import { useState, useEffect } from 'react';
import { useHasPermission } from '../hooks/usePermissions';
import ProtectedRoute from './ProtectedRoute';
import PageHeader from './PageHeader';

const API_BASE = import.meta.env.VITE_API_URL || 'http://localhost:3001';

interface User {
  id: number;
  email: string;
  username: string;
  display_name: string | null;
  is_active: boolean;
  email_verified: boolean;
  created_at: string;
  last_login: string | null;
  roles: Array<{ id: number; name: string; description: string | null }>;
}

interface Role {
  id: number;
  name: string;
  description: string | null;
}

export default function UserManagement() {
  const [users, setUsers] = useState<User[]>([]);
  const [roles, setRoles] = useState<Role[]>([]);
  const [isLoading, setIsLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);
  const [success, setSuccess] = useState<string | null>(null);
  const [showCreateModal, setShowCreateModal] = useState(false);
  const [showPasswordModal, setShowPasswordModal] = useState(false);
  const [selectedUser, setSelectedUser] = useState<User | null>(null);
  const [searchTerm, setSearchTerm] = useState('');
  // const [expandedUser, setExpandedUser] = useState<number | null>(null); // Unused for now
  const [actionMenuOpen, setActionMenuOpen] = useState<number | null>(null);

  const hasManageUsers = useHasPermission('manage_users');

  useEffect(() => {
    if (hasManageUsers) {
      fetchUsers();
      fetchRoles();
    }
  }, [hasManageUsers]);

  // Close action menu when clicking outside
  useEffect(() => {
    const handleClickOutside = () => {
      setActionMenuOpen(null);
    };
    if (actionMenuOpen !== null) {
      document.addEventListener('click', handleClickOutside);
      return () => document.removeEventListener('click', handleClickOutside);
    }
  }, [actionMenuOpen]);

  const fetchUsers = async () => {
    try {
      const response = await fetch(`${API_BASE}/api/users`, {
        credentials: 'include',
      });
      if (!response.ok) throw new Error('Failed to fetch users');
      const data = await response.json();
      setUsers(data);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Failed to load users');
    } finally {
      setIsLoading(false);
    }
  };

  const fetchRoles = async () => {
    try {
      const response = await fetch(`${API_BASE}/api/roles`, {
        credentials: 'include',
      });
      if (!response.ok) throw new Error('Failed to fetch roles');
      const data = await response.json();
      setRoles(data);
    } catch (err) {
      console.error('Failed to fetch roles:', err);
    }
  };

  const showSuccess = (message: string) => {
    setSuccess(message);
    setTimeout(() => setSuccess(null), 5000);
  };

  const showError = (message: string) => {
    setError(message);
    setTimeout(() => setError(null), 5000);
  };

  const handleCreateUser = async (e: React.FormEvent<HTMLFormElement>) => {
    e.preventDefault();
    setError(null);
    const formData = new FormData(e.currentTarget);
    const email = formData.get('email') as string;
    const username = formData.get('username') as string;
    const displayName = formData.get('display_name') as string;
    const sendInvitation = formData.get('send_invitation') === 'on';

    try {
      const response = await fetch(`${API_BASE}/api/users`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        credentials: 'include',
        body: JSON.stringify({
          email,
          username,
          display_name: displayName || null,
          send_invitation: sendInvitation,
        }),
      });

      if (!response.ok) {
        const data = await response.json();
        throw new Error(data.error || 'Failed to create user');
      }

      setShowCreateModal(false);
      showSuccess('Gebruiker succesvol aangemaakt');
      fetchUsers();
      (e.target as HTMLFormElement).reset();
    } catch (err) {
      showError(err instanceof Error ? err.message : 'Failed to create user');
    }
  };

  const handleInviteUser = async (userId: number) => {
    try {
      const response = await fetch(`${API_BASE}/api/users/${userId}/invite`, {
        method: 'POST',
        credentials: 'include',
      });

      if (!response.ok) {
        const data = await response.json();
        throw new Error(data.error || 'Failed to send invitation');
      }

      showSuccess('Uitnodiging succesvol verzonden');
      setActionMenuOpen(null);
    } catch (err) {
      showError(err instanceof Error ? err.message : 'Failed to send invitation');
    }
  };

