Fix service switching, dynamic dashboard services, DB engine manager

- save-option: inline service switching (web/ftp/dns) instead of missing shell scripts
- stats: dynamic service list based on web_server/ftp_server/dns_server settings
- service action: allow all variants (nginx, pure-ftpd, pdns, nsd, etc.)
- mysqlManager: full rewrite with MySQL/MariaDB/PostgreSQL engine cards (install/remove/start/stop), active engine selector, all-databases table
- ftpServer page: dynamic — shows whichever FTP server is configured, not hardcoded proftpd
- db-engine-action: fixed duplicate INSERT line

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

panel/api/endpoints/system.php

@@ -302,9 +302,16 @@ match ($action) {
         $diskFree  = disk_free_space('/');
         $diskPct   = $diskTotal > 0 ? round((($diskTotal - $diskFree) / $diskTotal) * 100, 1) : 0;
 
-        // Services
+        // Services — dynamic list based on configured servers
+        $webSetting  = $db->fetchOne("SELECT `value` FROM settings WHERE `key`='web_server'")['value']  ?? 'apache';
+        $ftpSetting  = $db->fetchOne("SELECT `value` FROM settings WHERE `key`='ftp_server'")['value']  ?? 'proftpd';
+        $dnsSetting  = $db->fetchOne("SELECT `value` FROM settings WHERE `key`='dns_server'")['value']  ?? 'bind9';
+        $webSvc      = match($webSetting) { 'nginx' => 'nginx', 'apache' => 'apache2', default => 'apache2' };
+        $ftpSvc      = match($ftpSetting) { 'vsftpd' => 'vsftpd', 'pureftpd' => 'pure-ftpd', default => 'proftpd' };
+        $dnsSvc      = match($dnsSetting) { 'powerdns' => 'pdns', 'nsd' => 'nsd', 'none' => null, default => 'named' };
+        $svcList     = array_filter([$webSvc,'mysql','postfix','dovecot',$ftpSvc,$dnsSvc,'fail2ban']);
         $services = [];
-        foreach (['apache2','nginx','mysql','postfix','dovecot','proftpd','named','fail2ban'] as $svc) {
+        foreach ($svcList as $svc) {
             $active = trim(shell_exec("systemctl is-active $svc 2>/dev/null") ?: '');
             if ($active) $services[$svc] = $active;
         }
@@ -329,7 +336,9 @@ match ($action) {
         Auth::getInstance()->require('admin');
         $svc    = preg_replace('/[^a-z0-9\-_]/', '', $body['service'] ?? '');
         $cmd    = $body['command'] ?? 'status';
-        $allowed = ['apache2','nginx','mysql','postfix','dovecot','proftpd','named','fail2ban','php7.4-fpm','php8.1-fpm','php8.2-fpm','php8.3-fpm'];
+        $allowed = ['apache2','nginx','lighttpd','caddy','mysql','mariadb','postgresql','postfix','dovecot',
+                    'proftpd','vsftpd','pure-ftpd','named','bind9','pdns','nsd','fail2ban',
+                    'php7.4-fpm','php8.1-fpm','php8.2-fpm','php8.3-fpm'];
         if (!in_array($svc, $allowed)) Response::error("Service not managed: $svc");
         if (!in_array($cmd, ['start','stop','restart','reload','status'])) Response::error("Invalid command");
 
@@ -390,15 +399,31 @@ match ($action) {
         $value = $body['value'] ?? '';
         $allowed = ['web_server','mail_server','ftp_server','dns_server','whmcs_api_key','whmcs_enabled','ns1_hostname','ns2_hostname'];
         if (!in_array($key, $allowed)) Response::error("Invalid setting key: $key");
+
+        // Save before switching so the new value is in DB
         $db->execute("INSERT INTO settings (`key`,`value`) VALUES (?,?) ON DUPLICATE KEY UPDATE `value`=VALUES(`value`)", [$key, $value]);
 
