<?php
$serversettings_file = "../server/serversettings.ini";
$serversettings = parse_ini_file($serversettings_file, true);

$serverinfofile = '../server/info.txt';
$serverinfo = file_get_contents($serverinfofile);

$servertermsfile = '../server/terms.txt';
$serverterms = file_get_contents($servertermsfile);

$serverprvfile = '../server/privacypolicy.txt';
$serverprv = file_get_contents($serverprvfile);

function random_code($length = 8){
    return substr(str_shuffle('1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'), 0, $length);
}
function mb_to_gb($megabyte){
	$n_mb = $megabyte / 1024;
    return round($n_mb, 1);
}


require('../db.php');
require("../function/function.php");


// 変数の初期化
$datetime = array();
$user_name = null;
$message = array();
$message_data = null;
$error_message = array();
$pdo = null;
$stmt = null;
$res = null;
$option = null;

session_name('uwuzu_s_id');
session_set_cookie_params([
    'lifetime' => 0,
    'path' => '/',
    'domain' => '',
    'secure' => true,
    'httponly' => true,
    'samesite' => 'Lax'
]);
session_start();
session_regenerate_id(true);

try {

    $option = array(
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
    );
    $pdo = new PDO('mysql:charset=utf8mb4;dbname='.DB_NAME.';host='.DB_HOST , DB_USER, DB_PASS, $option);

} catch(PDOException $e) {

    // 接続エラーのときエラー内容を取得する
    $error_message[] = $e->getMessage();
}
//ログイン認証---------------------------------------------------
blockedIP($_SERVER['REMOTE_ADDR']);
$is_login = uwuzuUserLogin($_SESSION, $_COOKIE, $_SERVER['REMOTE_ADDR'], "admin");
if($is_login === false){
	header("Location: ../index.php");
	exit;
}else{
	$userid = safetext($is_login['userid']);
	$username = safetext($is_login['username']);
	$loginid = safetext($is_login["loginid"]);
	$role = safetext($is_login["role"]);
	$sacinfo = safetext($is_login["sacinfo"]);
	$myblocklist = safetext($is_login["blocklist"]);
	$is_Admin = safetext($is_login["admin"]);
}

$notiQuery = $pdo->prepare("SELECT COUNT(*) as notification_count FROM notification WHERE touserid = :userid AND userchk = 'none'");
$notiQuery->bindValue(':userid', $userid);
$notiQuery->execute();
$notiData = $notiQuery->fetch(PDO::FETCH_ASSOC);

$notificationcount = $notiData['notification_count'];

if(!empty($pdo)){
	try {
		//User
		$count1 = $pdo->query("SELECT userid FROM account")->rowCount();
		//Ueuse
		$count2 = $pdo->query("SELECT uniqid FROM ueuse")->rowCount();
		//Emoji
		$count3 = $pdo->query("SELECT sysid FROM emoji")->rowCount();
		// bot
		$count4 = $pdo->query("SELECT userid FROM account WHERE sacinfo = 'bot'")->rowCount();
		// ActiveUsers
		$count5 = $pdo->query("SELECT userid FROM account WHERE last_login_datetime > NOW() - INTERVAL 5 MINUTE")->rowCount();
		// AwayUsers
		$count6 = $pdo->query("SELECT userid FROM account WHERE last_login_datetime < NOW() - INTERVAL 5 MINUTE AND last_login_datetime >= NOW() - INTERVAL 15 MINUTE")->rowCount();
	} catch (PDOException $e) {
		$count1 = 0;
		$count2 = 0;
		$count3 = 0;
		$count4 = 0;
		$count5 = 0;
		$count6 = 0;
		$error_message[] = $e->getMessage();
		actionLog($userid, "error", "overview_admin", null, "統計情報の取得に失敗しました！", 4);
	}

	$migrationUserFollow = checkFollowMigrationProgress($pdo);

	//DB_Data
	try {
		$dbname = DB_NAME;
		$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
	
		// データベース内の全テーブル名を取得
		$query = "SELECT table_name FROM information_schema.tables WHERE table_schema = :database";
		$stmt = $pdo->prepare($query);
		$stmt->bindParam(':database', $dbname);
		$stmt->execute();
		$tables = $stmt->fetchAll(PDO::FETCH_COLUMN);
	
		// 各テーブルの正確な行数を取得
		$db_results = [];
		foreach ($tables as $table) {
			// 行数を取得
			$rowQuery = "SELECT COUNT(*) as count FROM `$table`";
			$rowStmt = $pdo->query($rowQuery);
			$rowCount = (int)$rowStmt->fetchColumn();
	
