"""Dummy langchain_ollama module for local testing.

This module provides minimal stub classes to satisfy imports in main.py
without requiring the actual langchain-ollama package.
"""

class ChatOllama:
    def __init__(self, *args, **kwargs):
        pass

    def invoke(self, *args, **kwargs):
        return "<chat response>"

class OllamaEmbeddings:
    def __init__(self, *args, **kwargs):
        pass

    def embed_documents(self, documents):
        # Return dummy embeddings (list of zeros)
        return [[0.0] * 768 for _ in documents]

    def embed_query(self, query):
        return [0.0] * 768