added wss tools 9

app/Services/PriceBroadcastService.php

@@ -12,6 +12,10 @@ class PriceBroadcastService
 
     private const LIST_HASH_KEY = 'price_broadcast:list_hash';
 
+    private const LIST_SNAPSHOT_KEY = 'price_broadcast:list_snapshot';
+
+    private const LIST_SNAPSHOT_SECONDS = 8;
+
     /**
      * برادکست SSE — payload کامل last/list وقتی داده عوض شود.
      *
@@ -90,9 +94,29 @@ class PriceBroadcastService
         $this->publishListIfChanged(true);
     }
 
-    public function buildListPayload(): ?array
+    public function buildListPayload(bool $allowCached = false): ?array
     {
-        return $this->buildProductListPayload();
+        if ($allowCached) {
+            $cached = Cache::get(self::LIST_SNAPSHOT_KEY);
+            if (
+                is_array($cached)
+                && is_array($cached['body'] ?? null)
+                && isset($cached['stored_at'])
+                && now()->diffInSeconds($cached['stored_at']) <= self::LIST_SNAPSHOT_SECONDS
+            ) {
+                return $cached['body'];
+            }
+        }
+
+        $body = $this->buildProductListPayload();
+        if ($body !== null && $body !== []) {
+            Cache::put(self::LIST_SNAPSHOT_KEY, [
+                'body' => $body,
+                'stored_at' => now(),
+            ], now()->addSeconds(self::LIST_SNAPSHOT_SECONDS + 5));
+        }
+
+        return $body;
     }
 
     public function broadcastListIfChanged(bool $force = false): bool
@@ -112,14 +136,15 @@ class PriceBroadcastService
             return false;
         }
 
-        if (! $force && ! $this->rememberHashIfChanged(self::LIST_HASH_KEY, $this->listIdentity($listPayload))) {
+        if (! $force && ! $this->rememberHashIfChanged(self::LIST_HASH_KEY, self::listIdentity($listPayload))) {
             return false;
         }
 
         if ($force) {
-            $this->rememberHashIfChanged(self::LIST_HASH_KEY, $this->listIdentity($listPayload));
+            $this->rememberHashIfChanged(self::LIST_HASH_KEY, self::listIdentity($listPayload));
         }
 
+        Cache::forget(self::LIST_SNAPSHOT_KEY);
         app(PriceStreamService::class)->publish('list', $listPayload);
 
         return true;
@@ -129,7 +154,7 @@ class PriceBroadcastService
      * @param array<int, array<string, mixed>> $listPayload
      * @return array<int, array<string, int|bool>>
      */
-    private function listIdentity(array $listPayload): array
+    public static function listIdentity(array $listPayload): array
     {
         $identity = [];