/* 472-3 헬퍼 — TS import 도달 집합(472-0 g472/graph.mjs 꼴 · 읽기만).
 *   node helper_472_3_graph.mjs <저장소 뿌리> <입구.ts> [<입구.ts> …]
 * 입구마다 도달 파일(뿌리 상대 · `/`)을 JSON 한 벌로 표준출력 — 정적 import · export from · 동적
 * import() · new URL(…, import.meta.url)(워커) · `import type` · `export type` 은 뺌(지워짐) · 정적 import ·
 * export 는 줄 머리만(주석 속 「import」 낱말 안 셈). */
import fs from "node:fs";
import path from "node:path";

const [root, ...entries] = process.argv.slice(2);
const alias = { "@ui/": "ui_template/", "@config/": "config/", "@util/": "common_util/" };
const rel = (p) => path.relative(root, p).split(path.sep).join("/");
const exists = (p) => {
  for (const c of [p, `${p}.ts`, `${p}/index.ts`])
    if (fs.existsSync(c) && fs.statSync(c).isFile()) return c;
  return null;
};
function resolve(from, spec) {
  let base;
  if (spec.startsWith(".")) base = path.resolve(path.dirname(from), spec);
  else {
    const a = Object.keys(alias).find((k) => spec.startsWith(k));
    if (!a) return null;
    base = path.resolve(root, alias[a] + spec.slice(a.length));
  }
  return exists(base.replace(/\.js$/, ""));
}
const re =
  /^\s*(?:import|export)\s+(?:type\s+)?(?:[^;"'`]*?\sfrom\s+)?["']([^"']+)["']|import\(\s*["']([^"']+)["']\s*\)|new URL\(\s*["']([^"']+)["']\s*,\s*import\.meta\.url/gm;
function deps(file) {
  if (!/\.(ts|mts)$/.test(file)) return [];
  const src = fs.readFileSync(file, "utf8");
  const out = [];
  for (const m of src.matchAll(re)) {
    if (/^\s*(?:import|export)\s+type\s/.test(m[0])) continue;
    const target = resolve(file, m[1] || m[2] || m[3]);
    if (target) out.push(target);
  }
  return out;
}
const result = {};
for (const entry of entries) {
  const seen = new Set();
  const stack = [path.resolve(root, entry)];
  while (stack.length) {
    const file = stack.pop();
    if (seen.has(file)) continue;
    seen.add(file);
    stack.push(...deps(file));
  }
  result[entry] = [...seen].map(rel).sort();
}
process.stdout.write(JSON.stringify(result));