const _ = require('lodash')

function getTimeUnits(u) {
  const units = {
    'd': '天',
    'h': '时',
    'm': '分',
    's': '秒'
  }
  if (getUserLang() === 'zh-CN') {
    return units[u]
  }
  return u
}

export function timeOffset(a, b) {
  const start = safeDate(a)
  const end = safeDate(b)
  const offset = (end - start) / 1000
  return readableSecond(offset)
}

function readableSecond(offset) {
  const days = offset / 3600 / 24
  const hours = offset / 3600
  const minutes = offset / 60
  const seconds = offset

  if (days > 1) {
    return days.toFixed(1) + ' ' + getTimeUnits('d')
  } else if (hours > 1) {
    return hours.toFixed(1) + ' ' + getTimeUnits('h')
  } else if (minutes > 1) {
    return minutes.toFixed(1) + ' ' + getTimeUnits('m')
  } else if (seconds > 1) {
    return seconds.toFixed(1) + ' ' + getTimeUnits('s')
  }
  return ''
}

function getUserLang() {
  const userLangEN = document.cookie.indexOf('django_language=en')
  if (userLangEN === -1) {
    return 'zh-CN'
  } else {
    return 'en-US'
  }
}

function safeDate(s) {
  s = cleanDateStr(s)
  return new Date(s)
}

function cleanDateStr(d) {
  for (let i = 0; i < 3; i++) {
    if (!isNaN(Date.parse(d))) {
      return d
    }
    if (!isNaN(Number(d))) {
      return d
    }
    switch (i) {
      case 0:
        d = d.split('/').join('-')
        break
      case 1:
        d = d.split('+')[0].trimRight()
        break
      case 2:
        d = d.replace(/-/g, '/')
    }
  }
  return d
}

export function toSafeLocalDateStr(d) {
  if (d === '') {
    return ''
  }
  const date = safeDate(d)
  // const date_s = date.toLocaleString(getUserLang(), { hourCycle: 'h23' })
  const date_s =
    date.toLocaleDateString(getUserLang(), { hourCycle: 'h23' }) +
    ' ' +
    date.toLocaleTimeString(getUserLang(), { hourCycle: 'h23' })
  return date_s
}

export function getApiPath(that) {
  let pagePath = that.$route.path
  const pagePathArray = pagePath.split('/')
  if (pagePathArray.indexOf('orgs') !== -1) {
    pagePathArray[pagePathArray.indexOf('xpack')] = 'orgs'
  } else if (pagePathArray.indexOf('gathered-user') !== -1 || pagePathArray.indexOf('change-auth-plan') !== -1) {
    pagePathArray[pagePathArray.indexOf('accounts')] = 'xpack'
  }
  pagePath = pagePathArray.join('/')
  return `/api/v1${pagePath}/`
}

export function confirm({ msg, title, perform, success, failed, type = 'warning' }) {
  this.$alert(msg, title, {
    type: type,
    confirmButtonClass: 'el-button--info',
    showCancelButton: true,
    beforeClose: async(action, instance, done) => {
      if (action !== 'confirm') return done()
      instance.confirmButtonLoading = true
      try {
        await perform()
        done()
        if (typeof success === 'string') {
          this.$message.success(success)
        }
      } finally {
        instance.confirmButtonLoading = false
      }
    }
  })
}

export function formatDate(inputTime) {
  const date = new Date(inputTime)
  const y = date.getFullYear()
  let m = date.getMonth() + 1
  m = m < 10 ? ('0' + m) : m
  let d = date.getDate()
  d = d < 10 ? ('0' + d) : d
  let h = date.getHours()
  h = h < 10 ? ('0' + h) : h
  let minute = date.getMinutes()
  let second = date.getSeconds()
  minute = minute < 10 ? ('0' + minute) : minute
  second = second < 10 ? ('0' + second) : second
  // return y + '-' + m + '-' + d + ' ' + h + ':' + minute + ':' + second
  return y + '-' + m + '-' + d + 'T' + h + ':' + minute + ':' + second
}

const uuidPattern = /[0-9a-zA-Z\-]{36}/
export function hasUUID(s) {
  return s.search(uuidPattern) !== -1
}

export function getDaysAgo(days, now) {
  if (!now) {
    now = new Date()
  }
  return new Date(now.getTime() - 3600 * 1000 * 24 * days)
}

export function getDaysFuture(days, now) {
  if (!now) {
    now = new Date()
  }
  return new Date(now.getTime() + 3600 * 1000 * 24 * days)
}

export function getDayEnd(now) {
  if (!now) {
    now = new Date()
  }
  return new Date(new Date(now.toLocaleDateString()).getTime() + 24 * 60 * 60 * 1000 - 1)
}

export function setUrlParam(url, name, value) {
  const urlArray = url.split('?')
  if (urlArray.length === 1) {
    url += '?' + name + '=' + value
  } else {
    const oriParam = urlArray[1].split('&')
    const oriParamMap = {}
    oriParam.forEach(function(value, index) {
      const v = value.split('=')
      oriParamMap[v[0]] = v[1]
    })
    oriParamMap[name] = value
    url = urlArray[0] + '?'
    const newParam = []
    for (const [key, value] of Object.entries(oriParamMap)) {
      newParam.push(key + '=' + value)
    }
    url += newParam.join('&')
  }
  return url
}

export function getDayFuture(days, now) {
  if (!now) {
    now = new Date()
  }
  return new Date(now.getTime() + 3600 * 1000 * 24 * days)
}

export function getErrorResponseMsg(error) {
  let msg = ''
  const data = error.response && error.response.data || {}
  if (data && (data.error || data.msg || data.detail)) {
    msg = data.error || data.msg || data.detail
  }
  return msg
}

export function sleep(time) {
  return new Promise((resolve) => setTimeout(resolve, time))
}

function customizer(objValue, srcValue) {
  return _.isUndefined(objValue) ? srcValue : objValue
}

export function newURL(url) {
  let obj
  if (url.indexOf('//') > -1) {
    obj = new URL(url)
  } else {
    obj = new URL(url, location.origin)
  }
  return obj
}

export function getUpdateObjURL(url, objId) {
  const urlObj = new URL(url, location.origin)
  let pathname = urlObj.pathname
  if (!pathname.endsWith('/')) {
    pathname += '/'
  }
  pathname += `${objId}/`
  urlObj.pathname = pathname
  return urlObj.href
}

export const assignIfNot = _.partialRight(_.assignInWith, customizer)

const scheme = document.location.protocol
const port = document.location.port ? ':' + document.location.port : ''
const BASE_URL = scheme + '//' + document.location.hostname + port

export { BASE_URL }