QuickBooks Online API for Product and Sales Automation

We have a need to automate many of our Quickbooks Online functions. Specifically we need to: a. Add Product Photos (Photo URL available from our SQL products database) to existing Quickbooks products; b. Create a basic input form with Following Capabilities: i. Field where a customer address can be pasted, parsed automatically into customer name, street address, city, state, zip 1. Additional Fields: a. Customer Type, e.g., Houzz, eBay, etc b. Address Type, i.e., Commercial/Residential 2. Allow user to make corrections to address parse as needed 3. Press button, add Customer to Quickbooks if customer does not already exist ii. Post Sample Product to Quickbooks Online, from form fields including: a. Mfg Part Number b. Title c. H, W, D d. Weight/Shipping Weight e. Materials f. AvgCost, (PurchaseCost if Avg Cost is Null/blank) g. Sales Price h. FreightOnly 2. Press button, add to products to Quickbooks if product does not already exist, including picture of item from form URL iii. Using Customer/Product Information: 1. Create Invoice in Quickbooks 2. Record Payment in Quickbooks, using Payment Method (drop-down) selected by user 3. Create Purchase Order and Send to Vendor via Email 4. Print Packing Slip This must be done using the Quickbooks Online API. 2) You must use asp.net web API to implement it. Here is the reference: [login to view URL] 3) You must provide a API document using swagger. [login to view URL] 4) You must write a step by step document of installing the web API and swagger in the IIS