"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";

export default function RegisterPage() {
  const [email, setEmail] = useState("");
  const [name, setName] = useState("");
  const [password, setPassword] = useState("");
  const [isLoading, setIsLoading] = useState(false);
  const router = useRouter();

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setIsLoading(true);

    try {
      const response = await fetch("/api/register", {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
        },
        body: JSON.stringify({ email, name, password }),
      });

      if (response.ok) {
        alert("注册成功！请登录");
        router.push("/login");
      } else {
        const result = await response.json();
        const errorMessage =
          result.error?.message || result.error || "注册失败，请重试";
        alert(errorMessage);
      }
    } catch (err) {
      alert("注册失败，请重试");
    } finally {
      setIsLoading(false);
    }
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50 py-12 px-4 sm:px-6 lg:px-8">
      <div className="max-w-md w-full space-y-8">
        <div>
          <h2 className="mt-6 text-center text-3xl font-extrabold text-gray-900">
            注册账户
          </h2>
        </div>
        <form className="mt-8 space-y-6" onSubmit={handleSubmit}>
          <div className="rounded-md shadow-sm -space-y-px">
            <div>
              <input
                type="text"
                required
                className="appearance-none rounded-none relative block w-full px-3 py-2 border border-gray-300 placeholder-gray-500 text-gray-900 rounded-t-md focus:outline-none focus:ring-indigo-500 focus:border-indigo-500 focus:z-10 sm:text-sm"
                placeholder="姓名"
                value={name}
                onChange={(e) => setName(e.target.value)}
              />
            </div>
            <div>
              <input
                type="email"
                required
                className="appearance-none rounded-none relative block w-full px-3 py-2 border border-gray-300 placeholder-gray-500 text-gray-900 focus:outline-none focus:ring-indigo-500 focus:border-indigo-500 focus:z-10 sm:text-sm"
                placeholder="邮箱地址"
                value={email}
                onChange={(e) => setEmail(e.target.value)}
              />
            </div>
            <div>
              <input
                type="password"
                required
                className="appearance-none rounded-none relative block w-full px-3 py-2 border border-gray-300 placeholder-gray-500 text-gray-900 rounded-b-md focus:outline-none focus:ring-indigo-500 focus:border-indigo-500 focus:z-10 sm:text-sm"
                placeholder="密码"
                value={password}
                onChange={(e) => setPassword(e.target.value)}
              />
            </div>
          </div>

          <div>
            <button
              type="submit"
              disabled={isLoading}
              className="group relative w-full flex justify-center py-2 px-4 border border-transparent text-sm font-medium rounded-md text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 disabled:opacity-50"
            >
              {isLoading ? "注册中..." : "注册"}
            </button>
          </div>

          <div className="text-center">
            <a
              href="/login"
              className="font-medium text-indigo-600 hover:text-indigo-500"
            >
              已有账户？登录
            </a>
          </div>
        </form>
      </div>
    </div>
  );
}