#!/usr/bin/env node
const puppeteer = require('puppeteer');
const fs = require('fs');

const [htmlFile, aspectRatio] = process.argv.slice(2);

if (!htmlFile || !aspectRatio) {
    console.error('Usage: node puppeteer_pdf.js <html_file> <aspect_ratio>');
    process.exit(1);
}

(async () => {
    let browser;
    try {
        console.log('Starting Puppeteer...');
        
        browser = await puppeteer.launch({
            headless: 'new',
            executablePath: process.env.PUPPETEER_EXECUTABLE_PATH || '/usr/bin/chromium',
            args: [
                '--no-sandbox',
                '--disable-setuid-sandbox',
                '--disable-dev-shm-usage',
                '--disable-gpu',
                '--no-first-run',
                '--no-zygote',
                '--single-process'
            ]
        });

        const page = await browser.newPage();
        
        // Set viewport based on aspect ratio
        let width = 1920, height = 1080;
        if (aspectRatio === '9:16') {
            width = 1080;
            height = 1920;
        } else if (aspectRatio === '1:1') {
            width = 1080;
            height = 1080;
        }
        
        await page.setViewport({ width, height, deviceScaleFactor: 1 });
        console.log(`Viewport set to ${width}x${height}`);
        
        // Load HTML
        const html = fs.readFileSync(htmlFile, 'utf8');
        await page.setContent(html, { 
            waitUntil: 'networkidle0',
            timeout: 30000 
        });
        console.log('HTML loaded');
        
        // Wait for fonts and images
        await page.evaluate(() => document.fonts.ready);
        await new Promise(resolve => setTimeout(resolve, 1000));
        console.log('Resources loaded');

        // PDF options
        const pdfPath = htmlFile.replace('.html', '.pdf');
        const options = {
            path: pdfPath,
            printBackground: true,
            preferCSSPageSize: true,
            margin: { top: 0, right: 0, bottom: 0, left: 0 }
        };

        if (aspectRatio === '16:9') {
            options.format = 'A4';
            options.landscape = true;
            console.log('Format: A4 Landscape');
        } else if (aspectRatio === '1:1') {
            options.width = '210mm';
            options.height = '210mm';
            console.log('Format: Square 210x210mm');
        } else {
            options.format = 'A4';
            options.landscape = false;
            console.log('Format: A4 Portrait');
        }

        // Generate PDF
        await page.pdf(options);
        console.log(`PDF created: ${pdfPath}`);
        
        process.exit(0);
    } catch (error) {
        console.error('Error:', error.message);
        process.exit(1);
    } finally {
        if (browser) {
            await browser.close();
        }
    }
})();