  const handleToggleActive = async (userId: number, isActive: boolean) => {
    try {
      const response = await fetch(`${API_BASE}/api/users/${userId}/activate`, {
        method: 'PUT',
        headers: { 'Content-Type': 'application/json' },
        credentials: 'include',
        body: JSON.stringify({ is_active: !isActive }),
      });

      if (!response.ok) throw new Error('Failed to update user');
      showSuccess(`Gebruiker ${!isActive ? 'geactiveerd' : 'gedeactiveerd'}`);
      fetchUsers();
      setActionMenuOpen(null);
    } catch (err) {
      showError(err instanceof Error ? err.message : 'Failed to update user');
    }
  };

  const handleAssignRole = async (userId: number, roleId: number) => {
    try {
      const response = await fetch(`${API_BASE}/api/users/${userId}/roles`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        credentials: 'include',
        body: JSON.stringify({ role_id: roleId }),
      });

      if (!response.ok) throw new Error('Failed to assign role');
      showSuccess('Rol toegewezen');
      fetchUsers();
    } catch (err) {
      showError(err instanceof Error ? err.message : 'Failed to assign role');
    }
  };

  const handleRemoveRole = async (userId: number, roleId: number) => {
    try {
      const response = await fetch(`${API_BASE}/api/users/${userId}/roles/${roleId}`, {
        method: 'DELETE',
        credentials: 'include',
      });

      if (!response.ok) throw new Error('Failed to remove role');
      showSuccess('Rol verwijderd');
      fetchUsers();
    } catch (err) {
      showError(err instanceof Error ? err.message : 'Failed to remove role');
    }
  };

  const handleDeleteUser = async (userId: number) => {
    if (!confirm('Weet je zeker dat je deze gebruiker wilt verwijderen? Deze actie kan niet ongedaan worden gemaakt.')) return;

    try {
      const response = await fetch(`${API_BASE}/api/users/${userId}`, {
        method: 'DELETE',
        credentials: 'include',
      });

      if (!response.ok) throw new Error('Failed to delete user');
      showSuccess('Gebruiker succesvol verwijderd');
      fetchUsers();
      setActionMenuOpen(null);
    } catch (err) {
      showError(err instanceof Error ? err.message : 'Failed to delete user');
    }
  };

  const handleVerifyEmail = async (userId: number) => {
    if (!confirm('Weet je zeker dat je het e-mailadres van deze gebruiker wilt verifiëren?')) return;

    try {
      const response = await fetch(`${API_BASE}/api/users/${userId}/verify-email`, {
        method: 'PUT',
        credentials: 'include',
      });

      if (!response.ok) {
        const data = await response.json();
        throw new Error(data.error || 'Failed to verify email');
      }

      showSuccess('E-mailadres succesvol geverifieerd');
      fetchUsers();
      setActionMenuOpen(null);
    } catch (err) {
      showError(err instanceof Error ? err.message : 'Failed to verify email');
    }
  };

  const handleSetPassword = async (e: React.FormEvent<HTMLFormElement>) => {
    e.preventDefault();
    if (!selectedUser) return;
    setError(null);

    const formData = new FormData(e.currentTarget);
    const password = formData.get('password') as string;
    const confirmPassword = formData.get('confirm_password') as string;

    if (password !== confirmPassword) {
      showError('Wachtwoorden komen niet overeen');
      return;
    }

    if (password.length < 8) {
      showError('Wachtwoord moet minimaal 8 tekens lang zijn');
      return;
    }

    try {
      const response = await fetch(`${API_BASE}/api/users/${selectedUser.id}/password`, {
        method: 'PUT',
        headers: { 'Content-Type': 'application/json' },
        credentials: 'include',
        body: JSON.stringify({ password }),
      });

      if (!response.ok) {
        const data = await response.json();
        throw new Error(data.error || 'Failed to set password');
      }

      showSuccess('Wachtwoord succesvol ingesteld');
      setShowPasswordModal(false);
      setSelectedUser(null);
      (e.target as HTMLFormElement).reset();
    } catch (err) {
      showError(err instanceof Error ? err.message : 'Failed to set password');
    }
  };

