feat: implement user management features with add, edit, and delete functionality

frontend/src/components/AddUserForm.tsx

@@ -0,0 +1,153 @@
+import { useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { useUserData } from '@/hooks/useUserData';
+import { UserFormData } from '@/types';
+
+interface AddUserFormProps {
+  onAdd: () => void;
+  onCancel: () => void;
+}
+
+const AddUserForm = ({ onAdd, onCancel }: AddUserFormProps) => {
+  const { t } = useTranslation();
+  const { createUser } = useUserData();
+  const [error, setError] = useState<string | null>(null);
+  const [isSubmitting, setIsSubmitting] = useState(false);
+
+  const [formData, setFormData] = useState<UserFormData>({
+    username: '',
+    password: '',
+    isAdmin: false,
+  });
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+
+    if (!formData.username.trim()) {
+      setError(t('users.usernameRequired'));
+      return;
+    }
+
+    if (!formData.password.trim()) {
+      setError(t('users.passwordRequired'));
+      return;
+    }
+
+    if (formData.password.length < 6) {
+      setError(t('users.passwordTooShort'));
+      return;
+    }
+
+    setIsSubmitting(true);
+
+    try {
+      const result = await createUser(formData);
+      if (result?.success) {
+        onAdd();
+      } else {
+        setError(result?.message || t('users.createError'));
+      }
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t('users.createError'));
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const { name, value, type, checked } = e.target;
+    setFormData(prev => ({
+      ...prev,
+      [name]: type === 'checkbox' ? checked : value
+    }));
+  };
+
+  return (
+    <div className="fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full flex items-center justify-center z-50">
+      <div className="bg-white p-8 rounded-lg shadow-xl max-w-md w-full mx-4">
+        <form onSubmit={handleSubmit}>
+          <h2 className="text-xl font-semibold text-gray-800 mb-4">{t('users.addNew')}</h2>
+
+          {error && (
+            <div className="bg-red-100 border-l-4 border-red-500 text-red-700 p-3 mb-4">
+              <p className="text-sm">{error}</p>
+            </div>
+          )}
+
+          <div className="space-y-4">
+            <div>
+              <label htmlFor="username" className="block text-sm font-medium text-gray-700 mb-1">
+                {t('users.username')} *
+              </label>
+              <input
+                type="text"
+                id="username"
+                name="username"
+                value={formData.username}
+                onChange={handleInputChange}
+                placeholder={t('users.usernamePlaceholder')}
+                className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+                required
+                disabled={isSubmitting}
+              />
+            </div>
+
+            <div>
+              <label htmlFor="password" className="block text-sm font-medium text-gray-700 mb-1">
+                {t('users.password')} *
+              </label>
+              <input
+                type="password"
+                id="password"
+                name="password"
+                value={formData.password}
+                onChange={handleInputChange}
+                placeholder={t('users.passwordPlaceholder')}
+                className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+                required
+                disabled={isSubmitting}
+                minLength={6}
+              />
+            </div>
+
+            <div className="flex items-center">
+              <input
+                type="checkbox"
+                id="isAdmin"
+                name="isAdmin"
+                checked={formData.isAdmin}
+                onChange={handleInputChange}
+                className="h-4 w-4 text-blue-600 focus:ring-blue-500 border-gray-300 rounded"
+                disabled={isSubmitting}
+              />
+              <label htmlFor="isAdmin" className="ml-2 block text-sm text-gray-700">
+                {t('users.adminRole')}
+              </label>
+            </div>
+          </div>
+
+          <div className="flex justify-end space-x-3 mt-6">
+            <button
+              type="button"
+              onClick={onCancel}
+              className="px-4 py-2 text-gray-700 bg-gray-200 rounded hover:bg-gray-300 transition-colors duration-200"
+              disabled={isSubmitting}
+            >
+              {t('common.cancel')}
+            </button>
+            <button
+              type="submit"
+              className="px-4 py-2 bg-blue-600 text-white rounded hover:bg-blue-700 transition-colors duration-200 disabled:opacity-50 disabled:cursor-not-allowed"
+              disabled={isSubmitting}
+            >
+              {isSubmitting ? t('common.creating') : t('users.create')}
+            </button>
+          </div>
+        </form>
+      </div>
+    </div>
+  );
+};
+
+export default AddUserForm;

