1 files changed, 63 insertions, 0 deletions
diff --git a/modules-available/locationinfo/inc/locationinfo.inc.php b/modules-available/locationinfo/inc/locationinfo.inc.php
new file mode 100644
index 00000000..6b13ad9a
--- /dev/null
+++ b/modules-available/locationinfo/inc/locationinfo.inc.php
@@ -0,0 +1,63 @@
+<?php
+
+class LocationInfo
+{
+
+	/**
+	 * Gets the pc data and returns it's state.
+	 *
+	 * @param array $pc The pc data from the db. Array('logintime' =>, 'lastseen' =>, 'lastboot' =>)
+	 * @return int pc state
+	 */
+	public static function getPcState($pc)
+	{
+		/*   pcState:
+		 *  [0] =  IDLE (NOT IN USE)
+		 *  [1] = OCCUPIED (IN USE)
+		 *  [2] = OFF
+		 *  [3] = 10 days offline (BROKEN?)
+		 */
+		// TODO USE STATE NAME instead of numbers
+
+		$logintime = (int)$pc['logintime'];
+		$lastseen = (int)$pc['lastseen'];
+		$lastboot = (int)$pc['lastboot'];
+		$NOW = time();
+
+		if ($NOW - $lastseen > 14 * 86400) {
+			return "BROKEN";
+		} elseif (($NOW - $lastseen > 610) || $lastboot === 0) {
+			return "OFF";
+		} elseif ($logintime === 0) {
+			return "IDLE";
+		} elseif ($logintime > 0) {
+			return "OCCUPIED";
+		}
+		return -1;
+	}
+
+	/**
+	 * Set current error message of given server. Pass null or false to clear.
+	 *
+	 * @param int $serverId id of server
+	 * @param string $message error message to set, null or false clears error.
+	 */
+	public static function setServerError($serverId, $message)
+	{
+		if ($message === false || $message === null) {
+			Database::exec("UPDATE `locationinfo_coursebackend` SET error = NULL
+					WHERE serverid = :id", array('id' => $serverId));
+		} else {
+			if (empty($message))  {
+				$message = '<empty error message>';
+			}
+			$error = json_encode(array(
+				'timestamp' => time(),
+				'error' => (string)$message
+			));
+			Database::exec("UPDATE `locationinfo_coursebackend` SET error = :error
+					WHERE serverid = :id", array('id' => $serverId, 'error' => $error));
+		}
+	}
+
+}