const CLUB_ID_KEY = 'admin_club_id';
const CLUB_SCOPE_KEY = 'admin_club_scope';
const CLUB_CONTEXT_KEY = 'admin_club_context';
const MENU_ACCESS_KEY = 'kefu_menu_access';
const MENU_SESSION_KEY = 'kefu_menu_session_v';
const MENU_SESSION_VERSION = '27';
const DEFAULT_CLUB_ID = 'xq';

let menuAccessInflight = null;

export function getAdminClubId() {
  return localStorage.getItem(CLUB_ID_KEY) || DEFAULT_CLUB_ID;
}

export function getAdminClubScope() {
  return localStorage.getItem(CLUB_SCOPE_KEY) || 'single';
}

export function setAdminClubContext(ctx) {
  if (!ctx) return;
  localStorage.setItem(CLUB_CONTEXT_KEY, JSON.stringify(ctx));
  localStorage.setItem(CLUB_ID_KEY, ctx.club_id || DEFAULT_CLUB_ID);
  localStorage.setItem(CLUB_SCOPE_KEY, ctx.scope === 'ALL_CLUBS' ? 'all' : 'single');
}

export function mergeServerClubContext(serverCtx) {
  if (!serverCtx) return;
  const allowedIds = new Set((serverCtx.clubs || []).map((c) => c.club_id));
  const prevScope = localStorage.getItem(CLUB_SCOPE_KEY);
  const prevClubId = localStorage.getItem(CLUB_ID_KEY);

  let clubId = serverCtx.club_id || DEFAULT_CLUB_ID;
  let scopeKey = serverCtx.scope === 'ALL_CLUBS' ? 'all' : 'single';

  if (prevClubId && allowedIds.has(prevClubId)) {
    clubId = prevClubId;
    if (prevScope === 'all' && serverCtx.is_group_admin) {
      scopeKey = 'all';
    } else if (prevScope === 'single') {
      scopeKey = 'single';
    }
  } else if (prevScope === 'all' && serverCtx.is_group_admin) {
    scopeKey = 'all';
  } else if (!allowedIds.has(clubId) && allowedIds.size > 0) {
    clubId = serverCtx.club_id || [...allowedIds][0] || DEFAULT_CLUB_ID;
  }

  const merged = {
    ...serverCtx,
    club_id: clubId,
    scope: scopeKey === 'all' ? 'ALL_CLUBS' : 'SINGLE_CLUB',
  };

  if (scopeKey === 'single' && merged.assignments?.length) {
    const hit = merged.assignments.find((a) => a.club_id === clubId);
    if (hit) {
      merged.role_code = hit.role_code;
      merged.role_name = hit.role_name;
    }
  }

  if (prevClubId && prevClubId !== clubId) {
    clearMenuAccess();
  }

  setAdminClubContext(merged);
  return merged;
}

export function resetAdminClubContextOnLogin() {
  localStorage.removeItem(CLUB_ID_KEY);
  localStorage.removeItem(CLUB_SCOPE_KEY);
  localStorage.removeItem(CLUB_CONTEXT_KEY);
  clearMenuAccess();
}

export function getAdminClubContext() {
  try {
    const raw = localStorage.getItem(CLUB_CONTEXT_KEY);
    return raw ? JSON.parse(raw) : null;
  } catch {
    return null;
  }
}

export function setMenuAccess(access) {
  if (!access) return;
  localStorage.setItem(MENU_ACCESS_KEY, JSON.stringify(access));
  sessionStorage.setItem(MENU_SESSION_KEY, MENU_SESSION_VERSION);
}

export function clearMenuAccess() {
  localStorage.removeItem(MENU_ACCESS_KEY);
  sessionStorage.removeItem(MENU_SESSION_KEY);
}

export function getMenuAccess() {
  try {
    const raw = localStorage.getItem(MENU_ACCESS_KEY);
    return raw ? JSON.parse(raw) : null;
  } catch {
    return null;
  }
}

export function isMenuSessionFresh() {
  return sessionStorage.getItem(MENU_SESSION_KEY) === MENU_SESSION_VERSION;
}

export function shouldShowAllMenus(access) {
  if (!access) return false;
  if (Array.isArray(access.visible_page_ids) && access.visible_page_ids.length > 0) {
    return false;
  }
  if (Array.isArray(access.visible_paths) && access.visible_paths.length > 0) {
    return false;
  }
  if (Array.isArray(access.permission_codes) && access.permission_codes.length > 0) {
    return false;
  }
  return false;
}