  const filteredUsers = users.filter(
    (user) =>
      user.email.toLowerCase().includes(searchTerm.toLowerCase()) ||
      user.username.toLowerCase().includes(searchTerm.toLowerCase()) ||
      (user.display_name && user.display_name.toLowerCase().includes(searchTerm.toLowerCase()))
  );

  const getUserInitials = (user: User) => {
    if (user.display_name) {
      return user.display_name
        .split(' ')
        .map(n => n[0])
        .join('')
        .toUpperCase()
        .slice(0, 2);
    }
    return user.username.substring(0, 2).toUpperCase();
  };

  const formatDate = (dateString: string | null) => {
    if (!dateString) return 'Nog niet ingelogd';
    return new Date(dateString).toLocaleDateString('nl-NL', {
      year: 'numeric',
      month: 'short',
      day: 'numeric',
    });
  };

  if (!hasManageUsers) {
    return (
      <ProtectedRoute requirePermission="manage_users">
        <div>Access denied</div>
      </ProtectedRoute>
    );
  }

  return (
    <div className="space-y-6">
      {/* Header */}
      <PageHeader
        title="Gebruikersbeheer"
        description="Beheer gebruikers, rollen en rechten"
        icon={
          <svg className="w-8 h-8" fill="none" viewBox="0 0 24 24" stroke="currentColor">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4.354a4 4 0 110 5.292M15 21H3v-1a6 6 0 0112 0v1zm0 0h6v-1a6 6 0 00-9-5.197M13 7a4 4 0 11-8 0 4 4 0 018 0z" />
          </svg>
        }
        actions={
          <button
            onClick={() => setShowCreateModal(true)}
            className="px-4 py-2 bg-white text-blue-600 rounded-lg hover:bg-blue-50 transition-colors font-medium text-sm shadow-sm hover:shadow-md flex items-center gap-2"
          >
            <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4v16m8-8H4" />
            </svg>
            Nieuwe gebruiker
          </button>
        }
      />

      {/* Success/Error Messages */}
      {success && (
        <div className="p-4 bg-green-50 border border-green-200 rounded-lg flex items-start gap-3 animate-in slide-in-from-top">
          <svg className="w-5 h-5 text-green-600 flex-shrink-0 mt-0.5" 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>
          <p className="text-green-800 font-medium">{success}</p>
        </div>
      )}

      {error && (
        <div className="p-4 bg-red-50 border border-red-200 rounded-lg flex items-start gap-3 animate-in slide-in-from-top">
          <svg className="w-5 h-5 text-red-600 flex-shrink-0 mt-0.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
          </svg>
          <p className="text-red-800 font-medium">{error}</p>
        </div>
      )}

      {/* Search and Stats */}
      <div className="bg-white rounded-xl shadow-sm border border-gray-200 p-6">
        <div className="flex flex-col sm:flex-row gap-4 items-start sm:items-center justify-between mb-6">
          <div className="relative flex-1 max-w-md">
            <svg className="absolute left-3 top-1/2 transform -translate-y-1/2 w-5 h-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>
            <input
              type="text"
              placeholder="Zoek op naam, e-mail of gebruikersnaam..."
              value={searchTerm}
              onChange={(e) => setSearchTerm(e.target.value)}
              className="w-full pl-10 pr-4 py-2.5 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent"
            />
          </div>
          <div className="flex items-center gap-4 text-sm text-gray-600">
            <span className="font-medium text-gray-900">{filteredUsers.length}</span>
            <span>van {users.length} gebruikers</span>
          </div>
        </div>

