip_no_changes: true)
  res = []
  CatalogItem.transaction do
    # First, clean up any stale references to expired coupons
    cleanup_expired_coupon_references

    coupons = fetch_relevant_coupons(coupons)
    logger.info "Processing #{coupons.size} coupons and synchronizing promotions"

    res = coupons.order(:expiration_date, :effective_date).map do |coupon|
      process_coupon(coupon)
    end

    res += cleanup_orphaned_sales_promotions
    res = res.reject { |r| r[:status] == :no_changes } if skip_no_changes
    raise ActiveRecord::Rollback if trial_run
  end
  res
end

#process_coupon(coupon) ⇒ Object 



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# File 'app/services/coupon/promo_item_sync.rb', line 83

def process_coupon(coupon)
  return invalid_coupon_result(coupon) unless valid_coupon?(coupon) && coupon.valid?

  result = apply_coupon_to_catalog_items(coupon)
  {
    coupon_id: coupon.id,
    coupon_code: coupon.code,
    status: result.present? ? :changes_applied : :no_changes,
    result: result,
    message: coupon.saved_changes.present? ? "Coupon updated: #{coupon.saved_changes.inspect}" : nil
  }
end