// Regenerate every raster icon asset from the SVG sources (dev-time only).
//   bun scripts/gen-icons.ts
// Produces: assets/icon.png (1024), assets/icon.iconset/* (macOS app icon),
// assets/tray/tray-44-template.png, assets/tray/progress/p{0..100}.png.
import { mkdir } from "node:fs/promises";
import path from "node:path";
import { Resvg } from "@resvg/resvg-js";

const root = path.join(import.meta.dir, "..");
const assets = path.join(root, "assets");

function renderPng(svg: string, sizePx: number): Uint8Array {
	const resvg = new Resvg(svg, { fitTo: { mode: "width", value: sizePx } });
	return resvg.render().asPng();
}

async function writePng(file: string, svg: string, sizePx: number): Promise<void> {
	await mkdir(path.dirname(file), { recursive: true });
	await Bun.write(file, renderPng(svg, sizePx));
}

// ---- app icon: iconset rendered per size (crisper than downscaling) ----
const logo = await Bun.file(path.join(assets, "logo.svg")).text();
await writePng(path.join(assets, "icon.png"), logo, 1024);
for (const size of [16, 32, 128, 256, 512]) {
	await writePng(path.join(assets, "icon.iconset", `icon_${size}x${size}.png`), logo, size);
	await writePng(path.join(assets, "icon.iconset", `icon_${size}x${size}@2x.png`), logo, size * 2);
}

// ---- tray base (22pt status item @2x) ----
const trayGlyph = await Bun.file(path.join(assets, "tray", "tray-glyph.svg")).text();
await writePng(path.join(assets, "tray", "tray-44-template.png"), trayGlyph, 44);

// ---- tray progress frames: faded arrows + centered bar filled to pct ----
function progressSvg(pct: number): string {
	const trackX = 4;
	const trackW = 16;
	const fillW = (trackW * pct) / 100;
	return `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
  <g fill="none" stroke="#000" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round" opacity="0.35">
    <path d="M9.2 9.2 4.6 4.6m0 0v4.2m0-4.2h4.2"/>
    <path d="m14.8 14.8 4.6 4.6m0 0v-4.2m0 4.2h-4.2"/>
  </g>
  <rect x="${trackX}" y="10.7" width="${trackW}" height="2.6" rx="1.3" fill="#000" opacity="0.25"/>
  ${fillW > 0 ? `<rect x="${trackX}" y="10.7" width="${fillW.toFixed(2)}" height="2.6" rx="1.3" fill="#000"/>` : ""}
</svg>`;
}

for (let pct = 0; pct <= 100; pct += 5) {
	await writePng(path.join(assets, "tray", "progress", `p${pct}.png`), progressSvg(pct), 44);
}

console.log("icons regenerated: app iconset, tray template, 21 progress frames");