Drupal User Relations and Purchase Procedure

Implementation of a series of funtionality that permit us to estabilish a user relation and a customized puchased procedure. - Relation between vendor and buyer (User Relations: vendor) - Relation between buyer and vendor (User Relations: buyer) - personal calendar for the buyer and sellers (taking in account different time zones) - The relation must be setted after the buyer purchase and vendor acceptance - Status (online/offline/busy/idle) of the vendor must be showed - if status is “online” insert in the product puchase page the field “reserve now” - buyer and vendor can send between them private message with file exchange, the feature must be disable after a determinated time (only for the buyer) - buyer and vendor can be send between them istant message (chat) with file exchange, the feature must be disabled after a determinated time - buyer must leave a vote and feedback to the vendor after that he have purchased from a vendor - vendor must leave a vote and feedback to the buyer after that he purchase but the feedback it is hidden to the buyer, the feedbak must be showed only at the vendors with a relation with the buyer - A popup message (ajax?) must be showed at the vendor when a user buy something - Vendor must accept the order to complete the sell - A popup message (ajax?) must be showed at the buyer when the vendor accept - The buyer must select the purchasing in a personal calendar (buyer must see the time table of the vendor) of the vendor - Insert a new event in the buyer calendar with the purchase date time - After the purchasing the vendor results not disponible during the time reserved by the buyer - A link (or skype button) must be showed at the buyer after the purchasing and vendor acceptance - Customize with hook_alter_form the product form in ubercart