write add user

UI/main.py

@@ -127,3 +127,32 @@ def logout():
     return redirect(url_for('home'))
 if __name__ == '__main__':
     app.run(debug=True)
+
+@app.route('/admin/adduser', methods=['GET', 'POST'])
+def add_user():
+    if 'username' not in session or utils.GetPrivilege(session['username'], ExecCommand) < 10:
+        return redirect(url_for('login'))
+
+    form = AddUserForm()
+    if form.validate_on_submit():
+        cur_username = session['username']
+        new_username = form.username.data
+        password = form.password.data
+        name = form.name.data
+        mailAddr = form.mailAddr.data
+        privilege = form.privilege.data
+        
+        # 调用 ExecCommand 执行添加用户命令
+        add_user_response = ExecCommand(f'add_user -c {cur_username} -u {new_username} -p {password} -n {name} -m {mailAddr} -g {privilege}')
+        
+        if add_user_response.strip() == '0':
+            flash('User added successfully.', 'success')
+            return redirect(url_for('home'))
+        elif add_user_response.strip() == '-1':
+            error = 'Failed to add user.'
+        else:
+            error = 'An unknown error occurred.'
+        
+        flash(error, 'danger')
+    
+    return render_template('adduser.html', form=form)