import pytest
from unittest.mock import AsyncMock, patch, MagicMock, mock_open
import os
from cogs.qr import QR
from tests.conftest import MockApplicationContext


@pytest.fixture
def qr_cog(bot):
    cog = QR(bot)
    return cog


@pytest.fixture
def mock_temp_file():
    with patch('tempfile.NamedTemporaryFile') as mock:
        mock_file = MagicMock()
        mock_file.name = "/tmp/test_qr.png"
        mock.return_value = mock_file
        yield mock_file


@pytest.mark.asyncio
async def test_qr_generate_success(qr_cog, mock_channel, mock_guild, bot, mock_temp_file):
    ctx = MockApplicationContext(bot=bot, channel=mock_channel, guild=mock_guild)

    with patch('cogs.qr.QR._generate_qr') as mock_generate:
        with patch.object(ctx, 'respond', new_callable=AsyncMock) as mock_respond:
            with patch('os.path.exists', return_value=True):
                with patch('os.unlink'):
                    await qr_cog.qr.callback(qr_cog, ctx, text="https://example.com")
                    mock_generate.assert_called_once()
                    mock_respond.assert_called_once()


@pytest.mark.asyncio
async def test_qr_generate_empty_text(qr_cog, mock_channel, mock_guild, bot):
    ctx = MockApplicationContext(bot=bot, channel=mock_channel, guild=mock_guild)

    with patch('cogs.qr.QR._generate_qr'):
        with patch.object(ctx, 'respond', new_callable=AsyncMock) as mock_respond:
            with patch('os.path.exists', return_value=False):
                await qr_cog.qr.callback(qr_cog, ctx, text="")
                mock_respond.assert_called_once()


@pytest.mark.asyncio
async def test_qr_decode_not_available(qr_cog, mock_channel, mock_guild, bot):
    ctx = MockApplicationContext(bot=bot, channel=mock_channel, guild=mock_guild)

    mock_attachment = MagicMock()
    mock_attachment.url = "https://example.com/qr.png"

    with patch('cogs.qr._ensure_qr', return_value=False):
        with patch.object(ctx, 'respond', new_callable=AsyncMock) as mock_respond:
            await qr_cog.decode.callback(qr_cog, ctx, image=mock_attachment)
            mock_respond.assert_called_once()
            args = mock_respond.call_args
            assert "nie jest dostępne" in str(args) or "not available" in str(args).lower()


@pytest.mark.asyncio
async def test_qr_decode_download_failure(qr_cog, mock_channel, mock_guild, bot):
    ctx = MockApplicationContext(bot=bot, channel=mock_channel, guild=mock_guild)

    mock_attachment = MagicMock()
    mock_attachment.url = "https://example.com/qr.png"

    with patch('cogs.qr._ensure_qr', return_value=True):
        with patch.object(qr_cog, '_download_image', return_value=None):
            with patch.object(ctx, 'respond', new_callable=AsyncMock) as mock_respond:
                await qr_cog.decode.callback(qr_cog, ctx, image=mock_attachment)
                mock_respond.assert_called_once()
                args = mock_respond.call_args
                assert "Nie udało się" in str(args) or "failed" in str(args).lower()