from unittest.mock import Mock, AsyncMock, patch

import pytest
from discord.ext import commands

from bot import Music


@pytest.mark.asyncio
async def test_bot_ensure_voice(bot, ctx):
  mbot = Music(bot)

  # 1. Inside a voice channel
  # 1.1 Does not call stop if no sound is playing
  ctx.voice_client.is_playing.return_value = False
  await mbot.ensure_voice(ctx)
  assert ctx.voice_client.stop.call_count == 0
  ctx.reset_mock(return_value=True)

  # 1.2 Does call stop if sound is playing
  ctx.voice_client.is_playing.return_value = True
  await mbot.ensure_voice(ctx)
  assert ctx.voice_client.stop.call_count == 1
  ctx.reset_mock(return_value=True)

  # 2. Not inside a voice channel
  # 2.1 Connects to voice channel of author if possible
  ctx.voice_client = None
  ctx.author.voice = AsyncMock()
  await mbot.ensure_voice(ctx)
  assert ctx.author.voice.channel.connect.call_count == 1
  ctx.reset_mock(return_value=True)

  # 2.2 Error if author not inside a channel
  ctx.voice_client = None
  ctx.author.voice = None
  with pytest.raises(commands.CommandError):
    await mbot.ensure_voice(ctx)


@pytest.mark.asyncio
async def test_bot_stream(bot, ctx):
  mbot = Music(bot)

  with patch('bot.YTDLSource', new_callable=AsyncMock) as ytdl_source:
    player = Mock()
    ytdl_source.from_url.return_value = player
    url = 'A Day To Remember - All I Want'
    # pylint: disable=too-many-function-args
    await mbot.stream(mbot, ctx, url=url)
    assert ytdl_source.from_url.await_args.args == (url,)
    assert ytdl_source.from_url.await_args.kwargs == {"loop": bot.loop, "stream": True}
    assert ctx.voice_client.play.call_args.args == (player,)
    assert ctx.send.call_count == 1