import type { ReactNode } from "react";
import Link from "next/link";
import { chatGPTSignInPath, chatGPTSignOutPath } from "../chatgpt-auth";
import { getCloudViewer, type CloudViewer } from "../cloud-auth";
import {
  getActiveBeta,
  getServiceStatusSnapshot,
  type ServiceStatusSnapshot,
} from "@/db/repository";
import { ConnectivityBanner } from "./ConnectivityBanner";

const serviceStatusLabels = {
  operational: "服务正常",
  maintenance: "计划维护",
  degraded: "服务降级",
  outage: "服务中断",
} as const;

export function Brand({ compact = false }: { compact?: boolean }) {
  return (
    <span className="brand-lockup">
      <span className="brand-mark" aria-hidden="true">
        <svg viewBox="0 0 40 40" role="img">
          <path d="M8 16 5 6l11 6h8L35 6l-3 10v10c0 6-5 10-12 10S8 32 8 26V16Z" />
          <path d="M14 23h.1M26 23h.1M16 29c2.4 1.8 5.6 1.8 8 0" />
        </svg>
      </span>
      {!compact && (
        <span className="brand-type">
          <strong>NekoNest</strong>
          <span>Cloud</span>
        </span>
      )}
    </span>
  );
}

export function StatusPill({
  tone = "neutral",
  children,
}: {
  tone?: "good" | "warn" | "danger" | "neutral" | "info";
  children: ReactNode;
}) {
  return <span className={`status-pill status-${tone}`}>{children}</span>;
}

export async function PublicShell({
  children,
  serviceStatus: providedServiceStatus,
}: {
  children: ReactNode;
  serviceStatus?: ServiceStatusSnapshot;
}) {
  const [viewer, beta, serviceStatus] = await Promise.all([
    getCloudViewer(),
    getActiveBeta(),
    providedServiceStatus ?? getServiceStatusSnapshot(),
  ]);
  return (
    <div className="site-shell">
      <header className="public-header">
        <div className="public-header-inner">
          <Link className="brand-link" href="/" aria-label="NekoNest Cloud 首页">
            <Brand />
          </Link>
          <nav className="public-nav" aria-label="主要导航">
            <Link href="/#how">工作原理</Link>
            <Link href="/download">下载</Link>
            <Link href="/pricing">公测</Link>
            <Link href="/trust">信任边界</Link>
            <Link href="/privacy">数据说明</Link>
            <Link href="/readiness">上线门禁</Link>
            <Link href="/status">服务状态</Link>
          </nav>
          <div className="header-actions">
            <span className="beta-chip">公开原型 · {beta ? "公测免费" : "公测已结束"}</span>
            {viewer ? (
              <Link className="button button-small button-primary" href="/dashboard">
                打开控制台
              </Link>
            ) : (
              <Link
                className="button button-small button-primary"
                href={chatGPTSignInPath("/dashboard")}
              >
                登录控制台
              </Link>
            )}
          </div>
        </div>
      </header>
      <ConnectivityBanner />
      <main>{children}</main>
      <footer className="public-footer">
        <div className="footer-grid">
          <div>
            <Brand />
            <p>把电脑上的 coding-agent，接回手机继续。</p>
          </div>
          <div>
            <strong>产品</strong>
            <Link href="/download">下载主机端</Link>
            <Link href="/pricing">免费公测</Link>
            <Link href="/trust">安全与隐私边界</Link>
            <Link href="/privacy">公测数据说明</Link>
            <Link href="/readiness">上线准备度</Link>
            <Link href="/status">服务状态</Link>
          </div>
          <div>
            <strong>边界</strong>
            <p>自托管永久免费；Cloud 不运行模型，不卖 Token，不设积分。</p>
          </div>
          <div>
            <strong>经营信息</strong>
            <p>主体与备案路径仍待确认；公测免费，收费功能暂不开放。</p>
          </div>
        </div>
        <div className="footer-bottom">
          <span>© 2026 NekoNest Cloud prototype</span>
          <span>{serviceStatusLabels[serviceStatus.status]} · 页面内容不是正式收费或合规承诺</span>
        </div>
      </footer>
    </div>
  );
}

