import { spawnSync } from "node:child_process";
import { copyFileSync, existsSync, mkdirSync, readdirSync, rmSync, statSync } from "node:fs";
import { dirname, extname, join, relative } from "node:path";
import { createRequire } from "node:module";

const require = createRequire(import.meta.url);
const rootDir = process.cwd();
const srcDir = join(rootDir, "src");
const distDir = join(rootDir, "dist");

const ASSET_EXTENSIONS = new Set([
	".css",
	".scss",
	".svg",
	".png",
	".jpg",
	".jpeg",
	".webp",
	".gif",
	".ico",
	".json",
]);

const copyAssets = directory => {
	for (const entry of readdirSync(directory)) {
		const fullPath = join(directory, entry);
		const stats = statSync(fullPath);
		if (stats.isDirectory()) {
			copyAssets(fullPath);
			continue;
		}

		if (!ASSET_EXTENSIONS.has(extname(fullPath))) {
			continue;
		}

		const relativePath = relative(srcDir, fullPath);
		const destinationPath = join(distDir, relativePath);
		const destinationDir = dirname(destinationPath);
		if (!existsSync(destinationDir)) {
			mkdirSync(destinationDir, { recursive: true });
		}
		copyFileSync(fullPath, destinationPath);
	}
};

rmSync(distDir, { recursive: true, force: true });

const tscPath = require.resolve("typescript/bin/tsc");
const tscResult = spawnSync(
	process.execPath,
	[tscPath, "-p", "tsconfig.build.json"],
	{ stdio: "inherit", cwd: rootDir },
);

if (tscResult.status !== 0) {
	process.exit(tscResult.status ?? 1);
}

copyAssets(srcDir);