/** ??? kefu_menu_definitions ???visible_paths ???? permission_codes ?? */
const KEFU_MENU_ROWS = [
  { page_id: 'finance.bankuai', parent_id: 'finance', path: '/finance/bankuai', sort_order: 11, perm_codes: ['bankuai'] },
  { page_id: 'finance.data', parent_id: 'finance', path: '/finance/data', sort_order: 12, perm_codes: ['caiwu'] },
  { page_id: 'assessment.examiner', parent_id: 'assessment', path: '/assessment/examiner', sort_order: 21, perm_codes: ['kaohepeizhi'] },
  { page_id: 'assessment.config', parent_id: 'assessment', path: '/assessment/config', sort_order: 22, perm_codes: ['kaohepeizhi'] },
  { page_id: 'assessment.record', parent_id: 'assessment', path: '/assessment/record', sort_order: 23, perm_codes: ['kaohepeizhi'] },
  { page_id: 'order.platform', parent_id: 'order', path: '/order/platform', sort_order: 31, perm_codes: ['002ab'] },
  { page_id: 'order.merchant', parent_id: 'order', path: '/order/merchant', sort_order: 32, perm_codes: ['002ac', '002ab', '003aa'] },
  { page_id: 'cross-platform.order', parent_id: 'cross-platform', path: '/cross-order', sort_order: 41, perm_codes: ['003aa'] },
  { page_id: 'cross-platform.settings', parent_id: 'cross-platform', path: '/cross-settings', sort_order: 42, perm_codes: ['003aa'] },
  { page_id: 'cross-platform.data', parent_id: 'cross-platform', path: '/cross-data', sort_order: 43, perm_codes: ['003aa'] },
  { page_id: 'cross-platform.pre', parent_id: 'cross-platform', path: '/cross-pre', sort_order: 44, perm_codes: ['003aa'] },
  { page_id: 'user.player', parent_id: 'user', path: '/user/player', sort_order: 51, perm_codes: ['001aa', '001bb', '001cc', '001dd', '001ee', '001ff', '001gg'] },
  { page_id: 'user.guanli', parent_id: 'user', path: '/user/guanli', sort_order: 52, perm_codes: ['4400a', '4400b', '4400c', '4400d', '4400e', '4400f'] },
  { page_id: 'user.shangjia', parent_id: 'user', path: '/user/shangjia', sort_order: 53, perm_codes: ['1100a', '1100b'] },
  { page_id: 'user.zuzhang', parent_id: 'user', path: '/user/zuzhang', sort_order: 54, perm_codes: ['6600a', '6600b', '6600c', '6600d', '6600e'] },
  { page_id: 'user.identity-tag', parent_id: 'user', path: '/user/identity-tag', sort_order: 55, perm_codes: ['8080a', 'sfbq666'] },
  { page_id: 'withdraw.audit', parent_id: 'withdraw', path: '/withdraw/audit', sort_order: 61, perm_codes: ['005bb'] },
  { page_id: 'withdraw.data', parent_id: 'withdraw', path: '/withdraw/data', sort_order: 63, perm_codes: ['005bb'] },
  { page_id: 'withdraw.settings', parent_id: 'withdraw', path: '/withdraw/settings', sort_order: 64, perm_codes: ['5500a', '5500b', '5500c'] },
  // 管理员：超级管理 000001 可见（不靠 perm_codes）
  { page_id: 'admin.role', parent_id: 'admin', path: '/admin/role', sort_order: 71, require_super: true },
  { page_id: 'admin.user', parent_id: 'admin', path: '/admin/user', sort_order: 74, require_super: true },
