import { readFileSync, existsSync } from "node:fs";
import { resolve } from "node:path";
import { spawn } from "node:child_process";
import { parse } from "dotenv";

const [environment = "development", command = "dev", ...args] =
  process.argv.slice(2);
if (
  !["development", "test", "production"].includes(environment) ||
  !["dev", "build", "start"].includes(command)
) {
  throw new Error(
    "Usage: tsx scripts/next-env.ts development|test|production dev|build|start",
  );
}
const config = (file: string) =>
  existsSync(file) ? parse(readFileSync(file)) : {};
const childEnv: NodeJS.ProcessEnv = {
  ...config(resolve(`config/${environment}.env`)),
  ...config(resolve(`config/${environment}.local.env`)),
  ...process.env,
  APP_ENV: environment,
  NODE_ENV: command === "dev" ? "development" : "production",
};
if (command !== "build" && !childEnv.UPSTREAM_API_URL?.trim()) {
  throw new Error(
    `UPSTREAM_API_URL is required for ${environment}. Set config/${environment}.local.env or the process environment.`,
  );
}
// Turbopack 16.4 can repeatedly restart the root runtime chunk on this site's
// dynamic document routes. Keep stable development HMR and allow explicit opt-in.
if (command === "dev" || command === "build") await import("./build-pwa");
const devBundler =
  command === "dev" &&
  !args.some((arg) => ["--webpack", "--turbopack", "--turbo"].includes(arg))
    ? [childEnv.NEXT_DEV_BUNDLER === "turbopack" ? "--turbopack" : "--webpack"]
    : [];
const child = spawn(
  process.execPath,
  [
    resolve("node_modules/next/dist/bin/next"),
    command,
    ...devBundler,
    ...(command === "build" ? [] : ["--port", childEnv.PORT || "25121"]),
    ...args,
  ],
  { stdio: "inherit", env: childEnv },
);
for (const signal of ["SIGINT", "SIGTERM"] as const)
  process.on(signal, () => child.kill(signal));
child.on("exit", (code) => process.exit(code ?? 1));