Add affiliate tracking pixel in nopcommerce Checkout Complete

I need a pixel to be placed on the checkout page of the nopcommerce 3.0. It needs some code to be implemented in the checkout controller and a few paramaters to be passed through the model. Tracking > Tracking Codes and Tags The tracking codes are given below. This needs to be implemented on the thank you page. A Product Tracking Code consists of one “Sales Order Tag” and one or more “Product Detail Tags” as described below. This code allows you to specify the individual products within the sale or basket, so that commission calculations and reporting can be product specific. Sales Order Tag The Sales Order Tag must be output exactly once per sale. The tag must be output as a single line and look like: Product Detail Tags: The Product Detail Tag must be output once for each different product included in the sale. The tag must be output as a single line and look like: The tag above is unique to you as it includes your dgmPro Advertiser ID as well as the following mandatory parameters, highlighted in red above: Param Name Description Instructions “o” Order ID Uniquely identifies each individual sale. Allows sales in dgmPro to be verified against sales in your sales systems. Replace the [ORDERID] with your unique reference for the sale that has just been completed. This value must be the value used in the associated Sales Order Tag and will be the same for each Product Detail Tag associated with the sale. Validation: • must be unique for this sale as it is used by dgm to ensure that each sale is only processed once • may include characters ‘0’ to ‘9’, ‘A’ to ‘Z’, ‘a’ to ‘z’, ‘-‘, ‘.’, and ‘_’ • Maximum 50 characters “g” Item Code Identifies the specific product that has been sold Use SKU as previously – category id “s” Value The price for a single unit of this product identified by the SKU Code Replace the [VALUE] with the sale price excluding VAT for a single unit of this product in this sale. Validation: • must be a positive number to 2 decimal places • must not include any currency symbols or spaces • may only be zero if you are running a CPA campaign “q” Quantity The number of units of this product purchased in this sale Replace the [QUANTITY] with the number of units of this product purchased in this sale Validation: • must be a positive number with no decimals • must not be zero All other parts of the tag do not change and must be output exactly as they are listed above. SKUCODE jewellery apparel watchesandsunglasses fashionbags Perfumes