Class: SpreeCmCommissioner::VariantAvailability::NonPermanentStockQuery

Inherits:
Object
  • Object
show all
Defined in:
app/queries/spree_cm_commissioner/variant_availability/non_permanent_stock_query.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(variant:, except_line_item_id: nil) ⇒ NonPermanentStockQuery 



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# File 'app/queries/spree_cm_commissioner/variant_availability/non_permanent_stock_query.rb', line 6

def initialize(variant:, except_line_item_id: nil)
  @variant = variant
  @except_line_item_id = except_line_item_id
  @error_message = nil
end

Instance Attribute Details

#error_message ⇒ Object (readonly)

Returns the value of attribute error_message.



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# File 'app/queries/spree_cm_commissioner/variant_availability/non_permanent_stock_query.rb', line 4

def error_message
  @error_message
end

#except_line_item_id ⇒ Object (readonly)

Returns the value of attribute except_line_item_id.



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# File 'app/queries/spree_cm_commissioner/variant_availability/non_permanent_stock_query.rb', line 4

def except_line_item_id
  @except_line_item_id
end

#variant ⇒ Object (readonly)

Returns the value of attribute variant.



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# File 'app/queries/spree_cm_commissioner/variant_availability/non_permanent_stock_query.rb', line 4

def variant
  @variant
end

Instance Method Details

#available?(quantity) ⇒ Boolean 



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# File 'app/queries/spree_cm_commissioner/variant_availability/non_permanent_stock_query.rb', line 12

def available?(quantity)
  reserve_variants =
    Spree::LineItem
    .complete
    .select('(SUM(DISTINCT spree_stock_items.count_on_hand) - SUM(spree_line_items.quantity)) AS available_quantity')
    .joins(variant: :stock_items)
    .where(variant_id: variant.id)
    .where.not(id: except_line_item_id)
    .group(:variant_id)

  # there is a case when variant does not have any purchaces yet, it will return empty & always available true.
  # in this case, we check with stock items directly.

  available_quantity = if reserve_variants.any?
                         reserve_variants.sum(&:available_quantity)
                       else
                         variant.stock_items.sum(:count_on_hand)
                       end
  if available_quantity >= quantity
    true
  elsif available_quantity == 1
    @error_message = I18n.t('variant_availability.item_available_instock')
    false
  elsif available_quantity <= 0
    @error_message = I18n.t('variant_availability.items_out_of_stock')
    false
  else
    @error_message = I18n.t('variant_availability.items_available_instock', available_quantity: available_quantity)
    false
  end
end