        {/* Users Grid */}
        {isLoading ? (
          <div className="py-12 text-center">
            <div className="inline-block w-10 h-10 border-4 border-blue-500 border-t-transparent rounded-full animate-spin"></div>
            <p className="mt-4 text-gray-600 font-medium">Gebruikers laden...</p>
          </div>
        ) : filteredUsers.length === 0 ? (
          <div className="py-12 text-center">
            <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>
            <p className="mt-4 text-gray-600 font-medium">Geen gebruikers gevonden</p>
            <p className="mt-1 text-sm text-gray-500">
              {searchTerm ? 'Probeer een andere zoekterm' : 'Maak je eerste gebruiker aan'}
            </p>
          </div>
        ) : (
          <div className="grid grid-cols-1 lg:grid-cols-2 gap-4">
            {filteredUsers.map((user) => (
              <div
                key={user.id}
                className="bg-gradient-to-br from-white to-gray-50 rounded-xl border border-gray-200 hover:border-blue-300 hover:shadow-md transition-all duration-200"
              >
                <div className="p-5">
                  {/* User Header */}
                  <div className="flex items-start justify-between mb-4">
                    <div className="flex items-center gap-3">
                      <div className="w-12 h-12 rounded-full bg-gradient-to-br from-blue-500 to-blue-600 flex items-center justify-center text-white font-semibold text-lg shadow-md">
                        {getUserInitials(user)}
                      </div>
                      <div>
                        <h3 className="font-semibold text-gray-900 text-lg">
                          {user.display_name || user.username}
                        </h3>
                        <p className="text-sm text-gray-500">@{user.username}</p>
                      </div>
                    </div>
                    <div className="relative">
                      <button
                        onClick={(e) => {
                          e.stopPropagation();
                          setActionMenuOpen(actionMenuOpen === user.id ? null : user.id);
                        }}
                        className="p-2 rounded-lg hover:bg-gray-100 transition-colors"
                      >
                        <svg className="w-5 h-5 text-gray-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 5v.01M12 12v.01M12 19v.01M12 6a1 1 0 110-2 1 1 0 010 2zm0 7a1 1 0 110-2 1 1 0 010 2zm0 7a1 1 0 110-2 1 1 0 010 2z" />
                        </svg>
                      </button>
                      {actionMenuOpen === user.id && (
                        <div className="absolute right-0 mt-2 w-56 bg-white rounded-lg shadow-lg border border-gray-200 z-10">
                          <div className="py-1">
                            {!user.email_verified && (
                              <button
                                onClick={() => handleVerifyEmail(user.id)}
                                className="w-full text-left px-4 py-2 text-sm text-yellow-700 hover:bg-yellow-50 flex items-center gap-2"
                              >
                                <svg className="w-4 h-4" 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>
                                Verifieer e-mail
                              </button>
                            )}
                            <button
                              onClick={() => {
                                setSelectedUser(user);
                                setShowPasswordModal(true);
                                setActionMenuOpen(null);
                              }}
                              className="w-full text-left px-4 py-2 text-sm text-gray-700 hover:bg-gray-50 flex items-center gap-2"
                            >
                              <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 7a2 2 0 012 2m4 0a6 6 0 01-7.743 5.743L11 17H9v2H7v2H4a1 1 0 01-1-1v-2.586a1 1 0 01.293-.707l5.964-5.964A6 6 0 1121 9z" />
                              </svg>
                              Wachtwoord instellen
                            </button>
                            <button
                              onClick={() => handleInviteUser(user.id)}
                              className="w-full text-left px-4 py-2 text-sm text-gray-700 hover:bg-gray-50 flex items-center gap-2"
                            >
                              <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 8l7.89 5.26a2 2 0 002.22 0L21 8M5 19h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z" />
                              </svg>
                              Uitnodiging verzenden
                            </button>
                            <div className="border-t border-gray-100 my-1"></div>
                            <button
                              onClick={() => handleToggleActive(user.id, user.is_active)}
                              className="w-full text-left px-4 py-2 text-sm text-gray-700 hover:bg-gray-50 flex items-center gap-2"
                            >
                              <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d={user.is_active ? "M18.364 18.364A9 9 0 005.636 5.636m12.728 12.728A9 9 0 015.636 5.636m12.728 12.728L5.636 5.636" : "M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"} />
                              </svg>
                              {user.is_active ? 'Deactiveren' : 'Activeren'}
                            </button>
                            <button
                              onClick={() => handleDeleteUser(user.id)}
                              className="w-full text-left px-4 py-2 text-sm text-red-600 hover:bg-red-50 flex items-center gap-2"
                            >
                              <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16" />
                              </svg>
                              Verwijderen
                            </button>
                          </div>
                        </div>
                      )}
                    </div>
                  </div>