			// テーブルサイズを取得
			$sizeQuery = " 
				SELECT 
					ROUND(((data_length + index_length) / 1024 / 1024), 2) AS `Size` 
				FROM 
					information_schema.TABLES 
				WHERE 
					table_schema = :database AND table_name = :table;
			";
			$sizeStmt = $pdo->prepare($sizeQuery);
			$sizeStmt->execute([':database' => $dbname, ':table' => $table]);
			$size = (float)$sizeStmt->fetchColumn();
	
			// 結果を格納
			$db_results[] = [
				'Table' => $table,
				'Rows' => $rowCount,
				'Size' => $size,
			];
		}
	
		// サイズで並び替え
		usort($db_results, function ($a, $b) {
			return $b['Size'] <=> $a['Size'];
		});
	
		// 行数を最大桁数に揃えて0埋め
		$maxRows = max(array_column($db_results, 'Rows'));
		foreach ($db_results as &$table) {
			$table['Rows'] = str_pad($table['Rows'], strlen($maxRows), '0', STR_PAD_LEFT);
		}
		unset($table); // 参照を解除
	
	} catch (PDOException $e) {
		$db_results = null;
	}
}


if(function_exists("disk_free_space")){
    if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
        $disk = true;
        $totalRaw = disk_total_space('C:');
        $diskTotal = ($totalRaw > 0) ? (int)$totalRaw / 1024 / 1024 : 0;
        $diskFree = (int)disk_free_space('C:') / 1024 / 1024;
        $diskUmari = $diskTotal - $diskFree;

        if ($diskTotal > 0 && ($diskFree / $diskTotal < 0.1)) {
            $disk_over90p = true;
        } else {
            $disk_over90p = false;
        }
    
        $loadAve = null;
    } else {
        $disk = true;
        $totalRaw = disk_total_space('/');
        $diskTotal = ($totalRaw > 0) ? (int)$totalRaw / 1024 / 1024 : 0;
        $diskFree = (int)disk_free_space('/') / 1024 / 1024;
        $diskUmari = $diskTotal - $diskFree;

        if ($diskTotal > 0 && ($diskFree / $diskTotal < 0.1)) {
            $disk_over90p = true;
        } else {
            $disk_over90p = false;
        }

        if(function_exists("sys_getloadavg")){
            $loadAve = sys_getloadavg()[0];
        } else {
            $loadAve = null;
        }
    }
} else {
    $disk = false;
    $diskFree = 5000;
    $diskUmari = 5000;
    $diskTotal = 10000;
    $disk_over90p = false;
    if(function_exists("sys_getloadavg")){
        $loadAve = sys_getloadavg()[0];
    }else{
        $loadAve = null;
    }
}


require('../logout/logout.php');
?>
<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="../css/home.css">
<script src="../js/jquery-min.js"></script>
<script src="../js/unsupported.js"></script>
<script src="../js/console_notice.js"></script>
<meta name="viewport" content="width=device-width,initial-scale=1">
<link rel="apple-touch-icon" type="image/png" href="../favicon/apple-touch-icon-180x180.png">
<link rel="icon" type="image/png" href="../favicon/icon-192x192.png">
<title>サーバー概要 - <?php echo safetext($serversettings["serverinfo"]["server_name"]);?></title>

</head>

<body>
<?php require('../require/leftbox.php');?>
	<main>

	<?php if( !empty($error_message) ): ?>
		<ul class="errmsg">
			<?php foreach( $error_message as $value ): ?>
				<p>・ <?php echo $value; ?></p>
			<?php endforeach; ?>
		</ul>
	<?php endif; ?>
		<div class="admin_settings">
			<?php require('settings_left_menu.php');?>
		
