#!/usr/bin/env python3
"""
Create demo images for testing Tool_OCR
"""

import sys
from pathlib import Path

# Add backend to path for imports
sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from PIL import Image, ImageDraw, ImageFont
from app.core.config import settings

# Demo docs directory from settings
DEMO_DIR = Path(settings.demo_docs_dir)

def create_text_image(text, filename, size=(800, 600), font_size=40):
    """Create an image with text"""
    # Create white background
    img = Image.new('RGB', size, color='white')
    draw = ImageDraw.Draw(img)

    # Try to use a font from settings, fallback to default
    try:
        font = ImageFont.truetype(settings.debug_font_path, font_size)
    except Exception:
        font = ImageFont.load_default()

    # Calculate text position (centered)
    bbox = draw.textbbox((0, 0), text, font=font)
    text_width = bbox[2] - bbox[0]
    text_height = bbox[3] - bbox[1]
    position = ((size[0] - text_width) // 2, (size[1] - text_height) // 2)

    # Draw text
    draw.text(position, text, fill='black', font=font)

    # Save image
    img.save(filename)
    print(f"Created: {filename}")

def create_multiline_text_image(lines, filename, size=(800, 1000), font_size=30):
    """Create an image with multiple lines of text"""
    img = Image.new('RGB', size, color='white')
    draw = ImageDraw.Draw(img)

    try:
        font = ImageFont.truetype(settings.debug_font_path, font_size)
    except Exception:
        font = ImageFont.load_default()

    # Draw each line
    y = 50
    for line in lines:
        draw.text((50, y), line, fill='black', font=font)
        y += font_size + 20

    img.save(filename)
    print(f"Created: {filename}")

def create_table_image(filename, size=(800, 600)):
    """Create a simple table image"""
    img = Image.new('RGB', size, color='white')
    draw = ImageDraw.Draw(img)

    try:
        font = ImageFont.truetype(settings.debug_font_path, 24)
    except Exception:
        font = ImageFont.load_default()

    # Draw table borders
    # Header row
    draw.rectangle([50, 50, 750, 100], outline='black', width=2)
    # Row 1
    draw.rectangle([50, 100, 750, 150], outline='black', width=2)
    # Row 2
    draw.rectangle([50, 150, 750, 200], outline='black', width=2)
    # Row 3
    draw.rectangle([50, 200, 750, 250], outline='black', width=2)

    # Vertical lines
    draw.line([250, 50, 250, 250], fill='black', width=2)
    draw.line([450, 50, 450, 250], fill='black', width=2)
    draw.line([650, 50, 650, 250], fill='black', width=2)

    # Add text
    draw.text((60, 65), "姓名", fill='black', font=font)
    draw.text((260, 65), "年齡", fill='black', font=font)
    draw.text((460, 65), "部門", fill='black', font=font)
    draw.text((660, 65), "職位", fill='black', font=font)

    draw.text((60, 115), "張三", fill='black', font=font)
    draw.text((260, 115), "28", fill='black', font=font)
    draw.text((460, 115), "技術部", fill='black', font=font)
    draw.text((660, 115), "工程師", fill='black', font=font)

    draw.text((60, 165), "李四", fill='black', font=font)
    draw.text((260, 165), "32", fill='black', font=font)
    draw.text((460, 165), "銷售部", fill='black', font=font)
    draw.text((660, 165), "經理", fill='black', font=font)

    draw.text((60, 215), "王五", fill='black', font=font)
    draw.text((260, 215), "25", fill='black', font=font)
    draw.text((460, 215), "人事部", fill='black', font=font)
    draw.text((660, 215), "專員", fill='black', font=font)

    img.save(filename)
    print(f"Created: {filename}")

def main():
    # Create basic text images
    basic_dir = DEMO_DIR / "basic"
    basic_dir.mkdir(parents=True, exist_ok=True)
    create_text_image(
        "這是中文繁體測試文檔\nTool_OCR 系統測試",
        basic_dir / "chinese_traditional.png"
    )

    create_text_image(
        "这是中文简体测试文档\nTool_OCR 系统测试",
        basic_dir / "chinese_simple.png"
    )

    create_text_image(
        "This is English Test Document\nTool_OCR System Testing",
        basic_dir / "english.png"
    )

    # Create multiline document
    layout_lines = [
        "Tool_OCR 文檔處理系統",
        "",
        "一、系統簡介",
        "Tool_OCR 是一個強大的文檔識別系統，支援批次處理、",
        "版面分析、表格識別等功能。",
        "",
        "二、主要功能",
        "1. 批次文件上傳與處理",
        "2. OCR 文字識別（支援中英文）",
        "3. 版面保留 PDF 導出",
        "4. 表格結構識別",
        "5. 多種格式導出（TXT, JSON, Excel, MD, PDF）",
    ]
    layout_dir = DEMO_DIR / "layout"
    layout_dir.mkdir(parents=True, exist_ok=True)
    create_multiline_text_image(layout_lines, layout_dir / "document.png")

    # Create table image
    tables_dir = DEMO_DIR / "tables"
    tables_dir.mkdir(parents=True, exist_ok=True)
    create_table_image(tables_dir / "simple_table.png")

    print("\n✅ Demo images created successfully!")
    print(f"\n📁 Location: {DEMO_DIR}")
    print("\nYou can now test these images with Tool_OCR:")
    print("  - Basic OCR: demo_docs/basic/")
    print("  - Layout: demo_docs/layout/")
    print("  - Tables: demo_docs/tables/")

if __name__ == "__main__":
    main()