<?php
session_start();

$confDir = realpath('/Users/catantech/Desktop/Project/php/nginx-manager/conf/conf.d');
$nginxExe = '/opt/homebrew/bin/nginx';

if (!$confDir) {
    die("❌ 找不到 conf.d 目錄");
}

function reloadNginx() {
    global $nginxExe;
    $configPath = '/opt/homebrew/etc/nginx/nginx.conf'; // 請根據實際路徑調整
    $cmd = "\"$nginxExe\" -s reload -c \"$configPath\" 2>&1";
    exec($cmd, $output, $code);
    return ['code' => $code, 'output' => $output];
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $port = intval($_POST['port']);
    $confFile = "$confDir/{$port}.conf";
    $resultMsg = '';

    if ($_POST['action'] === 'add') {
        $baseDir = '/Users/catantech/Desktop/';
        $relativeRoot = trim($_POST['root']);

        // 防止目錄跳脫
        if (strpos($relativeRoot, '..') !== false) {
            $resultMsg = "❌ Root 路徑不能包含 '..' ";
        } else {
            // 拼接完整路徑
            $fullRoot = rtrim($baseDir, '/') . '/' . ltrim($relativeRoot, '/');

            $serverBlock = <<<CONF
server {
    listen $port;
    server_name localhost;

    location / {
        root   $fullRoot;
        index  index.html;
        try_files \$uri \$uri/ /index.html;
    }
}
CONF;

            $writeOk = file_put_contents($confFile, $serverBlock) !== false;
            if (!$writeOk) {
                $resultMsg = "❌ 寫入設定檔失敗";
            } else {
                $reload = reloadNginx();
                if ($reload['code'] !== 0) {
                    $resultMsg = "❌ NGINX 重啟失敗：" . implode("\n", $reload['output']);
                } else {
                    $resultMsg = "✅ 新增 Server 成功，並已重啟 NGINX";
                }
            }
        }

    } elseif ($_POST['action'] === 'delete') {
        if (file_exists($confFile)) {
            $delOk = unlink($confFile);
            if (!$delOk) {
                $resultMsg = "❌ 刪除設定檔失敗";
            } else {
                $reload = reloadNginx();
                if ($reload['code'] !== 0) {
                    $resultMsg = "❌ NGINX 重啟失敗：" . implode("\n", $reload['output']);
                } else {
                    $resultMsg = "✅ 刪除 Server 成功，並已重啟 NGINX";
                }
            }
        } else {
            $resultMsg = "❌ 設定檔不存在";
        }
    }

    $_SESSION['resultMsg'] = $resultMsg;
    header("Location: index.php");
    exit;
}