// src\utils\cipher.ts
import { encrypt, decrypt } from 'crypto-js/aes'
import { parse } from 'crypto-js/enc-utf8'
import pkcs7 from 'crypto-js/pad-pkcs7'
import ECB from 'crypto-js/mode-ecb'
import UTF8 from 'crypto-js/enc-utf8'
// 注意 key 和 iv 至少都需要 16 位
const AES_KEY = '1111111111000000'
const AES_IV = '0000001111111111'
export class AesEncryption {
  private key
  private iv
  constructor(key = AES_KEY, iv = AES_IV) {
    this.key = parse(key)
    this.iv = parse(iv)
  }
  get getOptions() {
    return {
      mode: ECB,
      padding: pkcs7,
      iv: this.iv,
    }
  }
  encryptByAES(text: string) {
    return encrypt(text, this.key, this.getOptions).toString()
  }
  decryptByAES(text: string) {
    return decrypt(text, this.key, this.getOptions).toString(UTF8)
  }
}

import qs from 'qs'
createRouter({
  // 其他配置...
  parseQuery: qs.parse,
  stringifyQuery: qs.stringify,
})

// src/router/helper/query.js
import { isArray, isNull, isUndefined } from 'lodash-es'
import { AesEncryption } from '@/utils/cipher'
import type {
  LocationQuery,
  LocationQueryRaw,
  LocationQueryValue,
} from 'vue-router'
const aes = new AesEncryption()
/**
 *
 * @description 解密:反序列化字符串參數(shù)
 */
export function stringifyQuery(obj: LocationQueryRaw): string {
  if (!obj) return ''
  const result = Object.keys(obj)
    .map((key) => {
      const value = obj[key]
      if (isUndefined(value)) return ''
      if (isNull(value)) return key
      if (isArray(value)) {
        const resArray: string[] = []
        value.forEach((item) => {
          if (isUndefined(item)) return
          if (isNull(item)) {
            resArray.push(key)
          } else {
            resArray.push(key + '=' + item)
          }
        })
        return resArray.join('&')
      }
      return `${key}=${value}`
    })
    .filter((x) => x.length > 0)
    .join('&')
  return result ? `?${aes.encryptByAES(result)}` : ''
}
/**
 *
 * @description 解密:反序列化字符串參數(shù)
 */
export function parseQuery(query: string): LocationQuery {
  const res: LocationQuery = {}
  query = query.trim().replace(/^(\?|#|&)/, '')
  if (!query) return res
  query = aes.decryptByAES(query)
  query.split('&').forEach((param) => {
    const parts = param.replace(/\+/g, ' ').split('=')
    const key = parts.shift()
    const val = parts.length > 0 ? parts.join('=') : null
    if (!isUndefined(key)) {
      if (isUndefined(res[key])) {
        res[key] = val
      } else if (isArray(res[key])) {
        ;(res[key] as LocationQueryValue[]).push(val)
      } else {
        res[key] = [res[key] as LocationQueryValue, val]
      }
    }
  })
  return res
}
// src/router/index.js
// 創(chuàng)建路由使用加解密方法
import { parseQuery, stringifyQuery } from './helper/query'
export const router = createRouter({
  // 創(chuàng)建一個(gè) hash 歷史記錄。
  history: createWebHashHistory(import.meta.env.VITE_PUBLIC_PATH),
  routes: basicRoutes,
  scrollBehavior: () => ({ left: 0, top: 0 }),
  stringifyQuery, // 序列化query參數(shù)
  parseQuery, // 反序列化query參數(shù)
})

