add room name twig filter, make optimizations

.env

@@ -26,6 +26,7 @@ APP_NAME=KevaChat
 # Connect memcached
 APP_MEMCACHED_HOST=127.0.0.1
 APP_MEMCACHED_PORT=11211
+APP_MEMCACHED_TIMEOUT=3600
 
 # Connect kevacoin
 

config/services.yaml

@@ -8,6 +8,7 @@ parameters:
     app.name: '%env(APP_NAME)%'
     app.memcached.host: '%env(APP_MEMCACHED_HOST)%'
     app.memcached.port: '%env(APP_MEMCACHED_PORT)%'
+    app.memcached.timeout: '%env(APP_MEMCACHED_TIMEOUT)%'
     app.kevacoin.protocol: '%env(APP_KEVACOIN_PROTOCOL)%'
     app.kevacoin.host: '%env(APP_KEVACOIN_HOST)%'
     app.kevacoin.port: '%env(APP_KEVACOIN_PORT)%'

src/Controller/ModuleController.php

@@ -56,33 +56,10 @@ class ModuleController extends AbstractController
             $this->getParameter('app.kevacoin.password')
         );
 
-        $list = [];
-
-        // Get configured rooms list
-        foreach ((array) explode('|', $this->getParameter('app.kevacoin.room.namespaces')) as $namespace)
-        {
-            $list[$namespace] = [
-                'name'      => $namespace,
-                'namespace' => $namespace,
-                'active'    => $namespace === $request->get('namespace')
-            ];
-        }
-
-        // Find related room names
-        foreach ((array) $client->kevaListNamespaces() as $value)
-        {
-            if (isset($list[$value['namespaceId']]))
-            {
-                $list[$value['namespaceId']]['name'] = $value['displayName'];
-            }
-        }
-
         return $this->render(
             'default/module/room.html.twig',
             [
-                'list' => array_values(
-                    $list
-                ),
+                'list' => (array) explode('|', $this->getParameter('app.kevacoin.room.namespaces')),
                 'form' =>
                 [
                     'namespace' =>

src/Controller/RoomController.php

@@ -61,20 +61,6 @@ class RoomController extends AbstractController
             $this->getParameter('app.kevacoin.password')
         );
 
-        // Set title
-        $name = $request->get('namespace');
-
-        foreach ((array) $client->kevaListNamespaces() as $namespace)
-        {
-            // Get current room namespace (could be third-party)
-            if ($namespace['namespaceId'] == $request->get('namespace'))
-            {
-                $name = $namespace['displayName'];
-
-                break;
-            }
-        }
-
         // Check for external rooms reading allowed in config
         if (
             !in_array(
@@ -178,7 +164,6 @@ class RoomController extends AbstractController
             return $this->render(
                 'default/room/index.rss.twig',
                 [
-                    'name'    => $name,
                     'feed'    => $feed,
                     'request' => $request
                 ],
@@ -190,7 +175,6 @@ class RoomController extends AbstractController
         return $this->render(
             'default/room/index.html.twig',
             [
-                'name'    => $name,
                 'feed'    => $feed,
                 'request' => $request
             ]
@@ -221,15 +205,13 @@ class RoomController extends AbstractController
             $this->getParameter('app.memcached.port')
         );
 
-        $memory = [
-            'app.add.post.remote.ip.delay' => md5(
-                sprintf(
-                    'kevachat.app.add.post.remote.ip.delay:%s.%s',
-                    $this->getParameter('app.name'),
-                    $request->getClientIp(),
-                ),
+        $memory = md5(
+            sprintf(
+                '%s.RoomController::post:add.post.remote.ip.delay:%s',
+                __DIR__,
+                $request->getClientIp(),
             ),
-        ];
+        );
 
         // Connect kevacoin
         $client = new \Kevachat\Kevacoin\Client(
@@ -322,7 +304,7 @@ class RoomController extends AbstractController
         }
 
         /// Validate remote IP limits
-        if ($delay = (int) $memcached->get($memory['app.add.post.remote.ip.delay']))
+        if ($delay = (int) $memcached->get($memory))
         {
             // Error
             return $this->redirectToRoute(
@@ -369,9 +351,9 @@ class RoomController extends AbstractController
         {
             // Register event time
             $memcached->set(
-                $memory['app.add.post.remote.ip.delay'],
+                $memory,
                 time(),
-                (int) $this->getParameter('app.add.post.remote.ip.delay')
+                (int) $this->getParameter('app.add.post.remote.ip.delay') // auto remove on cache expire
             );
 
