[Update] Implemented the whole mfrc522:loop script[Todo] Rename \lib\chip to \lib\global-state and create 'update' which updated the whole chips according to the STATE file

lib/mfrc522/source/loop.php

@@ -15,7 +15,7 @@
 	$states   = [];
 
 	$last_user = null;
-	$timeout   = 1;
+	$timeout   = 0;
 
 
 
@@ -67,6 +67,136 @@
 
 
 
+	/* PROCESS ACTIONS IF ACTION CAN BE PERFORMED BY USER (DEPENDING ON TIMEOUT/STATE)
+	*
+	* @user<array>							Current user information
+	*
+	* @return success<bool>						If success (action performed) | FALSE
+	*
+	*/
+	function act($user){
+
+		/* [1] Export global caches + variables
+		=========================================================*/
+		/* (1) Variables */
+		global $timeout;
+
+		/* (2) Caches */
+		global $actions, $states, $state;
+
+		/* (3) Log history file descriptor */
+		global $f_accesslog;
+
+
+		/* [2] Manage timeout
+		=========================================================*/
+		/* (1) If no action for this @timeout -> reset to 0 */
+		if( !isset($actions[$timeout]) || !is_array($actions[$timeout]) )
+			$timeout = 0;
+		
+		/* (2) fetch actions for the current @timeout */
+		$actionlist = $actions[$timeout];
+
+
+		/* [3] Manage permissions (action that can be performed)
+		=========================================================*/
+		/* (1) Will contain available @id_action-s granted for the user */
+		$grantedFor = [];
+
+		/* (2) Search an action the user can perform in the list */
+		foreach($actionlist as $id_action=>$acttion){
+
+			/* (3) If have permission -> add to list */
+			if( in_array($id_action, $user['can']) )
+				$grantedFor[] = $id_action;
+
+		}
+
+		/* (4) If no action found -> abort */
+		if( count($grantedFor) == 0 )
+			return false;
+
+
+		/* [4] Manage action depending on the actual STATE
+		=========================================================*/
+		/* (1) Will contain the first available action depending on STATE */
+		$toPerform = null;
+
+		/* (2) For each granted action, check the STATE */
+		foreach($grantedFor as $id_action){
+
+			$failed = false;
+
+			/* (3) Fetch action data */
+			$action = $actionlist[$id_action];
+
+			/* (4) Check if the state allows the action to be performed */
+			for( $c = 0 ; $c < count($state) || $c < strlen($action['prev']) ; $c++ ){
+				// {1} 'X' = any state -> so ignore //
+				if( $action['prev'][$c] == 'X' )
+					continue;
+
+				// {2} Other state : if not equal -> set as FAILED //
+				else if( $action['prev'][$c] != $state[$c] ){
+					$failed = true;
+					break;
+				}
+			}
+
+			/* (5) If not failed -> save action in @toPerform */
+			if( !$failed ){
+				$toPerform = $id_action;
+				break;
+			}
+
+		}
+
+		/* (6) If no action cant be performed -> abort */
+		if( is_null($toPerform) )
+			return false;
+
+		/* (7) Extract corresponding action */
+		$action = $grantedFor[$toPerform];
+
+
+		/* [5] Process the action on the STATE
+		=========================================================*/
+		/* (1) Update the state with the found action */
+		for( $c = 0 ; $c < count($state) || $c < strlen($action['next']) ; $c++ ){
+
+			// {1} If 'x' -> let the current state //
+			if( $action['next'][$c] == 'X' )
+				continue;
+
+			// {2} If other state -> update it //
+			else
+				$state[$c] = $action['next'][$c];
+
+		}
+
+
+		/* (2) Update the state file */
+		$written = @file_put_contents(STATE_CONF, implode('', $state));
+
+		/* (3) Manage error */
+		if( $written === false )
+			slog('cannot update STATE file', 'mfrc522:loop');
+		
+
+
+		/* [6] Log action
+		=========================================================*/
+		/* (1) Log action to default log file */
+		$f_accesslog->fwrite( json_encode([
+			time(),
+			$user['id'],
+			$toPerform
+		]).PHP_EOL );
+
+		/* (2) Return status */
+		return true;
+
+	}
 
