Amazon Pay SDK for golang

• Golang SDK for Amazon pay
• Original Author: here

Changes:

• Client constructor takes the struct for input
• Since amazon has changed the generation of signature in v2 it's compatible here

Why new SDK?

• Since the repository of original author hasn't been changed since 3 years so I decided to create one

Flow of the amazon pay:

• Client inject the js script provided by the amazon
• Client will generate a signature by providing the the payload to your server
• Client gets the amazon button on clicking the button client redirects to the amazon site after adding card and shipping detail
  • on successful:
    • It will be redirected to the CheckoutReviewReturnURL
  • on cancel:
    • It will be redirected to the same page
• Client will use the session ID generated by the amazon sessionID will be appended in the CheckoutReviewReturnURL to get the detail about the session
  • If there is missing value for successful payment you will get in the constraints property of the result of session detail
  • In case there is missing client needs to update the fields
• Client will get the amazon checkout url in:
  • WebCheckoutDetails -> AmazonPayRedirectURL
  • Navigate to the AmazonPayRedirectURL and complete the process
  • ON PAYMENT SUCCESS: redirect to CheckoutResultReturnURL
  • ON PAYMENT CANCEL: redirect to CheckoutCancelUrl

USE SDK:

• Create a client of amazonpay
• Sign the payload using GenerateButtonSignature method
• Get the session detail using GetCheckoutSession method
• Update the payload using UpdateCheckoutSession method
• Complete the checkout using CompleteCheckoutSession method