frontend/src/components/EditUserForm.tsx

@@ -0,0 +1,161 @@
+import { useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { useUserData } from '@/hooks/useUserData';
+import { User, UserUpdateData } from '@/types';
+
+interface EditUserFormProps {
+  user: User;
+  onEdit: () => void;
+  onCancel: () => void;
+}
+
+const EditUserForm = ({ user, onEdit, onCancel }: EditUserFormProps) => {
+  const { t } = useTranslation();
+  const { updateUser } = useUserData();
+  const [error, setError] = useState<string | null>(null);
+  const [isSubmitting, setIsSubmitting] = useState(false);
+
+  const [formData, setFormData] = useState({
+    isAdmin: user.isAdmin,
+    newPassword: '',
+    confirmPassword: '',
+  });
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+
+    // Validate passwords match if changing password
+    if (formData.newPassword && formData.newPassword !== formData.confirmPassword) {
+      setError(t('users.passwordMismatch'));
+      return;
+    }
+
+    if (formData.newPassword && formData.newPassword.length < 6) {
+      setError(t('users.passwordTooShort'));
+      return;
+    }
+
+    setIsSubmitting(true);
+
+    try {
+      const updateData: UserUpdateData = {
+        isAdmin: formData.isAdmin,
+      };
+
+      if (formData.newPassword) {
+        updateData.newPassword = formData.newPassword;
+      }
+
+      const result = await updateUser(user.username, updateData);
+      if (result?.success) {
+        onEdit();
+      } else {
+        setError(result?.message || t('users.updateError'));
+      }
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t('users.updateError'));
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const { name, value, type, checked } = e.target;
+    setFormData(prev => ({
+      ...prev,
+      [name]: type === 'checkbox' ? checked : value
+    }));
+  };
+
+  return (
+    <div className="fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full flex items-center justify-center z-50">
+      <div className="bg-white p-8 rounded-lg shadow-xl max-w-md w-full mx-4">
+        <form onSubmit={handleSubmit}>
+          <h2 className="text-xl font-semibold text-gray-800 mb-4">
+            {t('users.edit')} - {user.username}
+          </h2>
+
+          {error && (
+            <div className="bg-red-100 border-l-4 border-red-500 text-red-700 p-3 mb-4">
+              <p className="text-sm">{error}</p>
+            </div>
+          )}
+
+          <div className="space-y-4">
+            <div className="flex items-center">
+              <input
+                type="checkbox"
+                id="isAdmin"
+                name="isAdmin"
+                checked={formData.isAdmin}
+                onChange={handleInputChange}
+                className="h-4 w-4 text-blue-600 focus:ring-blue-500 border-gray-300 rounded"
+                disabled={isSubmitting}
+              />
+              <label htmlFor="isAdmin" className="ml-2 block text-sm text-gray-700">
+                {t('users.adminRole')}
+              </label>
+            </div>
+
+            <div>
+              <label htmlFor="newPassword" className="block text-sm font-medium text-gray-700 mb-1">
+                {t('users.newPassword')}
+              </label>
+              <input
+                type="password"
+                id="newPassword"
+                name="newPassword"
+                value={formData.newPassword}
+                onChange={handleInputChange}
+                placeholder={t('users.newPasswordPlaceholder')}
+                className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+                disabled={isSubmitting}
+                minLength={6}
+              />
+            </div>
+
+            {formData.newPassword && (
+              <div>
+                <label htmlFor="confirmPassword" className="block text-sm font-medium text-gray-700 mb-1">
+                  {t('users.confirmPassword')}
+                </label>
+                <input
+                  type="password"
+                  id="confirmPassword"
+                  name="confirmPassword"
+                  value={formData.confirmPassword}
+                  onChange={handleInputChange}
+                  placeholder={t('users.confirmPasswordPlaceholder')}
+                  className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+                  disabled={isSubmitting}
+                  minLength={6}
+                />
+              </div>
+            )}
+          </div>
+
+          <div className="flex justify-end space-x-3 mt-6">
+            <button
+              type="button"
+              onClick={onCancel}
+              className="px-4 py-2 text-gray-700 bg-gray-200 rounded hover:bg-gray-300 transition-colors duration-200"
+              disabled={isSubmitting}
+            >
+              {t('common.cancel')}
+            </button>
+            <button
+              type="submit"
+              className="px-4 py-2 bg-blue-600 text-white rounded hover:bg-blue-700 transition-colors duration-200 disabled:opacity-50 disabled:cursor-not-allowed"
+              disabled={isSubmitting}
+            >
+              {isSubmitting ? t('common.updating') : t('users.update')}
+            </button>
+          </div>
+        </form>
+      </div>
+    </div>
+  );
+};
+
+export default EditUserForm;

