Plugin - Magento (Using Magento API)

****** Do not quote if you never develop a Magento plugin using Magento API ****** 1st ) Conditions The plugin should be develop for the Magento 1.9 and the developer will not have access for the server or even the magento admin. So the plugin should be develop to be installed as any magento plugin and the instructions to install and configure are part of this job 2ns) The Problem I have a server that is constantly update in Product information by my suppliers, but since they can see (by design) all the informations in my store I decide to duplicate my Magento Structure so the Product Update will be made at one store (not the production store) and the plugin that we will develop in this JOB will made the synchronization. 3rd) Plugin Function a. The plugin will be installed in the production website b. As a configuration we will need to enter the user / psw for a Magento API from the other Magento Installation where we will have the products being updates c. We will need to configure how often the plugin will be synchronizing the Products Informations d. Synchronization d.1 The plugin will need to update ALL Product information at the Production Website by the other magento installation using Magento API d.2 If there is a new product the plugin will add this product at the production web site d.3 For adding products we should be able to see all adds at the Magento Admin d.4 Also we need to have a list (in the admin) of all updates, in other words if a specific SKU has a price update we should see that in the admin, or if the product was disable ... In other words any change should be put in a log database.