/**
 * check Object
 * @param {string} key key name
 * @param {string} type type name
 * @param {boolean} empty can empty
 */
const chkObject = function (key = '', type = '', empty = false) {
  const uuidChk = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i
  if (!(key in this.body)) return false

  switch (type) {
    case 'string':
      if (typeof this.body[key] !== 'string' || (!empty && !this.body[key])) return false
      break
    case 'number':
      if (!isFinite(this.body[key])) return false
      break
    case 'boolean':
      if (typeof this.body[key] !== 'boolean') return false
      break
    case 'array':
      if (!Array.isArray(this.body[key]) || (!empty && this.body[key].length === 0)) return false
      break
    case 'uuid':
      if (typeof this.body[key] !== 'string') return false
      if (!empty && this.body[key] === '') return false
      if (!empty && !uuidChk.test(this.body[key])) return false
      break
    case 'object':
      if (typeof this.body[key] !== 'object') return false
      try {
        let str = JSON.stringify(this.body[key])
        JSON.parse(str)
      } catch (err) {
        return false
      }
      break
    default:
      return false
  }

  return true
}

module.exports = {
  chkObject
}