shopify_gateway_reorder_script.rb

# Set PayHere as first
DESIRED_GATEWAY_ORDER = [
  "PayHere Payment Gateway"
]

# ================================ Script Code (do not edit) ================================
# ================================================================
# ReorderGatewaysCampaign
#
# Reorders gateways into the entered order
# ================================================================
class ReorderGatewaysCampaign
  def initialize(desired_order)
    @desired_order = desired_order.map { |item| item.downcase.strip }
  end

  def run(cart, payment_gateways)
    payment_gateways.sort_by! { |payment_gateway| @desired_order.index(payment_gateway.name.downcase.strip) || Float::INFINITY }
  end
end

CAMPAIGNS = [
  ReorderGatewaysCampaign.new(DESIRED_GATEWAY_ORDER),
]

CAMPAIGNS.each do |campaign|
  campaign.run(Input.cart, Input.payment_gateways)
end

Output.payment_gateways = Input.payment_gateways