index.js

require("dotenv").config()
const express = require("express")
const morgan = require("morgan")
const cors = require("cors")
const app = express()
const Contact = require("./models/contact")
app.use(cors())
app.use(express.static("dist"))
app.use(express.json())
app.use(
  morgan(
    ":method :url :status :total-time[digits] :req[header] :response-time ms :postData"
  )
)
morgan.token("postData", function (req) {
  return JSON.stringify(req.body)
})

app.get("/", (req, res) => {
  res.send("<h1>Hello World!</h1>")
})

app.get("/info", (req, res) => {
  Contact.find({}).then((contacts) => {
    res.send(
      `<p>Phonebook has info for ${contacts.length} people</p><p>${Date()}</p>`
    )
  })
})

app.get("/api/persons", (req, res) => {
  Contact.find({}).then((contacts) => {
    res.json(contacts)
  })
})

app.get("/api/persons/:id", (req, res, next) => {
  Contact.findById(req.params.id)
    .then((contact) => {
      if (contact) {
        res.json(contact)
      } else {
        res.status(404).end()
      }
    })
    .catch((err) => next(err))
})

app.put("/api/persons/:id", (req, res, next) => {
  const person = {
    name: req.body.name,
    number: req.body.number,
  }
  Contact.findByIdAndUpdate(req.params.id, person, {
    new: true,
    runValidators: true,
    context: "query",
  })
    .then((updatedContact) => {
      res.json(updatedContact)
    })
    .catch((err) => next(err))
})

app.delete("/api/persons/:id", (req, res, next) => {
  Contact.findByIdAndRemove(req.params.id)
    .then(() => {
      res.status(204).end()
    })
    .catch((err) => next(err))
})

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

  if (!body.name) {
    return res.status(400).json({
      error: "name missing",
    })
  } else if (!body.number) {
    return res.status(400).json({
      error: "number missing",
    })
  }
  const contact = new Contact({
    name: body.name,
    number: body.number,
  })
  contact
    .save()
    .then((saved) => {
      res.json(saved)
    })
    .catch((err) => next(err))
})

const errorHandler = (err, req, res, next) => {
  console.error(err.message)

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

  next(err)
}

app.use(errorHandler)

const unknownEndpoint = (req, res) => {
  res.status(404).send({ error: "unknown endpoint" })
}

app.use(unknownEndpoint)

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