"""Tests for rest command."""

from unittest.mock import AsyncMock, MagicMock

import pytest

import mudlib.commands.movement as movement_mod
from mudlib.commands.rest import cmd_rest
from mudlib.player import Player, players
from mudlib.resting import process_resting


@pytest.fixture(autouse=True)
def clear_state():
    """Clear players before and after each test."""
    players.clear()
    yield
    players.clear()


@pytest.fixture(autouse=True)
def mock_world():
    """Inject a mock world for send_nearby_message."""
    fake_world = MagicMock()
    fake_world.width = 256
    fake_world.height = 256
    old = movement_mod.world
    movement_mod.world = fake_world
    yield fake_world
    movement_mod.world = old


@pytest.fixture
def mock_writer():
    writer = MagicMock()
    writer.write = MagicMock()
    writer.drain = AsyncMock()
    return writer


@pytest.fixture
def mock_reader():
    return MagicMock()


@pytest.fixture
def player(mock_reader, mock_writer):
    p = Player(name="Goku", x=0, y=0, reader=mock_reader, writer=mock_writer)
    players[p.name] = p
    return p


@pytest.fixture
def nearby_player(mock_reader, mock_writer):
    p = Player(name="Vegeta", x=0, y=0, reader=mock_reader, writer=mock_writer)
    players[p.name] = p
    return p


@pytest.mark.asyncio
async def test_rest_when_full_sends_not_tired_message(player):
    """Test resting when at full stamina sends 'not tired' message."""
    player.stamina = 100.0
    player.max_stamina = 100.0

    await cmd_rest(player, "")

    player.writer.write.assert_called_once_with("You're not tired.\r\n")
    assert player.stamina == 100.0
    assert not player.resting


@pytest.mark.asyncio
async def test_rest_when_not_resting_starts_resting(player):
    """Test rest command when not resting starts the resting state."""
    player.stamina = 50.0
    player.max_stamina = 100.0
    player.resting = False

    await cmd_rest(player, "")

    assert player.resting
    messages = [call[0][0] for call in player.writer.write.call_args_list]
    assert any("begin to rest" in msg for msg in messages)


@pytest.mark.asyncio
async def test_rest_when_already_resting_stops_resting(player):
    """Test rest command when already resting stops the resting state."""
    player.stamina = 50.0
    player.max_stamina = 100.0
    player.resting = True

    await cmd_rest(player, "")

    assert not player.resting
    messages = [call[0][0] for call in player.writer.write.call_args_list]
    assert any("stop resting" in msg for msg in messages)


@pytest.mark.asyncio
async def test_rest_broadcasts_begin_to_nearby_players(player, nearby_player):
    """Test resting broadcasts begin message to nearby players."""
    player.stamina = 50.0
    player.resting = False

    await cmd_rest(player, "")

    nearby_messages = [call[0][0] for call in nearby_player.writer.write.call_args_list]
    assert any("Goku begins to rest" in msg for msg in nearby_messages)


@pytest.mark.asyncio
async def test_rest_broadcasts_stop_to_nearby_players(player, nearby_player):
    """Test stopping rest broadcasts stop message to nearby players."""
    player.stamina = 50.0
    player.resting = True

    await cmd_rest(player, "")

    nearby_messages = [call[0][0] for call in nearby_player.writer.write.call_args_list]
    assert any("Goku stops resting" in msg for msg in nearby_messages)


@pytest.mark.asyncio
async def test_process_resting_ticks_up_stamina(player):
    """Test process_resting increases stamina for resting players."""
    player.stamina = 50.0
    player.max_stamina = 100.0
    player.resting = True

    await process_resting()

    assert player.stamina == 50.2  # 50 + 0.2 per tick


@pytest.mark.asyncio
async def test_process_resting_auto_stops_when_full(player):
    """Test process_resting auto-stops resting when stamina reaches max."""
    player.stamina = 99.9
    player.max_stamina = 100.0
    player.resting = True

    await process_resting()

    assert player.stamina == 100.0
    assert not player.resting
    messages = [call[0][0] for call in player.writer.write.call_args_list]
    assert any("fully rested" in msg for msg in messages)


@pytest.mark.asyncio
async def test_process_resting_broadcasts_when_auto_stopping(player, nearby_player):
    """Test process_resting broadcasts when auto-stopping rest."""
    player.stamina = 99.9
    player.max_stamina = 100.0
    player.resting = True

    await process_resting()

    nearby_messages = [call[0][0] for call in nearby_player.writer.write.call_args_list]
    assert any("Goku stops resting" in msg for msg in nearby_messages)


@pytest.mark.asyncio
async def test_process_resting_ignores_non_resting_players(player):
    """Test process_resting doesn't modify stamina for non-resting players."""
    player.stamina = 50.0
    player.max_stamina = 100.0
    player.resting = False

    await process_resting()

    assert player.stamina == 50.0  # unchanged


@pytest.mark.asyncio
async def test_stamina_doesnt_exceed_max(player):
    """Test stamina doesn't exceed max_stamina during resting."""
    player.stamina = 99.95
    player.max_stamina = 100.0
    player.resting = True

    await process_resting()

    assert player.stamina == 100.0  # capped at max