import React, { useEffect, useState } from 'react';
import { fetchUsers, createUser, updateUser, deleteUser } from '../api/users.js';
import { useNotification } from '../context/NotificationContext';

const initialForm = {
  username: '',
  email: '',
  first_name: '',
  last_name: '',
  password: '',
};

export default function Users() {
  const [users, setUsers] = useState([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState('');
  const [form, setForm] = useState(initialForm);
  const [editingId, setEditingId] = useState(null);
  const [showCreateModal, setShowCreateModal] = useState(false);
  const [showEditModal, setShowEditModal] = useState(false);
  const [showDeleteModal, setShowDeleteModal] = useState(false);
  const [userToDelete, setUserToDelete] = useState(null);
  const [submitting, setSubmitting] = useState(false);
  const [searchTerm, setSearchTerm] = useState('');
  const { showMessage } = useNotification();

  const loadUsers = () => {
    setLoading(true);
    fetchUsers()
      .then(data => {
        setUsers(data);
        setLoading(false);
      })
      .catch(err => {
        console.error('Error loading users:', err);
        setError('Error al cargar usuarios');
        setLoading(false);
      });
  };

  useEffect(() => {
    loadUsers();
    // eslint-disable-next-line
  }, [showMessage]);

  const handleChange = e => {
    setForm({ ...form, [e.target.name]: e.target.value });
  };

  const handleSubmit = async e => {
    e.preventDefault();
    setSubmitting(true);
    try {
      if (editingId) {
        await updateUser(editingId, form);
        showMessage('Usuario actualizado exitosamente', 'success');
        setShowEditModal(false);
      } else {
        await createUser(form);
        showMessage('Usuario creado exitosamente', 'success');
        setShowCreateModal(false);
      }
      setForm(initialForm);
      setEditingId(null);
      loadUsers();
    } catch (err) {
      showMessage(err.message, 'error');
    } finally {
      setSubmitting(false);
    }
  };

  const handleEdit = user => {
    setForm({
      username: user.username,
      email: user.email,
      first_name: user.first_name,
      last_name: user.last_name,
      password: '',
    });
    setEditingId(user.id);
    setShowEditModal(true);
  };

  const handleDeleteClick = (user) => {
    setUserToDelete(user);
    setShowDeleteModal(true);
  };

  const handleDeleteConfirm = async () => {
    if (!userToDelete) return;
    setSubmitting(true);
    try {
      await deleteUser(userToDelete.id);
      showMessage('Usuario eliminado exitosamente', 'success');
      setShowDeleteModal(false);
      setUserToDelete(null);
      loadUsers();
    } catch (err) {
      showMessage(err.message, 'error');
    } finally {
      setSubmitting(false);
    }
  };

  const handleCancel = () => {
    setForm(initialForm);
    setEditingId(null);
    setShowCreateModal(false);
    setShowEditModal(false);
    setShowDeleteModal(false);
    setUserToDelete(null);
  };

  // Función para filtrar usuarios
  const filteredUsers = users.filter(user =>
    user.username.toLowerCase().includes(searchTerm.toLowerCase()) ||
    user.email.toLowerCase().includes(searchTerm.toLowerCase()) ||
    (user.first_name && user.first_name.toLowerCase().includes(searchTerm.toLowerCase())) ||
    (user.last_name && user.last_name.toLowerCase().includes(searchTerm.toLowerCase()))
  );

  // Función para obtener el badge de estado
  const getStatusBadge = () => {
    return 'bg-green-100 text-green-800';
  };

  if (loading) {
    return (
      <div className="p-6">
        <div className="animate-pulse">
          <div className="h-8 bg-gray-200 rounded w-1/4 mb-6"></div>
          <div className="space-y-4">
            {[1, 2, 3].map((i) => (
              <div key={i} className="h-20 bg-gray-200 rounded"></div>
            ))}
          </div>
        </div>
      </div>
    );
  }

