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

morgan.token('body', (req) => {
  return JSON.stringify(req.body)
})
app.use(morgan(function (tokens, req, res) {
  let returnData = [
    tokens.method(req, res),
    tokens.url(req, res),
    tokens.status(req, res),
    tokens.res(req, res, 'content-length'), '-',
    tokens['response-time'](req, res), 'ms'
  ].join(' ')
  if (req.method === 'POST') {
    return `${returnData} ${tokens.body(req)}`
  } else {
    return returnData
  }
}))

app.get('/info', (req, res, next) => {
  Person.count({}).then(count => {
    res.send(`<p>Phonebook has info for ${count} people</p><p>${Date()}</p>`)
  })
    .catch(error => next(error))
})

app.get('/api/persons', (req, res, next) => {
  Person.find({}).then(persons => {
    res.json(persons)
  })
    .catch(error => next(error))
})

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

app.delete('/api/persons/:id', (req, res, next) => {
  Person.findByIdAndDelete(req.params.id)
    .then(() => {
      res.status(204).end()
    })
    .catch(error => next(error))
})

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

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

  Person.findByIdAndUpdate(req.params.id, person, {
    new: true
  })
    .then(updatedPerson => {
      if (updatedPerson) {
        res.json(updatedPerson)
      } else {
        res.status(404).end()
      }
    })
    .catch(error => next(error))
})

// const generateId = () => {
//     return Math.floor(Math.random() * Date.now())
// }

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

  if (!body.name || !body.number) {
    return res.status(400).json({
      error: 'name or number missing'
    })
  }

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

  person.save().then(() => {
    console.log(`added ${body.name} number ${body.number} to phonebook`)
    res.json(person.toJSON())
  })
    .catch(error => next(error))
})

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

app.use(unknownEndpoint)

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

app.use(errorHandler)

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