<?php

function maintenanceActive()
{
	if (!maintenanceMode()){
		$link = mysql_connect(MYSQL_HOST, MYSQL_USER, MYSQL_PASS);
		if (!$link) {
			return false;
		}
		$sql = "INSERT INTO sdv1.maintenance (mode, countMaintenance, dateEven) ".
			"VALUES (1, 0, '".date('Y-m-d H:i:s')."')";
		if (mysql_query($sql, $link)){
			return true;
		}
	}
	return false;
}

function maintenanceDesactive()
{
	if(maintenanceMode()){
		$link = mysql_connect(MYSQL_HOST, MYSQL_USER, MYSQL_PASS);
		if (!$link) {
			return false;
		}
		$sql = "INSERT INTO sdv1.maintenance (mode, countMaintenance, dateEven) ".
			"VALUES (0, 0, '".date('Y-m-d H:i:s')."')";
		if (mysql_query($sql, $link)){
			return true;
		}
	}
	return false;
}

function maintenanceMode($error = false)
{
	$countEvenMax = 70;
	$link = mysql_connect(MYSQL_HOST, MYSQL_USER, MYSQL_PASS);
	if (!$link) {
		return false;
	}
	$sql = 'SELECT * FROM sdv1.maintenance ORDER BY dateEven DESC, LIMIT 1';
	$result = mysql_query($sql, $link);
	if (!$result) {
		return false;
	}
	if (mysql_num_rows($result) == 0){
		return false;
	}
	$info = mysql_fetch_assoc($result);
	if ($info[0]['countMaintenance']>=$countEventMax || $info[0]['mode']==1){
		if ($error &&
			$info[0]['countMaintenance']>=$countEventMax && $info[0]['mode']==0)
		{
			$sql = "UPDATE sdv1.maintenance SET mode=1, ".
				"dateEven=".date('Y-m-d H:i:s').
	 			" WHERE ".$info[0]['id'];
			if (mysql_query($sql, $link)){
				return true;
			}
		}
		return true;
	}
	return false;
}

function maintenanceIncrement()
{
	$link = mysql_connect(MYSQL_HOST, MYSQL_USER, MYSQL_PASS);
	if (!$link) {
		return false;
	}
	$sql = 'SELECT id FROM sdv1.maintenance ORDER BY dateEven DESC, LIMIT 1';
	$result = mysql_query($sql, $link);
	if (!$result) {
		return false;
	}
	if (mysql_num_rows($result)==0){
		$sql = "INSERT INTO sdv1.maintenance (mode, countMaintenance, dateEven) ".
			"VALUES (0, 0, '".date('Y-m-d H:i:s')."')";
		$result = mysql_query($sql, $link);
	}
	$info = mysql_fetch_assoc($result);
	$sql = "UPDATE sdv1.maintenance SET countMaintenance=countMaintenance+1, ".
		"dateEven=".date('Y-m-d H:i:s');
	 	" WHERE ".$info[0]['id'];
	if (mysql_query($sql, $link)){
		return true;
	}
	return false;
}