 
 
@@ -122,10 +252,9 @@
 				$actions[$parsed[0]] = [];
 
 			/* (4) Add entry to cache */
-			$actions[$parsed[0]][] = [
+			$actions[$parsed[0]][$parsed[1]] = [
-				'id'   => $parsed[1],
 				'prev' => $parsed[2],
-				'next' => $parsed[3],
+				'next' => $parsed[3]
 			];
 
 		}
@@ -182,53 +311,89 @@
 
 		/* [1] Load global variables
 		=========================================================*/
+		/* (1) Persistent variabes */
 		global $last_user;
 		global $timeout;
 
+		/* (2) Caches */
+		global $actions, $states, $state;
+
+
+
 		/* [1] Wait for rfid card
 		=========================================================*/
-		while( ($code=syscall(SOURCE_DIR.'/lib/mfrc522/read')) === false );
+		/* (1) Read card */
+		$code = syscall(SOURCE_DIR.'/lib/mfrc522/read'));
 		
+		/* (2) If no card read -> reset @last_user / @timeout + abort */
+		if( $code === false ){
+
+			$last_user = null;
+			$timeout   = 0;
+			return false;
+
+		}
+
+
+		/* (3) If code -> format it */
 		$code = strtoupper($code);
 
 		slog("card '$code' read", 'mfrc522:read');
 
-		$start_ts = microtime(true);
 
 		
 		/* [2] Check for user in auth list
 		=========================================================*/
-		/* (0) CHECK FOR USER INFO IN AUTH LIST
+		/* (1) Check user for this code */
-		---------------------------------------------------------*/
 		$user = auth($code);
 
 
-		/* (1) UNKNOWN USER -> reset count
+		/* (2) If not found -> reset @last_user / @timeout + abort */
-		---------------------------------------------------------*/
 		if( is_null($user) ){
 			
 			$last_user = null;
-			$timeout   = 1;
+			$timeout   = 0;
+			return false;
+
+		}
 
 
-		/* (2) KNOWN USER -> Manage timeout
+		/* [3] Manage @timeout incrementation + @last_user
-		---------------------------------------------------------*/
+		=========================================================*/
-		}else{
-
 		/* (1) If same as last -> increment @timeout */
 		if( $last_user == $user['id'] )
 			$timeout++;
 
+		/* (2) If different -> reset @timeout to 0 */
+		else
+			$timeout = 0;
 
 
-		}
+		/* [4] Manage action
-		
-
-
-
-		/* [n] Wait for 0.5 s before reading again 
 		=========================================================*/
-		while( microtime(true)-$start_ts < 0.5 );
+		/* (1) Try to process action */
+		$performed = act($user);
+
+		/* (2) If performed -> update chip according to new state */
+		if( $performed ){
+
+			// {1} Try to update state //
+			$updateds = syscall(SOURCE_DIR.'/lib/global-state/update');
+
+			// {2} If not updated -> error //
+			if( !$updateds )
+				slog("Cannot update chips to '".implode('',$state)."'", 'mfrc522:loop');
+			// {3} If updated -> success //
+			else
+				slog("Chips updated to ".implode('',$state)."'", 'mfrc522:loop');
+
+		/* (3) If not performed -> log error */
+		}else
+			slog("Cannot perform action by '$code' at timeout $timeout", 'mfrc522:loop');
+
+		/* (4) Store user for next loop */
+		$last_user = $user['id'];
+		
 	}
 
 
@@ -236,9 +401,21 @@
 
 
 
+
+
+
+
+
 	slog('daemon started (loop)', 'mfrc522:loop');
 
-	while( true )
+	while( true ){
+
+		$start_ts = microtime(true);
+
 		mfrc522_loop();
+
+		while( microtime(true) - $start_ts < 0.5 );
+	
+	}
 ?>