"use client";

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

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

  async function onSubmit(e: React.FormEvent) {
    e.preventDefault();
    setError(null);
    setLoading(true);
    try {
      const res = await fetch("/api/auth/login", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ email, password }),
      });
      const data = await res.json();
      if (!res.ok) {
        setError(data.error || "Login failed");
        return;
      }
      const next = params.get("next");
      if (next) {
        router.push(next);
      } else if (data.isEmployee) {
        router.push("/portal");
      } else {
        router.push("/dashboard");
      }
      router.refresh();
    } finally {
      setLoading(false);
    }
  }

  return (
    <div className="min-h-screen flex items-center justify-center bg-slate-950 px-4">
      <div className="w-full max-w-sm bg-slate-900 border border-slate-800 rounded-xl p-8 shadow-xl">
        <h1 className="text-xl font-semibold text-slate-100 mb-1">Kothay Jaba</h1>
        <p className="text-sm text-slate-400 mb-6">Employee tracking &amp; security platform</p>
        <form onSubmit={onSubmit} className="space-y-4">
          <div>
            <label className="block text-xs font-medium text-slate-400 mb-1">Email</label>
            <input
              type="email"
              autoCapitalize="none"
              autoCorrect="off"
              spellCheck={false}
              required
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              className="w-full rounded-md bg-slate-800 border border-slate-700 px-3 py-2 text-slate-100 text-sm focus:outline-none focus:ring-2 focus:ring-indigo-500"
            />
          </div>
          <div>
            <label className="block text-xs font-medium text-slate-400 mb-1">Password</label>
            <input
              type="password"
              required
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              className="w-full rounded-md bg-slate-800 border border-slate-700 px-3 py-2 text-slate-100 text-sm focus:outline-none focus:ring-2 focus:ring-indigo-500"
            />
          </div>
          {error && <p className="text-sm text-red-400">{error}</p>}
          <button
            type="submit"
            disabled={loading}
            className="w-full rounded-md bg-indigo-600 hover:bg-indigo-500 disabled:opacity-50 text-white text-sm font-medium py-2 transition"
          >
            {loading ? "Signing in..." : "Sign in"}
          </button>
        </form>
      </div>
    </div>
  );
}

export default function LoginPage() {
  return (
    <Suspense>
      <LoginForm />
    </Suspense>
  );
}