optimize retrieval

src/Commerce/CommerceQueryParser.php

@@ -131,13 +131,13 @@ final readonly class CommerceQueryParser
             return [];
         }
 
-        foreach ($matches[1] as $size) {
+        foreach ($matches[1] ?? [] as $size) {
-            $sizes[] = trim($size);
+            $sizes[] = trim((string) $size);
         }
 
         if (preg_match_all($this->intentConfig->getSizeTokenValuePattern(), $prompt, $tokenMatches) !== false) {
-            foreach ($tokenMatches[1] as $sizeToken) {
+            foreach ($tokenMatches[0] ?? [] as $sizeToken) {
-                $sizes[] = trim($sizeToken);
+                $sizes[] = trim((string) $sizeToken);
             }
         }
 
@@ -242,6 +242,7 @@ final readonly class CommerceQueryParser
             fn(string $token): bool => mb_strlen($token) >= $this->config->getMinDirectProductTokenLength()
         );
 
+        $tokens = $this->filterSearchTokens($tokens);
         $tokens = array_values(array_unique($tokens));
 
         return trim(implode(' ', $tokens));
@@ -286,6 +287,10 @@ final readonly class CommerceQueryParser
                     continue;
                 }
 
+                if ($this->isSearchControlToken($token)) {
+                    continue;
+                }
+
                 $tokens[$token] = $token;
             }
         }
@@ -299,14 +304,38 @@ final readonly class CommerceQueryParser
      */
     private function filterSearchTokens(array $tokens): array
     {
-        $stopWords = $this->config->getFilterSearchTokens();
-
         return array_values(array_filter(
             $tokens,
-            static fn(string $token): bool => !in_array($token, $stopWords, true)
+            fn(string $token): bool => !$this->isSearchControlToken($token)
         ));
     }
 
+    private function isSearchControlToken(string $token): bool
+    {
+        $token = trim(mb_strtolower($token));
+
+        if ($token === '') {
+            return true;
+        }
+
+        if (in_array($token, $this->config->getFilterSearchTokens(), true)) {
+            return true;
+        }
+
+        return in_array($token, [
+            'shop',
+            'store',
+            'produkt',
+            'produkte',
+            'artikel',
+            'kaufen',
+            'kaufe',
+            'bestellen',
+            'bestelle',
+            'online',
+        ], true);
+    }
+
     private function isDirectProductQuery(string $prompt): bool
     {
         if ($prompt === '') {
@@ -328,8 +357,10 @@ final readonly class CommerceQueryParser
             PREG_SPLIT_NO_EMPTY
         ) ?: [];
 
+        $tokens = $this->filterSearchTokens($tokens);
+
         return count($tokens) <= $this->config->getDirectProductMaxTokens()
-            && preg_match($this->config->getDirectProductDigitPattern(), $prompt) === 1;
+            && preg_match($this->config->getDirectProductDigitPattern(), implode(' ', $tokens)) === 1;
     }
 
     private function containsModelLikePhrase(string $text): bool

src/Config/CommerceIntentConfig.php

@@ -296,4 +296,19 @@ final class CommerceIntentConfig
     {
         return 1;
     }
+
+    public function getModelLikeProductPattern(): string
+    {
+        return '/\b[a-zäöüß][a-zäöüß®\-]*(?:\s+[a-zäöüß][a-zäöüß®\-]*){0,2}\s+\d{2,5}[a-z0-9\-]*\b/u';
+    }
+
+    public function getModelLikeProductSignalLabel(): string
+    {
+        return 'model_like_product';
+    }
+
+    public function getModelLikeProductSignalScore(): int
+    {
+        return 3;
+    }
 }

src/Intent/CommerceIntentLite.php

@@ -45,6 +45,7 @@ final class CommerceIntentLite
 
         [$score, $signals] = $this->applyStrongSignals($prompt, $score, $signals);
         [$score, $signals] = $this->applySkuSignal($prompt, $score, $signals);
+        [$score, $signals] = $this->applyModelLikeProductSignal($prompt, $score, $signals);
         [$score, $signals] = $this->applyPriceSignal($prompt, $score, $signals);
         [$score, $signals] = $this->applySizeSignal($prompt, $score, $signals);
         [$score, $signals] = $this->applySizeTokenSignal($prompt, $score, $signals);
@@ -144,6 +145,16 @@ final class CommerceIntentLite
         return [$score, $signals];
     }
 
+    private function applyModelLikeProductSignal(string $prompt, int $score, array $signals): array
+    {
+        if (preg_match($this->config->getModelLikeProductPattern(), $prompt) === 1) {
+            $score += $this->config->getModelLikeProductSignalScore();
+            $signals[] = $this->config->getModelLikeProductSignalLabel();
+        }
+
+        return [$score, $signals];
+    }
+
     /**
      * @param string[] $signals
      * @return array{0:int,1:string[]}