Help setting up 1st order discount

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I need a automatic discount of 10% on select product collections for 1st time customers.

The discount would automatically show up at checkout BUT if a customer enters a discount code then the discount is showing double dipping. I don't want 2 promos to be possible. Either the preloaded on by the script or a manually entered code.

 

I have been trying to use the github shopify script builder but have ran into issues.

My code is below.

 

class Campaign
  def initialize(condition, *qualifiers)
    @condition = (condition.to_s + '?').to_sym
    @qualifiers = PostCartAmountQualifier ? [] : [] rescue qualifiers.compact
    @line_item_selector = qualifiers.last unless @line_item_selector
    qualifiers.compact.each do |qualifier|
      is_multi_select = qualifier.instance_variable_get(:@conditions).is_a?(Array)
      if is_multi_select
        qualifier.instance_variable_get(:@conditions).each do |nested_q|
          @post_amount_qualifier = nested_q if nested_q.is_a?(PostCartAmountQualifier)
          @qualifiers << qualifier
        end
      else
        @post_amount_qualifier = qualifier if qualifier.is_a?(PostCartAmountQualifier)
        @qualifiers << qualifier
      end
    end if @qualifiers.empty?
  end

  def qualifies?(cart)
    return true if @qualifiers.empty?
    @unmodified_line_items = cart.line_items.map do |item|
      new_item = item.dup
      new_item.instance_variables.each do |var|
        val = item.instance_variable_get(var)
        new_item.instance_variable_set(var, val.dup) if val.respond_to?(:dup)
      end
      new_item
    end if @post_amount_qualifier
    @qualifiers.send(@condition) do |qualifier|
      is_selector = false
      if qualifier.is_a?(Selector) || qualifier.instance_variable_get(:@conditions).any? { |q| q.is_a?(Selector) }
        is_selector = true
      end rescue nil
      if is_selector
        raise "Missing line item match type" if @li_match_type.nil?
        cart.line_items.send(@li_match_type) { |item| qualifier.match?(item) }
      else
        qualifier.match?(cart, @line_item_selector)
      end
    end
  end

  def run_with_hooks(cart)
    before_run(cart) if respond_to?(:before_run)
    run(cart)
    after_run(cart)
  end

  def after_run(cart)
    @discount.apply_final_discount if @discount && @discount.respond_to?(:apply_final_discount)
    revert_changes(cart) unless @post_amount_qualifier.nil? || @post_amount_qualifier.match?(cart)
  end

  def revert_changes(cart)
    cart.instance_variable_set(:@line_items, @unmodified_line_items)
  end
end

class ConditionalDiscount < Campaign
  def initialize(condition, customer_qualifier, cart_qualifier, line_item_selector, discount, max_discounts)
    super(condition, customer_qualifier, cart_qualifier)
    @line_item_selector = line_item_selector
    @discount = discount
    @items_to_discount = max_discounts == 0 ? nil : max_discounts
  end

  def run(cart)
    raise "Campaign requires a discount" unless @discount
    return unless qualifies?(cart)
    applicable_items = cart.line_items.select { |item| @line_item_selector.nil? || @line_item_selector.match?(item) }
    applicable_items = applicable_items.sort_by { |item| item.variant.price }
    applicable_items.each do |item|
      break if @items_to_discount == 0
      if (!@items_to_discount.nil? && item.quantity > @items_to_discount)
        discounted_items = item.split(take: @items_to_discount)
        @discount.apply(discounted_items)
        cart.line_items << discounted_items
        @items_to_discount = 0
      else
        @discount.apply(item)
        @items_to_discount -= item.quantity if !@items_to_discount.nil?
      end
    end
  end
end

class OrSelector
  def initialize(*conditions)
    @conditions = conditions.compact
  end

  def match?(item, selector = nil)
    @conditions.any? do |condition|
      if selector
        condition.match?(item, selector)
      else
        condition.match?(item)
      end
    end
  end
end

class Qualifier
  def partial_match(match_type, item_info, possible_matches)
    match_type = (match_type.to_s + '?').to_sym
    if item_info.kind_of?(Array)
      possible_matches.any? do |possibility|
        item_info.any? do |search|
          search.send(match_type, possibility)
        end
      end
    else
      possible_matches.any? do |possibility|
        item_info.send(match_type, possibility)
      end
    end
  end