const dashboardNav = [
  { href: "/dashboard", label: "总览", icon: "⌂" },
  { href: "/dashboard/hosts", label: "主机", icon: "▣" },
  { href: "/dashboard/billing", label: "公测权益", icon: "○" },
  { href: "/dashboard/security", label: "安全与设备", icon: "◇" },
  { href: "/dashboard/feedback", label: "问题反馈", icon: "?" },
] as const;

export async function DashboardShell({
  viewer,
  active,
  children,
  serviceStatus: providedServiceStatus,
}: {
  viewer: CloudViewer;
  active: string;
  children: ReactNode;
  serviceStatus?: ServiceStatusSnapshot;
}) {
  const serviceStatus =
    providedServiceStatus ?? (await getServiceStatusSnapshot());
  return (
    <div className="cloud-shell">
      <aside className="cloud-sidebar">
        <Link className="brand-link cloud-brand" href="/">
          <Brand />
        </Link>
        <div className="prototype-notice">
          <span className="notice-dot" />
          控制平面原型
        </div>
        <nav className="cloud-nav" aria-label="控制台导航">
          {dashboardNav.map((item) => (
            <Link
              className={active === item.href ? "active" : undefined}
              href={item.href}
              key={item.href}
            >
              <span aria-hidden="true">{item.icon}</span>
              {item.label}
            </Link>
          ))}
          {viewer.isAdmin && (
            <Link className={active === "/admin" ? "active" : undefined} href="/admin">
              <span aria-hidden="true">⚙</span>
              公测后台
            </Link>
          )}
        </nav>
        <div className="sidebar-account">
          <span className="account-avatar" aria-hidden="true">
            {viewer.displayName.slice(0, 1).toUpperCase()}
          </span>
          <span>
            <strong>{viewer.displayName}</strong>
            <small>{viewer.isLocalDemo ? "本地演示身份" : viewer.email}</small>
          </span>
          {!viewer.isLocalDemo && (
            <Link href={chatGPTSignOutPath("/")} aria-label="退出登录">
              ↗
            </Link>
          )}
        </div>
      </aside>
      <div className="cloud-main">
        <ConnectivityBanner />
        {serviceStatus.activeIncidents.length > 0 && (
          <div
            className={`service-incident-banner incident-${serviceStatus.status}`}
            role="status"
          >
            <span>
              <strong>{serviceStatusLabels[serviceStatus.status]}</strong>
              {serviceStatus.activeIncidents[0].title}
            </span>
            <Link href="/status">查看详情 →</Link>
          </div>
        )}
        {viewer.isLocalDemo && (
          <div className="demo-banner" role="status">
            当前使用本地演示身份；正式托管环境会要求登录，演示数据不会代表真实在线服务。
          </div>
        )}
        {children}
      </div>
    </div>
  );
}

export function PageHeading({
  eyebrow,
  title,
  description,
  actions,
}: {
  eyebrow?: string;
  title: string;
  description: string;
  actions?: ReactNode;
}) {
  return (
    <header className="page-heading">
      <div>
        {eyebrow && <span className="eyebrow">{eyebrow}</span>}
        <h1>{title}</h1>
        <p>{description}</p>
      </div>
      {actions && <div className="page-actions">{actions}</div>}
    </header>
  );
}

export function formatMoney(amountMinor: number, currency = "CNY") {
  return new Intl.NumberFormat("zh-CN", {
    style: "currency",
    currency,
    minimumFractionDigits: 0,
    maximumFractionDigits: 2,
  }).format(amountMinor / 100);
}

export function formatDate(value: string | null, includeTime = false) {
  if (!value) return "未设定";
  return new Intl.DateTimeFormat("zh-CN", {
    year: "numeric",
    month: "short",
    day: "numeric",
    ...(includeTime ? { hour: "2-digit", minute: "2-digit" } : {}),
  }).format(new Date(value));
}