             // Redirect back to room

src/Twig/AppExtension.php

@@ -37,6 +37,13 @@ class AppExtension extends AbstractExtension
                     $this,
                     'urlToMarkdown'
                 ]
+            ),
+            new TwigFilter(
+                'keva_namespace_value',
+                [
+                    $this,
+                    'kevaNamespaceValue'
+                ]
             )
         ];
     }
@@ -129,4 +136,69 @@ class AppExtension extends AbstractExtension
 
         return $texts[(($number % 100) > 4 && ($number % 100) < 20) ? 2 : $cases[min($number % 10, 5)]];
     }
+
+    // @TODO
+    // this is fix of keva magic with Kevachat\Kevacoin\Client::kevaListNamespaces results (on pending transactions exist in the namespaces)
+    // let's extract it from latest_KEVA_NS_ value and temporarily store results in memory cache
+    public function kevaNamespaceValue(
+        string $namespace
+    ): string
+    {
+        // Connect kevacoin
+        $client = new \Kevachat\Kevacoin\Client(
+            $this->container->getParameter('app.kevacoin.protocol'),
+            $this->container->getParameter('app.kevacoin.host'),
+            $this->container->getParameter('app.kevacoin.port'),
+            $this->container->getParameter('app.kevacoin.username'),
+            $this->container->getParameter('app.kevacoin.password')
+        );
+
+        // Connect memcached
+        $memcached = new \Memcached();
+        $memcached->addServer(
+            $this->container->getParameter('app.memcached.host'),
+            $this->container->getParameter('app.memcached.port')
+        );
+
+        // Generate unique cache key
+        $key = md5(
+            sprintf(
+                '%s.AppExtension::kevaNamespaceValue:%s',
+                __DIR__,
+                $namespace
+            )
+        );
+
+        // Return cached value if exists
+        if ($value = $memcached->get($key))
+        {
+            return $value;
+        }
+
+        // Find related room names
+        $_keva_ns = [];
+        foreach ((array) $client->kevaFilter($namespace) as $data)
+        {
+            if ($data['key'] == '_KEVA_NS_')
+            {
+                $_keva_ns[$data['height']] = $data['value'];
+            }
+        }
+
+        // Get last by it block height
+        if (!empty($_keva_ns))
+        {
+            $value = reset(
+                $_keva_ns
+            );
+
+            if ($memcached->set($key, $value, $this->container->getParameter('app.memcached.timeout')))
+            {
+                return (string) $value;
+            }
+        }
+
+        // Return original hash
+        return $namespace;
+    }
 }

templates/default/module/room.html.twig

@@ -2,17 +2,17 @@
     <input type="text" name="namespace" value="{{ form.namespace.value }}" placeholder="{{ 'join room by kevacoin namespace...' | trans }}" />
 </form>
 {% if list %}
-    {% for i, room in list %}
+    {% for i, namespace in list %}
         {% if i %}&bull;{% endif %}
         <h2>
-            {% if room.active %}
-                {{ room.name }}
+            {% if namespace == form.namespace.value %}
+                {{ namespace | keva_namespace_value }}
             {% else %}
-                <a href="{{ path('room_namespace', { namespace : room.namespace }) }}">{{ room.name }}</a>
+                <a href="{{ path('room_namespace', { namespace : namespace }) }}">{{ namespace | keva_namespace_value }}</a>
             {% endif %}
         </h2>
         <sup>
-            <a href="{{ path('room_namespace', { namespace : room.namespace, feed : 'rss' }) }}" title="{{ 'RSS' | trans }}" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" width="10" height="10" viewBox="0 0 16 16">
+            <a href="{{ path('room_namespace', { namespace : namespace, feed : 'rss' }) }}" title="{{ 'RSS' | trans }}" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" width="10" height="10" viewBox="0 0 16 16">
                 <path d="M2 0a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2zm1.5 2.5c5.523 0 10 4.477 10 10a1 1 0 1 1-2 0 8 8 0 0 0-8-8 1 1 0 0 1 0-2m0 4a6 6 0 0 1 6 6 1 1 0 1 1-2 0 4 4 0 0 0-4-4 1 1 0 0 1 0-2m.5 7a1.5 1.5 0 1 1 0-3 1.5 1.5 0 0 1 0 3"/>
             </svg></a>
         </sup>

templates/default/room/index.html.twig

@@ -1,5 +1,5 @@
 {% extends 'default/layout.html.twig' %}
-{% block head_title_content %}{{ name }} - {{ 'KevaChat' | trans }}{% endblock %}
+{% block head_title_content %}{{ request.get('namespace') | keva_namespace_value }} - {{ 'KevaChat' | trans }}{% endblock %}
 {% block main_content %}
     {{
         render(
@@ -28,7 +28,7 @@
                     •
                     <a href="{{ path('room_namespace', { namespace : request.get('namespace'), txid : post.id }) }}#{{ post.id }}">{{ 'reply' | trans }}</a>
                     {% if post.pending %}
-                        <span title="{{ 'pending for new block...' | trans }}">
+                        <span title="{{ 'pending in pool' | trans }}">
                             <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 16 16">
                                 <path d="M16 8A8 8 0 1 1 0 8a8 8 0 0 1 16 0M8 3.5a.5.5 0 0 0-1 0V9a.5.5 0 0 0 .252.434l3.5 2a.5.5 0 0 0 .496-.868L8 8.71z"/>
                             </svg>