from __future__ import annotations

from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from yuxi.channels.adapters.twitch.actions import (
    _build_response,
    describe_message_tool,
    extract_target_from_args,
    get_action_stats,
    handle_action,
    resolve_execution_mode,
    supports_action,
)
from yuxi.channels.models import ChannelType, DeliveryResult
from yuxi.channels.protocols.actions import ActionContext


def make_adapter_mock(**kwargs):
    adapter = MagicMock()
    adapter.channel_type = ChannelType.TWITCH
    adapter.config = kwargs.get("config", {})
    adapter._helix = kwargs.get("_helix", None)
    adapter._bot_user_id = kwargs.get("_bot_user_id", None)
    adapter._outbound_cache = kwargs.get("_outbound_cache", MagicMock())
    adapter._resolve_broadcaster_id = AsyncMock(return_value=kwargs.get("broadcaster_id", "123"))
    adapter._send_via_helix = AsyncMock(return_value=DeliveryResult(success=True))
    adapter.send = AsyncMock(return_value=DeliveryResult(success=True))
    adapter.send_media = AsyncMock(return_value=DeliveryResult(success=True))
    adapter.format_outbound = MagicMock(return_value={"target": "#test_channel"})
    return adapter


def make_ctx(**kwargs):
    action = kwargs.pop("action", "send")
    chat_id = kwargs.pop("chat_id", "#test_channel")
    msg_id = kwargs.pop("msg_id", "msg_test_123")
    args = dict(kwargs)
    if "chat_id" not in args:
        args["chat_id"] = chat_id
    if "msg_id" not in args:
        args["msg_id"] = msg_id
    return ActionContext(
        action=action,
        channel_id="twitch",
        chat_id=chat_id,
        msg_id=msg_id,
        args=args,
    )


class TestBuildResponse:
    def test_builds_response(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send", content="Hello")
        response = _build_response(ctx, adapter)
        assert response is not None
        assert response.content == "Hello"
        assert response.identity.channel_chat_id == "#test_channel"

    def test_returns_none_when_no_chat_id(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send", chat_id="", content="Hello")
        response = _build_response(ctx, adapter)
        assert response is None

    def test_returns_none_when_no_content(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send", chat_id="#test", content="")
        response = _build_response(ctx, adapter)
        assert response is None

    def test_uses_media_url_for_send_media(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send_media", content_key="media_url", chat_id="#test", media_url="http://img.png")
        response = _build_response(ctx, adapter, "media_url")
        assert response is not None
        assert response.content == "http://img.png"


class TestHandleActionSend:
    @pytest.mark.asyncio
    async def test_send_action(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send", content="Hello world")
        result = await handle_action(ctx, adapter)
        assert result.success is True

    @pytest.mark.asyncio
    async def test_send_missing_chat_id(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send", chat_id="", content="Hello")
        result = await handle_action(ctx, adapter)
        assert result.success is False
        assert "chat_id" in result.error

    @pytest.mark.asyncio
    async def test_send_missing_content(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send", chat_id="#test", content="")
        result = await handle_action(ctx, adapter)
        assert result.success is False

    @pytest.mark.asyncio
    async def test_send_via_helix_preferred(self):
        adapter = make_adapter_mock(config={"prefer_helix_send": True})
        adapter._send_via_helix = AsyncMock(return_value=DeliveryResult(success=True))
        ctx = make_ctx(action="send", content="Hello")
        result = await handle_action(ctx, adapter)
        assert result.success is True
        adapter._send_via_helix.assert_called_once()

    @pytest.mark.asyncio
    async def test_send_via_helix_falls_back_to_irc(self):
        adapter = make_adapter_mock(config={"prefer_helix_send": True})
        adapter._send_via_helix = AsyncMock(return_value=DeliveryResult(success=False, error="fail"))
        adapter.send = AsyncMock(return_value=DeliveryResult(success=True))
        ctx = make_ctx(action="send", content="Hello")
        result = await handle_action(ctx, adapter)
        assert result.success is True


class TestHandleActionSendMedia:
    @pytest.mark.asyncio
    async def test_send_media_action(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send_media", media_url="http://img.png")
        result = await handle_action(ctx, adapter)
        assert result.success is True

