"""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"


@pytest.fixture
def mock_prompt_service():
    """Mock PromptService for tests that don't need real DB."""
    class _MockPromptService:
        def __init__(self):
            self._template = "Test template: {question}"

        def get_active_profile_name(self) -> str:
            return "A"

        def get_prompt_template(self, step: str) -> str:
            return self._template

        def list_profiles(self) -> list[dict]:
            return [
                {"name": "A", "is_active": True},
                {"name": "B", "is_active": False},
                {"name": "C", "is_active": False},
            ]

        def activate_profile(self, name: str) -> None:
            pass

        def get_profile_prompts(self, name: str) -> dict:
            return {"decompose": self._template, "filter": self._template, "generate": self._template}

        def update_prompt(self, name: str, step: str, template: str) -> None:
            pass

        def update_all_prompts(self, name: str, prompts: dict[str, str]) -> None:
            pass

        def reset_to_defaults(self, name: str, step: str | None = None) -> None:
            pass

    return _MockPromptService()