export function createRouter(options: RouterOptions): Router {
  // 創(chuàng)建路由匹配器 matcher
  const matcher = createRouterMatcher(options.routes, options)
  // ! 使用到的 stringifyQuery 和 parseQuery
  const parseQuery = options.parseQuery || originalParseQuery
  const stringifyQuery = options.stringifyQuery || originalStringifyQuery
  // ! 路由守衛(wèi)定義
  const beforeGuards = useCallbacks<NavigationGuardWithThis<undefined>>()
  const beforeResolveGuards = useCallbacks<NavigationGuardWithThis<undefined>>()
  const afterGuards = useCallbacks<NavigationHookAfter>()
  // 聲明當(dāng)前路由
  const currentRoute = shallowRef<RouteLocationNormalizedLoaded>(
    START_LOCATION_NORMALIZED
  )
  let pendingLocation: RouteLocation = START_LOCATION_NORMALIZED
  // leave the scrollRestoration if no scrollBehavior is provided
  if (isBrowser && options.scrollBehavior && 'scrollRestoration' in history) {
    history.scrollRestoration = 'manual'
  }
  // url 參數(shù)進(jìn)行編碼處理
  const normalizeParams = applyToParams.bind(
    null,
    (paramValue) => '' + paramValue
  )
  const encodeParams = applyToParams.bind(null, encodeParam)
  const decodeParams: (params: RouteParams | undefined) => RouteParams =
        applyToParams.bind(null, decode) 
  }

// vue-router 默認(rèn)的序列化 query 參數(shù)的函數(shù)
export function stringifyQuery(query: LocationQueryRaw): string {
  let search = ''
  for (let key in query) {
    const value = query[key]
    key = encodeQueryKey(key)
    // 處理參數(shù)為 null 的情況
    if (value == null) {
      if (value !== undefined) {
        search += (search.length ? '&' : '') + key
      }
      continue
    }
    // 將參數(shù)處理為數(shù)組，便于后續(xù)統(tǒng)一遍歷處理
    const values: LocationQueryValueRaw[] = isArray(value)
    ? value.map(v => v && encodeQueryValue(v))
    : [value && encodeQueryValue(value)]
    values.forEach(value => {
      // 跳過(guò)參數(shù)為 undefined 的情況，只拼接有值的參數(shù)
      if (value !== undefined) {
        search += (search.length ? '&' : '') + key
        if (value != null) search += '=' + value
      }
    })
  }
  return search
}
// 示例參數(shù)，如下參數(shù)會(huì)被轉(zhuǎn)換為：name=wujieli&age=12&address
// query: {
//   id: undefined,
//   name: 'wujieli',
//   age: 12,
//   address: null,
// },

// vue-router 默認(rèn)的序列化 query 參數(shù)的函數(shù)
export function parseQuery(search: string): LocationQuery {
  const query: LocationQuery = {}
  // 因?yàn)橐獙?duì)字符串進(jìn)行 split('&') 操作，所以?xún)?yōu)先排除空字符串
  if (search === '' || search === '?') return query
  // 排除解析參數(shù)前的 ?
  const hasLeadingIM = search[0] === '?'
  const searchParams = (hasLeadingIM ? search.slice(1) : search).split('&')
  for (let i = 0; i < searchParams.length; ++i) {
    // 根據(jù) = 截取參數(shù)的 key 和 value，并做 decode 處理
    const searchParam = searchParams[i].replace(PLUS_RE, ' ')
    const eqPos = searchParam.indexOf('=')
    const key = decode(eqPos < 0 ? searchParam : searchParam.slice(0, eqPos))
    const value = eqPos < 0 ? null : decode(searchParam.slice(eqPos + 1))
    // 處理 key 重復(fù)存在的情況
    if (key in query) {
      // an extra variable for ts types
      let currentValue = query[key]
      if (!isArray(currentValue)) {
        currentValue = query[key] = [currentValue]
      }
      // we force the modification
      ;(currentValue as LocationQueryValue[]).push(value)
    } else {
      query[key] = value
    }
  }
  return query
}

// stringifyQuery 方法的使用
function resolve(
rawLocation: Readonly<RouteLocationRaw>,
 currentLocation?: RouteLocationNormalizedLoaded
): RouteLocation & { href: string } {
  // ...
  // 鏈接的完整 path，包括路由 path 和后面的完整參數(shù)
  const fullPath = stringifyURL(
    stringifyQuery,
    assign({}, rawLocation, {
      hash: encodeHash(hash),
      path: matchedRoute.path,
    })
  )
}
// parseQuery 方法會(huì)封裝在 locationAsObject 方法中使用
function locationAsObject(
to: RouteLocationRaw | RouteLocationNormalized
): Exclude<RouteLocationRaw, string> | RouteLocationNormalized {
  return typeof to === 'string'
    ? parseURL(parseQuery, to, currentRoute.value.path)
  : assign({}, to)
}