const requestIp = require('request-ip')

module.exports = function (req, res, next) {
  // Website you wish to allow to connect
  res.setHeader('Access-Control-Allow-Origin', '*')
  // Request methods you wish to allow
  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE')
  // Request headers you wish to allow
  res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type,token,authorization')
  //
  req.clientIp = requestIp.getClientIp(req)
  //
  res.done = (pStatus, pErr, pJson) => {
    let status = null
    let error = null
    let json = null

    if (typeof pStatus === 'number') {
      status = pStatus
      error = pErr
      json = pJson || {}
    } else {
      error = pStatus
      json = pErr || {}
    }

    if (!error && status >= 400) {
      error = 'Error:401'
    }

    if (error) {
      status = status || 555
      let errorToSend = {
        error: '',
        httpStatus: status,
        stack: null,
        more: json || {}
      }
      if (!(error instanceof Error)) {
        if (typeof error === 'object') error = JSON.stringify(error)
        error = new Error(error)
      }

      errorToSend.error = error.message
      errorToSend.stack = error.stack

      res.status(status).json(errorToSend)
    } else {
      res.json(json)
    }
  }
  next()
}