import { getSessionSnapshot } from './app-state'
import { getBookingStatusText, getStoredUser } from './flow'
import { getCurrentLanguage } from './i18n'

const ACTIVE_BOOKING_STATUSES = ['pending_review', 'approved_wait_assign', 'assigned_wait_room']

function isZh(language) {
  return language !== 'en'
}

function getGuardText(language = 'zh') {
  const zh = isZh(language)
  return {
    loginTitle: zh ? '提示' : 'Notice',
    loginContent: zh ? '您还未登录，请先登录或注册账号。' : 'Please sign in or register an account first.',
    loginCancelText: zh ? '取消' : 'Cancel',
    loginConfirmText: zh ? '去登录' : 'Sign In',
    existingBookingTitle: zh ? '已有进行中的预订' : 'Existing Booking',
    existingBookingContent: zh
      ? '您当前状态为“{status}”，请先查看预订详情。'
      : 'Your current booking status is "{status}". Please review the booking detail first.',
    existingBookingCancelText: zh ? '取消' : 'Cancel',
    viewBooking: zh ? '查看预订' : 'View Booking'
  }
}

function buildQueryString(query = {}) {
  return Object.keys(query).reduce((result, key) => {
    const value = query[key]
    if (value === '' || value === null || typeof value === 'undefined') {
      return result
    }
    result.push(`${encodeURIComponent(key)}=${encodeURIComponent(String(value))}`)
    return result
  }, []).join('&')
}

function getCurrentPageUrl() {
  const pages = getCurrentPages()
  if (!Array.isArray(pages) || !pages.length) {
    return ''
  }
  const currentPage = pages[pages.length - 1] || {}
  const route = currentPage.route || ''
  const options = currentPage.options || (currentPage.$page && currentPage.$page.options) || {}
  if (!route) {
    return ''
  }
  const queryString = buildQueryString(options)
  return `/${route}${queryString ? `?${queryString}` : ''}`
}

export function ensureBookingAccess(options = {}) {
  const language = options.language || getCurrentLanguage()
  const guardText = getGuardText(language)
  const session = getSessionSnapshot()
  const sessionUser = session.resolvedUser && Object.keys(session.resolvedUser).length
    ? session.resolvedUser
    : {}
  const optionUser = options.userInfo && Object.keys(options.userInfo).length
    ? options.userInfo
    : null
  const userInfo = optionUser
    ? {
        ...sessionUser,
        ...optionUser
      }
    : (Object.keys(sessionUser).length ? sessionUser : getStoredUser())

  if (!session.isLogin) {
    uni.showModal({
      title: options.loginTitle || guardText.loginTitle,
      content: options.loginContent || guardText.loginContent,
      cancelText: options.loginCancelText || guardText.loginCancelText,
      confirmText: options.loginConfirmText || guardText.loginConfirmText,
      success: (res) => {
        if (res.confirm) {
          const redirectUrl = options.loginRedirectUrl || getCurrentPageUrl()
          const query = [`bypass=1`]
          if (redirectUrl) {
            query.push(`redirect=${encodeURIComponent(redirectUrl)}`)
          }
          uni.navigateTo({ url: `/pkgAccount/login/login?${query.join('&')}` })
        }
      }
    })
    return false
  }

  if (ACTIVE_BOOKING_STATUSES.includes(userInfo.bookingStatus)) {
    const statusText = getBookingStatusText(userInfo.bookingStatus, language)
    uni.showModal({
      title: guardText.existingBookingTitle,
      content: guardText.existingBookingContent.replace('{status}', statusText),
      cancelText: guardText.existingBookingCancelText,
      confirmText: guardText.viewBooking,
      success: (res) => {
        if (res.confirm) {
          const orderNo = encodeURIComponent(
            userInfo.currentBooking && userInfo.currentBooking.orderNo
              ? userInfo.currentBooking.orderNo
              : ''
          )
          uni.navigateTo({
            url: orderNo
              ? `/pkgBooking/booking_detail/booking_detail?orderNo=${orderNo}`
              : '/pkgBooking/booking_detail/booking_detail'
          })
        }
      }
    })
    return false
  }

  return true
}