#!/usr/bin/env node
/*
 Generates extension and toolbar PNG icons from the base SVG with transparent
 background. Requires ImageMagick (`magick` or `convert`).

 The SVG defines its own stroke color (set directly in icons/file-search.svg).
 To change colors, edit the SVG; the script does not inject or replace colors.

 Usage:
   node scripts/build-icons.js
*/
const fs = require('fs');
const path = require('path');
const { spawnSync } = require('child_process');

const REPO_ROOT = path.join(__dirname, '..');
const ICONS_DIR = path.join(REPO_ROOT, 'icons');
const SRC_SVG = path.join(ICONS_DIR, 'file-search.svg');

const ADDON_SIZES = [48, 96, 128];
const TOOLBAR_SIZES = [16, 32];

function ensureMagick() {
  try {
    let res = spawnSync('magick', ['-version'], { stdio: 'ignore' });
    if (res && res.status === 0) return 'magick';
    res = spawnSync('convert', ['-version'], { stdio: 'ignore' });
    if (res && res.status === 0) return 'convert';
  } catch (_) {}
  return null;
}

function readSvg() {
  if (!fs.existsSync(SRC_SVG)) {
    console.error(`Base SVG not found: ${path.relative(REPO_ROOT, SRC_SVG)}`);
    process.exit(1);
  }
  return fs.readFileSync(SRC_SVG, 'utf8');
}

function rasterize(magickBin, svgString, size, outPath) {
  const args = ['-background', 'none', '-density', '384', 'svg:-', '-resize', `${size}x${size}`, outPath];
  const proc = spawnSync(magickBin, args, { input: svgString, stdio: ['pipe', 'inherit', 'inherit'] });
  if (proc.status !== 0) {
    console.error(`Failed to generate ${outPath} using ${magickBin}.`);
    process.exit(proc.status || 1);
  }
}

function main() {
  const magick = ensureMagick();
  if (!magick) {
    console.error('ImageMagick not found. Please install ImageMagick (magick or convert) and ensure SVG support is available.');
    process.exit(1);
  }
  if (!fs.existsSync(ICONS_DIR)) fs.mkdirSync(ICONS_DIR, { recursive: true });

  const base = readSvg();

  // Add-on icons (use SVG colors as-is)
  for (const s of ADDON_SIZES) {
    const out = path.join(ICONS_DIR, `icon-${s}.png`);
    rasterize(magick, base, s, out);
    console.log(`Generated ${path.relative(REPO_ROOT, out)}`);
  }

  // Toolbar icons (use SVG colors as-is)
  for (const s of TOOLBAR_SIZES) {
    const out = path.join(ICONS_DIR, `icon-${s}.png`);
    rasterize(magick, base, s, out);
    console.log(`Generated ${path.relative(REPO_ROOT, out)}`);
  }
}

main();