add record exist validation on route request

src/Controller/Server/Nex.php

@@ -88,13 +88,16 @@ class Nex implements MessageComponentInterface
             break;
 
             // Chanel item
-            case (bool) preg_match('/\/(?<id>\d+)($|\.gmi)$/i', $request, $attribute):
+            case preg_match(
+                    '/\/(?<id>\d+)($|\.gmi)$/i',
+                    $request,
+                    $attribute
+                ) && $channelItem = $this->_database->getChannelItem(
+                    $attribute['id']
+                ):
 
                 $lines = [];
 
-                // Get channel item info
-                if ($channelItem = $this->_database->getChannelItem($attribute['id']))
-                {
                 if ($channelItem->title)
                 {
                     $lines[] = sprintf(
@@ -134,7 +137,6 @@ class Nex implements MessageComponentInterface
                         $channelItem->link
                     );
                 }
-                }
 
                 // Get channel info
                 if ($channel = $this->_database->getChannel($channelItem->channelId))
@@ -155,13 +157,16 @@ class Nex implements MessageComponentInterface
             break;
 
             // Channel page
-            case (bool) preg_match('/^\/(?<alias>.+)$/i', $request, $attribute):
+            case preg_match(
+                    '/^\/(?<alias>.+)$/i',
+                    $request,
+                    $attribute
+                ) && $channel = $this->_database->getChannelByAlias(
+                    $attribute['alias']
+                ):
 
                 $lines = [];
 
-                // Get channel info
-                if ($channel = $this->_database->getChannelByAlias($attribute['alias']))
-                {
                 if ($channel->title)
                 {
                     $lines[] = sprintf(
@@ -202,7 +207,6 @@ class Nex implements MessageComponentInterface
                         ) . PHP_EOL;
                     }
                 }
-                }
 
                 // Build response
                 $response = implode(