frontend/src/components/UserCard.tsx

@@ -0,0 +1,96 @@
+import React, { useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { User, IUser } from '@/types';
+import { Edit, Trash } from '@/components/icons/LucideIcons';
+import DeleteDialog from '@/components/ui/DeleteDialog';
+
+interface UserCardProps {
+  user: User;
+  currentUser: IUser | null;
+  onEdit: (user: User) => void;
+  onDelete: (username: string) => void;
+}
+
+const UserCard: React.FC<UserCardProps> = ({ user, currentUser, onEdit, onDelete }) => {
+  const { t } = useTranslation();
+  const [showDeleteDialog, setShowDeleteDialog] = useState(false);
+
+  const handleDeleteClick = () => {
+    setShowDeleteDialog(true);
+  };
+
+  const handleConfirmDelete = () => {
+    onDelete(user.username);
+    setShowDeleteDialog(false);
+  };
+
+  const isCurrentUser = currentUser?.username === user.username;
+  const canDelete = !isCurrentUser; // Can't delete own account
+
+  return (
+    <div className="bg-white shadow rounded-lg p-6">
+      <div className="flex justify-between items-start">
+        <div className="flex-1">
+          <div className="flex items-center space-x-3 mb-2">
+            <div className="w-10 h-10 bg-blue-500 rounded-full flex items-center justify-center">
+              <span className="text-white font-medium text-sm">
+                {user.username.charAt(0).toUpperCase()}
+              </span>
+            </div>
+            <div>
+              <h3 className="text-lg font-semibold text-gray-900">
+                {user.username}
+                {isCurrentUser && (
+                  <span className="ml-2 px-2 py-1 text-xs bg-blue-100 text-blue-800 rounded">
+                    {t('users.currentUser')}
+                  </span>
+                )}
+              </h3>
+              <div className="flex items-center space-x-2">
+                <span
+                  className={`px-2 py-1 text-xs font-medium rounded ${user.isAdmin
+                    ? 'bg-red-100 text-red-800'
+                    : 'bg-gray-100 text-gray-800'
+                    }`}
+                >
+                  {user.isAdmin ? t('users.admin') : t('users.user')}
+                </span>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <div className="flex space-x-2">
+          <button
+            onClick={() => onEdit(user)}
+            className="text-gray-500 hover:text-gray-700"
+            title={t('users.edit')}
+          >
+            <Edit size={18} />
+          </button>
+
+          {canDelete && (
+            <button
+              onClick={handleDeleteClick}
+              className="text-gray-500 hover:text-red-600"
+              title={t('users.delete')}
+            >
+              <Trash size={18} />
+            </button>
+          )}
+        </div>
+      </div>
+
+      <DeleteDialog
+        isOpen={showDeleteDialog}
+        onClose={() => setShowDeleteDialog(false)}
+        onConfirm={handleConfirmDelete}
+        serverName={user.username}
+        isGroup={false}
+        isUser={true}
+      />
+    </div>
+  );
+};
+
+export default UserCard;

frontend/src/hooks/useUserData.ts

@@ -0,0 +1,100 @@
+import { useState, useEffect, useCallback } from 'react';
+import { useTranslation } from 'react-i18next';
+import { User, ApiResponse, UserFormData, UserUpdateData } from '@/types';
+import { apiDelete, apiGet, apiPost, apiPut } from '../utils/fetchInterceptor';
+
+export const useUserData = () => {
+  const { t } = useTranslation();
+  const [users, setUsers] = useState<User[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [refreshKey, setRefreshKey] = useState(0);
+
+  const fetchUsers = useCallback(async () => {
+    try {
+      setLoading(true);
+      const data: ApiResponse<User[]> = await apiGet('/users');
+      if (!data.success) {
+        setError(data.message || t('users.fetchError'));
+        return;
+      }
+
+      if (data && data.success && Array.isArray(data.data)) {
+        setUsers(data.data);
+      } else {
+        console.error('Invalid user data format:', data);
+        setUsers([]);
+      }
+
+      setError(null);
+    } catch (err) {
+      console.error('Error fetching users:', err);
+      setError(err instanceof Error ? err.message : 'Failed to fetch users');
+      setUsers([]);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  // Trigger a refresh of the users data
+  const triggerRefresh = useCallback(() => {
+    setRefreshKey((prev) => prev + 1);
+  }, []);
+
+  // Create a new user
+  const createUser = async (userData: UserFormData) => {
+    try {
+      const result: ApiResponse<User> = await apiPost('/users', userData);
+      triggerRefresh();
+      return result;
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to create user');
+      return null;
+    }
+  };
+
+  // Update an existing user
+  const updateUser = async (username: string, data: UserUpdateData) => {
+    try {
+      const result: ApiResponse<User> = await apiPut(`/users/${username}`, data);
+      triggerRefresh();
+      return result || null;
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to update user');
+      return null;
+    }
+  };
+
+  // Delete a user
+  const deleteUser = async (username: string) => {
+    try {
+      const result = await apiDelete(`/users/${username}`);
+      if (!result?.success) {
+        setError(result?.message || t('users.deleteError'));
+        return result;
+      }
+
+      triggerRefresh();
+      return result;
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to delete user');
+      return false;
+    }
+  };
+
+  // Fetch users when the component mounts or refreshKey changes
+  useEffect(() => {
+    fetchUsers();
+  }, [fetchUsers, refreshKey]);
+
+  return {
+    users,
+    loading,
+    error,
+    setError,
+    triggerRefresh,
+    createUser,
+    updateUser,
+    deleteUser,
+  };
+};