-        // For server switches, run install/reload scripts
+        // Inline service switching — stop all alternatives, start the chosen one
-        if (in_array($key, ['web_server','ftp_server','dns_server','mail_server'])) {
+        if ($key === 'web_server') {
-            $script = "/opt/novacpx/bin/switch-{$key}.sh";
+            $webSvcs = ['apache2','nginx','lighttpd','caddy'];
-            if (is_executable($script)) {
+            foreach ($webSvcs as $s) { shell_exec("systemctl stop $s 2>/dev/null; systemctl disable $s 2>/dev/null"); }
-                shell_exec("sudo {$script} " . escapeshellarg($value) . " > /var/log/novacpx/switch-{$key}.log 2>&1 &");
+            $startSvc = match($value) { 'nginx' => 'nginx', 'apache' => 'apache2', default => 'apache2' };
+            shell_exec("systemctl enable $startSvc 2>/dev/null && systemctl start $startSvc 2>/dev/null");
+        } elseif ($key === 'ftp_server') {
+            foreach (['proftpd','vsftpd','pure-ftpd'] as $s) { shell_exec("systemctl stop $s 2>/dev/null; systemctl disable $s 2>/dev/null"); }
+            $startSvc = match($value) { 'vsftpd' => 'vsftpd', 'pureftpd' => 'pure-ftpd', default => 'proftpd' };
+            if (trim(shell_exec("dpkg -l $startSvc 2>/dev/null | grep -c '^ii'") ?: '0') > 0) {
+                shell_exec("systemctl enable $startSvc 2>/dev/null && systemctl start $startSvc 2>/dev/null");
+            }
+        } elseif ($key === 'dns_server') {
+            foreach (['named','bind9','pdns','nsd'] as $s) { shell_exec("systemctl stop $s 2>/dev/null; systemctl disable $s 2>/dev/null"); }
+            if ($value !== 'none') {
+                $startSvc = match($value) { 'powerdns' => 'pdns', 'nsd' => 'nsd', default => 'named' };
+                shell_exec("systemctl enable $startSvc 2>/dev/null && systemctl start $startSvc 2>/dev/null");
             }
         }
+        // mail_server: postfix + dovecot are always running; mail_server setting controls config template only
+
         audit("settings.{$key}", $value);
         Response::success(null, "Setting saved: {$key} = {$value}");
     })(),
@@ -471,5 +496,77 @@ match ($action) {
         else Response::error("CyberMail returned HTTP {$code}: " . substr($resp, 0, 200));
     })(),
 