                  {/* Email */}
                  <div className="mb-4">
                    <div className="flex items-center gap-2 text-sm text-gray-600">
                      <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 8l7.89 5.26a2 2 0 002.22 0L21 8M5 19h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z" />
                      </svg>
                      <span>{user.email}</span>
                    </div>
                  </div>

                  {/* Status Badges */}
                  <div className="flex flex-wrap gap-2 mb-4">
                    <span
                      className={`inline-flex items-center gap-1.5 px-2.5 py-1 rounded-full text-xs font-medium ${
                        user.is_active
                          ? 'bg-green-100 text-green-800'
                          : 'bg-red-100 text-red-800'
                      }`}
                    >
                      <div className={`w-1.5 h-1.5 rounded-full ${user.is_active ? 'bg-green-600' : 'bg-red-600'}`}></div>
                      {user.is_active ? 'Actief' : 'Inactief'}
                    </span>
                    {user.email_verified ? (
                      <span className="inline-flex items-center gap-1.5 px-2.5 py-1 rounded-full text-xs font-medium bg-blue-100 text-blue-800">
                        <svg className="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M5 13l4 4L19 7" />
                        </svg>
                        E-mail geverifieerd
                      </span>
                    ) : (
                      <span className="inline-flex items-center gap-1.5 px-2.5 py-1 rounded-full text-xs font-medium bg-yellow-100 text-yellow-800">
                        <svg className="w-3 h-3" 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 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z" />
                        </svg>
                        E-mail niet geverifieerd
                      </span>
                    )}
                  </div>

                  {/* Roles */}
                  <div className="mb-4">
                    <div className="flex items-center gap-2 mb-2">
                      <svg className="w-4 h-4 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>
                      <span className="text-xs font-medium text-gray-500 uppercase">Rollen</span>
                    </div>
                    <div className="flex flex-wrap gap-1.5">
                      {user.roles.length > 0 ? (
                        user.roles.map((role) => (
                          <span
                            key={role.id}
                            className="inline-flex items-center gap-1 px-2.5 py-1 rounded-md text-xs font-medium bg-blue-50 text-blue-700 border border-blue-200"
                          >
                            {role.name}
                            <button
                              onClick={() => handleRemoveRole(user.id, role.id)}
                              className="hover:text-blue-900 transition-colors"
                              title="Rol verwijderen"
                            >
                              <svg className="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
                              </svg>
                            </button>
                          </span>
                        ))
                      ) : (
                        <span className="text-xs text-gray-400 italic">Geen rollen toegewezen</span>
                      )}
                      <select
                        onChange={(e) => {
                          if (e.target.value) {
                            handleAssignRole(user.id, parseInt(e.target.value));
                            e.target.value = '';
                          }
                        }}
                        className="text-xs border border-gray-300 rounded-md px-2 py-1 bg-white hover:bg-gray-50 focus:outline-none focus:ring-1 focus:ring-blue-500"
                        title="Rol toevoegen"
                      >
                        <option value="">+ Rol toevoegen</option>
                        {roles
                          .filter((role) => !user.roles.some((ur) => ur.id === role.id))
                          .map((role) => (
                            <option key={role.id} value={role.id}>
                              {role.name}
                            </option>
                          ))}
                      </select>
                    </div>
                  </div>

                  {/* Additional Info */}
                  <div className="pt-4 border-t border-gray-100">
                    <div className="grid grid-cols-2 gap-3 text-xs text-gray-500">
                      <div>
                        <span className="font-medium text-gray-600">Aangemaakt:</span>
                        <p className="mt-0.5">{formatDate(user.created_at)}</p>
                      </div>
                      <div>
                        <span className="font-medium text-gray-600">Laatste login:</span>
                        <p className="mt-0.5">{formatDate(user.last_login)}</p>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            ))}
          </div>
        )}
      </div>