			<div class="admin_right">
				<div class="formarea">
					<h1>サーバー概要</h1>
					<!--(サーバーアイコン)-->
					<?php if( !empty($serversettings["serverinfo"]["server_head"]) ){ ?>
					<div class="serverhead">
						<img src="<?php echo safetext($serversettings["serverinfo"]["server_head"]); ?>">
					</div>
					<?php }?>
					<?php if( !empty($serversettings["serverinfo"]["server_icon"]) ){ ?>
					<div class="servericon">
						<?php if( !empty($serversettings["serverinfo"]["server_head"]) ){ ?>
							<div class="up">
								<img src="<?php echo safetext($serversettings["serverinfo"]["server_icon"]); ?>">
							</div>
						<?php }else{?>
							<img src="<?php echo safetext($serversettings["serverinfo"]["server_icon"]); ?>">
						<?php }?>
					</div>
					<?php }?>
					<!--(サーバーアイコンここまで)-->
					<p>サーバー名</p>
					<p><?php if( !empty(safetext($serversettings["serverinfo"]["server_name"])) ){ echo safetext($serversettings["serverinfo"]["server_name"]); } ?></p>
					<hr>
					<p>サーバー紹介メッセージ</p>
					<p><?php $sinfo = explode("\n", $serverinfo); foreach ($sinfo as $info) { echo nl2br(safetext($info)); }?></p>
					<hr>
					<p>サーバー管理者の名前</p>
					<p><?php if( !empty(safetext($serversettings["serverinfo"]["server_admin"])) ){ echo safetext($serversettings["serverinfo"]["server_admin"]); } ?></p>
					<hr>
					<p>サーバーへのお問い合わせ用メールアドレス</p>
					<p><?php if( !empty(safetext($serversettings["serverinfo"]["server_admin_mailadds"])) ){ echo safetext($serversettings["serverinfo"]["server_admin_mailadds"]); } ?></p>
					<hr>
					<p>統計情報</p>
					<div class="overview">
						<div class="overview_cnt_l">
							<div class="p2">ユーザー数</div>
							<p><?php echo safetext($count1);?></p>
						</div>
						<div class="overview_cnt_r">
							<div class="p2">投稿数</div>
							<p><?php echo safetext($count2);?></p>
						</div>
					</div>
					<div class="overview">
						<div class="overview_cnt_l">
							<div class="p2">カスタム絵文字数</div>
							<p><?php echo safetext($count3);?></p>
						</div>
						<div class="overview_cnt_r">
							<div class="p2">Botアカウント数</div>
							<p><?php echo safetext($count4);?></p>
						</div>
					</div>
					<div class="overview">
						<div class="overview_cnt_l">
							<div class="p2">アクティブユーザー数<br>(過去5分間)</div>
							<p><?php echo safetext($count5);?></p>
						</div>
						<div class="overview_cnt_r">
							<div class="p2">離席中のユーザー数<br>(過去5分～15分間)</div>
							<p><?php echo safetext($count6);?></p>
						</div>
					</div>
					<hr>
					<p>ディスク空き容量</p>
					<?php if($disk == true){?>
						<?php if($disk_over90p == true){?>
							<p class="errmsg">90%以上が使用済みです。<br>早急に容量拡張などの対応を考えてください！</p>
						<?php }else{?>
							<p>ディスク空き容量には余裕があります。</p>
						<?php };?>
						
						<div class="graph">
							<?php 
								$totalGB = (int)mb_to_gb($diskTotal);
								$usedGB  = (int)mb_to_gb($diskUmari);
								$percent = ($totalGB > 0) ? round($usedGB / $totalGB * 100, 1) : 0;
							?>
							<div class="per" style="width:calc(<?php echo $percent; ?>% - 8px);">
							</div>
						</div>
						
						<p>使用済み : <?php echo mb_to_gb($diskUmari)."GB/".mb_to_gb($diskTotal);?>GB<br>
						空き容量 : <?php echo mb_to_gb($diskFree);?>GB</p>
					<?php }else{?>
						<p>空き容量の取得ができませんでした。</p>
					<?php };?>
					<hr>
					<p>ロードアベレージ</p>
					<div class="p2">ロードアベレージはCPUのコア数と照らし合わせて活用してください。<br>
						"ロードアベレージ/CPUコア数"で計算をした時に1.0を超えると処理が重くなっています。<br>
						※Windows環境ではロードアベレージの取得はできません。</div>

					<?php if(empty($loadAve)){?>
						<p>ロードアベレージの取得ができませんでした。</p>
					<?php }else{?>
						<p>過去1分間のロードアベレージ : <?php echo $loadAve?></p>
					<?php };?>
					<hr>
					<p>ユーザーのフォロー情報の移行進捗</p>
					<div class="p2">uwuzu v1.6.5にて行われたユーザーのフォロー情報の保持方法の改良における進捗の表示です。</div>
					<p>進捗: <?php echo safetext($migrationUserFollow['progress']);?>% (<?php echo safetext($migrationUserFollow['migrated']);?> / <?php echo safetext($migrationUserFollow['total']);?>)</p>
					<hr>
					<p>自動停止ロードアベレージ上限</p>
					<div class="p2">uwuzuが自動停止するロードアベレージの上限です。<br>"-1"で無制限です。</div>
					<p><?php echo safetext(STOP_LA);?></p>
					<hr>
					<p>ユーズのレートリミット</p>
					<div class="p2">1分間にユーズできる上限です。<br>"-1"で無制限です。</div>
					<p><?php echo safetext(RATE_LM);?> ueuse/min</p>
					<hr>
					<p>データベース</p>
					<div class="p2">データベースの容量情報です。</div>
					<table>
						<?php 
							if(!empty($db_results)){
								foreach ($db_results as $value) {
									echo "<tr>";
									echo "<td>".$value['Table']."</td>";
									echo "<td>".$value['Size']." MB</td>";
									echo "<td>".$value['Rows']." Records</td>";
									echo "</tr>";
								}
							}
						?>
					</table>
				</div>
			</div>
		</div>
	</main>

	<?php require('../require/rightbox.php');?>
	<?php require('../require/botbox.php');?>
	<?php require('../require/noscript_modal.php');?>
</body>

</html>