+    // ── Database engine management ────────────────────────────────────────────
+    'db-engines' => (function() use ($db) {
+        Auth::getInstance()->require('admin');
+        $engines = [];
+        foreach (['mysql','mariadb','postgresql'] as $eng) {
+            $svc = match($eng) {
+                'mysql'      => 'mysql',
+                'mariadb'    => 'mariadb',
+                'postgresql' => 'postgresql',
+            };
+            $active   = trim(shell_exec("systemctl is-active $svc 2>/dev/null") ?: '');
+            $enabled  = trim(shell_exec("systemctl is-enabled $svc 2>/dev/null") ?: '');
+            $pkgCheck = match($eng) {
+                'mysql'      => 'dpkg -l mysql-server 2>/dev/null | grep -c "^ii"',
+                'mariadb'    => 'dpkg -l mariadb-server 2>/dev/null | grep -c "^ii"',
+                'postgresql' => 'dpkg -l postgresql 2>/dev/null | grep -c "^ii"',
+            };
+            $installed = (int)trim(shell_exec($pkgCheck) ?: '0') > 0;
+            $version   = '';
+            if ($installed) {
+                $version = match($eng) {
+                    'mysql'      => trim(shell_exec("mysql --version 2>/dev/null | grep -oP '[0-9]+\.[0-9]+\.[0-9]+'") ?: ''),
+                    'mariadb'    => trim(shell_exec("mariadb --version 2>/dev/null | grep -oP '[0-9]+\.[0-9]+\.[0-9]+'") ?: ''),
+                    'postgresql' => trim(shell_exec("psql --version 2>/dev/null | grep -oP '[0-9]+\.[0-9]+'") ?: ''),
+                };
+            }
+            $engines[$eng] = [
+                'installed' => $installed,
+                'active'    => $active === 'active',
+                'enabled'   => $enabled === 'enabled',
+                'version'   => $version,
+            ];
+        }
+        $active_db = $db->fetchOne("SELECT `value` FROM settings WHERE `key` = 'active_db_engine'")['value'] ?? 'mysql';
+        Response::success(['engines' => $engines, 'active_engine' => $active_db]);
+    })(),
+
+    'db-engine-action' => (function() use ($db, $body) {
+        Auth::getInstance()->require('admin');
+        $engine = preg_replace('/[^a-z]/', '', $body['engine'] ?? '');
+        $action = $body['action'] ?? '';
+        if (!in_array($engine, ['mysql','mariadb','postgresql'])) Response::error("Invalid engine");
+        if (!in_array($action, ['install','remove','start','stop','restart','set-active'])) Response::error("Invalid action");
+
+        $out = '';
+        if ($action === 'install') {
+            $pkg = match($engine) {
+                'mysql'      => 'mysql-server',
+                'mariadb'    => 'mariadb-server',
+                'postgresql' => 'postgresql postgresql-contrib',
+            };
+            $out = shell_exec("DEBIAN_FRONTEND=noninteractive apt-get install -y $pkg 2>&1");
+            shell_exec("systemctl enable $engine && systemctl start $engine 2>/dev/null");
+        } elseif ($action === 'remove') {
+            $pkg = match($engine) {
+                'mysql'      => 'mysql-server mysql-client',
+                'mariadb'    => 'mariadb-server mariadb-client',
+                'postgresql' => 'postgresql postgresql-contrib',
+            };
+            shell_exec("systemctl stop $engine 2>/dev/null || true");
+            $out = shell_exec("apt-get remove -y $pkg 2>&1");
+        } elseif ($action === 'set-active') {
+            $db->execute("INSERT INTO settings (`key`,`value`) VALUES ('active_db_engine',?) ON DUPLICATE KEY UPDATE `value`=VALUES(`value`)", [$engine]);
+            audit('settings.active_db_engine', $engine);
+            Response::success(null, "Active database engine set to $engine");
+        } else {
+            shell_exec("systemctl $action $engine 2>/dev/null");
+        }
+        audit("db-engine.$action", $engine);
+        Response::success(['output' => substr($out ?: '', -1000)], ucfirst($action) . " $engine done");
+    })(),
+
     default => Response::error("Unknown system action: $action", 404),
 };