      {/* Create User Modal */}
      {showCreateModal && (
        <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50 p-4">
          <div className="bg-white rounded-xl shadow-xl w-full max-w-md">
            <div className="p-6 border-b border-gray-200">
              <h2 className="text-2xl font-bold text-gray-900">Nieuwe gebruiker</h2>
              <p className="text-sm text-gray-600 mt-1">Voeg een nieuwe gebruiker toe aan het systeem</p>
            </div>
            <form onSubmit={handleCreateUser} className="p-6">
              <div className="space-y-4">
                <div>
                  <label className="block text-sm font-semibold text-gray-700 mb-2">
                    E-mailadres
                  </label>
                  <input
                    type="email"
                    name="email"
                    required
                    className="w-full px-4 py-2.5 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent"
                    placeholder="gebruiker@voorbeeld.nl"
                  />
                </div>
                <div>
                  <label className="block text-sm font-semibold text-gray-700 mb-2">
                    Gebruikersnaam
                  </label>
                  <input
                    type="text"
                    name="username"
                    required
                    className="w-full px-4 py-2.5 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent"
                    placeholder="gebruikersnaam"
                  />
                </div>
                <div>
                  <label className="block text-sm font-semibold text-gray-700 mb-2">
                    Weergavenaam
                  </label>
                  <input
                    type="text"
                    name="display_name"
                    className="w-full px-4 py-2.5 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent"
                    placeholder="Voornaam Achternaam (optioneel)"
                  />
                </div>
                <div className="flex items-center p-3 bg-blue-50 rounded-lg border border-blue-200">
                  <input
                    type="checkbox"
                    name="send_invitation"
                    id="send_invitation"
                    defaultChecked
                    className="w-4 h-4 text-blue-600 border-gray-300 rounded focus:ring-blue-500"
                  />
                  <label htmlFor="send_invitation" className="ml-3 text-sm text-gray-700">
                    Stuur uitnodigingsemail naar de gebruiker
                  </label>
                </div>
              </div>
              <div className="mt-6 flex gap-3">
                <button
                  type="submit"
                  className="flex-1 px-4 py-2.5 bg-blue-600 text-white font-medium rounded-lg hover:bg-blue-700 transition-colors"
                >
                  Gebruiker aanmaken
                </button>
                <button
                  type="button"
                  onClick={() => setShowCreateModal(false)}
                  className="flex-1 px-4 py-2.5 bg-gray-200 text-gray-700 font-medium rounded-lg hover:bg-gray-300 transition-colors"
                >
                  Annuleren
                </button>
              </div>
            </form>
          </div>
        </div>
      )}

      {/* Set Password Modal */}
      {showPasswordModal && selectedUser && (
        <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50 p-4">
          <div className="bg-white rounded-xl shadow-xl w-full max-w-md">
            <div className="p-6 border-b border-gray-200">
              <h2 className="text-2xl font-bold text-gray-900">Wachtwoord instellen</h2>
              <p className="text-sm text-gray-600 mt-1">
                Stel een nieuw wachtwoord in voor <strong>{selectedUser.display_name || selectedUser.username}</strong>
              </p>
            </div>
            <form onSubmit={handleSetPassword} className="p-6">
              <div className="space-y-4">
                <div>
                  <label className="block text-sm font-semibold text-gray-700 mb-2">
                    Nieuw wachtwoord
                  </label>
                  <input
                    type="password"
                    name="password"
                    required
                    minLength={8}
                    className="w-full px-4 py-2.5 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent"
                    placeholder="Minimaal 8 tekens"
                  />
                </div>
                <div>
                  <label className="block text-sm font-semibold text-gray-700 mb-2">
                    Bevestig wachtwoord
                  </label>
                  <input
                    type="password"
                    name="confirm_password"
                    required
                    minLength={8}
                    className="w-full px-4 py-2.5 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent"
                    placeholder="Bevestig het wachtwoord"
                  />
                </div>
              </div>
              <div className="mt-6 flex gap-3">
                <button
                  type="submit"
                  className="flex-1 px-4 py-2.5 bg-blue-600 text-white font-medium rounded-lg hover:bg-blue-700 transition-colors"
                >
                  Wachtwoord instellen
                </button>
                <button
                  type="button"
                  onClick={() => {
                    setShowPasswordModal(false);
                    setSelectedUser(null);
                    setError(null);
                  }}
                  className="flex-1 px-4 py-2.5 bg-gray-200 text-gray-700 font-medium rounded-lg hover:bg-gray-300 transition-colors"
                >
                  Annuleren
                </button>
              </div>
            </form>
          </div>
        </div>
      )}
    </div>
  );
}