#!/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(process.env.NODEDC_DEPLOY_ARTIFACT_DIR || resolve(scriptDir, "../deploy-artifacts"));
const [patchId = "module-foundry-bootstrap-20260714-001", ...extra] = process.argv.slice(2);

if (extra.length || !/^[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`);

await assertSourceBoundary();

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", canonicalTarScript(), target, stage], {
    encoding: "utf8",
    maxBuffer: 128 * 1024 * 1024,
  });
  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 assertSourceBoundary() {
  const compose = await readFile(resolve(foundryRoot, "infra/docker-compose.module-foundry.yml"), "utf8");
  for (const fragment of [
    "source: /volume1/docker/nodedc-platform/secrets/foundry-edp-managed-provisioner/private-key.pem",
    "target: /run/nodedc-secrets/foundry-edp-managed-provisioner/private-key.pem",
    "NODEDC_EXTERNAL_DATA_PLANE_FOUNDRY_PROVISIONER_PRIVATE_KEY_FILE: /run/nodedc-secrets/foundry-edp-managed-provisioner/private-key.pem",
    "create_host_path: false",
  ]) {
    if (!compose.includes(fragment)) throw new Error(`foundry_reader_grant_boundary_missing:${fragment}`);
  }
  const provisioner = await readFile(resolve(foundryRoot, "server/foundry-reader-grant-provisioner.mjs"), "utf8");
  for (const marker of [
    '"/internal/data-plane/v1/consumer-reader-bindings/plan"',
    "consumer-reader-bindings/by-key/${encodeURIComponent(bindingKey)}",
    "capabilityDigest: createHash(\"sha256\").update(token",
    "sourceScope: \"resolved-server-side\"",
    "O_NOFOLLOW",
  ]) {
    if (!provisioner.includes(marker)) throw new Error(`foundry_reader_grant_boundary_missing:${marker}`);
  }
  if (/providerId|tenantId|connectionId/.test(provisioner)) {
    throw new Error("foundry_reader_grant_source_scope_boundary_violation");
  }
}

function canonicalTarScript() {
  return [
    "import gzip,io,pathlib,sys,tarfile",
    "root=pathlib.Path(sys.argv[2])",
    "with open(sys.argv[1],'wb') as out:",
    " with gzip.GzipFile(filename='',mode='wb',fileobj=out,compresslevel=9,mtime=0) as gz:",
    "  with tarfile.open(fileobj=gz,mode='w',format=tarfile.PAX_FORMAT) as tar:",
    "   for top in ('manifest.env','files.txt','payload'):",
    "    p=root/top; paths=[p]+(sorted(p.rglob('*')) if p.is_dir() else [])",
    "    for x in paths:",
    "     info=tar.gettarinfo(str(x),arcname=x.relative_to(root).as_posix())",
    "     info.uid=info.gid=0; info.uname=info.gname='root'; info.mtime=0; info.mode=0o755 if info.isdir() else 0o644",
    "     with (open(x,'rb') if info.isfile() else io.BytesIO()) as src: tar.addfile(info,src if info.isfile() else None)",
  ].join("\n");
}

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 (entry.name === "private-key.pem") throw new Error(`private_key_source_rejected:${relative(foundryRoot, join(source, entry.name))}`);
    if (ignoredBasenames.has(entry.name) || entry.name.startsWith(".env") || entry.name.endsWith(".tsbuildinfo")) continue;
    const childSource = join(source, entry.name);
    const childDestination = join(destination, entry.name);
    if (entry.isSymbolicLink()) throw new Error(`source_symlink_rejected:${relative(foundryRoot, childSource)}`);
    await copySafe(childSource, childDestination);
  }
}
