Class: Edi::Walmart::PriceMessageProcessor

Inherits:
BaseEdiService show all
Defined in:
app/services/edi/walmart/price_message_processor.rb

Constant Summary collapse

WALMART_MARKUP_FROM_AMZ = 
0.05
WALMART_TO_AMAZON_CATALOG = 
{
  CatalogConstants::WALMART_SELLER_USA => CatalogConstants::AMAZON_SC_US_CATALOG_ID,
  CatalogConstants::WALMART_SELLER_CANADA => CatalogConstants::AMAZON_SC_CA_CATALOG_ID
}.freeze

Constants included from AddressAbbreviator

AddressAbbreviator::MAX_LENGTH

Instance Attribute Summary

Attributes inherited from BaseEdiService

#orchestrator

Instance Method Summary collapse

Methods inherited from BaseEdiService

#duplicate_po_already_notified?, #initialize, #mark_duplicate_po_as_notified, #report_order_creation_issues, #safe_process_edi_communication_log

Methods included from AddressAbbreviator

#abbreviate_street, #collect_street_originals, #record_address_abbreviation_notes

Methods inherited from BaseService

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

Constructor Details

This class inherits a constructor from Edi::BaseEdiService

Instance Method Details

#append_catalog_item(messages, ci) ⇒ Object 



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# File 'app/services/edi/walmart/price_message_processor.rb', line 128

def append_catalog_item(messages, ci)
  # See API reference: https://developer.walmart.com/us-marketplace/reference/pricebulkuploads-1
  # And API Guide: https://developer.walmart.com/global-marketplace/docs/price-and-promotional-price-management-api-overview-new-1

  begin
    return unless ci.reported_vendor_sku.present?

    wm_price = walmart_price_for(ci)

    # NOTE: Must convert BigDecimal to Float for JSON serialization.
    # BigDecimal.to_json produces strings like "163.32" instead of numbers 163.32
    # which causes Walmart API to reject the feed with DATA_ERROR on price/msrp fields.
    message = {
      'Promo&Discount': {
        sku: ci.reported_vendor_sku,
        price: wm_price.to_f,
        msrp: ci.msrp.to_f
      }
    }
    messages << message
  rescue StandardError => e
    logger.error "Error processing catalog item #{ci.id} for partner #{orchestrator.partner}: #{e.message}"
    ErrorReporting.error(e, catalog_item_id: ci.id, partner_id: orchestrator.partner.id)
  end
  messages
end

#append_catalog_items(catalog_items) ⇒ Object 



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# File 'app/services/edi/walmart/price_message_processor.rb', line 117

def append_catalog_items(catalog_items)
  messages = []
  catalog_items.find_each do |ci|
    ErrorReporting.scoped(catalog_item_id: ci.id) do
      logger.info "Processing catalog item #{ci.id} for partner #{orchestrator.partner}"
      append_catalog_item(messages, ci)
    end
  end
  messages
end

#build_json(catalog_items: nil, states: nil) ⇒ Object 



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# File 'app/services/edi/walmart/price_message_processor.rb', line 62

def build_json(catalog_items: nil, states: nil)
  # see: https://github.com/amzn/selling-partner-api-models/blob/main/schemas/feeds/listings-feed-schema-v2.json
  catalog_items ||= load_catalog_items(states:)
  logger.info "#{catalog_items.size} items in price feed payload"

  # https://developer.walmart.com/us-marketplace/reference/priceandpromotionbulkuploads
  #
  # {
  #   "MPItemFeedHeader":{
  #     "businessUnit":"WALMART_US",
  #     "locale":"en",
  #     "version":"2.0.20240126-12_25_52-api"
  #   },
  #   "MPItem":[
  #     {
  #       "Promo&Discount":{
  #         "sku":"Qq9CG25SZjJJnjE",
  #         "price":96.5,
  #         "msrp":15,
  #         "promoid":"0a4aba2c-c62f-4be2-9738-cb62d2ccd4b2",
  #         "promotionInformation":{
  #           "promotionSettingAction":"Create",
  #           "promotionPlacement":"MAP Cart",
  #           "promotionType":"Clearance",
  #           "promotionPrice":90.5,
  #           "promotionPriceStartDateTime":"2024-05-03T07:00:46Z",
  #           "promotionPriceEndDateTime":"2024-10-19T20:52:46Z"
  #         }
  #       }
  #     },
  #     ...
  #   ]
  # }

  mp_items = append_catalog_items(catalog_items)
  
