'use client';

import { useState } from 'react';
import { useRouter } from 'next/navigation';
import { loginAction } from './actions';

export default function LoginPage() {
  const router = useRouter();
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const [error, setError] = useState('');
  const [loading, setLoading] = useState(false);

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

    try {
      const result = await loginAction(email, password);

      if (result.error) {
        setError(result.error);
        setLoading(false);
        return;
      }

      if (result.success) {
        router.push('/main/dashboard');
      }
    } catch (err) {
      setError('An unexpected error occurred');
      setLoading(false);
    }
  };

  return (
    <div className="min-h-screen bg-[#0A0A0A] flex items-center justify-center px-4">
      <div className="w-full max-w-md">
        <div className="bg-zinc-900 rounded border border-zinc-800 shadow-2xl">
          <div className="flex flex-col space-y-2 p-8 text-center">
            <h1 className="text-3xl font-bold leading-none tracking-tight text-white">
              Workout Planner
            </h1>
            <p className="text-xs text-zinc-500 mt-2 uppercase tracking-widest">
              Track. Lift. Dominate.
            </p>
          </div>

          <div className="p-8 pt-6">
            <form onSubmit={handleSubmit} className="space-y-5">
              <div className="space-y-2">
                <label htmlFor="email" className="text-xs font-semibold text-white uppercase tracking-wider">
                  Email
                </label>
                <input
                  id="email"
                  type="email"
                  placeholder="you@example.com"
                  value={email}
                  onChange={(e) => setEmail(e.target.value)}
                  required
                  className="w-full px-4 py-2.5 rounded border border-zinc-700 bg-zinc-800 text-white placeholder:text-zinc-500 focus:outline-none focus:ring-2 focus:ring-white focus:ring-offset-0 focus:border-white transition-all"
                  disabled={loading}
                />
              </div>

              <div className="space-y-2">
                <label htmlFor="password" className="text-xs font-semibold text-white uppercase tracking-wider">
                  Password
                </label>
                <input
                  id="password"
                  type="password"
                  placeholder="••••••••"
                  value={password}
                  onChange={(e) => setPassword(e.target.value)}
                  required
                  className="w-full px-4 py-2.5 rounded border border-zinc-700 bg-zinc-800 text-white placeholder:text-zinc-500 focus:outline-none focus:ring-2 focus:ring-white focus:ring-offset-0 focus:border-white transition-all"
                  disabled={loading}
                />
              </div>

              {error && (
                <div className="rounded bg-red-900/50 px-4 py-3 border border-red-800 text-sm text-red-400">
                  {error}
                </div>
              )}

              <button
                type="submit"
                disabled={loading}
                className="w-full py-2.5 px-4 rounded bg-white text-black font-bold text-sm uppercase tracking-wider transition-all duration-200 hover:bg-gray-100 disabled:bg-zinc-700 disabled:text-zinc-500 disabled:cursor-not-allowed"
              >
                {loading ? 'Signing in...' : 'Sign In'}
              </button>
            </form>
          </div>
        </div>

        <p className="text-center text-xs text-zinc-600 mt-6 uppercase tracking-wider">
          Demo: admin@example.com / password
        </p>
      </div>
    </div>
  );
}
