php facebook marketplace message api

##Project summary: We need a few functions to collect and send facebook messages with the most recent version of the facebook marketplace message api. We want multiple employees to be able to interact with the messages from one particular facebook accont's marketplace messages. There is no GUI. Your code will be implemented elsewhere. ##version requirements: php 5.3 procedural style programming **NO frameworks** ##test enviroment: You must have your own test environment. ##mysql structure: table 1 name: table facebook_messages columns: id insertdate direction (inbound message or outbound message) and all other relevant fields returned by the API to retrieve messages table 2 name: i am unsure if a second table is needed, but you may design it, if its required and appropriate ##Script #1: This one will run from a crontab and populate the facebook_messages table with the results of an API call to retrieve all inbound messages Make this script insert a new row into the facebook_messages table when there are new records. If the api returns an error message, trigger an email is sent to me. This must be a script that requires NO user interaction to verify tokens, or api keys. ##Script #2: A php function to send new messages outbound This function should make a 1 or more simple curl calls The input on this function should include: 1- some sort of identifier to identify who we are messaging 2- the message content 3- attachments - jpg files or xls files Make this script insert a new row into the facebook_messages table when there are new records /w a direction of "outbound" and the return status (pass/fail) from the api call If the api returns an error message, trigger an email is sent to me. This must be a script that requires NO user interaction to verify tokens, or api keys. ##Script #3: This should be php script that will act as a webhook for when new messages come in. This should insert them in a similar fashion as script #1. If the api returns an error message, trigger an email is sent to me. This must be a script that requires NO user interaction to verify tokens, or api keys. ##Script #4: This should be a php script that handles authentication and renewal of tokens, if necessary. If the api returns an error message, trigger an email is sent to me. If this script requires periodic user interaction, that is fine. If this script can be made to work automatically without user interaction, that would be better, and we will run this on a crontab.