  def compare_amounts(compare, comparison_type, compare_to)
    case comparison_type
      when :greater_than
        return compare > compare_to
      when :greater_than_or_equal
        return compare >= compare_to
      when :less_than
        return compare < compare_to
      when :less_than_or_equal
        return compare <= compare_to
      when :equal_to
        return compare == compare_to
      else
        raise "Invalid comparison type"
    end
  end
end

class CustomerOrderCountQualifier < Qualifier
  def initialize(comparison_type, amount)
    @comparison_type = comparison_type
    @amount = amount
  end

  def match?(cart, selector = nil)
    return false if cart.customer.nil?
    total = cart.customer.orders_count
    compare_amounts(total, @comparison_type, @amount)
  end
end

class AndSelector
  def initialize(*conditions)
    @conditions = conditions.compact
  end

  def match?(item, selector = nil)
    @conditions.all? do |condition|
      if selector
        condition.match?(item, selector)
      else
        condition.match?(item)
      end
    end
  end
end

class PostCartAmountQualifier < Qualifier
  def initialize(comparison_type, amount)
    @comparison_type = comparison_type
    @amount = Money.new(cents: amount * 100)
  end

  def match?(cart, selector = nil)
    total = cart.subtotal_price
    compare_amounts(total, @comparison_type, @amount)
  end
end

class ExcludeDiscountCodes < Qualifier
  def initialize(behaviour, message, match_type = :reject_except, discount_codes = [])
    @reject = behaviour == :apply_script
    @message = message == "" ? "Discount codes cannot be used with this offer" : message
    @match_type = match_type
    @discount_codes = discount_codes.map(&:downcase)
  end

  def match?(cart, selector = nil)
    return true if cart.discount_code.nil?
    return false if !@reject
    discount_code = cart.discount_code.code.downcase
    should_reject = true
    case @match_type
      when :reject_except
        should_reject = !@discount_codes.include?(discount_code)
      when :accept_except
        should_reject = @discount_codes.include?(discount_code)
    end
    if should_reject
      cart.discount_code.reject({message: @message})
    end
    return true
  end
end

class Selector
  def partial_match(match_type, item_info, possible_matches)
    match_type = (match_type.to_s + '?').to_sym
    if item_info.kind_of?(Array)
      possible_matches.any? do |possibility|
        item_info.any? do |search|
          search.send(match_type, possibility)
        end
      end
    else
      possible_matches.any? do |possibility|
        item_info.send(match_type, possibility)
      end
    end
  end
end

class ProductTypeSelector < Selector
  def initialize(match_type, product_types)
    @invert = match_type == :not_one
    @product_types = product_types.map(&:downcase)
  end

  def match?(line_item)
    @invert ^ @product_types.include?(line_item.variant.product.product_type.downcase)
  end
end

class PercentageDiscount
  def initialize(percent, message)
    @discount = (100 - percent) / 100.0
    @message = message
  end

  def apply(line_item)
    line_item.change_line_price(line_item.line_price * @discount, message: @message)
  end
end

CAMPAIGNS = [
  ConditionalDiscount.new(
    :all,
    OrSelector.new(
      nil,
      CustomerOrderCountQualifier.new(
        :less_than_or_equal,
        5
      ),
      nil
    ),
    AndSelector.new(
      PostCartAmountQualifier.new(
        :greater_than,
        1
      ),
      ExcludeDiscountCodes.new(
        :apply_discount,
        "",
        :reject_except,
        []
      ),
      nil
    ),
    ProductTypeSelector.new(
      :is_one,
      ["Screw-In Filters", "Motion Picture & Television Filter", "Accessories", "Shoulder Bag", "Lighting", "Apparel", "Monopod", "Photo Tripod", "Video Tripod", "Softbox", "Drone Filters", "Bracket", "Umbrella", "Diffuser Panel", "Dolly", "Shoulder Pad", "Wrap", "Pouch", "Guard Bag"]
    ),
    PercentageDiscount.new(
      10,
      "New Customer Discount 10% Off"
    ),
    0
  )
].freeze

CAMPAIGNS.each do |campaign|
  campaign.run_with_hooks(Input.cart)
end

Output.cart = Input.cart
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