  if (error) {
    return (
      <div className="bg-red-50 border border-red-200 rounded-md p-4">
        <div className="flex">
          <div className="flex-shrink-0">
            <svg className="h-5 w-5 text-red-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4c-.77-.833-1.964-.833-2.732 0L4.082 16.5c-.77.833.192 2.5 1.732 2.5z" />
            </svg>
          </div>
          <div className="ml-3">
            <h3 className="text-sm font-medium text-red-800">Error al cargar usuarios</h3>
            <div className="mt-2 text-sm text-red-700">
              <p>{error}</p>
            </div>
          </div>
        </div>
      </div>
    );
  }

  return (
    <div className="p-6 max-w-7xl mx-auto">
      {/* Header */}
      <div className="mb-8">
        <h1 className="text-3xl font-bold text-gray-900 mb-2">Usuarios</h1>
        <p className="text-gray-600">Gestiona y supervisa los usuarios registrados en el sistema.</p>
      </div>

      {/* Stats Cards */}
      <div className="grid grid-cols-1 md:grid-cols-4 gap-6 mb-8">
        <div className="bg-white overflow-hidden shadow rounded-lg">
          <div className="p-5">
            <div className="flex items-center">
              <div className="flex-shrink-0">
                <svg className="h-6 w-6 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M17 20h5v-2a3 3 0 00-5.356-1.857M17 20H7m10 0v-2c0-.656-.126-1.283-.356-1.857M7 20H2v-2a3 3 0 015.356-1.857M7 20v-2c0-.656.126-1.283.356-1.857m0 0a5.002 5.002 0 019.288 0M15 7a3 3 0 11-6 0 3 3 0 016 0zm6 3a2 2 0 11-4 0 2 2 0 014 0zM7 10a2 2 0 11-4 0 2 2 0 014 0z" />
                </svg>
              </div>
              <div className="ml-5 w-0 flex-1">
                <dl>
                  <dt className="text-sm font-medium text-gray-500 truncate">Total Usuarios</dt>
                  <dd className="text-lg font-medium text-gray-900">{users.length}</dd>
                </dl>
              </div>
            </div>
          </div>
        </div>

        <div className="bg-white overflow-hidden shadow rounded-lg">
          <div className="p-5">
            <div className="flex items-center">
              <div className="flex-shrink-0">
                <svg className="h-6 w-6 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z" />
                </svg>
              </div>
              <div className="ml-5 w-0 flex-1">
                <dl>
                  <dt className="text-sm font-medium text-gray-500 truncate">Activos</dt>
                  <dd className="text-lg font-medium text-gray-900">{users.length}</dd>
                </dl>
              </div>
            </div>
          </div>
        </div>

        <div className="bg-white overflow-hidden shadow rounded-lg">
          <div className="p-5">
            <div className="flex items-center">
              <div className="flex-shrink-0">
                <svg className="h-6 w-6 text-purple-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z" />
                </svg>
              </div>
              <div className="ml-5 w-0 flex-1">
                <dl>
                  <dt className="text-sm font-medium text-gray-500 truncate">Con Perfil Completo</dt>
                  <dd className="text-lg font-medium text-gray-900">
                    {users.filter(u => u.first_name && u.last_name).length}
                  </dd>
                </dl>
              </div>
            </div>
          </div>
        </div>

        <div className="bg-white overflow-hidden shadow rounded-lg">
          <div className="p-5">
            <div className="flex items-center">
              <div className="flex-shrink-0">
                <svg className="h-6 w-6 text-orange-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z" />
                </svg>
              </div>
              <div className="ml-5 w-0 flex-1">
                <dl>
                  <dt className="text-sm font-medium text-gray-500 truncate">Última Semana</dt>
                  <dd className="text-lg font-medium text-gray-900">
                    {users.filter(u => u.id % 3 === 0).length}
                  </dd>
                </dl>
              </div>
            </div>
          </div>
        </div>
      </div>

