feat(controllers): add delete and getBySlug methods in category controller

The `category.controller.ts` has been updated to handle deleting a category and retrieving a category by slug. The `deleteCategory` function takes a category slug from the request params and first checks if the category exists before attempting to delete it. While the `getBySlugCategory` function simply retrieves a category by its slug.

Issue: #12
Signed-off-by: Mathis <yidhra@tuta.io>

src/controllers/category.controller.ts

@@ -67,6 +67,33 @@ async function updateCategory(req: Request, res:Response): Promise<Response> {
   return res.status(200).json({ message: "Category updated successfully" });
 }
 
+/**
+ * Deletes a category by its slug.
+ *
+ * @param {Request} req - The request object containing the category slug.
+ * @param {Response} res - The response object to send the result.
+ * @returns {Promise<Response>} A Promise that resolves to the response object.
+ */
+async function deleteCategory(req: Request, res: Response): Promise<Response> {
+	const categorySlug = req.params["categorySlug"];
+  if (!categorySlug) {
+    logger.error("Category slug is missing");
+    return res.status(400).json({ error: "Category slug is missing" });
+  }
+  const doesExist = await CategoryService.getBySlug(`${categorySlug}`);
+  if (!doesExist || !doesExist.id) {
+    logger.error("Category not found");
+    return res.status(404).json({ error: "Category not found" });
+  }
+  const deleteResult = await CategoryService.delete(`${doesExist.id}`);
+  if (!deleteResult) {
+    logger.error("Failed to delete category");
+    return res.status(500).json({ error: "Failed to delete category" });
+  }
+  logger.info(`Category deleted successfully! (${categorySlug})`);
+  return res.status(200).json({ message: "Category deleted successfully" });
+}
+
 /**
  * Retrieves all categories.
  *
@@ -91,10 +118,31 @@ async function getAllCategory(res: Response): Promise<Response> {
 	});
 }
 
+async function getBySlugCategory(req: Request, res:Response) {
+	const categorySlug = req.params["categorySlug"];
+    if (!categorySlug) {
+      logger.error("Category slug is missing");
+      return res.status(400).json({ error: "Category slug is missing" });
+    }
+    const category = await CategoryService.getBySlug(`${categorySlug}`);
+    if (!category || !category.id) {
+      logger.error("Category not found");
+      return res.status(404).json({ error: "Category not found" });
+    }
+    logger.info(`Category retrieved successfully! (${categorySlug})`);
+    return res.status(200).json({
+      id: category.id,
+      display_name: category.display_name,
+      slug_name: category.slug_name
+    });
+}
+
 const CategoryController = {
 	create: createCategory,
 	update: updateCategory,
+	delete: deleteCategory,
 	getAll: getAllCategory,
+	getBySlug: getBySlugCategory
 }
 
 export default CategoryController;