var util = require('util')

var errorMessages = {
  'LIMIT_PART_COUNT': 'Too many parts',
  'LIMIT_FILE_SIZE': 'File too large',
  'LIMIT_FILE_COUNT': 'Too many files',
  'LIMIT_FIELD_KEY': 'Field name too long',
  'LIMIT_FIELD_VALUE': 'Field value too long',
  'LIMIT_FIELD_COUNT': 'Too many fields',
  'LIMIT_UNEXPECTED_FILE': 'Unexpected field'
}

function MulterError (code, field) {
  Error.captureStackTrace(this, this.constructor)
  this.name = this.constructor.name
  this.message = errorMessages[code]
  this.code = code
  if (field) this.field = field
}

util.inherits(MulterError, Error)

module.exports = MulterError