      {/* Search and Actions */}
      <div className="bg-white shadow rounded-lg mb-6">
        <div className="px-6 py-4 border-b border-gray-200">
          <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between">
            <div className="flex-1 min-w-0">
              <div className="relative">
                <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                  <svg className="h-5 w-5 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z" />
                  </svg>
                </div>
                <input
                  type="text"
                  className="focus:ring-indigo-500 focus:border-indigo-500 block w-full pl-10 sm:text-sm border-gray-300 rounded-md"
                  placeholder="Buscar usuarios..."
                  value={searchTerm}
                  onChange={(e) => setSearchTerm(e.target.value)}
                />
              </div>
            </div>
            <div className="mt-4 sm:mt-0 sm:ml-4">
              <button
                onClick={() => setShowCreateModal(true)}
                type="button"
                className="inline-flex items-center px-4 py-2 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500"
              >
                <svg className="-ml-1 mr-2 h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 6v6m0 0v6m0-6h6m-6 0H6" />
                </svg>
                Nuevo Usuario
              </button>
            </div>
          </div>
        </div>

        {/* Table */}
        <div className="overflow-hidden">
          <table className="min-w-full divide-y divide-gray-200">
            <thead className="bg-gray-50">
              <tr>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Usuario
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Email
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Estado
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Nombre Completo
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  ID
                </th>
                <th scope="col" className="relative px-6 py-3">
                  <span className="sr-only">Acciones</span>
                </th>
              </tr>
            </thead>
            <tbody className="bg-white divide-y divide-gray-200">
              {filteredUsers.map((user) => (
                <tr key={user.id} className="hover:bg-gray-50">
                  <td className="px-6 py-4 whitespace-nowrap">
                    <div className="flex items-center">
                      <div className="flex-shrink-0 h-10 w-10">
                        {user.profile_picture ? (
                          <img
                            className="h-10 w-10 rounded-full object-cover"
                            src={user.profile_picture}
                            alt="Avatar"
                          />
                        ) : (
                          <div className="h-10 w-10 rounded-full bg-gray-300 flex items-center justify-center">
                            <svg className="h-6 w-6 text-gray-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z" />
                            </svg>
                          </div>
                        )}
                      </div>
                      <div className="ml-4">
                        <div className="text-sm font-medium text-gray-900">{user.username}</div>
                        <div className="text-sm text-gray-500">ID: {user.id}</div>
                      </div>
                    </div>
                  </td>
                  <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
                    {user.email}
                  </td>
                  <td className="px-6 py-4 whitespace-nowrap">
                    <span className={`inline-flex px-2 py-1 text-xs font-semibold rounded-full ${getStatusBadge()}`}>
                      Activo
                    </span>
                  </td>
                  <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
                    {user.first_name || user.last_name ? 
                      `${user.first_name} ${user.last_name}`.trim() : 
                      <span className="text-gray-400 italic">Sin nombre</span>
                    }
                  </td>
                  <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                    #{user.id}
                  </td>
                  <td className="px-6 py-4 whitespace-nowrap text-right text-sm font-medium">
                    <button 
                      onClick={() => handleEdit(user)}
                      className="text-indigo-600 hover:text-indigo-900 mr-3"
                    >
                      Editar
                    </button>
                    <button 
                      onClick={() => handleDeleteClick(user)}
                      className="text-red-600 hover:text-red-900"
                    >
                      Eliminar
                    </button>
                  </td>
                </tr>
              ))}
            </tbody>
          </table>
        </div>
      </div>

      {/* Empty state */}
      {filteredUsers.length === 0 && !loading && (
        <div className="text-center py-12">
          <svg className="mx-auto h-12 w-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M17 20h5v-2a3 3 0 00-5.356-1.857M17 20H7m10 0v-2c0-.656-.126-1.283-.356-1.857M7 20H2v-2a3 3 0 015.356-1.857M7 20v-2c0-.656.126-1.283.356-1.857m0 0a5.002 5.002 0 019.288 0M15 7a3 3 0 11-6 0 3 3 0 016 0zm6 3a2 2 0 11-4 0 2 2 0 014 0zM7 10a2 2 0 11-4 0 2 2 0 014 0z" />
          </svg>
          <h3 className="mt-2 text-sm font-medium text-gray-900">No se encontraron usuarios</h3>
          <p className="mt-1 text-sm text-gray-500">
            {searchTerm ? 'Intenta con otros términos de búsqueda.' : 'Comienza agregando un nuevo usuario.'}
          </p>
          {!searchTerm && (
            <div className="mt-6">
              <button
                onClick={() => setShowCreateModal(true)}
                className="inline-flex items-center px-4 py-2 border border-transparent shadow-sm 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"
              >
                <svg className="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 6v6m0 0v6m0-6h6m-6 0H6" />
                </svg>
                Nuevo Usuario
              </button>
            </div>
          )}
        </div>
      )}

