import router from './router'
import type { RouteRecordRaw } from 'vue-router'
import { isRelogin } from '@/config/axios/service'
import { getAccessToken } from '@/utils/auth'
import { useTitle } from '@/hooks/web/useTitle'
import { useNProgress } from '@/hooks/web/useNProgress'
import { usePageLoading } from '@/hooks/web/usePageLoading'
import { useDictStoreWithOut } from '@/store/modules/dict'
import { useUserStoreWithOut } from '@/store/modules/user'
import { usePermissionStoreWithOut } from '@/store/modules/permission'
import { useAppStoreWithOut } from '@/store/modules/app'
import { CACHE_KEY, useCache } from '@/hooks/web/useCache'

const { wsCache } = useCache()

const { start, done } = useNProgress()

const { loadStart, loadDone } = usePageLoading()

const parseURL = (
  url: string | null | undefined
): { basePath: string; paramsObject: { [key: string]: string } } => {
  // 如果输入为 null 或 undefined，返回空字符串和空对象
  if (url == null) {
    return { basePath: '', paramsObject: {} }
  }

  // 找到问号 (?) 的位置，它之前是基础路径，之后是查询参数
  const questionMarkIndex = url.indexOf('?')
  let basePath = url
  const paramsObject: { [key: string]: string } = {}

  // 如果找到了问号，说明有查询参数
  if (questionMarkIndex !== -1) {
    // 获取 basePath
    basePath = url.substring(0, questionMarkIndex)

    // 从 URL 中获取查询字符串部分
    const queryString = url.substring(questionMarkIndex + 1)

    // 使用 URLSearchParams 遍历参数
    const searchParams = new URLSearchParams(queryString)
    searchParams.forEach((value, key) => {
      // 封装进 paramsObject 对象
      paramsObject[key] = value
    })
  }

  // 返回 basePath 和 paramsObject
  return { basePath, paramsObject }
}

// 路由不重定向白名单
const whiteList = [
  '/login',
  '/social-login',
  '/auth-redirect',
  '/bind',
  '/register',
  '/oauthLogin/gitee'
]

// 路由加载前
router.beforeEach(async (to, from, next) => {
  start()
  loadStart()
  if (getAccessToken()) {
    if (to.path === '/login') {
      next({ path: '/dashboard' }) // 已登录时访问登录页，重定向到首页
    } else {
      // 获取所有字典
      const dictStore = useDictStoreWithOut()
      const userStore = useUserStoreWithOut()
      const permissionStore = usePermissionStoreWithOut()
      const appStore = useAppStoreWithOut()
      
      // 根据路由自动切换布局 - 只有当前路径是dashboard时才使用dashboard布局
      if (to.path === '/dashboard' || to.path === '/') {
        appStore.setLayout('dashboard')
        appStore.setFixedHeader(true) // 设置header固定
      } else {
        // 获取当前保存的布局设置，如果不是dashboard就恢复到之前的设置
        const currentLayout = appStore.getLayout
        if (currentLayout === 'dashboard') {
          // 恢复到默认布局或从缓存中获取之前的布局
          const cachedLayout = wsCache.get(CACHE_KEY.LAYOUT) || 'classic'
          appStore.setLayout(cachedLayout === 'dashboard' ? 'classic' : cachedLayout)
          appStore.setFixedHeader(true) // 保持header固定
        }
      }
      
      if (!dictStore.getIsSetDict) {
        await dictStore.setDictMap()
      }
      if (!userStore.getIsSetUser) {
        isRelogin.show = true
        await userStore.setUserInfoAction()
        isRelogin.show = false
        // 后端过滤菜单
        await permissionStore.generateRoutes()
        permissionStore.getAddRouters.forEach((route) => {
          router.addRoute(route as unknown as RouteRecordRaw) // 动态添加可访问路由表
        })
        const redirectPath = from.query.redirect || to.path
        // 修复跳转时不带参数的问题
        const redirect = decodeURIComponent(redirectPath as string)
        const { paramsObject: query } = parseURL(redirect)
        
        // 如果重定向路径是根路径或不存在的路径，改为首页
        const finalRedirect = (redirect === '/' || redirect === '/index') ? '/dashboard' : redirect
        console.log('Permission guard - first time setting user, redirecting to:', finalRedirect) // 调试日志
        const nextData = to.path === finalRedirect ? { ...to, replace: true } : { path: finalRedirect, query }
        next(nextData)
      } else {
        // 即使用户信息已设置，也要检查是否需要重定向到首页
        if (to.path === '/' || (to.path === '/login' && from.query.redirect)) {
          // 从登录页跳转过来，或者访问根路径，重定向到首页
          console.log('Permission guard - redirecting to dashboard from:', to.path) // 调试日志
          next({ path: '/dashboard', replace: true })
        } else {
          console.log('Permission guard - allowing navigation to:', to.path) // 调试日志
          next()
        }
      }
    }
  } else {
    if (whiteList.indexOf(to.path) !== -1) {
      next()
    } else {
      next(`/login?redirect=${to.fullPath}`) // 否则全部重定向到登录页
    }
  }
})

router.afterEach((to) => {
  useTitle(to?.meta?.title as string)
  done() // 结束Progress
  loadDone()
  
  // 路由切换后的布局处理
  const appStore = useAppStoreWithOut()
  if (to.path === '/dashboard' || to.path === '/') {
    appStore.setLayout('dashboard')
    appStore.setFixedHeader(true) // 设置header固定
  } else {
    const currentLayout = appStore.getLayout
    if (currentLayout === 'dashboard') {
      // 恢复到默认布局
      appStore.setLayout('classic')
      appStore.setFixedHeader(true) // 保持header固定
    }
  }
})