Update ocr_llm_utils.py

edited gcv secrets handling

ocr_llm_utils.py

@@ -7,7 +7,13 @@ from groq import Groq
 load_dotenv()
 
 # Load credentials from env variable
-os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = os.getenv("GCP_KEY_PATH")
+
+# Save secret JSON string to a temporary file
+gcv_json_str = os.environ.get("GCV_JSON")
+if gcv_json_str:
+    with open("gcv_temp.json", "w") as f:
+        f.write(gcv_json_str)
+    os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "gcv_temp.json"
 
 client = Groq(api_key=os.getenv("GROQ_API_KEY"))