"use client";

import { useEffect, useState } from "react";
import { RefreshCcw } from "lucide-react";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { Button } from "@/components/ui/button";
import { opsApi } from "@/lib/ops-api";
import type { MembershipEntry } from "@/types/ops";

export function MembershipsPageClient() {
  const [loading, setLoading] = useState(true);
  const [memberships, setMemberships] = useState<MembershipEntry[]>([]);
  const [filter, setFilter] = useState<"all" | "paid" | "trial">("all");

  const load = async () => {
    setLoading(true);
    try {
      const data = await opsApi.memberships();
      setMemberships((data as unknown as { memberships?: MembershipEntry[] }).memberships ?? []);
    } catch { /* */ }
    setLoading(false);
  };

  useEffect(() => { void load(); }, []);

  const paid = memberships.filter((m) => !m.is_trial);
  const trials = memberships.filter((m) => m.is_trial);
  const filtered = filter === "paid" ? paid : filter === "trial" ? trials : memberships;

  const planLabel = (code?: string) => {
    if (!code) return "—";
    if (code.startsWith("signup_trial")) return "3天体验";
    if (code === "pro_monthly") return "月付";
    if (code === "pro_quarterly") return "季付";
    if (code === "pro_yearly") return "年付";
    return code;
  };

  if (loading) return <div className="text-slate-400 animate-pulse">加载中...</div>;

  return (
    <div className="space-y-6">
      <div className="flex items-center justify-between flex-wrap gap-3">
        <h1 className="text-2xl font-bold text-white">
          会员订阅 ({memberships.length})
          <span className="text-sm font-normal text-slate-400 ml-3">
            付费 {paid.length} · 体验 {trials.length}
          </span>
        </h1>
        <div className="flex gap-2">
          {(["all", "paid", "trial"] as const).map((f) => (
            <Button
              key={f}
              variant={filter === f ? "default" : "outline"}
              size="sm"
              onClick={() => setFilter(f)}
            >
              {f === "all" ? "全部" : f === "paid" ? "付费" : "体验"}
            </Button>
          ))}
          <Button variant="outline" size="sm" onClick={load} className="gap-1.5">
            <RefreshCcw className="h-3.5 w-3.5" /> 刷新
          </Button>
        </div>
      </div>
      <Card>
        <CardContent className="p-0">
          <div className="overflow-x-auto">
            <table className="w-full text-sm">
              <thead>
                <tr className="border-b border-white/10 text-left text-slate-400">
                  <th className="py-3 px-4 font-medium">类型</th>
                  <th className="py-3 px-4 font-medium">邮箱</th>
                  <th className="py-3 px-4 font-medium">方案</th>
                  <th className="py-3 px-4 font-medium">起始</th>
                  <th className="py-3 px-4 font-medium">到期</th>
                  <th className="py-3 px-4 font-medium">排队天数</th>
                </tr>
              </thead>
              <tbody>
                {filtered.map((m, i) => (
                  <tr key={m.user_id || i} className="border-b border-white/5">
                    <td className="py-2.5 px-4">
                      {m.is_trial ? (
                        <span className="inline-flex items-center rounded-full bg-amber-500/15 px-2 py-0.5 text-[11px] font-medium text-amber-400">
                          体验
                        </span>
                      ) : (
                        <span className="inline-flex items-center rounded-full bg-emerald-500/15 px-2 py-0.5 text-[11px] font-medium text-emerald-400">
                          付费
                        </span>
                      )}
                    </td>
                    <td className="py-2.5 px-4 text-white">{m.email ?? "—"}</td>
                    <td className="py-2.5 px-4">{planLabel(m.plan_code)}</td>
                    <td className="py-2.5 px-4 text-slate-400 text-xs">{m.starts_at?.slice(0, 10) ?? "—"}</td>
                    <td className="py-2.5 px-4 text-slate-400 text-xs">{m.expires_at?.slice(0, 10) ?? "—"}</td>
                    <td className="py-2.5 px-4">{m.queued_days ?? 0}</td>
                  </tr>
                ))}
                {filtered.length === 0 && (
                  <tr><td colSpan={6} className="py-8 text-center text-slate-500">暂无会员</td></tr>
                )}
              </tbody>
            </table>
          </div>
        </CardContent>
      </Card>
    </div>
  );
}