import { constantRoutes } from "@/router";
import { getUserRouters } from "@/api/menu";
import Layout from "@/layout/index";
import ParentView from "@/components/ParentView";
import { titleCase } from "@/utils/index.js";
import { auth_code } from "../../utils/auth";

const permission = {
  state: {
    routes: [],
    addRoutes: [],
    defaultRoutes: [],
    topbarRouters: [],
    sidebarRouters: [],
  },
  mutations: {
    SET_ROUTES: (state, routes) => {
      state.addRoutes = routes;
      state.routes = constantRoutes.concat(routes);
    },
    SET_DEFAULT_ROUTES: (state, routes) => {
      state.defaultRoutes = constantRoutes.concat(routes);
    },
    SET_TOPBAR_ROUTES: (state, routes) => {
      // 顶部导航菜单默认添加统计报表栏指向首页
      // const index = [{
      //   path: 'index',
      //   meta: { title: '统计报表', icon: 'dashboard' }
      // }]
      // state.topbarRouters = routes.concat(index);
    },
    SET_SIDEBAR_ROUTERS: (state, routes) => {
      state.sidebarRouters = routes;
    },
  },
  actions: {
    // 生成路由
    async GenerateRoutes({ commit }) {
      return new Promise((resolve) => {
        // 向后端请求路由数据
        getUserRouters().then((res) => {
          const authCode = findNodeTypeTwo(res.data);
          localStorage.setItem(auth_code, JSON.stringify(authCode));

          const sdata = JSON.parse(JSON.stringify(routeItemInfo(res.data)));
          const rdata = JSON.parse(JSON.stringify(routeItemInfo(res.data)));
          const sidebarRoutes = filterAsyncRouter(sdata);
          const rewriteRoutes = filterAsyncRouter(rdata, false, true);
          rewriteRoutes.push({
            path: "*",
            redirect: "/reportingData",
            hidden: true,
          });
          commit("SET_ROUTES", rewriteRoutes);
          commit("SET_SIDEBAR_ROUTERS", sidebarRoutes);
          commit("SET_DEFAULT_ROUTES", sidebarRoutes);
          commit("SET_TOPBAR_ROUTES", sidebarRoutes);
          resolve(rewriteRoutes);
        });
      });
    },
    changeRoutes({ commit }, routes) {
      commit("SET_ROUTES", routes);
      commit("SET_SIDEBAR_ROUTERS", routes);
      commit("SET_DEFAULT_ROUTES", routes);
      commit("SET_TOPBAR_ROUTES", routes);
    },
  },
};

function findNodeTypeTwo(data) {
  const permissions = [];

  const traverse = (nodes) => {
    nodes.forEach((node) => {
      if (node.nodeType === "2" && node.permission) {
        permissions.push(node.permission);
      }
      if (node.children && node.children.length > 0) {
        traverse(node.children);
      }
    });
  };

  traverse(data);
  return permissions;
}

// 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) => {
    // // 屏蔽包含 summary 的路由,master分支不屏蔽
    // if (route.path.includes('summary')) {
    //   return false;
    // }
    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 {
        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) {
  console.log(childrenMap);

  var children = [];
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === "ParentView") {
        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;
}

//针对出口数据结构特殊处理
//对ext框架route数据结构进行初始化
function setRoute(route, childrens) {
  let rootRoute = {};
  let arr = [];
  childrens.forEach((item) => {
    route.forEach((val) => {
      val.id == 999999 ? (rootRoute = val) : "";
      if (item.parentId == val.id) {
        item.component = `${
          titleCase(val.name, "low") != ""
            ? "/" + titleCase(val.name, "low")
            : ""
        }${item.component}`;
        val.children.push(item);
        val.component = "Layout";
        // val.meta = item.meta
        val.alwaysShow = false;

        if (val.path == "/newui_entryIO_parent") {
          val.hidden = true;
          item.name = "ol" + item.name;
        }
      }
    });
  });
  return route;
}

function routeItemInfo(data) {
  const routes = [
    {
      path: "/redirect",
      component: Layout,
      hidden: true,
      children: [
        {
          path: "/redirect/:path(.*)",
          component: (resolve) => require(["@/views/redirect"], resolve),
        },
      ],
    },
    {
      path: "/404",
      component: (resolve) => require(["@/views/error/404"], resolve),
      hidden: true,
    },
    {
      path: "/401",
      component: (resolve) => require(["@/views/error/401"], resolve),
      hidden: true,
    },
    {
      path: "/login",
      component: (resolve) => require(["@/views/login"], resolve),
      hidden: true,
      meta: { noCache: true },
    },
    {
      path: "/relogin",
      component: (resolve) => require(["@/views/redjrectLogin"], resolve),
      hidden: true,
      meta: { noCache: true, breadcrumb: false },
    },
  ];

  data.forEach((item) => {
    const isParent = item.parentId == 0 && item.children.length == 0;
    const route = {
      path: item.path,
      component: "Layout",
      alwaysShow: true,
      hidden: false,
      meta: { title: item.name, icon: item.icon },
      children: !isParent
        ? item.children.map((child) => ({
            path: child.path,
            component: `${child.path}`,
            hidden: false,
            name: child.name,
            meta: { title: child.name, icon: child.icon || "" },
          }))
        : [
            {
              path: item.path,
              component: `${item.path}`,
              hidden: false,
              name: item.name,
              meta: { title: item.name, icon: item.icon || "" },
            },
          ],
    };
    routes.push(route);
  });

  console.log(routes);
  return routes;
}

export const loadView = (view) => {
  // 路由懒加载
  return (resolve) => require([`@/views${view}/index.vue`], resolve);
};

export default permission;