panel/public/assets/js/admin.js

@@ -1597,24 +1597,81 @@ ${ips.length ? `
 
   // ── MySQL/DB Manager ───────────────────────────────────────────────────────
   async function mysqlManager() {
-    const res = await Nova.api('databases','list',{params:{account_id:0}});
+    const [engRes, dbRes] = await Promise.all([
-    const dbs = res?.data || [];
+      Nova.api('system','db-engines'),
+      Nova.api('databases','list',{params:{account_id:0}}),
+    ]);
+    const eng  = engRes?.data?.engines  || {};
+    const actE = engRes?.data?.active_engine || 'mysql';
+    const dbs  = dbRes?.data || [];
+
+    const engineCard = (id, label, icon) => {
+      const e = eng[id] || {};
+      const statusColor = e.active ? 'green' : (e.installed ? 'red' : 'default');
+      const statusText  = !e.installed ? 'Not Installed' : (e.active ? 'Running' : 'Stopped');
       return `
 <div class="card">
-  <div class="card-header"><span class="card-title">Databases</span></div>
+  <div class="card-header">
-  ${dbs.length ? `<table class="table"><thead><tr><th>Database</th><th>User</th><th>Type</th><th>Account</th><th>Size</th><th>Actions</th></tr></thead><tbody>
+    <span class="card-title">${icon} ${label}</span>
+    ${Nova.badge(statusText, statusColor)}
+    ${e.version ? `<span class="text-muted" style="font-size:.8rem;margin-left:.5rem">v${e.version}</span>` : ''}
+  </div>
+  <div class="card-body">
+    <div style="display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:.75rem">
+      ${!e.installed
+        ? `<button class="btn btn-xs btn-primary" onclick="dbEngineAction('${id}','install')">Install</button>`
+        : `
+        <button class="btn btn-xs" onclick="dbEngineAction('${id}','start')">Start</button>
+        <button class="btn btn-xs" onclick="dbEngineAction('${id}','stop')">Stop</button>
+        <button class="btn btn-xs" onclick="dbEngineAction('${id}','restart')">Restart</button>
+        <button class="btn btn-xs btn-danger" onclick="dbEngineAction('${id}','remove')">Remove</button>`
+      }
+    </div>
+    ${e.installed && id !== 'postgresql' ? `<a href="http://${location.hostname}/phpmyadmin" target="_blank" class="btn btn-xs btn-ghost">phpMyAdmin ↗</a>` : ''}
+    ${e.installed && id === 'postgresql' ? `<a href="http://${location.hostname}/pgadmin" target="_blank" class="btn btn-xs btn-ghost">pgAdmin ↗</a>` : ''}
+  </div>
+</div>`;
+    };
+
+    const dbTable = dbs.length ? `
+<table class="table"><thead><tr><th>Database</th><th>User</th><th>Type</th><th>Account</th><th>Actions</th></tr></thead><tbody>
 ${dbs.map(d=>`<tr>
-      <td><strong>${d.db_name}</strong></td>
+  <td><strong>${Nova.escHtml(d.db_name)}</strong></td>
-      <td>${d.db_user}</td>
+  <td>${Nova.escHtml(d.db_user||'—')}</td>
-      <td>${Nova.badge(d.db_type,'default')}</td>
+  <td>${Nova.badge(d.db_type||'mysql','default')}</td>
-      <td>${d.username||'—'}</td>
+  <td>${Nova.escHtml(d.username||'—')}</td>
-      <td>${d.size||'—'}</td>
+  <td><button class="btn btn-xs btn-danger" onclick="adminDropDB(${d.id},'${Nova.escHtml(d.db_name)}')">Drop</button></td>
-      <td><button class="btn btn-xs btn-danger" onclick="adminDropDB(${d.id},'${d.db_name}')">Drop</button></td>
 </tr>`).join('')}
-  </tbody></table>`
+</tbody></table>` : '<div class="empty" style="padding:2rem">No databases yet.</div>';
-  : '<div class="empty" style="padding:2rem">No databases.</div>'}
+
+    return `
+<div class="page-header"><h2 class="page-title">Database Engine Manager</h2></div>
+
+<div class="grid-3 gap-2" style="margin-bottom:1.5rem">
+  ${engineCard('mysql',    'MySQL',      '🐬')}
+  ${engineCard('mariadb',  'MariaDB',    '🦭')}
+  ${engineCard('postgresql','PostgreSQL','🐘')}
+</div>
+
+<div class="card" style="margin-bottom:1.5rem">
+  <div class="card-header"><span class="card-title">Active Engine</span><span class="text-muted" style="font-size:.82rem">Used for new account databases</span></div>
+  <div class="card-body" style="display:flex;align-items:center;gap:1rem;flex-wrap:wrap">
+    <select id="db-active-engine" class="form-control" style="max-width:200px">
+      <option value="mysql"      ${actE==='mysql'?'selected':''}>MySQL</option>
+      <option value="mariadb"    ${actE==='mariadb'?'selected':''}>MariaDB</option>
+      <option value="postgresql" ${actE==='postgresql'?'selected':''}>PostgreSQL</option>
+    </select>
+    <button class="btn btn-primary btn-sm" onclick="dbSetActive()">Set Active</button>
+    <span class="text-muted" style="font-size:.82rem">Currently: ${Nova.badge(actE,'green')}</span>
+  </div>
+</div>
+
+<div class="card">
+  <div class="card-header"><span class="card-title">All Databases</span><span class="text-muted" style="font-size:.8rem">${dbs.length} total</span></div>
+  ${dbTable}
 </div>`;
   }
+
   window.adminDropDB = (id, name) => {
     Nova.confirm(`Drop database ${name}? ALL DATA WILL BE LOST.`, async () => {
       const r = await Nova.api('databases','drop',{method:'POST',body:{id}});
@@ -1622,6 +1679,25 @@ ${ips.length ? `
       else Nova.toast(r?.message,'error');
     }, true);
   };
+  window.dbEngineAction = (engine, action) => {
+    const labels = {install:`Installing ${engine}…`,remove:`Removing ${engine}…`,start:`Starting…`,stop:`Stopping…`,restart:`Restarting…`};
+    const doIt = async () => {
+      Nova.toast(labels[action]||'Working…','info');
+      const r = await Nova.api('system','db-engine-action',{method:'POST',body:{engine,action}});
+      Nova.toast(r?.message||(r?.success?'Done':'Failed'), r?.success?'success':'error');
+      if (r?.success) adminPage('mysql-manager');
+    };
+    if (['install','remove'].includes(action)) {
+      Nova.confirm(`${action === 'install' ? 'Install' : 'Remove'} ${engine}?`, doIt, action === 'remove');
+    } else { doIt(); }
+  };
+  window.dbSetActive = async () => {
+    const engine = document.getElementById('db-active-engine')?.value;
+    if (!engine) return;
+    const r = await Nova.api('system','db-engine-action',{method:'POST',body:{engine,action:'set-active'}});
+    Nova.toast(r?.message||(r?.success?'Active engine updated':'Failed'), r?.success?'success':'error');
+    if (r?.success) adminPage('mysql-manager');
+  };
 
