ADD: get one category logic

components/category/categoryService.js

@@ -9,3 +9,13 @@ module.exports.createCategory = async (data) => {
     const category = Category.create(data, null)
     return category
 }
+
+module.exports.getCategory = async (categoryId) => {
+    const category = await Category.findById(categoryId)
+
+    if (!category) {
+        throw new AppError('NoCategoryFound', 404, {})
+    }
+
+    return category
+}