Add tag controllers

controllers/tag.controller.js

@@ -0,0 +1,102 @@
+const Tag = require("../models/Tag"); // Assuming the Tag model is in the models directory
+const ApiResponse = require("../utils/ApiResponse"); // Assuming ApiResponse is a utility function for handling responses
+
+// Create a new tag
+const createTag = async (req, res) => {
+  try {
+    const { name } = req.body;
+
+    // Check if the tag already exists
+    const existingTag = await Tag.findOne({ name });
+    if (existingTag) {
+      return ApiResponse.conflict(res, "Tag already exists", 409);
+    }
+
+    const tag = new Tag({ name });
+    await tag.save();
+
+    ApiResponse.success(res, "Tag created successfully", tag);
+  } catch (error) {
+    ApiResponse.error(res, "Error while creating tag", error, 500);
+  }
+};
+
+// Get all tags
+const getTags = async (req, res) => {
+  try {
+    const tags = await Tag.find();
+    ApiResponse.success(res, "Tags fetched successfully", tags);
+  } catch (error) {
+    ApiResponse.error(res, "Error while fetching tags", error, 500);
+  }
+};
+
+// Get a single tag by ID
+const getTagById = async (req, res) => {
+  try {
+    const { id } = req.params;
+
+    const tag = await Tag.findById(id);
+    if (!tag) {
+      return ApiResponse.notFound(res, "Tag not found", 404);
+    }
+
+    ApiResponse.success(res, "Tag fetched successfully", tag);
+  } catch (error) {
+    ApiResponse.error(res, "Error while fetching tag", error, 500);
+  }
+};
+
+// Update a tag by ID
+const updateTag = async (req, res) => {
+  try {
+    const { id } = req.params;
+    const { name } = req.body;
+
+    // Check if the tag exists
+    const tag = await Tag.findById(id);
+    if (!tag) {
+      return ApiResponse.notFound(res, "Tag not found", 404);
+    }
+
+    // Check if the new name is already in use
+    const existingTag = await Tag.findOne({ name });
+    if (existingTag && existingTag._id.toString() !== id) {
+      return ApiResponse.conflict(res, "Tag name already exists", 409);
+    }
+
+    // Update the tag
+    tag.name = name || tag.name;
+    await tag.save();
+
+    ApiResponse.success(res, "Tag updated successfully", tag);
+  } catch (error) {
+    ApiResponse.error(res, "Error while updating tag", error, 500);
+  }
+};
+
+// Delete a tag by ID
+const deleteTag = async (req, res) => {
+  try {
+    const { id } = req.params;
+
+    const tag = await Tag.findById(id);
+    if (!tag) {
+      return ApiResponse.notFound(res, "Tag not found", 404);
+    }
+
+    await tag.deleteOne();
+
+    ApiResponse.success(res, "Tag deleted successfully", {});
+  } catch (error) {
+    ApiResponse.error(res, "Error while deleting tag", error, 500);
+  }
+};
+
+module.exports = {
+  createTag,
+  getTags,
+  getTagById,
+  updateTag,
+  deleteTag,
+};