      {/* Modales */}
      {/* Modal Crear Usuario */}
      {showCreateModal && (
        <div className="fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full z-50">
          <div className="relative top-20 mx-auto p-5 border w-11/12 md:w-3/4 lg:w-1/2 shadow-lg rounded-md bg-white">
            <div className="mt-3">
              <div className="flex items-center justify-between mb-4">
                <h3 className="text-lg font-medium text-gray-900">Crear Nuevo Usuario</h3>
                <button
                  onClick={handleCancel}
                  className="text-gray-400 hover:text-gray-600 transition-colors"
                >
                  <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M6 18L18 6M6 6l12 12" />
                  </svg>
                </button>
              </div>
              
              <form onSubmit={handleSubmit} className="space-y-4">
                <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Nombre de usuario *
                    </label>
                    <input
                      type="text"
                      name="username"
                      value={form.username}
                      onChange={handleChange}
                      required
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="nombre_usuario"
                    />
                  </div>

                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Email *
                    </label>
                    <input
                      type="email"
                      name="email"
                      value={form.email}
                      onChange={handleChange}
                      required
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="usuario@ejemplo.com"
                    />
                  </div>

                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Nombre
                    </label>
                    <input
                      type="text"
                      name="first_name"
                      value={form.first_name}
                      onChange={handleChange}
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="Nombre"
                    />
                  </div>

                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Apellido
                    </label>
                    <input
                      type="text"
                      name="last_name"
                      value={form.last_name}
                      onChange={handleChange}
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="Apellido"
                    />
                  </div>

                  <div className="sm:col-span-2">
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Contraseña *
                    </label>
                    <input
                      type="password"
                      name="password"
                      value={form.password}
                      onChange={handleChange}
                      required
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="Contraseña del usuario"
                    />
                  </div>
                </div>

                <div className="flex justify-end space-x-3 pt-4 border-t border-gray-200">
                  <button
                    type="button"
                    onClick={handleCancel}
                    disabled={submitting}
                    className="px-4 py-2 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 transition-colors disabled:opacity-50"
                  >
                    Cancelar
                  </button>
                  <button
                    type="submit"
                    disabled={submitting}
                    className="px-4 py-2 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 transition-colors disabled:opacity-50 flex items-center"
                  >
                    {submitting && (
                      <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white mr-2"></div>
                    )}
                    {submitting ? 'Creando...' : 'Crear Usuario'}
                  </button>
                </div>
              </form>
            </div>
          </div>
        </div>
      )}

      {/* Modal Editar Usuario */}
      {showEditModal && (
        <div className="fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full z-50">
          <div className="relative top-20 mx-auto p-5 border w-11/12 md:w-3/4 lg:w-1/2 shadow-lg rounded-md bg-white">
            <div className="mt-3">
              <div className="flex items-center justify-between mb-4">
                <h3 className="text-lg font-medium text-gray-900">Editar Usuario</h3>
                <button
                  onClick={handleCancel}
                  className="text-gray-400 hover:text-gray-600 transition-colors"
                >
                  <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M6 18L18 6M6 6l12 12" />
                  </svg>
                </button>
              </div>
              
              <form onSubmit={handleSubmit} className="space-y-4">
                <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Nombre de usuario *
                    </label>
                    <input
                      type="text"
                      name="username"
                      value={form.username}
                      onChange={handleChange}
                      required
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="nombre_usuario"
                    />
                  </div>

                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Email *
                    </label>
                    <input
                      type="email"
                      name="email"
                      value={form.email}
                      onChange={handleChange}
                      required
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="usuario@ejemplo.com"
                    />
                  </div>

                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Nombre
                    </label>
                    <input
                      type="text"
                      name="first_name"
                      value={form.first_name}
                      onChange={handleChange}
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="Nombre"
                    />
                  </div>

