Web automation script for Amazon site needed

We need a script that can help us to upload content to the amazon editor page. As far as I know, this will not possible using Amazon API, so need to make an automation script mimicking user behavior to upload. Flow: 1. User input the Amazon ASIN and text content (copywriting) and images to the bot 2. Bot go to amazon 3. Bot open the specific Amazon ASIN's editor page (example: [login to view URL]) 4. Bot upload all content from user input 5. End User Input: - Amazon ASIN - Text content (Product Name, Manufacturer, Brand, Key Product Features, Product Description) - Images Content (Main Image, Supporting Images) Requirement: - IMPORTANT: Hosted using Paas (Platform as a service) such as Heroku, Openshift, AWS Amazon, etc) - Web Based script - Fast but simple - Reliable (Bug free) - Password protect - Work in background - Show the status of log (which task is done, which task still in process) - log status can be another page or in the same page Additional Note: - We can accept either the text content input use upload .txt file method or filling field directly on the web page, just choose whichever simple - We can accept either use the image uploading input just submit image URL to bot (so user upload the image to cloud storage such as dropbox first), just choose whichever simple - Another possibility is using some sort like iframe technique which literally display the amazon's editor page and let user input the content directly on that page. The only requirement needed is do not let user click any link that can go to another page.