From 93ac4fa81376043d769d5b073a8b8b395ad9b8f8 Mon Sep 17 00:00:00 2001
From: lrl <742798240@qq.com>
Date: Fri, 17 Dec 2021 09:40:16 +0800
Subject: [PATCH] perf: breadcrumb

---
 src/layout/components/sidebar/breadCrumb.vue | 62 +++++++++++++++++++-
 1 file changed, 60 insertions(+), 2 deletions(-)

diff --git a/src/layout/components/sidebar/breadCrumb.vue b/src/layout/components/sidebar/breadCrumb.vue
index 08ba0bb61..cdc29b0ac 100644
--- a/src/layout/components/sidebar/breadCrumb.vue
+++ b/src/layout/components/sidebar/breadCrumb.vue
@@ -1,11 +1,16 @@
 <script setup lang="ts">
 import { ref, watch } from "vue";
-import { useRoute, useRouter, RouteLocationMatched } from "vue-router";
 import { transformI18n } from "/@/plugins/i18n";
+import { isEmpty, isEqual, findIndex } from "lodash-es";
+import { useMultiTagsStoreHook } from "/@/store/modules/multiTags";
+import { getParentPaths, findRouteByPath } from "/@/router/utils";
+import { useRoute, useRouter, RouteLocationMatched } from "vue-router";
 
 const levelList = ref([]);
 const route = useRoute();
 const router = useRouter();
+const routes = router.options.routes;
+const multiTags = useMultiTagsStoreHook().multiTags;
 
 const isDashboard = (route: RouteLocationMatched): boolean | string => {
   const name = route && (route.name as string);
@@ -15,8 +20,60 @@ const isDashboard = (route: RouteLocationMatched): boolean | string => {
   return name.trim().toLocaleLowerCase() === "welcome".toLocaleLowerCase();
 };
 
+// 获取动态路由信息
+const getDynamicRoute = (path, tags) => {
+  const dynamicRoute = findRouteByPath(path, tags);
+  if (!dynamicRoute) {
+    return null;
+  } else if (isEmpty(route.query) || isEqual(dynamicRoute.query, route.query)) {
+    /**
+     * isEmpty(route.query) 动态标签页已存在，切换标签页时不需要判断route.query
+     * isEqual(dynamicRoute.query, route.query) 新开动态标签页, 匹配与新开标签页相符的query
+     */
+    return dynamicRoute;
+  } else {
+    const index = findIndex(
+      tags,
+      v => v.path === dynamicRoute.path && isEqual(v.query, dynamicRoute.query)
+    );
+    // 去掉不符合当前路由query的路由
+    const newTags = tags.slice(index + 1);
+    return getDynamicRoute(path, newTags);
+  }
+};
+
 const getBreadcrumb = (): void => {
-  let matched = route.matched.filter(item => item.meta && item.meta.title);
+  // 当前路由信息
+  let currentRoute;
+  if (route.meta?.realPath) {
+    currentRoute = getDynamicRoute(route.path, multiTags);
+  } else {
+    currentRoute = findRouteByPath(route.path, multiTags);
+  }
+  // 当前路由的父级路径组成的数组
+  const parentRoutes = getParentPaths(route.path, routes);
+  // 存放组成面包屑的数组
+  let matched = [];
+  // 获取每个父级路径对应的路由信息
+  parentRoutes.forEach(path => {
+    if (path !== "/") {
+      matched.push(findRouteByPath(path, routes));
+    }
+  });
+  if (route.meta.refreshRedirect) {
+    matched.unshift(
+      findRouteByPath(route.meta.refreshRedirect as string, routes)
+    );
+  } else {
+    // 过滤与子级相同标题的父级路由
+    matched = matched.filter(item => {
+      return !item.redirect || (item.redirect && item.children.length !== 1);
+    });
+  }
+  if (currentRoute.path !== "/welcome") {
+    matched.push(currentRoute);
+  }
+
   const first = matched[0];
   if (!isDashboard(first)) {
     matched = [
@@ -27,6 +84,7 @@ const getBreadcrumb = (): void => {
       } as unknown as RouteLocationMatched
     ].concat(matched);
   }
+
   levelList.value = matched.filter(
     item => item.meta && item.meta.title && item.meta.breadcrumb !== false
   );