/* 469-3 빈 목록 초안("[]") 떠남 판정 헬퍼 — `design_leave` · `b_page_state` 를 한 번씩만 읽어(같은 모듈 한 벌)
 * 저장분 있음/없음에 따라 designDirty · hasDrafts 가 같게 나오는지. 결과 JSON 을 stdout 으로.
 */
const path = require("path");
const { makeLoader } = require("./helper_ts_stub_loader.cjs");

const ROOT = path.join(__dirname, "..", "..");

const map = new Map();
const session = {
  getItem: (key) => (map.has(key) ? map.get(key) : null),
  setItem: (key, value) => map.set(key, String(value)),
  removeItem: (key) => map.delete(key),
  key: (index) => [...map.keys()][index] ?? null,
  get length() {
    return map.size;
  },
};
globalThis.window = { sessionStorage: session, localStorage: session };
globalThis.sessionStorage = session;

const STUBS = {
  "@config/config_frontend": {
    ROUTES: { B05_PROFILE: "/b05-profile", B06_SECTION: "/b06-section" },
  },
  "@ui/ui_template_locale": { t: (key) => key },
  "../b_project_switch": { guardProjectLeave: () => undefined },
};
const { loadTs } = makeLoader({
  root: ROOT,
  requireFor: (full, file) => (request) => {
    if (request in STUBS) return STUBS[request];
    if (request.startsWith(".")) return loadTs(path.join(path.dirname(file), `${request}.ts`));
    return require(request);
  },
});
const state = loadTs(path.join(ROOT, "A00_Common", "b_page_state.ts"));
const leave = loadTs(path.join(ROOT, "A00_Common", "design", "design_leave.ts"));
const P = "p1";
const set = (name, raw) => session.setItem(`aislo:draft:${name}:${P}`, raw);
const unset = (name) => session.removeItem(`aislo:draft:${name}:${P}`);
const both = () => [leave.designDirty(P), state.hasDrafts(P)];

const out = {};
set("pipes", "[]");
out.unknownSaved = both(); // 저장분을 모름 = 빈 칸(전과 같음)
state.noteSavedList(P, "pipes", false);
out.savedEmpty = both(); // 처음부터 관 0
state.noteSavedList(P, "pipes", true);
out.savedFilled = both(); // 관 있던 곳에서 모두 지움
unset("pipes");
set("structures", "[]");
out.structuresSavedEmpty = both();
state.noteSavedList(P, "structures", true);
out.structuresSavedFilled = both();
leave.discardDesignEdits(P);
out.afterDiscard = [both(), session.getItem(`aislo:draft:structures:${P}`)];
set("pipes", "[]");
state.forgetSavedLists(P);
out.afterForget = both();
for (const raw of ["{}", ""]) {
  set("pipes", raw);
  state.noteSavedList(P, "pipes", true);
  out[`raw_${raw || "empty"}`] = both();
}
state.noteSavedList(P, "pipes", true);
set("pipes", '[{"id":1}]');
out.withItems = both();
process.stdout.write(JSON.stringify(out));