Implement todo API

backend/controllers/controllers.js

@@ -0,0 +1,171 @@
+const todos = require("../models/model");
+
+
+//GET request for To-do Datas
+exports.getTodos = (req, res) => {
+  try {
+    return res.status(200).json({
+      success: true,
+      data: todos,
+    });
+  } catch (error) {
+    return res.status(500).json({
+      success: false,
+      message: "Server Error : " + error.message,
+    });
+  }
+};
+
+//Create New To-do Item
+//Validating first if title is empty
+//Create Recent time and date for createAt
+//Check last item if existed create id from last item id incremeted by 1 if not not create id = 1
+exports.createTodo = (req, res) => {
+  try {
+    const { title } = req.body;
+
+    if (!title) {
+      return res.status(400).json({
+        success: false,
+        message: "Title shoud not be empty",
+      });
+    }
+
+    const now = new Date();
+
+    const newTodo = {
+      id: todos.length ? todos[todos.length - 1].id + 1 : 1,
+      title: title,
+      completed: false,
+      createdAt: now,
+    };
+
+    todos.push(newTodo);
+
+    return res.status(200).json({
+      success: true,
+      message: "To-do succesfully added",
+      created: newTodo,
+    });
+  } catch (error) {
+    return res.status(500).json({
+      success: false,
+      message: "Server Error : " + error.message,
+    });
+  }
+};
+
+
+//Search To-do Item By ID
+//Check if ID is existing return error if not, return result if it exist.
+exports.getTodoById = (req, res) => {
+  try {
+    const { id } = req.params;
+    const todo = todos.find((todo) => todo.id === parseInt(id));
+
+    if (!todo) {
+      return res.status(404).json({
+        success: false,
+        message: `To-do with ID ${id} not found!`,
+      });
+    }
+
+    return res.status(200).json({
+      success: true,
+      data: todo,
+    });
+  } catch (error) {
+    return res.status(500).json({
+      success: false,
+      message: "Server Error : " + error.message,
+    });
+  }
+};
+
+
+//Update Item Search by ID return Error if item did not exist
+// return updated Item if successful
+
+exports.updateTodo = (req, res) => {
+  try {
+    const { id } = req.params;
+    const { title, completed } = req.body;
+    const todoID = parseInt(id);
+
+    if (!id) {
+      return res.status(400).json({
+        success: false,
+        message: `ID must not be empty`,
+      });
+    }
+
+    const todo = todos.find((todo) => todo.id === todoID);
+
+    if (!todo) {
+      return res.status(404).json({
+        success: false,
+        message: `To-do with ID ${id} not found!`,
+      });
+    }
+
+    if (title) {
+      todo.title = title;
+    }
+
+    if (completed !== undefined && completed !== "") {
+      todo.completed = completed;
+    }
+
+    return res.status(200).json({
+      success: true,
+      message: "To-do item successfuly updated",
+      updated: todo,
+    });
+  } catch (error) {
+    return res.status(500).json({
+      success: false,
+      message: "Server Error : " + error.message,
+    });
+  }
+};
+
+//Delete Item Search ID if existing, if not existing return error
+//if existing get item and index (since I'm using objects list there is no utility function like in ORM's)
+//I just spliced tto remove the data and show deleted data.
+
+exports.deleteTodo = (req, res) => {
+  try {
+    const { id } = req.params;
+    const todoID = parseInt(id);
+
+    if (!id) {
+      return res.status(400).json({
+        success: false,
+        message: "ID should not be empty",
+      });
+    }
+
+    const todo = todos.find((todo) => todo.id === todoID);
+    const todoIndex = todos.find((todo) => todo.id === todoID);
+
+    if (!todo) {
+      return res.status(404).json({
+        success: false,
+        message: `To-do with ID ${id} not found!`,
+      });
+    }
+
+    const deletedItem = todos.splice(todoIndex, 1);
+
+    return res.status(200).json({
+      success: true,
+      message: "To-do item has been deleted!",
+      deleted: deletedItem,
+    });
+  } catch (error) {
+    return res.status(500).json({
+      success: false,
+      message: "Server Error : " + error.message,
+    });
+  }
+};

backend/index.js

@@ -1,11 +1,17 @@
 const express = require("express");
 const app = express();
 const PORT = process.env.PORT || 4000;
+const todoRouter = require("./routes/routes")
 
-// Basic route
-app.get("/", (req, res) => {
-  res.send("Hello from Express!");
-});
+
+//I've used this to send json but I've got error when trying to send request using forms
+app.use(express.json());
+
+//I've added search and found this as a solution for form-url encode
+app.use(express.urlencoded({ extended: true }));
+
+//I've used the router module I've made
+app.use("/todo", todoRouter);
 
 // Start server
 app.listen(PORT, () => {

backend/models/model.js

@@ -0,0 +1,5 @@
+//exported data model storage
+
+let todos = [];
+
+module.exports = todos;

backend/package.json

@@ -5,6 +5,7 @@
     "start": "node index.js"
   },
   "dependencies": {
+    "body-parser": "^2.2.0",
     "express": "^4.18.2"
   }
 }

backend/routes/routes.js

@@ -0,0 +1,14 @@
+const express = require("express");
+const { getTodos, getTodoById, createTodo, updateTodo, deleteTodo } = require("../controllers/controllers");
+
+const router = express.Router();
+
+//Create Router list js and exported Controllers functions.
+
+router.get("/", getTodos);
+router.post("/", createTodo);
+router.get("/:id", getTodoById);
+router.put("/:id", updateTodo);
+router.delete("/:id", deleteTodo);
+
+module.exports = router;