"""Tests for the conversation component."""

from collections.abc import AsyncGenerator
from dataclasses import dataclass, field
from typing import Literal
from unittest.mock import patch

import pytest

from homeassistant.components import conversation
from homeassistant.components.conversation.models import (
    ConversationInput,
    ConversationResult,
)
from homeassistant.components.homeassistant.exposed_entities import (
    DATA_EXPOSED_ENTITIES,
    async_expose_entity,
)
from homeassistant.core import HomeAssistant
from homeassistant.helpers import chat_session, intent


class MockAgent(conversation.AbstractConversationAgent):
    """Test Agent."""

    def __init__(
        self, agent_id: str, supported_languages: list[str] | Literal["*"]
    ) -> None:
        """Initialize the agent."""
        self.agent_id = agent_id
        self.calls = []
        self.response = "Test response"
        self._supported_languages = supported_languages

    @property
    def supported_languages(self) -> list[str]:
        """Return a list of supported languages."""
        return self._supported_languages

    async def async_process(self, user_input: ConversationInput) -> ConversationResult:
        """Process some text."""
        self.calls.append(user_input)
        response = intent.IntentResponse(language=user_input.language)
        response.async_set_speech(self.response)
        return ConversationResult(
            response=response, conversation_id=user_input.conversation_id
        )


@pytest.fixture
async def mock_chat_log(hass: HomeAssistant) -> AsyncGenerator[MockChatLog]:
    """Return mock chat logs."""
    # pylint: disable-next=contextmanager-generator-missing-cleanup
    with (
        patch(
            "homeassistant.components.conversation.chat_log.ChatLog",
            MockChatLog,
        ),
        chat_session.async_get_chat_session(hass, "mock-conversation-id") as session,
        conversation.async_get_chat_log(hass, session) as chat_log,
    ):
        yield chat_log


@dataclass
class MockChatLog(conversation.ChatLog):
    """Mock chat log."""

    _mock_tool_results: dict = field(default_factory=dict)

    def mock_tool_results(self, results: dict) -> None:
        """Set tool results."""
        self._mock_tool_results = results

    @property
    def llm_api(self):
        """Return LLM API."""
        return self._llm_api

    @llm_api.setter
    def llm_api(self, value):
        """Set LLM API."""
        self._llm_api = value

        if not value:
            return

        async def async_call_tool(tool_input):
            """Call tool."""
            if tool_input.id not in self._mock_tool_results:
                raise ValueError(f"Tool {tool_input.id} not found")
            return self._mock_tool_results[tool_input.id]

        self._llm_api.async_call_tool = async_call_tool


def expose_new(hass: HomeAssistant, expose_new: bool) -> None:
    """Enable exposing new entities to the default agent."""
    exposed_entities = hass.data[DATA_EXPOSED_ENTITIES]
    exposed_entities.async_set_expose_new_entities(conversation.DOMAIN, expose_new)


def expose_entity(hass: HomeAssistant, entity_id: str, should_expose: bool) -> None:
    """Expose an entity to the default agent."""
    async_expose_entity(hass, conversation.DOMAIN, entity_id, should_expose)