import { getDomain } from './getDomain'

let generalDomain: string

export function setCustomCookie(name: string, value: string, days = 5) {
  let expires = ''
  if (days) {
    const date = new Date()
    date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000)
    expires = '; expires=' + date.toUTCString()
  }
  if (typeof window === 'undefined') {
    return
  }

  const { hostname } = window.location

  if (generalDomain && generalDomain.endsWith(getDomain(hostname))) {
    document.cookie = name + '=' + (value || '') + expires + `; path=/;domain=${generalDomain}`
    return
  }

  let previousDomain = undefined
  let domain = undefined
  do {
    previousDomain = domain
    domain = getDomain(hostname, undefined, previousDomain)
    document.cookie = name + '=' + (value || '') + expires + `; path=/;domain=${domain}`
  } while (getCookieByName(name) === '' && hostname !== domain)
  generalDomain = domain
}

export function getCookieByName(cname: string) {
  if (typeof window === 'undefined') return ''
  const name = cname + '='
  const 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 ''
}

export function deleteCookieByName(name: string) {
  if (getCookieByName(name) === '') {
    return
  }

  if (typeof window === 'undefined') {
    return
  }

  const { hostname } = window.location

  if (generalDomain && generalDomain.endsWith(getDomain(hostname))) {
    document.cookie = name + `=; Path=/;domain=${generalDomain}; Expires=Thu, 01 Jan 1970 00:00:01 GMT;`
    return
  }

  let previousDomain = undefined
  let domain = undefined
  do {
    previousDomain = domain
    domain = getDomain(hostname, undefined, previousDomain)
    document.cookie = name + `=; Path=/;domain=${domain}; Expires=Thu, 01 Jan 1970 00:00:01 GMT;`
  } while (getCookieByName(name) !== '' && hostname !== domain)
  generalDomain = domain
}