  { page_id: 'admin.operation-log', parent_id: 'admin', path: '/admin/operation-log', sort_order: 75, perm_codes: ['czrz666'] },
  { page_id: 'punishment', parent_id: '', path: '/punishment', sort_order: 80, perm_codes: ['005aa', '66693a', '66693b', '66693c', '66694c', '99933abs'] },
  { page_id: 'gongdan', parent_id: '', path: '/gongdan', sort_order: 81, perm_codes: ['gdck666', 'gdcl666'] },
  { page_id: 'product.list', parent_id: 'product', path: '/product/list', sort_order: 91, perm_codes: ['2200a'] },
  { page_id: 'product.type-zone', parent_id: 'product', path: '/product/type-zone', sort_order: 92, perm_codes: ['7007a'] },
  { page_id: 'product.turntable', parent_id: 'product', path: '/product/turntable', sort_order: 93, perm_codes: ['2200a'] },
  { page_id: 'product.data', parent_id: 'product', path: '/product/data', sort_order: 94, perm_codes: ['2200a'] },
  { page_id: 'product.fake-orders', parent_id: 'product', path: '/product/fake-orders', sort_order: 95, perm_codes: ['2200a'] },
  { page_id: 'member.list', parent_id: 'member', path: '/member/list', sort_order: 101, perm_codes: ['3300a'] },
  { page_id: 'member.data', parent_id: 'member', path: '/member/data', sort_order: 102, perm_codes: ['3300a'] },
  { page_id: 'miniapp.carousel', parent_id: 'miniapp', path: '/miniapp/carousel', sort_order: 111, perm_codes: ['8080a'] },
  { page_id: 'miniapp.assets', parent_id: 'miniapp', path: '/miniapp/assets', sort_order: 112, perm_codes: ['8080a'] },
  { page_id: 'miniapp.popup', parent_id: 'miniapp', path: '/miniapp/popup-notice', sort_order: 113, perm_codes: ['8080a'] },
  { page_id: 'miniapp.leixing', parent_id: 'miniapp', path: '/miniapp/leixing', sort_order: 115, perm_codes: ['8080a'] },
  { page_id: 'miniapp.kaohe-tags', parent_id: 'miniapp', path: '/miniapp/kaohe-tags', sort_order: 116, perm_codes: ['8080a'] },
  { page_id: 'miniapp.dashou-exam', parent_id: 'miniapp', path: '/miniapp/dashou-exam', sort_order: 117, perm_codes: ['dsks666', '8080a'] },
  { page_id: 'miniapp.rank-reward', parent_id: 'miniapp', path: '/miniapp/rank-reward', sort_order: 118, perm_codes: ['phbj666', '8080a'] },
  { page_id: 'miniapp.recharge-copy', parent_id: 'miniapp', path: '/miniapp/recharge-copy', sort_order: 119, perm_codes: ['8080a'] },
  { page_id: 'miniapp.withdraw-settings', parent_id: 'miniapp', path: '/withdraw/settings', sort_order: 114, perm_codes: ['5500a', '5500b', '5500c'] },
  { page_id: 'shop.list', parent_id: 'shop', path: '/shop/list', sort_order: 121, perm_codes: ['999a', '999b', '999c', '999d', '999e'] },
  { page_id: 'shop.withdraw', parent_id: 'shop', path: '/shop/withdraw-apply', sort_order: 122, perm_codes: ['999a', '999b', '999c', '999d', '999e'] },
  { page_id: 'shop.products', parent_id: 'shop', path: '/shop/products', sort_order: 123, perm_codes: ['999a', '999b', '999c', '999d', '999e'] },
  { page_id: 'chat.agent', parent_id: '', path: '/chat/agent', sort_order: 130, perm_codes: ['abca1', 'baac2', 'cabc3', 'cb3a2', 'bcaa4'] },
];

