add chat gpt function and fix errors

src/Service/OpenAI/Client.php

@@ -49,7 +49,7 @@ public function generateText(string $prompt): Choice
         }
 
         if (isset($json['error'])) {
-            $msg = 'OpenAI Error: ' . $json['error'] . '['.$json['code'].']';
+            $msg = 'OpenAI Error: ' . $json['error']['message'] . '[' . $json['error']['code'] . ']';
             throw new \Exception($msg);
         }
 
@@ -102,4 +102,58 @@ public function generateImage(string $prompt, string $size): string
 
         return (string)$json['data'][0]['url'];
     }
+
+    /**
+     * @param string $prompt
+     * @throws \JsonException
+     * @return Choice
+     */
+    public function askChatGPT(string $prompt): Choice
+    {
+        $params = [
+            'model' => "gpt-3.5-turbo",
+            'messages' => [
+                ['role' => 'user', 'content' => $prompt],
+            ],
+            'temperature' => 0.8,
+            'max_tokens' => 400,
+            'top_p' => 1.0,
+            'frequency_penalty' => 0.0,
+            'presence_penalty' => 0.0,
+        ];
+
+
+        $complete = (string)$this->openAi->chat($params);
+
+        $json = json_decode($complete, true, 512, JSON_THROW_ON_ERROR);
+
+        if (!is_array($json)) {
+            return new Choice('');
+        }
+
+        if (isset($json['error'])) {
+            $msg = 'OpenAI Error: ' . $json['error']['message'] . '[' . $json['error']['code'] . ']';
+            throw new \Exception($msg);
+        }
+
+        if (!isset($json['choices'])) {
+            throw new \Exception('No choices found in OpenAI response.');
+        }
+
+        $choices = $json['choices'];
+
+        if (!is_array($choices) || count($choices) <= 0) {
+            return new Choice('');
+        }
+
+        if (!isset($choices[0]['message']['content'])) {
+            return new Choice('');
+        }
+
+        $choiceData = $choices[0];
+
+        $text = trim($choiceData['message']['content']);
+
+        return new Choice($text);
+    }
 }