import { isLogin } from '@/utils/auth.uts'

export const LOGIN_PAGE : string = '/pages/mine/mine'

const WHITE_LIST : string[] = [
  '/pages/index/index',
  '/pages/category/category',
  '/pages/mine/mine'
]

function normalize(url : string) : string {
  let path = url
  const questionIndex = path.indexOf('?')
  if (questionIndex > -1) {
    path = path.substring(0, questionIndex)
  }
  return path
}

function inWhiteList(path : string) : boolean {
  for (let i = 0; i < WHITE_LIST.length; i++) {
    if (WHITE_LIST[i] == path) {
      return true
    }
  }
  return false
}

export function canNavigate(url : string) : boolean {
  if (inWhiteList(normalize(url))) {
    return true
  }
  return isLogin()
}

function goLogin(from : string) : void {
  uni.showToast({ title: '请先登录', icon: 'none' })
  uni.navigateTo({ url: LOGIN_PAGE + '?redirect=' + encodeURIComponent(from) })
}

export function navigateTo(url : string) : void {
  if (!canNavigate(url)) {
    goLogin(url)
    return
  }
  uni.navigateTo({ url: url })
}

export function redirectTo(url : string) : void {
  if (!canNavigate(url)) {
    uni.redirectTo({ url: LOGIN_PAGE })
    return
  }
  uni.redirectTo({ url: url })
}

export function switchTab(url : string) : void {
  if (!canNavigate(url)) {
    goLogin(url)
    return
  }
  uni.switchTab({ url: url })
}

export function reLaunch(url : string) : void {
  if (!canNavigate(url)) {
    uni.reLaunch({ url: LOGIN_PAGE })
    return
  }
  uni.reLaunch({ url: url })
}

export function navigateBack(delta ?: number) : void {
  uni.navigateBack({ delta: delta ?? 1 })
}