"use client";

import { useState, type FormEvent } from "react";
import { useRouter } from "next/navigation";
import { signIn } from "@/lib/auth-client";

export function LoginForm({ from }: { from: string }) {
  const router = useRouter();
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  async function onSubmit(e: FormEvent) {
    e.preventDefault();
    setLoading(true);
    setError(null);

    const result = await signIn.email({
      email: email.trim(),
      password,
      callbackURL: from,
    });

    if (result.error) {
      setError(result.error.message ?? "Sai email hoặc mật khẩu.");
      setLoading(false);
      return;
    }

    router.push(from);
    router.refresh();
  }

  return (
    <form onSubmit={onSubmit} className="space-y-4">
      <div>
        <label htmlFor="email" className="block text-sm font-medium text-ink-secondary mb-1">
          Email
        </label>
        <input
          id="email"
          type="email"
          required
          autoComplete="email"
          value={email}
          onChange={(e) => setEmail(e.target.value)}
          className="w-full rounded-lg border border-stroke-subtle bg-bg-elevated px-3 py-2 text-sm text-ink-primary placeholder:text-ink-muted focus:border-brand focus:outline-none"
          placeholder="you@example.com"
        />
      </div>
      <div>
        <label htmlFor="password" className="block text-sm font-medium text-ink-secondary mb-1">
          Mật khẩu
        </label>
        <input
          id="password"
          type="password"
          required
          autoComplete="current-password"
          value={password}
          onChange={(e) => setPassword(e.target.value)}
          className="w-full rounded-lg border border-stroke-subtle bg-bg-elevated px-3 py-2 text-sm text-ink-primary placeholder:text-ink-muted focus:border-brand focus:outline-none"
        />
      </div>

      {error ? (
        <div className="rounded-lg border border-rose-500/30 bg-rose-500/10 px-3 py-2 text-sm text-rose-300">
          {error}
        </div>
      ) : null}

      <button
        type="submit"
        disabled={loading}
        className="w-full rounded-lg bg-brand text-white px-4 py-2.5 text-sm font-semibold hover:bg-brand-dark disabled:opacity-50 transition"
      >
        {loading ? "Đang đăng nhập…" : "Đăng nhập"}
      </button>
    </form>
  );
}