"""Tests for PPT_longPic function."""

import pytest
from pathlib import Path
from unittest.mock import Mock, MagicMock, patch
from PIL import Image
from pptopic.lib import PPT_longPic


class TestPPTLongPic:
    """Test PPT_longPic function."""

    @patch('pptopic.lib.convertPPT')
    def test_ppt_longpic_with_save_name(self, mock_convert_ppt, tmp_path):
        """Test PPT_longPic with saveName parameter."""
        ppt_file = tmp_path / "test.pptx"
        ppt_file.touch()
        
        mock_ppt = MagicMock()
        mock_convert_ppt.return_value.__enter__.return_value = mock_ppt
        
        with patch('pptopic.lib.Path.glob') as mock_glob:
            mock_img_path = MagicMock()
            mock_img_path.suffix = '.jpg'
            mock_glob.return_value = [mock_img_path]
            
            with patch('pptopic.lib.Image.open') as mock_open:
                mock_img = MagicMock()
                mock_img.mode = 'RGB'
                mock_img.width = 100
                mock_img.height = 100
                mock_img.resize.return_value = mock_img
                mock_open.return_value.__enter__.return_value = mock_img
                
                with patch('pptopic.lib.Image.new') as mock_new:
                    mock_canvas = MagicMock()
                    mock_new.return_value = mock_canvas
                    
                    PPT_longPic(ppt_file, saveName="output.jpg", saveto=tmp_path)
                    
                    mock_canvas.save.assert_called_once()

    @patch('pptopic.lib.convertPPT')
    def test_ppt_longpic_without_save_name(self, mock_convert_ppt, tmp_path):
        """Test PPT_longPic without saveName uses default JPG."""
        ppt_file = tmp_path / "test.pptx"
        ppt_file.touch()
        
        mock_ppt = MagicMock()
        mock_convert_ppt.return_value.__enter__.return_value = mock_ppt
        
        with patch('pptopic.lib.Path.glob') as mock_glob:
            mock_img_path = MagicMock()
            mock_img_path.suffix = '.jpg'
            mock_glob.return_value = [mock_img_path]
            
            with patch('pptopic.lib.Image.open') as mock_open:
                mock_img = MagicMock()
                mock_img.mode = 'RGB'
                mock_img.width = 100
                mock_img.height = 100
                mock_img.resize.return_value = mock_img
                mock_open.return_value.__enter__.return_value = mock_img
                
                with patch('pptopic.lib.Image.new') as mock_new:
                    mock_canvas = MagicMock()
                    mock_new.return_value = mock_canvas
                    
                    PPT_longPic(ppt_file, saveto=tmp_path)
                    
                    mock_canvas.save.assert_called_once()

    def test_ppt_longpic_invalid_image_type(self, tmp_path):
        """Test PPT_longPic with invalid image type raises ValueError."""
        ppt_file = tmp_path / "test.pptx"
        ppt_file.touch()
        
        with pytest.raises(ValueError, match="Unable to save this type"):
            PPT_longPic(ppt_file, saveName="output.bmp")

    @patch('pptopic.lib.convertPPT')
    def test_ppt_longpic_no_images_generated(self, mock_convert_ppt, tmp_path):
        """Test PPT_longPic when no images are generated raises ValueError."""
        ppt_file = tmp_path / "test.pptx"
        ppt_file.touch()
        
        mock_ppt = MagicMock()
        mock_convert_ppt.return_value.__enter__.return_value = mock_ppt
        
        with patch('pptopic.lib.Path.glob', return_value=[]):
            with pytest.raises(ValueError, match="No images generated"):
                PPT_longPic(ppt_file)

    @patch('pptopic.lib.convertPPT')
    def test_ppt_longpic_with_percentage_width(self, mock_convert_ppt, tmp_path):
        """Test PPT_longPic with percentage width string."""
        ppt_file = tmp_path / "test.pptx"
        ppt_file.touch()
        
        mock_ppt = MagicMock()
        mock_convert_ppt.return_value.__enter__.return_value = mock_ppt
        
        with patch('pptopic.lib.Path.glob') as mock_glob:
            mock_img_path = MagicMock()
            mock_img_path.suffix = '.jpg'
            mock_glob.return_value = [mock_img_path]
            
            with patch('pptopic.lib.Image.open') as mock_open:
                mock_img = MagicMock()
                mock_img.mode = 'RGB'
                mock_img.width = 100
                mock_img.height = 100
                mock_img.resize.return_value = mock_img
                mock_open.return_value.__enter__.return_value = mock_img
                
                with patch('pptopic.lib.Image.new') as mock_new:
                    mock_canvas = MagicMock()
                    mock_new.return_value = mock_canvas
                    
                    PPT_longPic(ppt_file, width="50%", saveto=tmp_path)
                    
                    mock_new.assert_called_once()

