app.js

require('./tracing')
const fs = require('fs')
const express = require('express')
const cors = require('cors')
const { v4: uuidv4 } = require('uuid');
const morgan = require('morgan')

const app = express()
const port = process.env.PORT || 5000

app.use(express.json())
app.use(cors())
app.use(morgan('tiny'))

app.get('/404', (req, res) => {
    res.status(404).sendFile(__dirname + '/404.html')
})

app.use(express.static(__dirname + '/vue/dist'))

app.get('/api/books', (req, res) => {
    if (fs.existsSync('downtime.json')) {
        res.status(500).send()
    } else {
        const rawData = fs.readFileSync('books.json')
        const books = JSON.parse(rawData)
        res.status(200).json(books)
    }
})

app.get('/api/books/:id', (req, res) => {
    const rawData = fs.readFileSync('books.json')
    const books = JSON.parse(rawData)
    var arrayFound = books.filter(function(item) {
        return item.id == req.params.id;
    });
    res.status(200).json(arrayFound[0])
})

app.get('/api/users/login', (req, res) => {
    res.status(200).json({
        message: 'Login successful',
        token: uuidv4(),
        name: 'Danube'
    })
})


app.post('/api/toggle', (req, res) => {
    if (fs.existsSync('downtime.json')) {
        fs.unlinkSync('downtime.json')
        res.status(200).send()
    } else {
        fs.writeFileSync('downtime.json', '{}')
        res.status(200).send()
    }
})

app.get(/.*/, (req,res) => {
    res.sendFile(__dirname + '/vue/dist/index.html')
})

app.listen(port, () => console.log(`Example app listening on port ${port}!`))