/* ══════════════════════════════════════════════════
   F-4: PWA Service Worker 등록
══════════════════════════════════════════════════ */
if ('serviceWorker' in navigator) {
  window.addEventListener('load', () => {
    navigator.serviceWorker.register('/static/sw.js', { scope: '/' })
      .then(reg => {
        console.log('[GUARDiA PWA] SW 등록 성공:', reg.scope);
        // 새 버전 감지 시 사용자에게 알림
        reg.addEventListener('updatefound', () => {
          const newSW = reg.installing;
          newSW.addEventListener('statechange', () => {
            if (newSW.state === 'installed' && navigator.serviceWorker.controller) {
              console.log('[GUARDiA PWA] 새 버전 사용 가능 — 새로고침하면 업데이트됩니다.');
            }
          });
        });
      })
      .catch(err => console.warn('[GUARDiA PWA] SW 등록 실패:', err));
  });
}

/* ══════════════════════════════════════════════════
   Nifty 사이드바 계층 메뉴 토글
══════════════════════════════════════════════════ */
function toggleNavGroup(header) {
  const body = header.nextElementSibling;
  const isOpen = body.classList.contains('open');
  body.classList.toggle('open', !isOpen);
  header.setAttribute('aria-expanded', String(!isOpen));
}

// 현재 URL에 해당하는 메뉴 자동 열기
(function autoOpenNavGroup() {
  document.querySelectorAll('.nav-group-body .nav-sub-item').forEach(item => {
    const href = item.getAttribute('href') || '';
    if (href && location.pathname.startsWith(href.split('?')[0])) {
      const body   = item.closest('.nav-group-body');
      const header = body?.previousElementSibling;
      if (body && header) {
        body.classList.add('open');
        header.setAttribute('aria-expanded', 'true');
        item.classList.add('active');
      }
    }
  });
})();

/* ══════════════════════════════════════════════════
   테마 관리  (스크립트 최상단 — FOUC 방지)
══════════════════════════════════════════════════ */
function applyTheme(key) {
  document.body.dataset.theme = key;
  localStorage.setItem("guardia_theme", key);
  document.querySelectorAll(".theme-swatch").forEach(b =>
    b.classList.toggle("active", b.dataset.theme === key)
  );
}

/* ─── Auth ───────────────────────────────────────── */
const _token    = localStorage.getItem("guardia_token");
const _userInfo = JSON.parse(localStorage.getItem("guardia_userinfo") || "{}");

// 로그인 안 된 경우 → /login으로
if (!_token) {
  window.location.replace("/login");
}
// 비밀번호 변경 필요 → /change-password로
if (_userInfo.must_change_pw) {
  window.location.replace("/change-password");
}

/**
 * Bearer 토큰을 자동으로 포함하는 fetch 래퍼.
 * 401 응답 시 로그인 페이지로 리다이렉트.
 */
async function authFetch(url, opts = {}) {
  const headers = { "Content-Type": "application/json", ...(opts.headers || {}) };
  if (_token) headers["Authorization"] = `Bearer ${_token}`;
  const res = await fetch(url, { ...opts, headers });
  if (res.status === 401) {
    localStorage.removeItem("guardia_token");
    localStorage.removeItem("guardia_userinfo");
    window.location.replace("/login");
    throw new Error("Unauthorized");
  }
  return res;
}

/** 로그아웃 */
function logout() {
  localStorage.removeItem("guardia_token");
  localStorage.removeItem("guardia_userinfo");
  window.location.replace("/login");
}

/* ─── State ─────────────────────────────────────── */
let currentView    = "dashboard";
let srCache        = [];
let statsCache     = {};
let workloadCache  = [];
let dashCache      = {};   // 역할별 대시보드 데이터

/* ─── Status labels ─────────────────────────────── */
const STATUS_LABEL = {
  RECEIVED:              "접수",
  PARSED:                "파싱 완료",
  PENDING_APPROVAL:      "승인 대기",
  APPROVED:              "승인됨",
  IN_PROGRESS:           "진행 중",
  PENDING_PM_VALIDATION: "PM 검증 대기",
  COMPLETED:             "완료",
  FAILED_ROLLBACK:       "롤백 실패",
  REJECTED:              "반려",
};

const TYPE_LABEL = {
  DEPLOY: "배포", RESTART: "재기동", LOG: "로그",
  INQUIRY: "문의", OTHER: "기타",
};

const PRIORITY_LABEL = { CRITICAL: "긴급", HIGH: "높음", MEDIUM: "보통", LOW: "낮음" };

const KANBAN_COLS = [
  { key: "RECEIVED",              label: "접수" },
  { key: "PENDING_APPROVAL",      label: "승인 대기" },
  { key: "APPROVED",              label: "승인됨" },
  { key: "IN_PROGRESS",           label: "진행 중" },
  { key: "PENDING_PM_VALIDATION", label: "PM 검증" },
  { key: "COMPLETED",             label: "완료" },
  { key: "FAILED_ROLLBACK",       label: "롤백 실패" },
  { key: "REJECTED",              label: "반려" },
];

const STATUS_COLORS = {
  RECEIVED:              "#8b949e",
  PARSED:                "#79c0ff",
  PENDING_APPROVAL:      "#e3b341",
  APPROVED:              "#56d364",
  IN_PROGRESS:           "#58a6ff",
  PENDING_PM_VALIDATION: "#bc8cff",
  COMPLETED:             "#3fb950",
  FAILED_ROLLBACK:       "#f85149",
  REJECTED:              "#da3633",
};

/* ─── Init ──────────────────────────────────────── */
window.addEventListener("DOMContentLoaded", async () => {
  // 사용자 정보 표시
  const roleLabel = { ADMIN:"관리자", ENGINEER:"엔지니어", PM:"PM", CUSTOMER:"고객" };
  const roleColor = {
    ADMIN:"#818cf8", ENGINEER:"#34d399", PM:"#fbbf24", CUSTOMER:"#a78bfa"
  };
  const role = _userInfo.role || "";
  document.getElementById("user-display-name").textContent =
    _userInfo.display_name || _userInfo.username || "사용자";
  const roleBadge = document.getElementById("user-role-badge");
  roleBadge.textContent           = roleLabel[role] || role;
  roleBadge.style.background      = (roleColor[role] || "#64748b") + "22";
  roleBadge.style.color           = roleColor[role] || "#64748b";

  // 테마 버튼 active 상태 동기화
  applyTheme(document.body.dataset.theme || "dark");

  setupNav();
  setupNewSR();
  setupListFilters();
  initChat();
  await loadAll();
  initSSE();          // 실시간 이벤트 연결
  startPoll();        // 30초 폴백 폴링
});

async function loadAll() {
  await Promise.all([loadDashboardMe(), loadSRs(), loadWorkload()]);
  renderCurrentView();
}

/* ══════════════════════════════════════════════════
   SSE 실시간 연결
══════════════════════════════════════════════════ */
let _sseSource = null;
let _sseRetry  = 0;
let _refreshPending = false;
let _pollTimer = null;

function initSSE() {
  if (!_token) return;
  if (_sseSource) { _sseSource.close(); _sseSource = null; }

  const url = `/api/dashboard/events?token=${encodeURIComponent(_token)}`;
  _sseSource = new EventSource(url);

  _sseSource.onopen = () => {
    _sseRetry = 0;
    setSseDot(true);
  };

  _sseSource.onmessage = (e) => {
    if (!e.data || e.data.trim() === "") return;