chore: optimize the i18n code of router; 🌟

src/utils/i18n.js

@@ -0,0 +1,67 @@
+import Vue from 'vue'
+import VueI18n from 'vue-i18n'
+import routesI18n from '@/router/i18n'
+import './Objects'
+
+/**
+ * 创建 i18n 配置
+ * @param router 路由
+ * @param locale 本地化语言
+ * @param fallback 回退语言
+ * @returns {VueI18n}
+ */
+function initI18n(router, locale, fallback) {
+  Vue.use(VueI18n)
+  const options = router.options.routes.find(item => item.path === '/').children
+  formatOptions(options, '')
+  const CN = generateI18n(new Object(), options, 'name')
+  const US = generateI18n(new Object(), options, 'path')
+  const i18n = new VueI18n({
+    locale,
+    fallbackLocale: fallback,
+    silentFallbackWarn: true,
+    messages: {CN, US}
+  })
+  const messages = routesI18n.messages
+  Object.keys(messages).forEach(key => {
+    i18n.mergeLocaleMessage(key, messages[key])
+  })
+  return i18n
+}
+
+/**
+ * 根据 router options 配置生成 国际化语言
+ * @param lang
+ * @param options
+ * @param valueKey
+ * @returns {*}
+ */
+function generateI18n(lang, options, valueKey) {
+  options.forEach(menu => {
+    let keys = menu.fullPath.substring(1).split('/').concat('name')
+    lang.assignProps(keys, menu[valueKey])
+    if (menu.children) {
+      generateI18n(lang, menu.children, valueKey)
+    }
+  })
+  return lang
+}
+
+/**
+ * 格式化 router options，生成 fullPath
+ * @param options
+ * @param parentPath
+ */
+function formatOptions(options, parentPath) {
+  options.forEach(route => {
+    let isFullPath = route.path.substring(0, 1) === '/'
+    route.fullPath = isFullPath ? route.path : parentPath + '/' + route.path
+    if (route.children) {
+      formatOptions(route.children, route.fullPath)
+    }
+  })
+}
+
+export {
+  initI18n
+}