QuantumultX: keep expected behavior for host

According to the documentation, quantumultx exposes one param for both sni and ws host. and sni priority is usually higher than ws host in other similar apps, we keep the behavior here.
ref: https://github.com/crossutility/Quantumult-X/blob/8b6d7d84fce4cf74c6936d075ff769486bd09077/sample.conf#L91

app/Utils/QuantumultX.php

@@ -33,31 +33,32 @@ class QuantumultX
         ];
 
         if ($server['tls']) {
-            if ($server['network'] === 'tcp') {
+            if ($server['network'] === 'tcp')
                 array_push($config, 'obfs=over-tls');
-            } else {
-                array_push($config, 'obfs=wss');
-            }
-        } else if ($server['network'] === 'ws') {
-            array_push($config, 'obfs=ws');
-        }
-
-        if ($server['tls']) {
             if ($server['tlsSettings']) {
                 $tlsSettings = json_decode($server['tlsSettings'], true);
                 if (isset($tlsSettings['allowInsecure']) && !empty($tlsSettings['allowInsecure']))
                     array_push($config, 'tls-verification=' . ($tlsSettings['allowInsecure'] ? 'false' : 'true'));
+                if (isset($tlsSettings['serverName']) && !empty($tlsSettings['serverName']))
+                    $host = $tlsSettings['serverName'];
             }
         }
         if ($server['network'] === 'ws') {
+            if ($server['tls'])
+                array_push($config, 'obfs=wss');
+            else
+                array_push($config, 'obfs=ws');
             if ($server['networkSettings']) {
                 $wsSettings = json_decode($server['networkSettings'], true);
                 if (isset($wsSettings['path']) && !empty($wsSettings['path']))
                     array_push($config, "obfs-uri={$wsSettings['path']}");
-                if (isset($wsSettings['headers']['Host']) && !empty($wsSettings['headers']['Host']))
-                    array_push($config, "obfs-host={$wsSettings['headers']['Host']}");
+                if (isset($wsSettings['headers']['Host']) && !empty($wsSettings['headers']['Host']) && !isset($host))
+                    $host = $wsSettings['headers']['Host'];
             }
         }
+        if (isset($host)) {
+            array_push($config, "obfs-host={$host}");
+        }
 
         $uri = implode(',', $config);
         $uri .= "\r\n";