    @pytest.mark.asyncio
    async def test_send_media_missing_chat_id(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send_media", chat_id="", media_url="http://img.png")
        result = await handle_action(ctx, adapter)
        assert result.success is False

    @pytest.mark.asyncio
    async def test_send_media_missing_url(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send_media", chat_id="#test", media_url="")
        result = await handle_action(ctx, adapter)
        assert result.success is False


class TestHandleActionReply:
    @pytest.mark.asyncio
    async def test_reply_action(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="reply", content="Reply text", reply_to_msg_id="msg123", reply_to_username="user1")
        result = await handle_action(ctx, adapter)
        assert result.success is True
        adapter._send_via_helix.assert_called_once()

    @pytest.mark.asyncio
    async def test_reply_missing_chat_id(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="reply", chat_id="", content="Reply", reply_to_msg_id="msg123")
        result = await handle_action(ctx, adapter)
        assert result.success is False

    @pytest.mark.asyncio
    async def test_reply_missing_content(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="reply", chat_id="#test", content="", reply_to_msg_id="msg123")
        result = await handle_action(ctx, adapter)
        assert result.success is False

    @pytest.mark.asyncio
    async def test_reply_missing_reply_to_msg_id(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="reply", chat_id="#test", content="Reply", reply_to_msg_id="")
        result = await handle_action(ctx, adapter)
        assert result.success is False

    @pytest.mark.asyncio
    async def test_reply_falls_back_to_irc_with_prefix(self):
        adapter = make_adapter_mock()
        adapter._send_via_helix = AsyncMock(return_value=DeliveryResult(success=False, error="fail"))
        adapter.send = AsyncMock(return_value=DeliveryResult(success=True))
        ctx = make_ctx(action="reply", content="Reply text", reply_to_msg_id="msg123", reply_to_username="TestUser")
        result = await handle_action(ctx, adapter)
        assert result.success is True
        assert "@TestUser" in adapter.send.call_args[0][0].content


class TestHandleActionUnsend:
    @pytest.mark.asyncio
    async def test_unsend_action(self):
        adapter = make_adapter_mock(_helix=MagicMock(), _bot_user_id="bot123", broadcaster_id="12345")
        adapter._helix.delete_chat_message = AsyncMock(return_value=True)
        ctx = make_ctx(action="unsend", message_id="msg_delete_123")
        result = await handle_action(ctx, adapter)
        assert result.success is True

    @pytest.mark.asyncio
    async def test_unsend_missing_helix(self):
        adapter = make_adapter_mock(_helix=None)
        ctx = make_ctx(action="unsend", message_id="msg123")
        result = await handle_action(ctx, adapter)
        assert result.success is False

    @pytest.mark.asyncio
    async def test_delete_message_action(self):
        adapter = make_adapter_mock(_helix=MagicMock(), _bot_user_id="bot123", broadcaster_id="12345")
        adapter._helix.delete_chat_message = AsyncMock(return_value=True)
        ctx = make_ctx(action="delete_message", message_id="msg123")
        result = await handle_action(ctx, adapter)
        assert result.success is True

    @pytest.mark.asyncio
    async def test_unsend_no_broadcaster_id(self):
        adapter = make_adapter_mock(_helix=MagicMock(), _bot_user_id="bot123", broadcaster_id=None)
        adapter._resolve_broadcaster_id = AsyncMock(return_value=None)
        adapter._helix.delete_chat_message = AsyncMock(return_value=True)
        ctx = make_ctx(action="unsend", message_id="msg123")
        result = await handle_action(ctx, adapter)
        assert result.success is False
        assert "broadcaster" in result.error

