/* ===== 서비스 워커 해제 ===== */
if ('serviceWorker' in navigator) {
    navigator.serviceWorker.getRegistrations().then(function(regs) { regs.forEach(function(r) { r.unregister(); }); });
    if (typeof caches !== 'undefined') { caches.keys().then(function(ns) { ns.forEach(function(n) { caches.delete(n); }); }); }
}

/* ===== Config ===== */
const API_BASE = '/api';
const PURPOSE_LABELS = {
    day_labor: '일용공', equipment_repair: '설비수리', inspection: '검사',
    delivery: '납품/배송', safety_audit: '안전점검', client_audit: '고객심사',
    construction: '공사', other: '기타'
};

/* ===== Token ===== */
function _cookieGet(n) { const m = document.cookie.match(new RegExp('(?:^|; )' + n + '=([^;]*)')); return m ? decodeURIComponent(m[1]) : null; }
function _cookieRemove(n) { let c = n + '=; path=/; max-age=0'; if (location.hostname.includes('technicalkorea.net')) c += '; domain=.technicalkorea.net; secure; samesite=lax'; document.cookie = c; }
function getToken() { return _cookieGet('sso_token') || localStorage.getItem('sso_token'); }
function getLoginUrl() {
    const h = location.hostname;
    const t = Date.now();
    if (h.includes('technicalkorea.net')) return location.protocol + '//tkfb.technicalkorea.net/login?redirect=' + encodeURIComponent(location.href) + '&_t=' + t;
    return location.protocol + '//' + h + ':30000/login?redirect=' + encodeURIComponent(location.href) + '&_t=' + t;
}
function decodeToken(t) { try { const b = atob(t.split('.')[1].replace(/-/g,'+').replace(/_/g,'/')); return JSON.parse(new TextDecoder().decode(Uint8Array.from(b, c => c.charCodeAt(0)))); } catch { return null; } }

/* ===== 리다이렉트 루프 방지 ===== */
const _REDIRECT_KEY = '_sso_redirect_ts';
function _safeRedirect() {
    const last = parseInt(sessionStorage.getItem(_REDIRECT_KEY) || '0', 10);
    if (Date.now() - last < 5000) { console.warn('[tkpurchase] 리다이렉트 루프 감지'); return; }
    sessionStorage.setItem(_REDIRECT_KEY, String(Date.now()));
    location.href = getLoginUrl();
}

/* ===== API ===== */
async function api(path, opts = {}) {
    const token = getToken();
    const headers = { 'Authorization': token ? `Bearer ${token}` : '', ...(opts.headers||{}) };
    if (!(opts.body instanceof FormData)) headers['Content-Type'] = 'application/json';
    const res = await fetch(API_BASE + path, { ...opts, headers });
    if (res.status === 401) { _safeRedirect(); throw new Error('인증 만료'); }
    if (res.headers.get('content-type')?.includes('text/csv')) return res;
    const data = await res.json();
    if (!res.ok) throw new Error(data.error || '요청 실패');
    return data;
}

/* ===== Toast ===== */
function showToast(msg, type = 'success') {
    document.querySelector('.toast-message')?.remove();
    const el = document.createElement('div');
    el.className = `toast-message fixed bottom-4 right-4 px-4 py-3 rounded-lg text-white z-[10000] shadow-lg ${type==='success'?'bg-emerald-500':'bg-red-500'}`;
    el.innerHTML = `<i class="fas ${type==='success'?'fa-check-circle':'fa-exclamation-circle'} mr-2"></i>${escapeHtml(msg)}`;
    document.body.appendChild(el);
    setTimeout(() => { el.classList.add('opacity-0'); setTimeout(() => el.remove(), 300); }, 3000);
}

/* ===== Escape ===== */
function escapeHtml(str) { if (!str) return ''; const d = document.createElement('div'); d.textContent = str; return d.innerHTML; }

