"""Shared pytest fixtures for backend tests.

All external LLM/ASR calls must be mocked. Use tmp_path for ChromaDB instances.
"""
import pytest
from unittest.mock import AsyncMock, MagicMock


@pytest.fixture
def mock_llm_client(monkeypatch):
    """Mock LLM client to avoid hitting live APIs."""
    class _Mock:
        async def complete(self, prompt: str, temperature: float = 0.7) -> str:  # type: ignore
            return "{\"choices\": [{\"message\": {\"content\": \"mock response\"}}]}"

    return _Mock()


@pytest.fixture
def mock_asr_client(monkeypatch):
    """Mock ASR client to avoid hitting live APIs."""
    class _Mock:
        async def transcribe(self, audio_bytes):  # type: ignore
            return ""

    return _Mock()


@pytest.fixture
def chroma_test_dir(tmp_path):
    """Provide a temporary directory for isolated ChromaDB instances."""
    return tmp_path / "chroma_test"