Implement server

.vscode/launch.json

@@ -0,0 +1,13 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Launch Program",
+      "skipFiles": ["<node_internals>/**"],
+      "program": "${file}"
+    }
+  ]
+}

README.md

@@ -1,2 +1,39 @@
 # todo-express-api
 Todo api with express module
+
+### Short description
+- NB: skip the database and use an array to save the todos
+- Todo is an object with id: number, title: string, completed: boolean
+- Data type validation
+
+### Endpoints implemented
+
+- [X] GET  /todos ---> List all todos
+- [X] GET  /todos/1 ----> List only single todo 1 in this case is just example of id but it should work with any id stored
+- [X] POST /todos ---> create new todo
+- [X] PATCH /todos/1  ---> update existing todo using the id
+- [X] DELETE /todos/1  ---> removes existing todo using the id
+
+### Files
+- utilities
+  - todosController.js - all requests - GET, POST, DELETE, PATCH requests
+  - fileController.js - readTodosFile, writeTodosFile
+- middleware
+  - errorHandler.js - handleFileReadError, handleFileWriteError
+- modules
+  - todo.js - class Todo 
+- routes
+  - todosRoutes.js - routes for all GET, POST, DELETE, PATCH requests
+- data
+  - todos.json - file where all todos are stored  and available upon request
+
+## Project setup
+1. Clone repo
+2. Run ```npm install``` to install dependencies
+3. Run ```nodemon run``` or ```nodemon index.js```to start server
+4. Open in browser ```localhost:3000``` or ```127.0.0.1:3000```
+5. Check urls and response results in dev tools:
+  - ```localhost:3000/todos``` - shows all todos
+  - ```localhost:3000/todos/?id=``` + add number 1-12 to show one existing item in a todo list 
+  - use Thunder Client or Postman to check POST/PATCH/DELETE requests
+

data/todos.json

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+[
+  {
+    "id": 1,
+    "title": "Updated",
+    "completed": false
+  },
+  {
+    "id": 2,
+    "title": "Title 2",
+    "completed": false
+  },
+  {
+    "id": 3,
+    "title": "Title 3",
+    "completed": false
+  },
+  {
+    "id": 4,
+    "title": "Title 4",
+    "completed": false
+  },
+  {
+    "id": 5,
+    "title": "Title 5",
+    "completed": false
+  },
+  {
+    "id": 6,
+    "title": "Title 6",
+    "completed": false
+  },
+  {
+    "id": 7,
+    "title": "Title 7",
+    "completed": false
+  },
+  {
+    "id": 8,
+    "title": "Title 8",
+    "completed": false
+  },
+  {
+    "id": 9,
+    "title": "Title 9",
+    "completed": false
+  },
+  {
+    "id": 10,
+    "title": "Updated again",
+    "completed": false
+  },
+  {
+    "id": 11,
+    "title": "Title 11",
+    "completed": false
+  },
+  {
+    "id": 12,
+    "title": "Title 12",
+    "completed": false
+  }
+]

index.js

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+'use strict';
+
+const express = require('express');
+const app = express();
+const PORT = 3000;
+const todosRoutes = require('./routes/todosRoutes');
+
+// Middleware
+app.use(express.json());
+
+// Define routes
+app.use(todosRoutes);
+
+app.listen(PORT, () => {
+  console.log(`Listening port on ${PORT}`);
+});

middleware/errorHandler.js

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+'use strict';
+
+const handleFileReadError = (err, res) => {
+  res.status(500).json({ error: 'Failed to read todos file.' });
+};
+
+const handleFileWriteError = (err, res) => {
+  res.status(500).json({ error: 'Failed to write todos file.' });
+};
+
+module.exports = {
+  handleFileReadError,
+  handleFileWriteError,
+};

models/todo.js

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+class Todo {
+  constructor(id, title, completed) {
+    this.id = id;
+    this.title = title;
+    this.completed = completed;
+  }
+}
+
+module.exports = Todo;