import { redirect } from "next/navigation";

import { getRequestOrigin } from "@/lib/request-origin";
import { buildSubscriptionUrl, describeRemainingTraffic } from "@/lib/subscription";
import { requireUserSession } from "@/lib/session";
import { formatBytes, getUserById } from "@/lib/store";

export default async function MePage() {
  const session = await requireUserSession();
  const [user, origin] = await Promise.all([
    getUserById(session.user_id),
    getRequestOrigin(),
  ]);

  if (!user) {
    redirect("/login");
  }

  return (
    <main className="login-shell">
      <section className="login-card wide-card">
        <div className="hero-panel hero-panel--compact">
          <div className="hero-copy">
            <span className="eyebrow">SELF SERVICE</span>
            <h1>{user.username}</h1>
            <p className="page-lede">
              已用 {formatBytes(user.used_tx_bytes + user.used_rx_bytes)}，{describeRemainingTraffic(user)}
            </p>
            <div className="badge-row">
              <span className={`status-pill ${user.enabled ? "status-pill--ok" : "status-pill--danger"}`}>
                {user.enabled ? "已启用" : "已禁用"}
              </span>
              <span className="status-pill status-pill--neutral">
                {user.expires_at ?? "长期有效"}
              </span>
            </div>
          </div>
          <div className="hero-aside">
            <div className="stat-tile">
              <span>auth_id</span>
              <strong className="mono break-all">{user.auth_id}</strong>
            </div>
            <div className="stat-tile">
              <span>订阅链接</span>
              <strong className="mono break-all">
                {user.subscription_token
                  ? buildSubscriptionUrl(user.subscription_token, origin)
                  : "暂不可用"}
              </strong>
            </div>
          </div>
        </div>
        <div className="summary-grid">
          <div className="metric-inline">
            <span>上传</span>
            <strong>{formatBytes(user.used_tx_bytes)}</strong>
          </div>
          <div className="metric-inline">
            <span>下载</span>
            <strong>{formatBytes(user.used_rx_bytes)}</strong>
          </div>
          <div className="metric-inline">
            <span>剩余额度</span>
            <strong>{describeRemainingTraffic(user)}</strong>
          </div>
        </div>
        <form action="/logout" method="post">
          <button className="ghost-button" type="submit">
            退出登录
          </button>
        </form>
      </section>
    </main>
  );
}