import { program } from "commander";
import { build } from "./build";
import { createServer } from "./dev/server";
import { dirname, join, resolve } from "path";
import { mkdir, rm, writeFile } from "fs/promises";
import { existsSync } from "fs";

const dev = program.command("dev");
dev.action(async () => {
  const bundler = await build();
  const server = createServer(bundler);
  server.listen(3000);
});

const bundle = program.command("build");
bundle.action(async () => {
  const bundler = await build();
  const outputDir = resolve("out");
  if (existsSync(outputDir)) {
    rm(outputDir, { recursive: true });
  }
  for (let path of bundler.paths) {
    await bundler.get(path)?.data;
  }
  for (let path of bundler.paths) {
    const asset = bundler.get(path);
    if (!asset) {
      throw new Error(`Asset not found for path: ${path}`);
    }
    const content = await asset.data;
    const target = join(outputDir, path);
    const targetDir = dirname(target);
    await mkdir(targetDir, { recursive: true });
    await writeFile(target, content.content);
    console.log(`Wrote ${target}`);
  }
  process.exit(0);
});

program.parse(process.argv);