add missing fiel

rag_core/business.py

@@ -0,0 +1,35 @@
+import os
+import logging
+from rag_core.chunker import chunk_legal_text
+from rag_core.embedder import get_embedding
+from rag_core.retriever import Retriever
+from rag_core.llm import generate_answer
+
+retriever = Retriever()
+ready = retriever.index is not None
+
+def build_index():
+    global ready
+    logging.info("🔄 Bắt đầu xây FAISS index từ đầu...")
+    with open("data/raw_law.txt", "r", encoding="utf-8") as f:
+        text = f.read()
+    chunks = chunk_legal_text(text)
+    retriever.build(chunks, get_embedding)
+    ready = True
+
+def answer_query(query):
+    if not ready:
+        return {"error": "Index chưa sẵn sàng. Vui lòng bấm 'Xây Index' hoặc gọi API rescan."}
+    docs = retriever.query(query, get_embedding)
+    prompt = "\n\n".join(docs) + f"\n\nCâu hỏi: {query}\nTrả lời:"
+    answer = generate_answer(prompt)
+    return {"answer": answer}
+
+def rescan_index():
+    if not ready:
+        return {"error": "Index chưa sẵn sàng."}
+    with open("data/raw_law.txt", "r", encoding="utf-8") as f:
+        text = f.read()
+    chunks = chunk_legal_text(text)
+    retriever.rescan_and_append(chunks, get_embedding)
+    return {"status": "Rescan & update thành công."}