const KEFU_MENU_PARENT_IDS = {
  admin: ['admin.role', 'admin.data-scope', 'admin.club-config', 'admin.order-grab-share', 'admin.user', 'admin.operation-log'],
  finance: ['finance.bankuai', 'finance.data'],
  assessment: ['assessment.examiner', 'assessment.config', 'assessment.record'],
  order: ['order.platform', 'order.merchant'],
  'cross-platform': ['cross-platform.order', 'cross-platform.settings', 'cross-platform.data', 'cross-platform.pre'],
  user: ['user.player', 'user.guanli', 'user.shangjia', 'user.zuzhang', 'user.identity-tag'],
  withdraw: ['withdraw.audit', 'withdraw.data', 'withdraw.settings'],
  product: ['product.list', 'product.type-zone', 'product.turntable', 'product.data', 'product.fake-orders'],
  member: ['member.list', 'member.data'],
  miniapp: ['miniapp.carousel', 'miniapp.assets', 'miniapp.popup', 'miniapp.leixing', 'miniapp.kaohe-tags', 'miniapp.dashou-exam', 'miniapp.rank-reward', 'miniapp.recharge-copy', 'miniapp.withdraw-settings'],
  shop: ['shop.list', 'shop.withdraw', 'shop.products'],
};

function pathsFromPermissionCodes(codes) {
  if (!codes?.length) return [];
  const seen = new Set();
  const paths = [];
  for (const row of KEFU_MENU_ROWS) {
    if (!row.path) continue;
    const perms = row.perm_codes || [];
    if (!perms.some((p) => codes.includes(p))) continue;
    if (seen.has(row.path)) continue;
    seen.add(row.path);
    paths.push(row.path);
  }
  return paths;
}

function pageAllowedByCodes(pageId, codes) {
  const row = KEFU_MENU_ROWS.find((r) => r.page_id === pageId);
  if (row?.perm_codes?.some((p) => codes.includes(p))) return true;
  const children = KEFU_MENU_PARENT_IDS[pageId];
  if (!children) return false;
  return children.some((childId) => pageAllowedByCodes(childId, codes));
}

export function getEffectiveVisiblePaths(access = null) {
  const a = access || getMenuAccess();
  const paths = a?.visible_paths;
  return Array.isArray(paths) ? paths : [];
}

/**
 * 兼容尚未 seed 到服务端的新菜单：本地已定义且 canShowMenuPage 通过即可进路由。
 * 避免「侧栏看得见、点进去却被踢到默认页（如板块配置）」。
 */
export function isLocallyDefinedMenuPathAllowed(path) {
  if (!path) return false;
  const row = KEFU_MENU_ROWS.find(
    (r) => r.path && (path === r.path || path.startsWith(`${r.path}/`)),
  );
  if (!row) return false;
  return canShowMenuPage(row.page_id);
}

export function hasPermCode(access, ...codes) {
  if (!access || !codes.length) return false;
  const list = access.permission_codes || [];
  return codes.some((c) => list.includes(c));
}

export function hasMerchantOrderPerm(access) {
  return hasPermCode(access, '002ac', '002ab', '003aa');
}

export function canShowMenuPage(pageId) {
  const access = getMenuAccess();
  if (!access) return false;
  const codes = access.permission_codes || [];
  const hasSuper = !!access.is_super || codes.includes('000001');

  // 本店超级管理：管理员分组 / 角色管理 / 后台用户（不依赖服务端是否漏 seed）
  if (
    hasSuper &&
    (pageId === 'admin' || pageId === 'admin.role' || pageId === 'admin.user')
  ) {
    return true;
  }
  // 集团权限：订单互通配置（菜单 seed 未跑时本地兜底）
  if (pageId === 'admin.order-grab-share' && access.is_group_admin) {
    return true;
  }

  const ids = access?.visible_page_ids;
  if (Array.isArray(ids) && ids.length > 0) {
    if (ids.includes(pageId)) return true;
    const children = KEFU_MENU_PARENT_IDS[pageId];
    if (children && children.some((id) => ids.includes(id))) return true;
    // 兼容尚未 seed 的新菜单：本地已定义 + 用户有对应权限（或超管）
    const row = KEFU_MENU_ROWS.find((r) => r.page_id === pageId);
    if (!row) return false;
    if (access.is_super || hasSuper) {
      if (row.require_super) return true;
    }
    return pageAllowedByCodes(pageId, codes);
  }
  if (access.is_super || access.is_group_admin || hasSuper) {
    const row = KEFU_MENU_ROWS.find((r) => r.page_id === pageId);
    if (row?.require_super && hasSuper) return true;
    return !!KEFU_MENU_ROWS.find((r) => r.page_id === pageId);
  }
  return pageAllowedByCodes(pageId, codes);
}

