#!/usr/bin/env python3
"""
Test script to verify the text rendering fixes for cropping and line length issues.
"""

from PIL import Image, ImageFont
from pyWebLayout.concrete.text import Text, Line
from pyWebLayout.style import Font, FontStyle, FontWeight
from pyWebLayout.style.layout import Alignment
import os

def test_text_cropping_fix():
    """Test that text is no longer cropped at the beginning and end"""
    print("Testing text cropping fixes...")
    
    # Create a font with a reasonable size
    font_style = Font(
        font_path=None,  # Use default font
        font_size=16,
        colour=(0, 0, 0, 255),
        weight=FontWeight.NORMAL,
        style=FontStyle.NORMAL
    )
    
    # Test with text that might have overhang (like italic or characters with descenders)
    test_texts = [
        "Hello World!",
        "Typography",
        "gjpqy",  # Characters with descenders
        "AWVT",   # Characters that might have overhang
        "Italic Text"
    ]
    
    for i, text_content in enumerate(test_texts):
        print(f"  Testing text: '{text_content}'")
        text = Text(text_content, font_style)
        
        # Verify dimensions are reasonable
        print(f"    Dimensions: {text.width}x{text.height}")
        print(f"    Text offsets: x={getattr(text, '_text_offset_x', 0)}, y={getattr(text, '_text_offset_y', 0)}")
        
        # Render the text
        rendered = text.render()
        print(f"    Rendered size: {rendered.size}")
        
        # Save for visual inspection
        output_path = f"test_text_{i}_{text_content.replace(' ', '_').replace('!', '')}.png"
        rendered.save(output_path)
        print(f"    Saved as: {output_path}")
    
    print("Text cropping test completed.\n")

def test_line_length_fix():
    """Test that lines are using the full available width properly"""
    print("Testing line length fixes...")
    
    font_style = Font(
        font_path=None,
        font_size=14,
        colour=(0, 0, 0, 255)
    )
    
    # Create a line with specific width
    line_width = 300
    line_height = 20
    spacing = (5, 10)  # min, max spacing
    
    line = Line(
        spacing=spacing,
        origin=(0, 0),
        size=(line_width, line_height),
        font=font_style,
        halign=Alignment.LEFT
    )
    
    # Add words to the line
    words = ["This", "is", "a", "test", "of", "line", "length", "calculation"]
    
    print(f"  Line width: {line_width}")
    print(f"  Adding words: {' '.join(words)}")
    
    for word in words:
        result = line.add_word(word)
        if result:
            print(f"    Word '{word}' didn't fit, overflow: '{result}'")
            break
        else:
            print(f"    Added '{word}', current width: {line._current_width}")
    
    print(f"  Final line width used: {line._current_width}/{line_width}")
    print(f"  Words in line: {len(line.renderable_words)}")
    
    # Render the line
    rendered_line = line.render()
    rendered_line.save("test_line_length.png")
    print(f"  Line saved as: test_line_length.png")
    print(f"  Rendered line size: {rendered_line.size}")
    
    print("Line length test completed.\n")

def test_justification():
    """Test text justification to ensure proper spacing"""
    print("Testing text justification...")
    
    font_style = Font(
        font_path=None,
        font_size=12,
        colour=(0, 0, 0, 255)
    )
    
    alignments = [
        (Alignment.LEFT, "left"),
        (Alignment.CENTER, "center"),
        (Alignment.RIGHT, "right"),
        (Alignment.JUSTIFY, "justify")
    ]
    
    for alignment, name in alignments:
        line = Line(
            spacing=(3, 8),
            origin=(0, 0),
            size=(250, 18),
            font=font_style,
            halign=alignment
        )
        
        # Add some words
        words = ["Testing", "text", "alignment", "and", "spacing"]
        for word in words:
            line.add_word(word)
        
        rendered = line.render()
        output_path = f"test_alignment_{name}.png"
        rendered.save(output_path)
        print(f"  {name.capitalize()} alignment saved as: {output_path}")
    
    print("Justification test completed.\n")

if __name__ == "__main__":
    print("Running text rendering fix verification tests...\n")
    
    test_text_cropping_fix()
    test_line_length_fix()
    test_justification()
    
    print("All tests completed. Check the generated PNG files for visual verification.")
    print("Look for:")
    print("- Text should not be cropped at the beginning or end")
    print("- Lines should use available width more efficiently")
    print("- Different alignments should work correctly")