/**
 * Generate PWA Icons from SVG using Sharp
 * Run: npm install sharp && node generate-pwa-icons-sharp.js
 */

import sharp from 'sharp';
import { readFileSync, mkdirSync } from 'fs';
import { join, dirname } from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

const svgPath = join(__dirname, 'assets', 'images', 'app-icon.svg');
const iconsDir = join(__dirname, 'public', 'icons');

// Create icons directory
mkdirSync(iconsDir, { recursive: true });

const svgBuffer = readFileSync(svgPath);

const sizes = [
  { size: 192, name: 'icon-192.png', maskable: false },
  { size: 512, name: 'icon-512.png', maskable: false },
  { size: 192, name: 'icon-192-maskable.png', maskable: true },
  { size: 512, name: 'icon-512-maskable.png', maskable: true },
  { size: 180, name: 'apple-touch-icon.png', maskable: false }
];

async function generateIcons() {
  console.log('Generating PWA icons...');
  
  for (const { size, name, maskable } of sizes) {
    try {
      let pipeline = sharp(svgBuffer).resize(size, size);
      
      // For maskable icons, add padding (safe zone)
      if (maskable) {
        const padding = Math.floor(size * 0.1); // 10% padding
        const innerSize = size - (padding * 2);
        
        pipeline = sharp(svgBuffer)
          .resize(innerSize, innerSize)
          .extend({
            top: padding,
            bottom: padding,
            left: padding,
            right: padding,
            background: { r: 10, g: 10, b: 10, alpha: 1 } // #0a0a0a
          });
      }
      
      await pipeline.png().toFile(join(iconsDir, name));
      console.log(`✓ Generated ${name}`);
    } catch (error) {
      console.error(`✗ Failed to generate ${name}:`, error.message);
    }
  }
  
  console.log('\n✓ All icons generated successfully!');
  console.log('Icons saved to: public/icons/');
}

generateIcons().catch(console.error);