at the end of the day, it was inevitable

frontend/app/api/sidebarCategoriesApi.js

@@ -0,0 +1,22 @@
+import {createApi} from '../common/Common'
+
+export const getCategories = createApi('GET', '/api/v1/categories')
+
+//payload = {name, parent}
+export const addCategory = createApi('POST', '/api/v1/categories', {
+  urlData: (payload, feedId) => ({feedId})
+})
+
+//payload = {name, parent}
+export const renameCategory = createApi('PUT', '/api/v1/categories/{categoryId}', {
+  urlData: (payload, categoryId) => ({categoryId})
+})
+
+export const moveCategory = createApi('POST', '/api/v1/categories/{categoryId}/move_to/{newCategoryId}', {
+  urlData: (payload, categoryId, newCategoryId) => ({categoryId, newCategoryId})
+})
+
+//payload = {name, parent}
+export const deleteCategory = createApi('DELETE', '/api/v1/categories/{categoryId}', {
+  urlData: (payload, categoryId) => ({categoryId})
+})