/** 写入菜单缓存，并同步服务端校正后的 effective_club_id */
export function applyMenuAccessPayload(data) {
  if (!data) return null;
  const scope = getAdminClubScope();
  const expectedClub = getAdminClubId();
  if (
    data.effective_club_id &&
    scope !== 'all' &&
    data.effective_club_id !== expectedClub
  ) {
    const ctx = getAdminClubContext() || {};
    setAdminClubContext({
      ...ctx,
      club_id: data.effective_club_id,
      scope: 'SINGLE_CLUB',
    });
  }
  setMenuAccess(data);
  return data;
}

export function getFirstVisiblePath() {
  const paths = getEffectiveVisiblePaths();
  return paths.length > 0 ? paths[0] : null;
}

export function getDefaultLandingPath(access = null) {
  const paths = getEffectiveVisiblePaths(access);
  return paths.length > 0 ? paths[0] : null;
}

/** menu_ready=false: server seed missing; empty codes: role not bound */
export function formatNoMenuAccessMessage(access) {
  const codes = access?.permission_codes || [];
  const roles = access?.role_names || [];
  const uid = access?.yonghuid || '';
  const idHint = uid ? ` UserID=${uid}.` : '';
  if (access?.menu_ready === false && access?.menu_source === 'db') {
    return `Menu table empty.${idHint} Server: python manage.py migrate jituan && python manage.py seed_kefu_menu`;
  }
  if (!codes.length) {
    if (roles.length) {
      return `No permissions.${idHint} Roles: [${roles.join(', ')}]. Add perm kaohepeizhi to these roles in Role Mgmt.`;
    }
    return `No role on account.${idHint} Admin Users -> open THIS user (check UserID) -> Add Role -> Save -> re-login.`;
  }
  if (!getEffectiveVisiblePaths(access).length) {
    return `Perms: [${codes.join(', ')}].${idHint} No menu path from server.`;
  }
  return `Perms: [${codes.join(', ')}].${idHint} Contact admin.`;
}

export function canSwitchClubByMenu() {
  const ctx = getAdminClubContext();
  if (ctx?.can_switch_club) return true;
  const access = getMenuAccess();
  return !!access?.can_switch_club;
}

export async function syncClubContextFromServer(fetcher) {
  const prevClubId = getAdminClubId();
  try {
    const data = await fetcher();
    if (data) {
      mergeServerClubContext(data);
      if (getAdminClubId() !== prevClubId) {
        clearMenuAccess();
      }
    }
  } catch (e) {
    console.error('syncClubContextFromServer failed:', e);
  }
}

export async function ensureMenuAccess(fetcher, { force = false } = {}) {
  if (!localStorage.getItem('token')) return getMenuAccess();
  if (!force && isMenuSessionFresh() && getMenuAccess()) {
    return getMenuAccess();
  }
  if (!menuAccessInflight) {
    menuAccessInflight = (async () => {
      try {
        const data = await fetcher();
        if (data) return applyMenuAccessPayload(data);
        return getMenuAccess();
      } catch (e) {
        console.error('ensureMenuAccess failed:', e);
        return getMenuAccess();
      } finally {
        menuAccessInflight = null;
      }
    })();
  }
  return menuAccessInflight;
}

export function applyClubHeaders(config = {}) {
  const headers = { ...(config.headers || {}) };
  const clubId = getAdminClubId();
  const scope = getAdminClubScope();
  headers['X-Club-Id'] = clubId;
  if (scope === 'all') {
    headers['X-Club-Scope'] = 'all';
  }
  return { ...config, headers };
}