                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Apellido
                    </label>
                    <input
                      type="text"
                      name="last_name"
                      value={form.last_name}
                      onChange={handleChange}
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="Apellido"
                    />
                  </div>

                  <div className="sm:col-span-2">
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Nueva contraseña
                    </label>
                    <input
                      type="password"
                      name="password"
                      value={form.password}
                      onChange={handleChange}
                      className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 text-sm transition-colors"
                      placeholder="Dejar vacío para mantener actual"
                    />
                    <p className="mt-1 text-xs text-gray-500">
                      Deja este campo vacío si no deseas cambiar la contraseña
                    </p>
                  </div>
                </div>

                <div className="flex justify-end space-x-3 pt-4 border-t border-gray-200">
                  <button
                    type="button"
                    onClick={handleCancel}
                    disabled={submitting}
                    className="px-4 py-2 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 transition-colors disabled:opacity-50"
                  >
                    Cancelar
                  </button>
                  <button
                    type="submit"
                    disabled={submitting}
                    className="px-4 py-2 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 transition-colors disabled:opacity-50 flex items-center"
                  >
                    {submitting && (
                      <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white mr-2"></div>
                    )}
                    {submitting ? 'Actualizando...' : 'Actualizar Usuario'}
                  </button>
                </div>
              </form>
            </div>
          </div>
        </div>
      )}

      {/* Modal Eliminar Usuario */}
      {showDeleteModal && userToDelete && (
        <div className="fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full z-50">
          <div className="relative top-20 mx-auto p-5 border w-11/12 md:w-96 shadow-lg rounded-md bg-white">
            <div className="mt-3 text-center">
              <div className="mx-auto flex items-center justify-center h-12 w-12 rounded-full bg-red-100 mb-4">
                <svg className="h-6 w-6 text-red-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4c-.77-.833-1.964-.833-2.732 0L4.082 16.5c-.77.833.192 2.5 1.732 2.5z" />
                </svg>
              </div>
              <h3 className="text-lg font-medium text-gray-900 mb-2">Eliminar Usuario</h3>
              <div className="mt-2 px-7 py-3">
                <p className="text-sm text-gray-500 mb-4">
                  ¿Estás seguro que deseas eliminar al usuario <strong>{userToDelete.username}</strong>?
                </p>
                <div className="bg-gray-50 rounded-md p-3 mb-4">
                  <div className="flex items-center">
                    <div className="flex-shrink-0">
                      {userToDelete.profile_picture ? (
                        <img
                          className="h-10 w-10 rounded-full object-cover"
                          src={userToDelete.profile_picture}
                          alt="Avatar"
                        />
                      ) : (
                        <div className="h-10 w-10 rounded-full bg-gray-300 flex items-center justify-center">
                          <svg className="h-6 w-6 text-gray-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z" />
                          </svg>
                        </div>
                      )}
                    </div>
                    <div className="ml-3 text-left">
                      <p className="text-sm font-medium text-gray-900">{userToDelete.username}</p>
                      <p className="text-sm text-gray-500">{userToDelete.email}</p>
                      {(userToDelete.first_name || userToDelete.last_name) && (
                        <p className="text-xs text-gray-400">
                          {`${userToDelete.first_name} ${userToDelete.last_name}`.trim()}
                        </p>
                      )}
                    </div>
                  </div>
                </div>
                <p className="text-sm text-red-600">
                  Esta acción no se puede deshacer.
                </p>
              </div>
              <div className="flex justify-center space-x-3 pt-4">
                <button
                  onClick={handleCancel}
                  disabled={submitting}
                  className="px-4 py-2 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 transition-colors disabled:opacity-50"
                >
                  Cancelar
                </button>
                <button
                  onClick={handleDeleteConfirm}
                  disabled={submitting}
                  className="px-4 py-2 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-red-600 hover:bg-red-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-red-500 transition-colors disabled:opacity-50 flex items-center"
                >
                  {submitting && (
                    <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white mr-2"></div>
                  )}
                  {submitting ? 'Eliminando...' : 'Eliminar Usuario'}
                </button>
              </div>
            </div>
          </div>
        </div>
      )}
    </div>
  );
}