#!/usr/bin/env node

import { existsSync, readdirSync, rmSync } from "node:fs";
import { join, resolve } from "node:path";
import { spawnSync } from "node:child_process";

const webDir = resolve("apps/web");

function listStaleNextArtifacts() {
  if (!existsSync(webDir)) {
    return [];
  }

  return readdirSync(webDir, { withFileTypes: true })
    .filter((entry) => entry.isDirectory())
    .map((entry) => entry.name)
    .filter((name) => name.startsWith(".next."))
    .sort();
}

function removeLocally(names) {
  for (const name of names) {
    rmSync(join(webDir, name), { recursive: true, force: true });
  }
}

function removeWithDocker(names) {
  const dockerCheck = spawnSync("docker", ["--version"], {
    stdio: "ignore",
  });
  if (dockerCheck.status !== 0) {
    return false;
  }

  const shellQuotedPaths = names
    .map((name) => `/work/${name}`)
    .map((path) => `'${path.replaceAll("'", "'\"'\"'")}'`)
    .join(" ");
  const result = spawnSync(
    "docker",
    [
      "run",
      "--rm",
      "-v",
      `${webDir}:/work`,
      "alpine:3.20",
      "sh",
      "-lc",
      `rm -rf -- ${shellQuotedPaths}`,
    ],
    {
      stdio: "inherit",
    },
  );

  return result.status === 0;
}

const initialArtifacts = listStaleNextArtifacts();

if (initialArtifacts.length === 0) {
  console.log("No stale Next.js artifacts found.");
  process.exit(0);
}

removeLocally(initialArtifacts);

const remainingArtifacts = listStaleNextArtifacts();
if (remainingArtifacts.length === 0) {
  console.log(`Removed stale Next.js artifacts: ${initialArtifacts.join(", ")}`);
  process.exit(0);
}

const dockerRemoved = removeWithDocker(remainingArtifacts);
const finalArtifacts = listStaleNextArtifacts();

if (!dockerRemoved || finalArtifacts.length > 0) {
  console.error("Failed to remove stale Next.js artifacts:");
  for (const artifact of finalArtifacts) {
    console.error(`- ${artifact}`);
  }
  console.error("Run the cleanup in an environment with Docker access or fix ownership before retrying.");
  process.exit(1);
}

console.log(`Removed stale Next.js artifacts: ${initialArtifacts.join(", ")}`);