    @patch('pptopic.lib.convertPPT')
    def test_ppt_longpic_with_pixel_width(self, mock_convert_ppt, tmp_path):
        """Test PPT_longPic with pixel width."""
        ppt_file = tmp_path / "test.pptx"
        ppt_file.touch()
        
        mock_ppt = MagicMock()
        mock_convert_ppt.return_value.__enter__.return_value = mock_ppt
        
        with patch('pptopic.lib.Path.glob') as mock_glob:
            mock_img_path = MagicMock()
            mock_img_path.suffix = '.jpg'
            mock_glob.return_value = [mock_img_path]
            
            with patch('pptopic.lib.Image.open') as mock_open:
                mock_img = MagicMock()
                mock_img.mode = 'RGB'
                mock_img.width = 100
                mock_img.height = 100
                mock_img.resize.return_value = mock_img
                mock_open.return_value.__enter__.return_value = mock_img
                
                with patch('pptopic.lib.Image.new') as mock_new:
                    mock_canvas = MagicMock()
                    mock_new.return_value = mock_canvas
                    
                    PPT_longPic(ppt_file, width=50, saveto=tmp_path)
                    
                    mock_new.assert_called_once()

    @patch('pptopic.lib.convertPPT')
    def test_ppt_longpic_with_none_width(self, mock_convert_ppt, tmp_path):
        """Test PPT_longPic with None width (no scaling)."""
        ppt_file = tmp_path / "test.pptx"
        ppt_file.touch()
        
        mock_ppt = MagicMock()
        mock_convert_ppt.return_value.__enter__.return_value = mock_ppt
        
        with patch('pptopic.lib.Path.glob') as mock_glob:
            mock_img_path = MagicMock()
            mock_img_path.suffix = '.jpg'
            mock_glob.return_value = [mock_img_path]
            
            with patch('pptopic.lib.Image.open') as mock_open:
                mock_img = MagicMock()
                mock_img.mode = 'RGB'
                mock_img.width = 100
                mock_img.height = 100
                mock_img.resize.return_value = mock_img
                mock_open.return_value.__enter__.return_value = mock_img
                
                with patch('pptopic.lib.Image.new') as mock_new:
                    mock_canvas = MagicMock()
                    mock_new.return_value = mock_canvas
                    
                    PPT_longPic(ppt_file, width=None, saveto=tmp_path)
                    
                    mock_new.assert_called_once()

    @patch('pptopic.lib.convertPPT')
    def test_ppt_longpic_save_to_current_dir(self, mock_convert_ppt, tmp_path):
        """Test PPT_longPic saving to current directory."""
        ppt_file = tmp_path / "test.pptx"
        ppt_file.touch()
        
        mock_ppt = MagicMock()
        mock_convert_ppt.return_value.__enter__.return_value = mock_ppt
        
        with patch('pptopic.lib.Path.glob') as mock_glob:
            mock_img_path = MagicMock()
            mock_img_path.suffix = '.jpg'
            mock_glob.return_value = [mock_img_path]
            
            with patch('pptopic.lib.Image.open') as mock_open:
                mock_img = MagicMock()
                mock_img.mode = 'RGB'
                mock_img.width = 100
                mock_img.height = 100
                mock_img.resize.return_value = mock_img
                mock_open.return_value.__enter__.return_value = mock_img
                
                with patch('pptopic.lib.Image.new') as mock_new:
                    mock_canvas = MagicMock()
                    mock_new.return_value = mock_canvas
                    
                    PPT_longPic(ppt_file, saveto=".")
                    
                    mock_canvas.save.assert_called_once()

    @patch('pptopic.lib.convertPPT')
    def test_ppt_longpic_multiple_images(self, mock_convert_ppt, tmp_path):
        """Test PPT_longPic with multiple images."""
        ppt_file = tmp_path / "test.pptx"
        ppt_file.touch()
        
        mock_ppt = MagicMock()
        mock_convert_ppt.return_value.__enter__.return_value = mock_ppt
        
        with patch('pptopic.lib.Path.glob') as mock_glob:
            mock_img_path1 = MagicMock()
            mock_img_path1.suffix = '.jpg'
            mock_img_path2 = MagicMock()
            mock_img_path2.suffix = '.jpg'
            mock_glob.return_value = [mock_img_path1, mock_img_path2]
            
            with patch('pptopic.lib.Image.open') as mock_open:
                mock_img = MagicMock()
                mock_img.mode = 'RGB'
                mock_img.width = 100
                mock_img.height = 100
                mock_img.resize.return_value = mock_img
                mock_open.return_value.__enter__.return_value = mock_img
                
                with patch('pptopic.lib.Image.new') as mock_new:
                    mock_canvas = MagicMock()
                    mock_new.return_value = mock_canvas
                    
                    PPT_longPic(ppt_file, saveto=tmp_path)
                    
                    mock_canvas.paste.assert_called()