app.js

const express = require('express');
const app = express();
const bodyParser = require('body-parser');

app.use(bodyParser.json());

let tasks = [];

// Get all tasks
app.get('/tasks', (req, res) => {
  res.json(tasks);
});

// Get a single task
app.get('/tasks/:id', (req, res) => {
  const task = tasks.find(t => t.id === parseInt(req.params.id));
  if (!task) {
    return res.status(404).json({ error: 'Task not found' });
  }
  res.json(task);
});

// Create a new task
app.post('/tasks', (req, res) => {
  const { title, description, status, dueDate } = req.body;
  const newTask = { id: tasks.length + 1, title, description, status, dueDate };
  tasks.push(newTask);
  res.status(201).json(newTask);
});

// Update a task
app.put('/tasks/:id', (req, res) => {
  const taskIndex = tasks.findIndex(t => t.id === parseInt(req.params.id));
  if (taskIndex === -1) {
    return res.status(404).json({ error: 'Task not found' });
  }
  const { title, description, status, dueDate } = req.body;
  const updatedTask = { id: tasks[taskIndex].id, title, description, status, dueDate };
  tasks[taskIndex] = updatedTask;
  res.json(updatedTask);
});

// Delete a task
app.delete('/tasks/:id', (req, res) => {
  const taskIndex = tasks.findIndex(t => t.id === parseInt(req.params.id));
  if (taskIndex === -1) {
    return res.status(404).json({ error: 'Task not found' });
  }
  tasks.splice(taskIndex, 1);
  res.sendStatus(204);
});

const port = process.env.PORT || 3000;
app.listen(port, () => {
  console.log(`Server is running on port ${port}`);
});