from __future__ import annotations

from pathlib import Path

import pytest

from adapter.matrix.bot import build_runtime
from adapter.matrix.agent_registry import AgentDefinition, AgentRegistry
from adapter.matrix.handlers.agent import make_handle_agent
from adapter.matrix.store import get_room_meta, get_selected_agent_id, set_selected_agent_id, set_room_meta
from core.chat import ChatManager
from core.protocol import IncomingCommand, OutgoingMessage
from core.settings import SettingsManager
from core.store import InMemoryStore
from sdk.mock import MockPlatformClient


def _registry() -> AgentRegistry:
    return AgentRegistry(
        [
            AgentDefinition(agent_id="agent-1", label="Analyst"),
            AgentDefinition(agent_id="agent-2", label="Research"),
        ]
    )


async def test_agent_command_lists_available_agents_with_selected_marker():
    store = InMemoryStore()
    await set_selected_agent_id(store, "@alice:example.org", "agent-2")
    handler = make_handle_agent(store, _registry())

    result = await handler(
        event=IncomingCommand(
            user_id="@alice:example.org",
            platform="matrix",
            chat_id="C1",
            command="agent",
        ),
        auth_mgr=None,
        platform=MockPlatformClient(),
        chat_mgr=ChatManager(None, store),
        settings_mgr=SettingsManager(MockPlatformClient(), store),
    )

    assert result == [
        OutgoingMessage(
            chat_id="C1",
            text=(
                "Доступные агенты:\n"
                "1. Analyst\n"
                "2. Research [текущий]\n"
                "\n"
                "Выбери агент: !agent <номер>"
            ),
        )
    ]


async def test_agent_command_persists_selected_agent_id():
    store = InMemoryStore()
    handler = make_handle_agent(store, _registry())

    result = await handler(
        event=IncomingCommand(
            user_id="@alice:example.org",
            platform="matrix",
            chat_id="C1",
            command="agent",
            args=["2"],
        ),
        auth_mgr=None,
        platform=MockPlatformClient(),
        chat_mgr=ChatManager(None, store),
        settings_mgr=SettingsManager(MockPlatformClient(), store),
    )

    assert await get_selected_agent_id(store, "@alice:example.org") == "agent-2"
    assert result == [
        OutgoingMessage(
            chat_id="C1",
            text="Агент переключен на Research. Продолжай через !new.",
        )
    ]


async def test_agent_command_binds_existing_unbound_room_to_selected_agent():
    store = InMemoryStore()
    chat_mgr = ChatManager(None, store)
    await chat_mgr.get_or_create(
        user_id="@alice:example.org",
        chat_id="C1",
        platform="matrix",
        surface_ref="!room:example.org",
        name="Research",
    )
    await set_room_meta(
        store,
        "!room:example.org",
        {
            "chat_id": "C1",
            "matrix_user_id": "@alice:example.org",
            "display_name": "Research",
        },
    )
    handler = make_handle_agent(store, _registry())

    result = await handler(
        event=IncomingCommand(
            user_id="@alice:example.org",
            platform="matrix",
            chat_id="C1",
            command="agent",
            args=["1"],
        ),
        auth_mgr=None,
        platform=MockPlatformClient(),
        chat_mgr=chat_mgr,
        settings_mgr=SettingsManager(MockPlatformClient(), store),
    )

    assert await get_selected_agent_id(store, "@alice:example.org") == "agent-1"
    assert await get_room_meta(store, "!room:example.org") == {
        "chat_id": "C1",
        "matrix_user_id": "@alice:example.org",
        "display_name": "Research",
        "agent_id": "agent-1",
        "platform_chat_id": "1",
    }
    assert result == [
        OutgoingMessage(
            chat_id="C1",
            text="Агент Analyst выбран. Текущий чат готов к работе.",
        )
    ]


@pytest.mark.asyncio
async def test_build_runtime_registers_agent_handler_when_registry_is_configured(
    monkeypatch: pytest.MonkeyPatch,
    tmp_path: Path,
):
    registry_path = tmp_path / "matrix-agents.yaml"
    registry_path.write_text(
        "agents:\n"
        "  - id: agent-1\n"
        "    label: Analyst\n"
        "  - id: agent-2\n"
        "    label: Research\n",
        encoding="utf-8",
    )
    monkeypatch.setenv("MATRIX_AGENT_REGISTRY_PATH", str(registry_path))

    runtime = build_runtime(platform=MockPlatformClient())

    result = await runtime.dispatcher.dispatch(
        IncomingCommand(
            user_id="@alice:example.org",
            platform="matrix",
            chat_id="C1",
            command="agent",
        )
    )

    assert result == [
        OutgoingMessage(
            chat_id="C1",
            text=(
                "Доступные агенты:\n"
                "1. Analyst\n"
                "2. Research\n"
                "\n"
                "Выбери агент: !agent <номер>"
            ),
        )
    ]