/* ===== Helpers ===== */
function formatDate(d) { if (!d) return ''; return String(d).substring(0, 10); }
function formatTime(d) { if (!d) return ''; return String(d).substring(11, 16); }
function formatDateTime(d) { if (!d) return ''; return String(d).substring(0, 16).replace('T', ' '); }
function purposeLabel(p) { return PURPOSE_LABELS[p] || p || ''; }
function purposeBadge(p) { return `<span class="badge purpose-${p}">${purposeLabel(p)}</span>`; }
function statusBadge(s) {
    const m = { checked_in: ['badge-green', '체크인'], checked_out: ['badge-blue', '체크아웃'], auto_checkout: ['badge-amber', '자동마감'], cancelled: ['badge-gray', '취소'] };
    const [cls, label] = m[s] || ['badge-gray', s];
    return `<span class="badge ${cls}">${label}</span>`;
}
function debounce(fn, ms) {
    let t; return function(...args) { clearTimeout(t); t = setTimeout(() => fn.apply(this, args), ms); };
}

/* ===== Logout ===== */
function doLogout() {
    if (!confirm('로그아웃?')) return;
    _cookieRemove('sso_token'); _cookieRemove('sso_user'); _cookieRemove('sso_refresh_token');
    ['sso_token','sso_user','sso_refresh_token','token','user','access_token','currentUser','current_user','userInfo','userPageAccess'].forEach(k => localStorage.removeItem(k));
    location.href = getLoginUrl() + '&logout=1';
}

/* ===== Navbar ===== */
function renderNavbar() {
    const currentPage = location.pathname.replace(/\//g, '') || 'index.html';
    const links = [
        { href: '/', icon: 'fa-chart-line', label: '대시보드', match: ['index.html'] },
        { href: '/daylabor.html', icon: 'fa-hard-hat', label: '일용공 신청', match: ['daylabor.html'] },
        { href: '/schedule.html', icon: 'fa-calendar-alt', label: '작업일정', match: ['schedule.html'] },
        { href: '/workreport.html', icon: 'fa-clipboard-list', label: '업무현황', match: ['workreport.html'] },
        { href: '/workreport-summary.html', icon: 'fa-chart-bar', label: '업무 종합', match: ['workreport-summary.html'] },
        { href: '/accounts.html', icon: 'fa-user-shield', label: '계정 관리', match: ['accounts.html'] },
    ];
    const nav = document.getElementById('sideNav');
    if (!nav) return;
    nav.innerHTML = links.map(l => {
        const active = l.match.some(m => currentPage === m || currentPage.endsWith(m));
        return `<a href="${l.href}" class="nav-link flex items-center gap-3 px-4 py-2.5 rounded-lg text-sm transition-colors ${active ? 'active' : 'text-gray-600 hover:bg-gray-100'}">
            <i class="fas ${l.icon} w-5 text-center"></i><span>${l.label}</span></a>`;
    }).join('');
}

/* ===== State ===== */
let currentUser = null;

/* ===== Init ===== */
function initAuth() {
    // 쿠키 우선 검증: 쿠키 없고 localStorage에만 토큰이 있으면 정리
    const cookieToken = _cookieGet('sso_token');
    const localToken = localStorage.getItem('sso_token');
    if (!cookieToken && localToken) {
        ['sso_token','sso_user','sso_refresh_token','token','user','access_token',
         'currentUser','current_user','userInfo','userPageAccess'].forEach(k => localStorage.removeItem(k));
        _safeRedirect();
        return false;
    }

    const token = getToken();
    if (!token) { _safeRedirect(); return false; }
    const decoded = decodeToken(token);
    if (!decoded) { _safeRedirect(); return false; }
    sessionStorage.removeItem(_REDIRECT_KEY);
    if (!localStorage.getItem('sso_token')) localStorage.setItem('sso_token', token);
    currentUser = {
        id: decoded.user_id || decoded.id,
        username: decoded.username || decoded.sub,
        name: decoded.name || decoded.full_name,
        role: (decoded.role || decoded.access_level || '').toLowerCase(),
        partner_company_id: decoded.partner_company_id || null,
        department_id: decoded.department_id || null
    };
    // 협력업체 계정 → partner-portal로 분기
    if (currentUser.partner_company_id && !location.pathname.includes('partner-portal')) {
        location.href = '/partner-portal.html';
        return false;
    }

    const dn = currentUser.name || currentUser.username;
    const nameEl = document.getElementById('headerUserName');
    const avatarEl = document.getElementById('headerUserAvatar');
    if (nameEl) nameEl.textContent = dn;
    if (avatarEl) avatarEl.textContent = dn.charAt(0).toUpperCase();
    renderNavbar();
    setTimeout(() => document.querySelector('.fade-in')?.classList.add('visible'), 50);
    return true;
}