Update app.py

app.py

@@ -8,6 +8,25 @@ from sentence_transformers import SentenceTransformer
 import chromadb
 from chromadb.config import Settings
 from llama_cpp import Llama
+import os
+import requests
+from pathlib import Path
+
+
+# ---------------------- Downloading model ----------------------
+
+MODEL_URL = "https://huggingface.co/datasets/psy7743/llama3-8b-instruct-Q8_0.gguf/resolve/main/llama3-8b-instruct-Q8_0.gguf"
+MODEL_PATH = "llama3-8b-instruct-Q8_0.gguf"
+
+if not Path(MODEL_PATH).exists():
+    print("📥 Downloading LLaMA model from Hugging Face Datasets...")
+    response = requests.get(MODEL_URL, stream=True)
+    with open(MODEL_PATH, "wb") as f:
+        for chunk in response.iter_content(chunk_size=8192):
+            if chunk:
+                f.write(chunk)
+    print("✅ Download complete!")
+
 
 # ---------------------- Data Loading & Cleaning ----------------------