// 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/icon.ico (Windows), assets/tray/tray-44-template.png (macOS tray),
// assets/tray/tray-32-color.png (Windows tray).
import { mkdir } from "node:fs/promises";
import path from "node:path";
import { Resvg } from "@resvg/resvg-js";
import pngToIco from "png-to-ico";

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);
}

// ---- Windows app icon (.ico: 16/32/48/256, used by installer + taskbar) ----
const icoPngs = [16, 32, 48, 256].map((size) => Buffer.from(renderPng(logo, size)));
await Bun.write(path.join(assets, "icon.ico"), await pngToIco(icoPngs));

// ---- tray: macOS 22pt template @2x; Windows small colored icon ----
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);
await writePng(path.join(assets, "tray", "tray-32-color.png"), logo, 32);

console.log("icons regenerated: app iconset + icon.ico + tray images");