  # Validate that we have items to send - Walmart rejects feeds with empty MPItem arrays
  if mp_items.empty?
    logger.warn "[Walmart PriceProcessor] No items to include in price feed after filtering. Catalog items loaded: #{catalog_items.size}"
    raise "Cannot create price feed: All catalog items were filtered out (missing reported_vendor_sku or other issues). Loaded #{catalog_items.size} items but 0 items in final feed."
  end

  logger.info "[Walmart PriceProcessor] Building price feed with #{mp_items.size} items"

  feed_hash = {
    MPItemFeedHeader: {
      businessUnit: orchestrator.business_unit,
      locale: orchestrator.default_locale,
      version: '2.0.20240126-12_25_52-api'
    },
    MPItem: mp_items
  }
  feed_hash.to_json
end

#load_catalog_items(states: nil, use_delta_since_last_message: false) ⇒ Object 



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# File 'app/services/edi/walmart/price_message_processor.rb', line 52

def load_catalog_items(states: nil, use_delta_since_last_message: false)
  states ||= %w[active require_vendor_update pending_vendor_update pending_discontinue]
  catalog_items = orchestrator.customer.catalog
                              .catalog_items
                              .for_edi_feeds_by_states(states)
                              .with_item.eager_load(:store_item, :item)
  catalog_items = catalog_items.edi_delta_feeds_for_partner_inventory_advice(orchestrator.partner) if use_delta_since_last_message
  catalog_items.order(StoreItem[:qty_available])
end

#process(catalog_items: nil, states: nil, use_delta_since_last_message: false) ⇒ Object 



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# File 'app/services/edi/walmart/price_message_processor.rb', line 12

def process(catalog_items: nil, states: nil, use_delta_since_last_message: false)
  # see: https://developer.walmart.com/us-marketplace/docs/inventory-api-overview
  # see: https://developer.walmart.com/us-marketplace/reference/
  # see: https://www.postman.com/walmart-developer-portal/us-collection/request/j6u6dtg/bulk-item-inventory-update?tab=configurations
  logger.info "Creating price feed for partner #{orchestrator.partner}"
  catalog_items ||= load_catalog_items(states:, use_delta_since_last_message:)
  return :empty_set unless catalog_items.present?

  ecl = nil
  EdiCommunicationLog.transaction do
    data_json = build_json(catalog_items:, states:)
    
    # Validate the feed has items before creating ECL
    # Parse the JSON to check MPItem array is not empty
    feed_data = JSON.parse(data_json).with_indifferent_access
    mp_items_count = feed_data.dig(:MPItem)&.size || 0
    
    if mp_items_count.zero?
      logger.error "[Walmart PriceProcessor] Cannot create price feed: MPItem array is empty after processing #{catalog_items.size} catalog items"
      raise "Cannot create price feed: All catalog items were filtered out (missing reported_vendor_sku or other issues). Loaded #{catalog_items.size} items but 0 items in final feed."
    end
    
    logger.info "[Walmart PriceProcessor] Created price feed with #{mp_items_count} items"
    
    ecl = EdiCommunicationLog.create_outbound_file_from_data(
      data: data_json,
      data_type: 'json',
      file_extension: 'json',
      partner: orchestrator.partner,
      category: 'price_advice',
      resources: catalog_items,
      file_info: {
        items_count: mp_items_count,
        catalog_items_loaded: catalog_items.size
      }
    )
  end
  ecl
end

#walmart_price_for(ci) ⇒ Object

Price the Walmart item as Amazon Seller price + 5% markup so Amazon wins the Buy Box.
Each Walmart catalog maps to its same-country Amazon Seller catalog (US->US, CA->CA).
Falls back to the Walmart catalog item's own amount when no Amazon match exists.



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# File 'app/services/edi/walmart/price_message_processor.rb', line 158

def walmart_price_for(ci)
  amz_catalog_id = WALMART_TO_AMAZON_CATALOG[ci.catalog_id]
  if amz_catalog_id
    amz_ci = CatalogItem.where(catalog_id: amz_catalog_id).by_skus(ci.sku).first
    amz_price = amz_ci&.amount
  end

  if amz_price
    ((1.0 + WALMART_MARKUP_FROM_AMZ) * amz_price).round(2)
  else
    logger.warn "[Walmart PriceProcessor] No Amazon match for catalog item #{ci.id} (SKU #{ci.sku}), falling back to ci.amount"
    ci.amount
  end
end