<?php
include 'common.php';


function DropExp($account_id, $character_uid, $login_key, $attacker_uid, $attacker_type, $prev_level, $prev_exp, $reduced_exp, $final_level, $final_exp, $zone_id)
{
	$dbhandle = DB_Connect();
	//Select DB
	$db_selected = mysqli_select_db($dbhandle, DB_NAME)
	or die("Could not select db");
	
	if(!CheckLoginKey($dbhandle, $account_id, $login_key))
	{
		PrintLoginKeyError();
		mysqli_close($dbhandle);
		return;
	}

	$update_query = "UPDATE character_list SET level=".$final_level.", character_exp=".$final_exp." WHERE user_id='".$account_id."' and character_uid=".$character_uid;
		
	//Query Result
	$result = @mysqli_query($dbhandle,$update_query);
	$response = "DROP_EXP_FAILED";
	$error = "";
	$insert_id = -1;
	$freeRecoveryCount = -1;
	
	if($result)
	{
		$response = "DROP_EXP_OK";
		$insert_id = LogDropExp($dbhandle, $character_uid, $attacker_uid, $attacker_type, $prev_level, $prev_exp, $reduced_exp, $final_level, $final_exp, $zone_id);
		$freeRecoveryCount = GetFreeExpRecoveryCount($dbhandle, $character_uid);
	}
	else
	{
		$error = mysqli_error($dbhandle);
	}

	 mysqli_close($dbhandle);
 
    $isXmlHttpRequest = (isset($_SERVER['HTTP_X_REQUESTED_WITH'])) ?
    (strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') ? true : false: false;
    ($isXmlHttpRequest) ? header('Content-type: application/json') : header('Content-type: text/plain');
 
    echo json_encode(array('result'=>$response,'error'=>$error,'updated_level'=>$final_level, 'updated_exp'=>$final_exp, 'log_id'=>$insert_id, 'free_recovery_count'=>$freeRecoveryCount));
}

function LogDropExp($dbhandle, $character_uid, $attacker_uid, $attacker_type, $prev_level, $prev_exp, $reduced_exp, $final_level, $final_exp, $zone_id)
{
	$now = new DateTime();
	$now->setTimezone(new DateTimeZone('UTC'));
	$strTime =  date_format($now, "Y-m-d H:i:s");

	$stmt = $dbhandle->prepare("INSERT INTO drop_exp_log (character_uid, attacker_uid, attacker_type, prev_level, prev_exp, reduced_exp, final_level, final_exp, zone_id, log_time) values(?,?,?,?,?,?,?,?,?,?)");
	$stmt->bind_param("iisiiiiiis", $character_uid, $attacker_uid, $attacker_type, $prev_level, $prev_exp, $reduced_exp, $final_level, $final_exp, $zone_id, $strTime);
	$result = $stmt->execute();
	$stmt->close();

	$insert_id = mysqli_insert_id($dbhandle);

	return $insert_id;
}

function GetFreeExpRecoveryCount($dbhandle, $character_uid)
{
    $stmt = $dbhandle->prepare("SELECT free_recovery_exp_count, last_used_time FROM free_recovery_exp WHERE character_uid=?");	
	$stmt->bind_param("i", $character_uid);
	$stmt->execute();
	$result = $stmt->get_result();	
	if($result)
	{		
		if($row = $result->fetch_assoc())
		{
			$count = $row["free_recovery_exp_count"];
			$time = $row["last_used_time"];
			mysqli_stmt_free_result($stmt);


			$now = new DateTime();
			$now->setTimezone(new DateTimeZone('UTC'));
			$newNow = new DateTime($now->format('Y-m-d')); //utc
			$usedTime = new DateTime($time);
			$newUsedTime = new DateTime($usedTime->format('Y-m-d'));

			$intvl = $newNow->diff($newUsedTime);
			if ($intvl->days >= 1)
			{
				//free_recovery_exp_count 3으로 변경 후 3리턴
				ResetRecoveryCount($dbhandle, $character_uid);
				$value = 3;
				return $value;
			}
			else
			{
				//free_recovery_exp_count 리턴
				$value = $count;
				return $value;
			}
			
		}
		else
		{
			//Insert DB
			InsertRecoveryCount($dbhandle, $character_uid);
			$value = 3;
			return $value;
		}
	}
	else
	{
		$return = "DB FAIL";
		$error = mysqli_error($dbhandle);
		$value = "";
		echo $error;
		exit;
	}
}

function ResetRecoveryCount($dbhandle, $character_uid)
{
	$stmt = $dbhandle->prepare("UPDATE free_recovery_exp SET free_recovery_exp_count=3 WHERE character_uid=?");
	$stmt->bind_param("i", $character_uid);
	$result = $stmt->execute();
	$stmt->close();
}

function InsertRecoveryCount($dbhandle, $character_uid)
{
	$now = new DateTime();
	//$now->setTimezone(new DateTimeZone('UTC'));
	$strNow = $now->format('Y-m-d H:i:s');
	
	$stmt = $dbhandle->prepare("INSERT INTO free_recovery_exp (character_uid, free_recovery_exp_count, last_used_time) VALUE(?,3,?)");	
	$stmt->bind_param("is", $character_uid, $strNow);
	$stmt->execute();
}

$json = json_decode(file_get_contents('php://input'));
$account_id = $json->account_id;
$character_uid = $json->character_uid;
$login_key = $json->login_key;
$attacker_uid = $json->attacker_uid;
$attacker_type = $json->attacker_type;
$prev_level = $json->prev_level;
$prev_exp = $json->prev_exp;
$reduced_exp = $json->reduced_exp;
$final_level = $json->final_level;
$final_exp = $json->final_exp;
$zone_id = $json->zone_id;

if(CheckValidatedServerIP())
{
	DropExp($account_id, $character_uid, $login_key, $attacker_uid, $attacker_type, $prev_level, $prev_exp, $reduced_exp, $final_level, $final_exp, $zone_id);
}
else
{
	$response = "INVALIDATED_SERVER";
	$error = "CheckValidatedServerIP ERROR";
	$isXmlHttpRequest = (isset($_SERVER['HTTP_X_REQUESTED_WITH'])) ?
	(strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') ? true : false: false;
	($isXmlHttpRequest) ? header('Content-type: application/json') : header('Content-type: text/plain'); 
 
	echo json_encode(array(	'result'=>$response,'error'=>$error	));
}

?>