import { useState } from 'react';
import { useHospitalStore } from '@/hooks/useHospitalStore';
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import { Shield, Lock, User } from 'lucide-react';

export function Login() {
  const { login } = useHospitalStore();
  const [dni, setDni] = 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 {
      await login(dni, password);
      window.location.reload();
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Error de autenticación');
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-100 dark:bg-gray-900 p-4">
      <Card className="w-full max-w-md">
        <CardHeader className="text-center">
          <div className="mx-auto mb-4 w-16 h-16 bg-blue-600 rounded-full flex items-center justify-center">
            <Shield className="w-8 h-8 text-white" />
          </div>
          <CardTitle className="text-2xl">Sistema de Gestión Hospitalaria</CardTitle>
          <CardDescription>Ingrese sus credenciales para acceder</CardDescription>
        </CardHeader>
        <CardContent>
          <form onSubmit={handleSubmit} className="space-y-4">
            <div className="space-y-2">
              <Label htmlFor="dni">DNI</Label>
              <div className="relative">
                <User className="absolute left-3 top-3 h-4 w-4 text-gray-400" />
                <Input
                  id="dni"
                  type="text"
                  placeholder="Ingrese su DNI"
                  value={dni}
                  onChange={(e) => setDni(e.target.value)}
                  className="pl-10"
                  required
                />
              </div>
            </div>
            
            <div className="space-y-2">
              <Label htmlFor="password">Contraseña</Label>
              <div className="relative">
                <Lock className="absolute left-3 top-3 h-4 w-4 text-gray-400" />
                <Input
                  id="password"
                  type="password"
                  placeholder="Ingrese su contraseña"
                  value={password}
                  onChange={(e) => setPassword(e.target.value)}
                  className="pl-10"
                  required
                />
              </div>
            </div>
            
            {error && (
              <div className="bg-red-50 dark:bg-red-900/30 border border-red-200 dark:border-red-800 text-red-600 dark:text-red-400 px-3 py-2 rounded-md text-sm">
                {error}
              </div>
            )}
            
            <Button type="submit" className="w-full" disabled={loading}>
              {loading ? 'Ingresando...' : 'Ingresar'}
            </Button>
          </form>
        </CardContent>
      </Card>
    </div>
  );
}