#!/usr/bin/php

<?php

	require_once __DIR__.'/../../include/php/const';

	$f_authlist;
	$f_accesslog;

	$last_card;
	$times;


	function mfrc522_setup(){

		/* [1] Open file descriptors on useful files
		=========================================================*/
		$f_authlist  = new SplFileObject(AUTH_LIST, 'r');
		$f_accesslog = new SplFileObject(ACCESS_LOG, 'a');

		/* [2] Parse @authlist to cache [action]=>[rfid1, rfid2, ..]
		=========================================================*/
		

		/* [3] Initialize global variables
		=========================================================*/
		$last_card = null;
		$times     = 0;

	}





	function mfrc522_loop(){

		/* [1] Wait for rfid card
		=========================================================*/
		while( ($code=syscall(SOURCE_DIR.'/lib/mfrc522/read')) === false );

		$code = strtoupper($code);

		slog("card '$code' read", 'mfrc522:read');

		$start_ts = microtime(true);

		
		/* [2] Check for user in auth list
		=========================================================*/
		


		/* [n] Wait for 0.5 s before reading again 
		=========================================================*/
		while( microtime(true)-$start_ts < 0.5 );
	}






	slog('daemon started (loop)', 'mfrc522:loop');

	while( true )
		mfrc522_loop();
?>