led-controller/docs/mockups/generate_images.py

#!/usr/bin/env python3
"""
Generate images from HTML mockup files
Uses Playwright to render HTML and take screenshots
"""

import os
import sys
from pathlib import Path

try:
    from playwright.sync_api import sync_playwright
    PLAYWRIGHT_AVAILABLE = True
except ImportError:
    PLAYWRIGHT_AVAILABLE = False

try:
    from selenium import webdriver
    from selenium.webdriver.chrome.options import Options
    from selenium.webdriver.chrome.service import Service
    SELENIUM_AVAILABLE = True
except ImportError:
    SELENIUM_AVAILABLE = False

try:
    from html2image import Html2Image
    HTML2IMAGE_AVAILABLE = True
except ImportError:
    HTML2IMAGE_AVAILABLE = False


def generate_with_playwright(html_file, output_file, width=1920, height=1080):
    """Generate image using Playwright"""
    with sync_playwright() as p:
        browser = p.chromium.launch(headless=True)
        page = browser.new_page(viewport={'width': width, 'height': height})
        page.goto(f'file://{html_file.absolute()}')
        # Wait for page to load
        page.wait_for_timeout(1000)
        page.screenshot(path=str(output_file), full_page=True)
        browser.close()
    print(f"✓ Generated {output_file.name} using Playwright")


def generate_with_selenium(html_file, output_file, width=1920, height=1080):
    """Generate image using Selenium"""
    chrome_options = Options()
    chrome_options.add_argument('--headless')
    chrome_options.add_argument('--no-sandbox')
    chrome_options.add_argument('--disable-dev-shm-usage')
    chrome_options.add_argument(f'--window-size={width},{height}')
    
    driver = webdriver.Chrome(options=chrome_options)
    try:
        driver.get(f'file://{html_file.absolute()}')
        # Wait for page to load
        import time
        time.sleep(2)
        driver.save_screenshot(str(output_file))
        print(f"✓ Generated {output_file.name} using Selenium")
    finally:
        driver.quit()


def generate_with_html2image(html_file, output_file, width=1920, height=1080):
    """Generate image using html2image"""
    hti = Html2Image(size=(width, height))
    hti.screenshot(
        html_file=str(html_file),
        save_as=output_file.name,
        size=(width, height)
    )
    print(f"✓ Generated {output_file.name} using html2image")


def generate_image(html_file, output_dir, width=1920, height=1080):
    """Generate image from HTML file using available method"""
    html_path = Path(html_file)
    output_path = output_dir / f"{html_path.stem}.png"
    
    if PLAYWRIGHT_AVAILABLE:
        try:
            generate_with_playwright(html_path, output_path, width, height)
            return True
        except Exception as e:
            print(f"Playwright failed: {e}, trying alternatives...")
    
    if SELENIUM_AVAILABLE:
        try:
            generate_with_selenium(html_path, output_path, width, height)
            return True
        except Exception as e:
            print(f"Selenium failed: {e}, trying alternatives...")
    
    if HTML2IMAGE_AVAILABLE:
        try:
            generate_with_html2image(html_path, output_path, width, height)
            return True
        except Exception as e:
            print(f"html2image failed: {e}")
    
    return False


def main():
    """Main function to generate images from all HTML files"""
    script_dir = Path(__file__).parent
    output_dir = script_dir / "images"
    output_dir.mkdir(exist_ok=True)
    
    html_files = list(script_dir.glob("*.html"))
    
    if not html_files:
        print("No HTML files found in mockups directory")
        return
    
    print(f"Found {len(html_files)} HTML file(s)")
    print(f"Output directory: {output_dir}")
    print()
    
    # Check available libraries
    if not any([PLAYWRIGHT_AVAILABLE, SELENIUM_AVAILABLE, HTML2IMAGE_AVAILABLE]):
        print("ERROR: No screenshot library available!")
        print("\nPlease install one of the following:")
        print("  pip install playwright && playwright install chromium")
        print("  pip install selenium")
        print("  pip install html2image")
        sys.exit(1)
    
    print("Available screenshot libraries:")
    if PLAYWRIGHT_AVAILABLE:
        print("  ✓ Playwright")
    if SELENIUM_AVAILABLE:
        print("  ✓ Selenium")
    if HTML2IMAGE_AVAILABLE:
        print("  ✓ html2image")
    print()
    
    # Generate images
    success_count = 0
    for html_file in html_files:
        print(f"Generating image from {html_file.name}...")
        if generate_image(html_file, output_dir):
            success_count += 1
        else:
            print(f"✗ Failed to generate image from {html_file.name}")
        print()
    
    print(f"Successfully generated {success_count}/{len(html_files)} images")
    print(f"Images saved to: {output_dir}")


if __name__ == "__main__":
    main()