   // ── Mail Server ────────────────────────────────────────────────────────────
   async function mailServer() {
@@ -1660,21 +1736,28 @@ ${ips.length ? `
 
   // ── FTP Server ────────────────────────────────────────────────────────────
   async function ftpServer() {
-    const r = await Nova.api('system','stats');
+    const [sRes, optsRes] = await Promise.all([
-    const ftpStatus = r?.data?.services?.proftpd || 'unknown';
+      Nova.api('system','stats'),
+      Nova.api('system','server-options'),
+    ]);
+    const svcs    = sRes?.data?.services   || {};
+    const ftpConf = optsRes?.data?.ftp_server || 'proftpd';
+    const svcName = ftpConf === 'vsftpd' ? 'vsftpd' : (ftpConf === 'pureftpd' ? 'pure-ftpd' : 'proftpd');
+    const label   = ftpConf === 'vsftpd' ? 'vsftpd' : (ftpConf === 'pureftpd' ? 'Pure-FTPd' : 'ProFTPD');
+    const status  = svcs[svcName] || 'unknown';
     return `
 <div class="card">
   <div class="card-header">
-    <span class="card-title">FTP Server (ProFTPD)</span>
+    <span class="card-title">FTP Server (${label})</span>
-    ${Nova.badge(ftpStatus, ftpStatus==='active'?'green':'red')}
+    ${Nova.badge(status, status==='active'?'green':'red')}
     <div style="display:flex;gap:.5rem;margin-left:auto">
-      <button class="btn btn-sm" onclick="adminServiceAction('proftpd','restart')">Restart</button>
+      <button class="btn btn-sm" onclick="adminServiceAction('${svcName}','restart')">Restart</button>
-      <button class="btn btn-sm" onclick="adminServiceAction('proftpd','reload')">Reload</button>
+      <button class="btn btn-sm" onclick="adminServiceAction('${svcName}','reload')">Reload</button>
     </div>
   </div>
   <div style="padding:1.25rem">
     <div style="color:var(--muted);font-size:.85rem">
-      <p>ProFTPD uses virtual users stored in <code>/etc/proftpd/novacpx-users.passwd</code></p>
+      <p>Active FTP server: <strong>${label}</strong> — change in <a href="#" onclick="adminPage('server-options')">Server Options</a>.</p>
       <p style="margin-top:.5rem">FTP connections use SFTP on port 22 or passive FTP on ports 20/21.</p>
       <p style="margin-top:.5rem">Per-account FTP management is available in each account's FTP page.</p>
     </div>