import { AES, enc } from 'crypto-js'
import { LOGIN_KEY, SECRET_KEY, STORE_KEY } from './enum'

export class Helpers {
  static setCookie = (cname, cvalue, exdays) => {
    const d = new Date()
    d.setTime(d.getTime() + exdays * 24 * 60 * 60 * 1000)
    let expires = `expires=${d.toUTCString()}`
    document.cookie = `${cname}=${cvalue};${expires};path=/`
  }

  static getCookie = (cname) => {
    let name = cname + '='
    let ca = document.cookie.split(';')
    for (let i = 0; i < ca.length; i++) {
      let c = ca[i]
      while (c.charAt(0) == ' ') {
        c = c.substring(1)
      }
      if (c.indexOf(name) == 0) {
        return c.substring(name.length, c.length)
      }
    }
    return ''
  }

  static deleteCookie = (cname) => {
    document.cookie = `${cname}=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;`
  }

  static clearStorage = () => {
    localStorage.removeItem(LOGIN_KEY)
    localStorage.removeItem(STORE_KEY)
  }

  static checkTokenExpired = (exp) => {
    const currentTime = Math.floor(new Date().getTime() / 1000)
    return exp < currentTime
  }

  static encrypt = (obj) => {
    return AES.encrypt(JSON.stringify(obj), SECRET_KEY).toString()
  }

  static decrypt = (hash, defaultValue = {}) => {
    return hash
      ? JSON.parse(AES.decrypt(hash, SECRET_KEY).toString(enc.Utf8))
      : defaultValue
  }

  static clearObject = (object) => {
    for (var propName in object) {
      if (
        object[propName] === null ||
        object[propName] === undefined ||
        object[propName] === ''
      ) {
        delete object[propName]
      }
    }
    return object
  }

  static clearArrayWithNullObject = (array) => {
    if (array instanceof Array) {
      array.forEach((element, i) => {
        if (element instanceof Object) {
          const obk = this.clearObject(element)
          if (obk) array.splice(i, 1)
        }
      })
    }

    return array.length > 0 ? array : null
  }
}