fix: response parsing bug for gemini

app/services/llm.py

@@ -86,7 +86,7 @@ def _generate_response(prompt: str) -> str:
 
         if llm_provider == "gemini":
             import google.generativeai as genai
-            genai.configure(api_key=api_key)
+            genai.configure(api_key=api_key, transport='rest')
 
             generation_config = {
                 "temperature": 0.5,
@@ -118,11 +118,15 @@ def _generate_response(prompt: str) -> str:
                                           generation_config=generation_config,
                                           safety_settings=safety_settings)
 
-            convo = model.start_chat(history=[])
+            try:
+                response = model.generate_content(prompt)
+                candidates = response.candidates
+                generated_text = candidates[0].content.parts[0].text
+            except (AttributeError, IndexError) as e:
+                print("Gemini Error:", e)
+
+            return generated_text
 
-            convo.send_message(prompt)
-            return convo.last.text
-
         if llm_provider == "cloudflare":
             import requests
             response = requests.post(
@@ -180,9 +184,9 @@ def generate_script(video_subject: str, language: str = "", paragraph_number: in
 1. the script is to be returned as a string with the specified number of paragraphs.
 2. do not under any circumstance reference this prompt in your response.
 3. get straight to the point, don't start with unnecessary things like, "welcome to this video".
-4. you must not include any type of markdown or formatting in the script, never use a title. 
-5. only return the raw content of the script. 
-6. do not include "voiceover", "narrator" or similar indicators of what should be spoken at the beginning of each paragraph or line. 
+4. you must not include any type of markdown or formatting in the script, never use a title.
+5. only return the raw content of the script.
+6. do not include "voiceover", "narrator" or similar indicators of what should be spoken at the beginning of each paragraph or line.
 7. you must not mention the prompt, or anything about the script itself. also, never talk about the amount of paragraphs or lines. just write the script.
 8. respond in the same language as the video subject.