index.js

require('dotenv').config()
const express = require('express')
const app = express()
const morgan = require('morgan')
const cors = require('cors')
const Person = require('./models/person')

app.use(cors())

app.use(express.json())

morgan.token('body', function (req, res) {
  return JSON.stringify(req.body)
})

app.use(morgan('tiny'))

app.use(
  morgan(':method :url :status :res[content-length] - :response-time ms :body')
)

app.post('/api/persons', (request, response, next) => {
  const body = request.body

  if (!body.name) {
    return response.status(400).json({
      error: 'The name is missing'
    })
  }

  if (!body.number) {
    return response.status(400).json({
      error: 'The number is missing'
    })
  }

  /*let foundPerson = persons.find(person => person.name === body.name)

  if (foundPerson) {
    return response.status(400).json({
      error: 'name must be unique'
    })
  }*/

  const person = new Person({
    name: body.name,
    number: body.number
  })

  person
    .save()
    .then(savedPerson => {
      response.json(savedPerson)
    })
    .catch(error => next(error))
})

app.get('/api/persons', (request, response) => {
  Person.find({}).then(persons => {
    response.json(persons)
  })
})

app.get('/api/persons/:id', (request, response, next) => {
  Person.findById(request.params.id)
    .then(person => {
      if (person) {
        response.json(person)
      } else {
        response.status(404).end()
      }
    })
    .catch(error => next(error))
})

app.delete('/api/persons/:id', (request, response, next) => {
  Person.findByIdAndRemove(request.params.id)
    .then(result => {
      response.status(204).end()
    })
    .catch(error => next(error))
})

app.put('/api/persons/:id', (request, response, next) => {
  const body = request.body

  const person = {
    name: body.name,
    number: body.number
  }

  Person.findByIdAndUpdate(request.params.id, person, { new: true })
    .then(updatedPerson => {
      response.json(updatedPerson)
    })
    .catch(error => next(error))
})

app.get('/info', (request, response) => {
  Person.find({}).then(persons => {
    response.send(
      `<p>Phonebook has info for ${
        persons.length
      } people</p><p>${new Date()}</p>`
    )
  })
})

app.use(express.static('build'))

const unknownEndpoint = (request, response) => {
  response.status(404).json({ error: 'unknown endpoint' })
}

app.use(unknownEndpoint)

const errorHandler = (error, request, response, next) => {
  console.error(error.message)

  if (error.name === 'CastError') {
    return response.status(400).send({ error: 'malformatted id' })
  } else if (error.name === 'ValidationError') {
    return response.status(400).json({ error: error.message })
  }

  next(error)
}

// this has to be the last loaded middleware.
app.use(errorHandler)

const PORT = process.env.PORT || 3001
app.listen(PORT, () => {
  console.log(`Server running on port ${PORT}`)
})