from __future__ import annotations

from unittest.mock import MagicMock

import pytest

from yuxi.channels.adapters.wechat.session import (
    build_session_route,
    get_session_metadata,
    resolve_chat_type,
)
from yuxi.channels.models import (
    ChannelIdentity,
    ChannelMessage,
    ChannelType,
    ChatType,
    EventType,
    MessageType,
)


def _make_message(chat_type="direct", wechat_mode="personal", channel_user_id="u1", channel_chat_id="") -> ChannelMessage:
    return ChannelMessage(
        identity=ChannelIdentity(
            channel_id="wechat_test",
            channel_type=ChannelType.WECHAT,
            channel_user_id=channel_user_id,
            channel_chat_id=channel_chat_id,
        ),
        content="test",
        chat_type=ChatType.DIRECT if chat_type == "direct" else ChatType.GROUP,
        metadata={"wechat_mode": wechat_mode, "chat_type": chat_type},
    )


class TestBuildSessionRoute:
    def test_direct_personal_route(self):
        msg = _make_message(chat_type="direct", wechat_mode="personal", channel_user_id="user001")
        route = build_session_route(msg, "1")
        assert route == "agent:1:wechat:personal:direct:user001"

    def test_direct_wecom_route(self):
        msg = _make_message(chat_type="direct", wechat_mode="wecom", channel_user_id="u_wecom")
        route = build_session_route(msg, "5")
        assert route == "agent:5:wechat:wecom:direct:u_wecom"

    def test_group_personal_route(self):
        msg = _make_message(chat_type="group", wechat_mode="personal", channel_chat_id="group789")
        route = build_session_route(msg, "2")
        assert route == "agent:2:wechat:personal:group:group789"

    def test_group_wecom_route(self):
        msg = _make_message(chat_type="group", wechat_mode="wecom", channel_chat_id="ww_group")
        route = build_session_route(msg, "3")
        assert route == "agent:3:wechat:wecom:group:ww_group"

    def test_custom_default_agent(self):
        msg = _make_message(channel_user_id="test_user")
        route = build_session_route(msg, "42")
        assert route.startswith("agent:42:")

    def test_mp_mode_route(self):
        msg = _make_message(chat_type="direct", wechat_mode="mp", channel_user_id="openid_123")
        route = build_session_route(msg, "1")
        assert route == "agent:1:wechat:mp:direct:openid_123"


class TestGetSessionMetadata:
    def test_basic_metadata(self):
        msg = _make_message(
            chat_type="direct",
            wechat_mode="personal",
            channel_user_id="u1",
            channel_chat_id="c1",
        )
        meta = get_session_metadata(msg)
        assert meta["chat_type"] == "direct"
        assert meta["wechat_mode"] == "personal"
        assert meta["channel_user_id"] == "u1"
        assert meta["channel_chat_id"] == "c1"

    def test_group_metadata(self):
        msg = _make_message(
            chat_type="group",
            wechat_mode="wecom",
            channel_user_id="u2",
            channel_chat_id="g999",
        )
        meta = get_session_metadata(msg)
        assert meta["chat_type"] == "group"
        assert meta["wechat_mode"] == "wecom"

    def test_metadata_defaults(self):
        msg = ChannelMessage(
            identity=ChannelIdentity(
                channel_id="wechat_test",
                channel_type=ChannelType.WECHAT,
                channel_user_id="u",
                channel_chat_id="",
            ),
            content="test",
            metadata={},
        )
        meta = get_session_metadata(msg)
        assert meta["chat_type"] == "direct"
        assert meta["wechat_mode"] == "personal"


class TestResolveChatType:
    def test_direct_chat_type(self):
        msg = _make_message(chat_type="direct")
        assert resolve_chat_type(msg) == ChatType.DIRECT

    def test_group_chat_type(self):
        msg = _make_message(chat_type="group")
        assert resolve_chat_type(msg) == ChatType.GROUP

    def test_unknown_defaults_to_direct(self):
        msg = ChannelMessage(
            identity=ChannelIdentity(
                channel_id="wechat_test",
                channel_type=ChannelType.WECHAT,
                channel_user_id="u",
                channel_chat_id="",
            ),
            content="test",
            metadata={},
        )
        assert resolve_chat_type(msg) == ChatType.DIRECT