"use client";

import { useState, useTransition } from "react";
import { UserPlus } from "lucide-react";
import { Button } from "@/components/ui/button";
import { generateFamilyInvite } from "./actions";

// xuchao: 家庭管理——展示成员列表,生成一次性邀请码让其他家长注册加入
export function FamilyManage({
  familyName,
  parents,
  kids,
}: {
  familyName: string;
  parents: { id: number; name: string }[];
  kids: { id: number; name: string }[];
}) {
  const [invite, setInvite] = useState<{ code?: string; error?: string } | null>(null);
  const [pending, startTransition] = useTransition();

  const gen = () => {
    setInvite(null);
    startTransition(async () => {
      setInvite(await generateFamilyInvite());
    });
  };

  return (
    <div className="space-y-3">
      <p className="text-sm text-slate-700">
        <span className="font-semibold">{familyName}</span> · {parents.length} 位家长 · {kids.length} 个孩子
      </p>
      <div className="space-y-1.5">
        {parents.map((p) => (
          <div key={p.id} className="flex items-center justify-between rounded-lg border border-slate-200 bg-white px-3 py-2 text-sm">
            <span className="font-medium text-slate-800">{p.name}</span>
            <span className="rounded-full bg-indigo-100 px-2 py-0.5 text-xs font-medium text-indigo-700">家长</span>
          </div>
        ))}
        {kids.map((k) => (
          <div key={k.id} className="flex items-center justify-between rounded-lg border border-slate-200 bg-white px-3 py-2 text-sm">
            <span className="font-medium text-slate-800">{k.name}</span>
            <span className="rounded-full bg-slate-100 px-2 py-0.5 text-xs font-medium text-slate-500">孩子</span>
          </div>
        ))}
      </div>
      <div className="flex flex-wrap items-center gap-3">
        <Button size="sm" variant="secondary" disabled={pending} onClick={gen}>
          <UserPlus className="size-4" /> {pending ? "生成中…" : "生成邀请码"}
        </Button>
        {invite?.error && <p className="text-sm font-medium text-destructive">{invite.error}</p>}
        {invite?.code && (
          <p className="text-sm text-slate-700">
            邀请码{" "}
            <span className="font-mono text-lg font-bold tracking-widest text-indigo-600">{invite.code}</span>
            <span className="ml-1 text-xs text-muted-foreground">15 分钟有效,一次性</span>
          </p>
        )}
      </div>
    </div>
  );
}