    @pytest.mark.asyncio
    async def test_unsend_no_bot_user_id(self):
        adapter = make_adapter_mock(_helix=MagicMock(), _bot_user_id=None, broadcaster_id="12345")
        adapter._helix.delete_chat_message = AsyncMock(return_value=True)
        ctx = make_ctx(action="unsend", message_id="msg123")
        result = await handle_action(ctx, adapter)
        assert result.success is False
        assert "bot_user_id" in result.error


class TestHandleActionAnnouncement:
    @pytest.mark.asyncio
    async def test_announcement_action(self):
        adapter = make_adapter_mock(_helix=MagicMock(), _bot_user_id="bot123", broadcaster_id="12345")
        adapter._helix.send_chat_announcement = AsyncMock(return_value=True)
        ctx = make_ctx(action="announcement", content="Big news!", color="blue")
        result = await handle_action(ctx, adapter)
        assert result.success is True

    @pytest.mark.asyncio
    async def test_announcement_missing_helix(self):
        adapter = make_adapter_mock(_helix=None)
        ctx = make_ctx(action="announcement", content="News")
        result = await handle_action(ctx, adapter)
        assert result.success is False

    @pytest.mark.asyncio
    async def test_announcement_no_broadcaster_id(self):
        adapter = make_adapter_mock(_helix=MagicMock(), _bot_user_id="bot123", broadcaster_id=None)
        adapter._resolve_broadcaster_id = AsyncMock(return_value=None)
        ctx = make_ctx(action="announcement", content="News")
        result = await handle_action(ctx, adapter)
        assert result.success is False


class TestHandleActionUnsupported:
    @pytest.mark.asyncio
    async def test_edit_action_unsupported(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="edit", content="new content")
        result = await handle_action(ctx, adapter)
        assert result.success is False
        assert "editing" in result.error

    @pytest.mark.asyncio
    async def test_reactions_unsupported(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="send_reaction")
        result = await handle_action(ctx, adapter)
        assert result.success is False
        assert "reactions" in result.error

    @pytest.mark.asyncio
    async def test_polls_unsupported(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="polls")
        result = await handle_action(ctx, adapter)
        assert result.success is False
        assert "polls" in result.error

    @pytest.mark.asyncio
    async def test_unknown_action(self):
        adapter = make_adapter_mock()
        ctx = make_ctx(action="some_random_action")
        result = await handle_action(ctx, adapter)
        assert result.success is False
        assert "unknown action" in result.error


class TestSupportsAction:
    def test_supported_actions(self):
        for action in ("send", "send_media", "reply", "unsend", "delete_message", "announcement"):
            assert supports_action(action) is True

    def test_unsupported_actions(self):
        for action in ("edit", "reactions", "polls", "pin"):
            assert supports_action(action) is False

    def test_unknown_action(self):
        assert supports_action("random_action") is False


class TestDescribeMessageTool:
    def test_returns_dict_with_all_actions(self):
        result = describe_message_tool()
        assert isinstance(result, dict)
        assert "send" in result
        assert "send_media" in result
        assert "reply" in result
        assert "unsend" in result
        assert "delete_message" in result
        assert "announcement" in result

    def test_each_action_has_description(self):
        result = describe_message_tool()
        for action_info in result.values():
            assert "description" in action_info

    def test_each_action_has_parameters(self):
        result = describe_message_tool()
        for action_info in result.values():
            assert "parameters" in action_info


class TestExtractTargetFromArgs:
    def test_extracts_chat_id(self):
        result = extract_target_from_args({"chat_id": "#test_channel"})
        assert result == {"chat_id": "#test_channel"}

    def test_returns_none_when_no_chat_id(self):
        result = extract_target_from_args({"other_key": "value"})
        assert result is None

    def test_returns_none_for_empty_dict(self):
        assert extract_target_from_args({}) is None


class TestResolveExecutionMode:
    def test_always_returns_send(self):
        assert resolve_execution_mode("send") == "send"
        assert resolve_execution_mode("reply") == "send"
        assert resolve_execution_mode("unknown") == "send"


class TestGetActionStats:
    def test_returns_stats_dict(self):
        result = get_action_stats()
        assert "implemented" in result
        assert "planned" in result
        assert "unsupported" in result

    def test_unimplemented_actions_in_unsupported(self):
        result = get_action_stats()
        assert "edit" in result["unsupported"]
        assert "reactions" in result["unsupported"]
        assert "polls" in result["unsupported"]