frontend/src/pages/UsersPage.tsx

@@ -1,8 +1,125 @@
-import React from 'react';
+import React, { useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { User } from '@/types';
+import { useUserData } from '@/hooks/useUserData';
+import { useAuth } from '@/contexts/AuthContext';
+import AddUserForm from '@/components/AddUserForm';
+import EditUserForm from '@/components/EditUserForm';
+import UserCard from '@/components/UserCard';
 
 const UsersPage: React.FC = () => {
+  const { t } = useTranslation();
+  const { auth } = useAuth();
+  const currentUser = auth.user;
+  const {
+    users,
+    loading: usersLoading,
+    error: userError,
+    setError: setUserError,
+    deleteUser,
+    triggerRefresh
+  } = useUserData();
+
+  const [editingUser, setEditingUser] = useState<User | null>(null);
+  const [showAddForm, setShowAddForm] = useState(false);
+
+  // Check if current user is admin
+  if (!currentUser?.isAdmin) {
+    return (
+      <div className="bg-white shadow rounded-lg p-6">
+        <p className="text-red-600">{t('users.adminRequired')}</p>
+      </div>
+    );
+  }
+
+  const handleEditClick = (user: User) => {
+    setEditingUser(user);
+  };
+
+  const handleEditComplete = () => {
+    setEditingUser(null);
+    triggerRefresh(); // Refresh the users list after editing
+  };
+
+  const handleDeleteUser = async (username: string) => {
+    const result = await deleteUser(username);
+    if (!result?.success) {
+      setUserError(result?.message || t('users.deleteError'));
+    }
+  };
+
+  const handleAddUser = () => {
+    setShowAddForm(true);
+  };
+
+  const handleAddComplete = () => {
+    setShowAddForm(false);
+    triggerRefresh(); // Refresh the users list after adding
+  };
+
   return (
-    <div></div>
+    <div>
+      <div className="flex justify-between items-center mb-8">
+        <h1 className="text-2xl font-bold text-gray-900">{t('pages.users.title')}</h1>
+        <div className="flex space-x-4">
+          <button
+            onClick={handleAddUser}
+            className="px-4 py-2 bg-blue-100 text-blue-800 rounded hover:bg-blue-200 flex items-center btn-primary transition-all duration-200"
+          >
+            <svg xmlns="http://www.w3.org/2000/svg" className="h-4 w-4 mr-2" viewBox="0 0 20 20" fill="currentColor">
+              <path fillRule="evenodd" d="M10 3a1 1 0 00-1 1v5H4a1 1 0 100 2h5v5a1 1 0 102 0v-5h5a1 1 0 100-2h-5V4a1 1 0 00-1-1z" clipRule="evenodd" />
+            </svg>
+            {t('users.add')}
+          </button>
+        </div>
+      </div>
+
+      {userError && (
+        <div className="bg-red-100 border-l-4 border-red-500 text-red-700 p-4 mb-6 error-box rounded-lg">
+          <p>{userError}</p>
+        </div>
+      )}
+
+      {usersLoading ? (
+        <div className="bg-white shadow rounded-lg p-6 loading-container">
+          <div className="flex flex-col items-center justify-center">
+            <svg className="animate-spin h-10 w-10 text-blue-500 mb-4" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
+              <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
+              <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+            </svg>
+            <p className="text-gray-600">{t('app.loading')}</p>
+          </div>
+        </div>
+      ) : users.length === 0 ? (
+        <div className="bg-white shadow rounded-lg p-6 empty-state">
+          <p className="text-gray-600">{t('users.noUsers')}</p>
+        </div>
+      ) : (
+        <div className="space-y-6">
+          {users.map((user) => (
+            <UserCard
+              key={user.username}
+              user={user}
+              currentUser={currentUser}
+              onEdit={handleEditClick}
+              onDelete={handleDeleteUser}
+            />
+          ))}
+        </div>
+      )}
+
+      {showAddForm && (
+        <AddUserForm onAdd={handleAddComplete} onCancel={handleAddComplete} />
+      )}
+
+      {editingUser && (
+        <EditUserForm
+          user={editingUser}
+          onEdit={handleEditComplete}
+          onCancel={() => setEditingUser(null)}
+        />
+      )}
+    </div>
   );
 };