export const JITUAN_API = {
  kefuLogin: '/jituan/auth/kefu-login',
  meContext: '/jituan/auth/me-context',
  menuAccess: '/jituan/auth/menu-access',
  permDebug: '/jituan/auth/perm-debug',
  clubList: '/jituan/club/list',
  caiwu: '/jituan/houtai/caiwu',
  szxx: '/jituan/houtai/szxx',
  auditLog: '/jituan/houtai/audit-log',
  orderTypes: '/jituan/houtai/cwddhqlx',
  orderFinance: '/jituan/houtai/cwhqjtddsj',
  chongzhiFinance: '/jituan/houtai/cwqtczhq',
  huiyuanBankuai: '/jituan/houtai/cwhybkhq',
  huiyuanStats: '/jituan/houtai/hybkjtsj',
  userSummary: '/jituan/houtai/user-summary',
  dashouList: '/jituan/houtai/kefuhqdslb',
  guanshiList: '/jituan/houtai/hthqgslb',
  shangjiaList: '/jituan/houtai/hqsjgllb',
  shangjiaAdd: '/jituan/houtai/tjsj',
  zuzhangList: '/jituan/houtai/hthqzzlb',
  operationLog: '/jituan/houtai/hqczrz',
  withdrawGet: '/jituan/houtai/hthqtxpz',
  withdrawUpdate: '/jituan/houtai/htxgtxsz',
  lunboList: '/jituan/houtai/lunbo-list',
  lunboManage: '/jituan/houtai/lunbo-manage',
  gonggao: '/jituan/houtai/gonggao',
  rechargePageCopyGet: '/jituan/houtai/recharge-page-copy/get',
  rechargePageCopySave: '/jituan/houtai/recharge-page-copy/save',
  tupianList: '/jituan/houtai/tupian-list',
  tupianManage: '/jituan/houtai/tupian-manage',
  popupList: '/jituan/houtai/hthqtcxx',
  popupModify: '/jituan/houtai/htxgtcxx',
  penaltyStats: '/jituan/houtai/htglyhqcfsltj',
  penaltyList: '/jituan/houtai/hthqfklb',
  penaltyAction: '/jituan/houtai/glyclfk',
  penaltyPlatformAudit: '/jituan/houtai/glyptshfk',
  penaltyCreate: '/jituan/houtai/htfksc',
  kefuCfgl: '/jituan/houtai/kefu-cfgl',
  adminAssignments: '/jituan/houtai/admin-assignments',
  clubManage: '/jituan/houtai/club-manage',
  orderGrabLink: '/jituan/houtai/order-grab-link',
  paymentChannelManage: '/jituan/houtai/payment-channel-manage',
  clubCertUpload: '/jituan/houtai/club-cert-upload',
  memberList: '/jituan/houtai/hthqhylb',
  memberUpdate: '/jituan/houtai/htxghyxx',
  memberAdd: '/jituan/houtai/httjhy',
  memberCatalog: '/jituan/houtai/hthycatalog',
  memberEnable: '/jituan/houtai/hthysj',
  memberDisable: '/jituan/houtai/hthyxj',
  memberCardUpload: '/jituan/houtai/hy-card-upload',
  memberRechargeRecords: '/jituan/houtai/hy-recharge-records',
  memberBundleCreate: '/jituan/houtai/hy-bundle-create',
  identityTagList: '/jituan/houtai/identity-tag/list',
  identityTagManage: '/jituan/houtai/identity-tag/manage',
  identityTagBindList: '/jituan/houtai/identity-tag/bind-list',
  identityTagBind: '/jituan/houtai/identity-tag/bind',
  miniappIconList: '/jituan/houtai/miniapp-icon-list',
  miniappIconManage: '/jituan/houtai/miniapp-icon-manage',
  pindaoManage: '/jituan/houtai/pindao-manage',
  fakeGrabOrderList: '/jituan/houtai/fake-grab-order-list',
  fakeGrabOrderManage: '/jituan/houtai/fake-grab-order-manage',
  fakeGrabOrderAvatar: '/jituan/houtai/fake-grab-order-avatar',
  clubLeixingList: '/jituan/houtai/club-leixing-list',
  clubLeixingCatalog: '/jituan/houtai/club-leixing-catalog',
  clubLeixingEnable: '/jituan/houtai/club-leixing-enable',
  clubLeixingDisable: '/jituan/houtai/club-leixing-disable',
  clubLeixingIcon: '/jituan/houtai/club-leixing-icon',
  clubKaoheList: '/jituan/houtai/club-kaohe-list',
  clubKaoheCatalog: '/jituan/houtai/club-kaohe-catalog',
  clubKaoheEnable: '/jituan/houtai/club-kaohe-enable',
  clubKaoheDisable: '/jituan/houtai/club-kaohe-disable',
  khggl: '/jituan/houtai/khggl',
  khgglAdd: '/jituan/houtai/khggl-add',
  shgxgsj: '/jituan/houtai/shgxgsj',
  dashouExamConfig: '/jituan/houtai/dashou-exam-config',
  dashouExamQuestionList: '/jituan/houtai/dashou-exam-question-list',
  dashouExamQuestionManage: '/jituan/houtai/dashou-exam-question-manage',
  dashouExamImageManage: '/jituan/houtai/dashou-exam-image-manage',
};