"""Тесты для bot.TextHelpCommand — текстовая справка по командам."""

import sys
from pathlib import Path
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

ROOT_DIR = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(ROOT_DIR))


@pytest.fixture
def help_command() -> "bot.TextHelpCommand":
    """Создать экземпляр TextHelpCommand."""
    import bot
    return bot.TextHelpCommand()


class TestGetCommandSignature:
    """Тесты get_command_signature."""

    def test_simple_command_no_signature(self, help_command) -> None:
        """Команда без параметров."""
        cmd = MagicMock()
        cmd.qualified_name = "pg"
        cmd.signature = ""
        result = help_command.get_command_signature(cmd)
        assert result == "!pg "

    def test_command_with_signature(self, help_command) -> None:
        """Команда с параметрами."""
        cmd = MagicMock()
        cmd.qualified_name = "search"
        cmd.signature = "<query>"
        result = help_command.get_command_signature(cmd)
        assert result == "!search <query>"

    def test_group_command(self, help_command) -> None:
        """Групповая команда."""
        cmd = MagicMock()
        cmd.qualified_name = "mod ban"
        cmd.signature = "<user>"
        result = help_command.get_command_signature(cmd)
        assert result == "!mod ban <user>"


class TestSendBotHelp:
    """Тесты send_bot_help."""

    @pytest.mark.asyncio
    async def test_send_bot_help_shows_commands(self, help_command) -> None:
        """Должен показать список команд по когам."""
        cmd = MagicMock()
        cmd.name = "pg"
        cmd.hidden = False
        cmd.short_doc = "Прогноз погоды"

        cog = MagicMock()
        cog.qualified_name = "Pg"

        destination = MagicMock()
        destination.send = AsyncMock(return_value=None)

        with patch.object(help_command, "get_destination", return_value=destination):
            mapping = {cog: [cmd], None: []}
            await help_command.send_bot_help(mapping)

        destination.send.assert_awaited_once()
        message = destination.send.call_args[0][0]
        assert "Доступные команды:" in message
        assert "!pg - Прогноз погоды" in message
        assert "!<название команды>" in message

    @pytest.mark.asyncio
    async def test_send_bot_help_skips_hidden(self, help_command) -> None:
        """Скрытые команды не должны показываться."""
        cmd = MagicMock()
        cmd.name = "hidden_cmd"
        cmd.hidden = True
        cmd.short_doc = "Скрытая"

        cog = MagicMock()

        destination = MagicMock()
        destination.send = AsyncMock(return_value=None)

        with patch.object(help_command, "get_destination", return_value=destination):
            mapping = {cog: [cmd]}
            await help_command.send_bot_help(mapping)

        destination.send.assert_awaited_once()
        message = destination.send.call_args[0][0]
        assert "hidden_cmd" not in message

    @pytest.mark.asyncio
    async def test_send_bot_help_skips_none_cog(self, help_command) -> None:
        """Команды без cog (None) должны пропускаться."""
        cmd = MagicMock()
        cmd.name = "built_in"
        cmd.hidden = False
        cmd.short_doc = "Встроенная"

        destination = MagicMock()
        destination.send = AsyncMock(return_value=None)

        with patch.object(help_command, "get_destination", return_value=destination):
            mapping = {None: [cmd]}
            await help_command.send_bot_help(mapping)

        destination.send.assert_awaited_once()
        message = destination.send.call_args[0][0]
        assert "built_in" not in message

    @pytest.mark.asyncio
    async def test_send_bot_help_empty_doc(self, help_command) -> None:
        """Команда без doc -> пустая строка описания."""
        cmd = MagicMock()
        cmd.name = "cat"
        cmd.hidden = False
        cmd.short_doc = ""

        cog = MagicMock()
        destination = MagicMock()
        destination.send = AsyncMock(return_value=None)

        with patch.object(help_command, "get_destination", return_value=destination):
            mapping = {cog: [cmd]}
            await help_command.send_bot_help(mapping)

        message = destination.send.call_args[0][0]
        assert "!cat - " in message


class TestSendCommandHelp:
    """Тесты send_command_help."""

    @pytest.mark.asyncio
    async def test_send_command_help_basic(self, help_command) -> None:
        """Базовая справка по команде."""
        cmd = MagicMock()
        cmd.qualified_name = "pg"
        cmd.signature = ""
        cmd.doc = "Прогноз погоды"
        cmd.short_doc = "Прогноз погоды"
        cmd.aliases = []

        destination = MagicMock()
        destination.send = AsyncMock(return_value=None)

        with patch.object(help_command, "get_destination", return_value=destination):
            await help_command.send_command_help(cmd)

        message = destination.send.call_args[0][0]
        assert "!pg " in message
        assert "Прогноз погоды" in message

    @pytest.mark.asyncio
    async def test_send_command_help_with_aliases(self, help_command) -> None:
        """Команда с алиасами."""
        cmd = MagicMock()
        cmd.qualified_name = "pg"
        cmd.signature = ""
        cmd.doc = "Погода"
        cmd.short_doc = "Погода"
        cmd.aliases = ["weather", "w"]

        destination = MagicMock()
        destination.send = AsyncMock(return_value=None)

        with patch.object(help_command, "get_destination", return_value=destination):
            await help_command.send_command_help(cmd)

        message = destination.send.call_args[0][0]
        assert "!weather, !w" in message


class TestSendCogHelp:
    """Тесты send_cog_help."""

    @pytest.mark.asyncio
    async def test_send_cog_help(self, help_command) -> None:
        """Справка по когу."""
        cmd = MagicMock()
        cmd.name = "pg"
        cmd.hidden = False
        cmd.short_doc = "Погода"

        cog = MagicMock()
        cog.qualified_name = "Pg"
        cog.get_commands.return_value = [cmd]

        destination = MagicMock()
        destination.send = AsyncMock(return_value=None)

        with patch.object(help_command, "get_destination", return_value=destination):
            await help_command.send_cog_help(cog)

        message = destination.send.call_args[0][0]
        assert "[Pg]:" in message
        assert "!pg - Погода" in message


class TestSendErrorMessage:
    """Тесты send_error_message."""

    @pytest.mark.asyncio
    async def test_send_error_message(self, help_command) -> None:
        """Сообщение об ошибке."""
        destination = MagicMock()
        destination.send = AsyncMock(return_value=None)

        with patch.object(help_command, "get_destination", return_value=destination):
            await help_command.send_error_message("Command not found")

        destination.send.assert_awaited_once_with("Command not found")