const express = require('express');
const app = express();

app.use(express.json());

const courses = [
	{ id: 1, name: 'course1'},
	{ id: 2, name: 'course2'},
	{ id: 3, name: 'course3'},
];

// Corespond to HTTP
// app.get()
// app.post()
// app.put();
// app.delete()

app.get('/',(req,res)=> {
	res.send('Hello World!!!');
});

app.get('/api/courses',(req,res) => {
	res.send(courses);
});

app.get('/api/courses/:id',(req,res) => {
	const course = courses.find(c=> c.id === parseInt(req.params.id));
	if(!course) res.status(404).send('The course with the given ID was not found');
	res.send(course);
});

app.post('/api/courses',(req,res)=> {
	const course = {
		id: courses.length + 1,
		name: req.body.name
	}

	courses.push(course);
	res.send(course);
});

// PORT
const port = process.env.PORT || 3000;

app.listen(port,()=> console.log(`Listening on port ${port}...`));