update gemini embedding

rag_core/embedder.py

@@ -1,6 +1,7 @@
 import requests
 import time
 import logging
+import os
 from rag_core.utils import log_timed
 
 @log_timed("gửi API tạo embedding")
@@ -9,8 +10,8 @@ def get_embedding(text: str, retries: int = 3, base_timeout: int = 30):
         try:
             current_timeout = base_timeout * (i + 1)
             response = requests.post(
-                "https://vietcat-vietnameseembeddingv2.hf.space/embed",
-                json={"text": text},
+                "https://generativelanguage.googleapis.com/v1/models/text-embedding-004:embedContent?key="+os.getenv("GEMINI_API_KEY"),
+                json={"content": { "parts": [ { "text": text } ] }},
                 timeout=current_timeout
             )
             response.raise_for_status()