Shopify Script #4 - Discounts by Product Type and Customer Tag

script.rb

# Discounts by Product Type and Customer Tag

# Custom Message
CHECKOUT_MESSAGE = "Special discount"

# Customer tags
CUSTOMER_TAGS = ["Wholesale","B2B"]

# Discount rules
# PRODUCT CATEGORY => DISCOUNT VALUE ($)
# PRODUCT CATEGORIES SHOULD BE IN UPPERCASE (THIS IS IMPORTANT!)
DISCOUNT_RULES = {
  "BACKPACK"    => 10, 
  "T-SHIRT"     => 5, 
  "SHOES"       => 15
}


# === Do not change anything below ===

cart = Input.cart
customer = Input.cart.customer

product_types = DISCOUNT_RULES.keys;


# IF CUSTOMER EXISTS
if customer
  # AND CUSTOMER HAS REQUIRED TAGS
  if !(CUSTOMER_TAGS & customer.tags).empty?
    
      cart.line_items.each do |line_item|
      product = line_item.variant.product
      # Check the product type
      if product_types.collect{|el| el.downcase }.include?(product.product_type.downcase)
          product_type = product.product_type.upcase;
          # Apply discount
          line_discount = line_item.quantity * (Money.new(cents: 100) * DISCOUNT_RULES[product_type]) 
          line_item.change_line_price(line_item.line_price - line_discount, message: CHECKOUT_MESSAGE)
     end
  
    end
  end
end



Output.cart = Input.cart