'use client';
/**
 * 控制台外壳 - 侧边栏导航（4 标签）+ 配额提醒横幅 + 主区头部 + 面板切换
 * 客户端组件：管理 activeTab 与 bannerOpen 状态，承载各面板
 * 会话：读取 localStorage（dotouch_user / dotouch_token），未登录跳转登录弹窗
 */
import { useEffect, useState } from 'react';
import { useRouter } from 'next/navigation';
import { useLocale, useTranslations } from 'next-intl';
import { BrandLogo } from '@/components/BrandLogo';
import { OverviewPanel } from './OverviewPanel';
import { KeysPanel } from './KeysPanel';
import { WalletPanel } from './WalletPanel';
import { UsagePanel } from './UsagePanel';
import { ReferralPanel } from './ReferralPanel';
import { cls } from './ui';

/** 演示环境 API 地址（生产替换为真实网关域名） */
const API_BASE = process.env['NEXT_PUBLIC_API_URL'] || 'http://localhost:8081/v1';

/** 侧边导航项（图标 + i18n 标签键） */
const tabs = [
  { id: 'overview', icon: '📊', labelKey: 'c_overview' },
  { id: 'keys', icon: '🔑', labelKey: 'c_keys' },
  { id: 'wallet', icon: '💳', labelKey: 'c_wallet' },
  { id: 'usage', icon: '📈', labelKey: 'c_usage' },
  { id: 'referral', icon: '🤝', labelKey: 'c_referral' },
] as const;

type Tab = (typeof tabs)[number]['id'];

export function ConsoleShell() {
  const t = useTranslations();
  const locale = useLocale();
  const router = useRouter();
  const [activeTab, setActiveTab] = useState<Tab>('overview');
  // 配额提醒横幅默认隐藏，由总览面板的演示开关触发
  const [bannerOpen, setBannerOpen] = useState(false);
  const [userEmail, setUserEmail] = useState<string | null>(null);
  const [balanceCents, setBalanceCents] = useState<number | null>(null);

  // 会话检查：读取本地登录态，未登录跳转官网登录弹窗
  useEffect(() => {
    let email: string | null = null;
    let token: string | null = null;
    try {
      email = localStorage.getItem('dotouch_user');
      token = localStorage.getItem('dotouch_token');
    } catch { /* 忽略 */ }
    if (!email || !token) {
      router.replace(`/${locale}?auth=login`);
      return;
    }
    setUserEmail(email);
    // 拉取真实余额
    fetch(`${API_BASE}/wallet`, {
      headers: { Authorization: `Bearer ${token}` },
    })
      .then((r) => r.json().catch(() => null))
      .then((data) => {
        if (data && typeof data.balanceCents === 'number') {
          setBalanceCents(data.balanceCents);
        }
      })
      .catch(() => { /* 余额获取失败不阻塞页面 */ });
  }, [locale, router]);

  const logout = () => {
    try {
      localStorage.removeItem('dotouch_token');
      localStorage.removeItem('dotouch_user');
    } catch { /* 忽略 */ }
    router.push(`/${locale}`);
  };

  const activeLabel = t(tabs.find((tab) => tab.id === activeTab)!.labelKey);

  return (
    <div className="flex w-full flex-1">
      {/* ══ 侧边栏 ══ */}
      <aside className="flex shrink-0 flex-col border-b border-white/[0.08] bg-brand-card min-[860px]:sticky min-[860px]:top-0 min-[860px]:h-screen min-[860px]:w-[236px] min-[860px]:border-b-0 min-[860px]:border-r min-[860px]:border-white/[0.08]">
        {/* 品牌 Logo（桌面端） */}
        <div className="hidden border-b border-white/[0.08] px-[10px] pb-[18px] pt-5 min-[860px]:block">
          <BrandLogo idPrefix="console-side" className="h-[34px] w-auto" />
        </div>

        {/* 导航：移动端横向 / 桌面端纵向 */}
        <nav className="flex flex-1 flex-wrap gap-1 p-3.5 min-[860px]:flex-col min-[860px]:flex-nowrap">
          {tabs.map((tab) => (
            <button
              key={tab.id}
              type="button"
              onClick={() => setActiveTab(tab.id)}
              className={`flex items-center gap-2.5 rounded-[10px] px-3 py-[11px] text-sm transition-colors ${
                activeTab === tab.id
                  ? 'bg-[rgba(124,92,255,.15)] font-semibold text-brand-text'
                  : 'text-brand-muted hover:bg-[rgba(124,92,255,.08)] hover:text-brand-text'
              }`}
            >
              <span className="w-5 text-center">{tab.icon}</span>
              <span>{t(tab.labelKey)}</span>
            </button>
          ))}
        </nav>

        {/* 用户区：真实登录邮箱 + 余额 + 退出（桌面端） */}
        <div className="hidden border-t border-white/[0.08] px-3 pb-3 pt-3.5 min-[860px]:block">
          <div className="break-all text-[12.5px] text-brand-muted">{userEmail ?? '…'}</div>
          <div className="mt-1 text-base font-extrabold">
            {balanceCents !== null ? `$${(balanceCents / 100).toFixed(2)}` : '$—'}
          </div>
          <button
            type="button"
            onClick={logout}
            className="mt-2 w-full rounded-lg border border-white/[0.08] bg-brand-card2 px-3 py-1.5 text-xs text-brand-muted transition-colors hover:border-[rgba(255,107,107,.4)] hover:text-[#FF8A8A]"
          >
            {t('c_logout') ?? '退出登录'}
          </button>
        </div>
      </aside>

      {/* ══ 主区 ══ */}
      <main className="min-w-0 flex-1 px-5 pb-[60px] pt-[26px] min-[860px]:px-8">
        {/* 配额提醒横幅（默认隐藏，演示开关触发） */}
        {bannerOpen && (
          <div className="mb-[18px] flex items-center gap-2.5 rounded-xl border border-[rgba(255,194,77,.4)] bg-[rgba(255,194,77,.1)] px-[18px] py-3 text-[13px] text-brand-gold">
            <span>⚠️</span>
            <span className="flex-1">{t('q_banner_80')}</span>
            <button
              type="button"
              aria-label="Close"
              onClick={() => setBannerOpen(false)}
              className="text-brand-gold/70 transition-colors hover:text-brand-gold"
            >
              ✕
            </button>
          </div>
        )}

        {/* 主区头部：当前标签标题 + 欢迎语 + 创建 Key 按钮 */}
        <div className="mb-6 flex flex-wrap items-center justify-between gap-3">
          <div>
            <h1 className="text-[22px] font-extrabold">{activeLabel}</h1>
            <div className="mt-[3px] text-[13px] text-brand-muted">{t('c_welcome')}</div>
          </div>
          <button
            type="button"
            onClick={() => setActiveTab('keys')}
            className={cls.btnPrimary}
          >
            {t('c_create_key')}
          </button>
        </div>

        {/* 面板切换 */}
        {activeTab === 'overview' && (
          <OverviewPanel onToggleBanner={() => setBannerOpen((v) => !v)} />
        )}
        {activeTab === 'keys' && <KeysPanel />}
        {activeTab === 'wallet' && <WalletPanel />}
        {activeTab === 'usage' && <UsagePanel />}
        {activeTab === 'referral' && <ReferralPanel />}
      </main>
    </div>
  );
}