import auth from '@/plugins/auth'
import router, { constantRoutes, dynamicRoutes } from '@/router'
import { getRouters } from '@/api/menu'
import Layout from '@/layout/index'
import ParentView from '@/components/ParentView'
import InnerLink from '@/layout/components/InnerLink'

// 匹配views里面所有的.vue文件
const modules = import.meta.glob('./../../views/**/*.vue')

const usePermissionStore = defineStore(
  'permission',
  {
    state: () => ({
      routes: [],
      addRoutes: [],
      defaultRoutes: [],
      topbarRouters: [],
      sidebarRouters: [],
      currentTab: 'car', // 默认选中tab
      allMenus: [] // 保存完整菜单
    }),
    actions: {
      setRoutes(routes) {
        this.addRoutes = routes
        this.routes = constantRoutes.concat(routes)
      },
      setDefaultRoutes(routes) {
        this.defaultRoutes = constantRoutes.concat(routes)
      },
      setTopbarRoutes(routes) {
        this.topbarRouters = routes
      },
      setSidebarRouters(routes) {
        this.sidebarRouters = routes
      },
      setCurrentTab(tab) {
        this.currentTab = tab;
        this.updateSidebarByTab(tab);
      },
      setAllMenus(menus) {
        this.allMenus = menus;
      },
      updateSidebarByTab(tab) {
        if (!this.allMenus || this.allMenus.length === 0) {
          return;
        }
        
        // 菜单映射配置 - 这里定义每个Tab下要显示的菜单
        const tabMenuMap = {
          'car': ['车辆监控', '车辆管理'],
          'system': ['角色管理', '人员管理', '操作日志']
        };
        
        // 如果是平台概览，不显示菜单
        if (tab === 'platform') {
          this.setSidebarRouters([]);
          return;
        }
        
        // 获取当前Tab对应的菜单名称列表
        const allowedMenuNames = tabMenuMap[tab] || [];
        
        // 深拷贝菜单，避免修改原始数据
        const allMenusCopy = JSON.parse(JSON.stringify(this.allMenus));
        
        // 过滤菜单
        const filteredMenus = allMenusCopy.filter(route => {
          // 只保留这些名称的菜单
          if (route.meta && route.meta.title) {
            return allowedMenuNames.includes(route.meta.title);
          }
          return false;
        });
        
        // 设置过滤后的菜单
        this.setSidebarRouters(filteredMenus);
      },
      generateRoutes(roles) {
        return new Promise(resolve => {
          // 向后端请求路由数据
          getRouters().then(res => {
            const sdata = JSON.parse(JSON.stringify(res.data))
            const rdata = JSON.parse(JSON.stringify(res.data))
            const defaultData = JSON.parse(JSON.stringify(res.data))
            const sidebarRoutes = filterAsyncRouter(sdata)
            const rewriteRoutes = filterAsyncRouter(rdata, false, true)
            const defaultRoutes = filterAsyncRouter(defaultData)
            const asyncRoutes = filterDynamicRoutes(dynamicRoutes)
            asyncRoutes.forEach(route => { router.addRoute(route) })
            this.setRoutes(rewriteRoutes)
            
            // 保存所有菜单数据
            this.setAllMenus(sidebarRoutes)
            
            // 初始根据当前Tab设置侧边栏
            this.updateSidebarByTab(this.currentTab)
            
            this.setDefaultRoutes(sidebarRoutes)
            this.setTopbarRoutes(defaultRoutes)
            resolve(rewriteRoutes)
          })
        })
      }
    }
  })

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter(route => {
    if (type && route.children) {
      route.children = filterChildren(route.children)
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === 'Layout') {
        route.component = Layout
      } else if (route.component === 'ParentView') {
        route.component = ParentView
      } else if (route.component === 'InnerLink') {
        route.component = InnerLink
      } else {
        route.component = loadView(route.component)
      }
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type)
    } else {
      delete route['children']
      delete route['redirect']
    }
    return true
  })
}

function filterChildren(childrenMap, lastRouter = false) {
  var children = []
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach(c => {
          c.path = el.path + '/' + c.path
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c))
            return
          }
          children.push(c)
        })
        return
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path
    }
    children = children.concat(el)
  })
  return children
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
  const res = []
  routes.forEach(route => {
    if (route.permissions) {
      if (auth.hasPermiOr(route.permissions)) {
        res.push(route)
      }
    } else if (route.roles) {
      if (auth.hasRoleOr(route.roles)) {
        res.push(route)
      }
    }
  })
  return res
}

export const loadView = (view) => {
  let res;
  for (const path in modules) {
    const dir = path.split('views/')[1].split('.vue')[0];
    if (dir === view) {
      res = () => modules[path]();
    }
  }
  return res;
}

export default usePermissionStore
