#!/usr/bin/env node
import { createHash } from "node:crypto";
import { spawnSync } from "node:child_process";
import { cp, lstat, mkdir, mkdtemp, readdir, readFile, rm, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { dirname, join, relative, resolve } from "node:path";
import { fileURLToPath } from "node:url";

const scriptDir = dirname(fileURLToPath(import.meta.url));
const platformRoot = resolve(scriptDir, "../..");
const workspaceRoot = resolve(platformRoot, "..");
const foundryRoot = resolve(workspaceRoot, "NODEDC_DESIGN_GUIDELINE");
const artifactDir = resolve(scriptDir, "../deploy-artifacts");
const patchId = process.argv[2] || "module-foundry-bootstrap-20260714-001";

if (!/^[A-Za-z0-9._-]{1,96}$/.test(patchId)) {
  throw new Error("patch_id_must_contain_only_letters_digits_dot_underscore_hyphen");
}

const files = [
  ".dockerignore",
  ".env.example",
  ".gitignore",
  "Dockerfile",
  "package.json",
  "package-lock.json",
  "tsconfig.base.json",
  "infra/docker-compose.module-foundry.yml",
  "apps",
  "packages",
  "registry",
  "runtime-seed",
  "scripts",
  "server",
];
const ignoredBasenames = new Set([".DS_Store", ".git", "node_modules", "runtime-data", "dist"]);
const stage = await mkdtemp(join(tmpdir(), "nodedc-module-foundry-artifact-"));
const payload = join(stage, "payload");
const target = join(artifactDir, `nodedc-module-foundry-${patchId}.tgz`);

try {
  await mkdir(payload, { recursive: true });
  for (const sourceRelative of files) {
    await copySafe(resolve(foundryRoot, sourceRelative), join(payload, sourceRelative));
  }

  await writeFile(join(stage, "manifest.env"), `id=${patchId}\ncomponent=module-foundry\ntype=app-overlay\n`, "utf8");
  await writeFile(join(stage, "files.txt"), `${files.join("\n")}\n`, "utf8");
  await mkdir(artifactDir, { recursive: true });

  const tar = spawnSync("python3", ["-c", [
    "import sys, tarfile",
    "with tarfile.open(sys.argv[1], 'w:gz', format=tarfile.PAX_FORMAT) as archive:",
    "    [archive.add(name, arcname=name, recursive=True) for name in ('manifest.env', 'files.txt', 'payload')]",
  ].join("\n"), target], {
    cwd: stage,
    encoding: "utf8",
  });
  if (tar.status !== 0) throw new Error(`tar_failed:${tar.stderr || tar.stdout}`);

  const digest = createHash("sha256").update(await readFile(target)).digest("hex");
  console.log(JSON.stringify({ ok: true, patchId, artifact: target, sha256: digest }, null, 2));
} finally {
  await rm(stage, { recursive: true, force: true });
}

async function copySafe(source, destination) {
  const sourceStat = await lstat(source);
  if (sourceStat.isSymbolicLink()) throw new Error(`source_symlink_rejected:${relative(foundryRoot, source)}`);
  if (sourceStat.isFile()) {
    await mkdir(dirname(destination), { recursive: true });
    await cp(source, destination, { force: true, verbatimSymlinks: true });
    return;
  }
  if (!sourceStat.isDirectory()) throw new Error(`source_type_rejected:${source}`);

  await mkdir(destination, { recursive: true });
  for (const entry of await readdir(source, { withFileTypes: true })) {
    if (ignoredBasenames.has(entry.name) || entry.name.startsWith(".env") || entry.name.endsWith(".tsbuildinfo")) continue;
    const childSource = join(source, entry.name);
    const childDestination = join(destination, entry.name);
    if (entry.isSymbolicLink()) throw new Error(`source_symlink_rejected:${relative(foundryRoot, childSource)}`);
    await copySafe(childSource, childDestination);
  }
}