# from utils.vector_store import get_vector_store

# def test_retriever(query: str, k: int = 3, vector_store_path="./chroma_db"):
#     """Test retriever with specific vector store"""
#     vector_store = get_vector_store(persist_directory=vector_store_path)
#     retriever = vector_store.as_retriever(search_kwargs={"k": k})
#     docs = retriever.get_relevant_documents(query)

#     # Deduplicate based on page_content
#     seen = set()
#     unique_docs = []
#     for doc in docs:
#         if doc.page_content not in seen:
#             seen.add(doc.page_content)
#             unique_docs.append(doc)

#     print(f"\nUsing vector store: {vector_store_path}")
#     print(f"Top {len(unique_docs)} unique chunks retrieved for: '{query}'\n")

#     for i, doc in enumerate(unique_docs, 1):
#         source = doc.metadata.get("source", "unknown")
#         page = doc.metadata.get("page", "N/A")
#         print(f"--- Chunk #{i} ---")
#         print(f"Source: {source} | Page: {page}")
#         preview = doc.page_content[:300]
#         if len(doc.page_content) > 300:
#             preview += "..."
#         print(preview)
#         print()


# def compare_retrievers(query: str, k: int = 3):
#     """Compare results from different vector stores"""
#     stores = {
#         "MES Manual": "./vector_stores/mes_db",
#         "Technical Docs": "./vector_stores/tech_db",
#         "General Docs": "./vector_stores/general_db"
#     }

#     print(f"\n=== Comparing retrievers for: '{query}' ===\n")

#     for store_name, store_path in stores.items():
#         try:
#             print(f"🔍 {store_name}:")
#             print("-" * 50)
#             test_retriever(query, k=k, vector_store_path=store_path)
#             print("\n" + "="*60 + "\n")
#         except Exception as e:
#             print(f"❌ Could not access {store_name}: {e}\n")


# if __name__ == "__main__":
#     print("Multi-Vector Store RAG Tester")
#     print("\nAvailable commands:")
#     print("  - Enter a question to test default store")
#     print("  - Type 'mes: <question>' for MES manual")
#     print("  - Type 'tech: <question>' for technical docs")
#     print("  - Type 'general: <question>' for general docs")
#     print("  - Type 'compare: <question>' to compare all stores")
#     print("  - Type 'exit' to quit")

#     while True:
#         user_input = input("\nEnter your question: ").strip()

#         if user_input.lower() == "exit":
#             break
#         elif user_input.lower().startswith("mes: "):
#             query = user_input[5:]
#             test_retriever(query, vector_store_path="./vector_stores/mes_db")
#         elif user_input.lower().startswith("tech: "):
#             query = user_input[6:]
#             test_retriever(query, vector_store_path="./vector_stores/tech_db")
#         elif user_input.lower().startswith("general: "):
#             query = user_input[9:]
#             test_retriever(query, vector_store_path="./vector_stores/general_db")
#         elif user_input.lower().startswith("compare: "):
#             query = user_input[9:]
#             compare_retrievers(query)
#         else:
#             test_retriever(user_input)  # Default store


from utils.vector_store import get_vector_store


def test_retriever(query: str, k: int = 3, vector_store_path="./chroma_db"):
    """Test retriever with specific vector store"""
    vector_store = get_vector_store(persist_directory=vector_store_path)
    retriever = vector_store.as_retriever(search_kwargs={"k": k})
    docs = retriever.get_relevant_documents(query)

    # Deduplicate based on page_content
    seen = set()
    unique_docs = []
    for doc in docs:
        if doc.page_content not in seen:
            seen.add(doc.page_content)
            unique_docs.append(doc)

    print(f"\nUsing vector store: {vector_store_path}")
    print(f"Top {len(unique_docs)} unique chunks retrieved for: '{query}'\n")

    for i, doc in enumerate(unique_docs, 1):
        source = doc.metadata.get("source", "unknown")
        page = doc.metadata.get("page", "N/A")
        print(f"--- Chunk #{i} ---")
        print(f"Source: {source} | Page: {page}")
        preview = doc.page_content[:300]
        if len(doc.page_content) > 300:
            preview += "..."
        print(preview)
        print()


def compare_retrievers(query: str, k: int = 3):
    """Compare results from different vector stores"""
    stores = {
        "MES Manual": "./vector_stores/mes_db",
        "Technical Docs": "./vector_stores/tech_db",
        "General Docs": "./vector_stores/general_db"
    }

    print(f"\n=== Comparing retrievers for: '{query}' ===\n")

    for store_name, store_path in stores.items():
        try:
            print(f"🔍 {store_name}:")
            print("-" * 50)
            test_retriever(query, k=k, vector_store_path=store_path)
            print("\n" + "="*60 + "\n")
        except Exception as e:
            print(f"❌ Could not access {store_name}: {e}\n")


if __name__ == "__main__":
    print("Multi-Vector Store RAG Tester")
    print("\nAvailable commands:")
    print("  - Enter a question to test default store")
    print("  - Type 'mes: <question>' for MES manual")
    print("  - Type 'tech: <question>' for technical docs")
    print("  - Type 'general: <question>' for general docs")
    print("  - Type 'compare: <question>' to compare all stores")
    print("  - Type 'exit' to quit")

    while True:
        user_input = input("\nEnter your question: ").strip()

        if user_input.lower() == "exit":
            break
        elif user_input.lower().startswith("mes: "):
            query = user_input[5:]
            test_retriever(query, vector_store_path="./vector_stores/mes_db")
        elif user_input.lower().startswith("tech: "):
            query = user_input[6:]
            test_retriever(query, vector_store_path="./vector_stores/tech_db")
        elif user_input.lower().startswith("general: "):
            query = user_input[9:]
            test_retriever(
                query, vector_store_path="./vector_stores/general_db")
        elif user_input.lower().startswith("compare: "):
            query = user_input[9:]
            compare_retrievers(query)
        else:
            test_retriever(user_input)  # Default store