FEAT: add pathNamespaces option to search plugin

docs/plugins.md

@@ -44,6 +44,17 @@ By default, the hyperlink on the current page is recognized and the content is s
       // To avoid search index collision
       // between multiple websites under the same domain
       namespace: 'website-1',
+
+      // Use different indexes for path prefixes (namespaces).
+      // NOTE: Only works in 'auto' mode.
+      //
+      // When initialiazing an index, we look for the first path from the sidebar.
+      // If it matches the prefix from the list, we switch to the corresponding index.
+      pathNamespaces: ['/zh-cn', '/ru-ru', '/ru-ru/v1'],
+
+      // You can provide a regexp to match prefixes. In this case,
+      // the matching substring will be used to identify the index
+      pathNamespaces: /^(\/(zh-cn|ru-ru))?(\/(v1|v2))?/
     }
   }
 </script>

index.html

@@ -51,7 +51,8 @@
           '/de-de/': 'Suche',
           '/zh-cn/': '搜索',
           '/': 'Search'
-        }
+        },
+        pathNamespaces: ['/zh-cn', '/de-de', '/ru-ru', '/es']
       },
       plugins: [
         function (hook, vm) {

src/plugins/search/index.js

@@ -10,6 +10,7 @@ const CONFIG = {
   maxAge: 86400000, // 1 day
   hideOtherSidebarContent: false,
   namespace: undefined,
+  pathNamespaces: undefined,
 };
 
 const install = function(hook, vm) {
@@ -27,6 +28,7 @@ const install = function(hook, vm) {
     CONFIG.hideOtherSidebarContent =
       opts.hideOtherSidebarContent || CONFIG.hideOtherSidebarContent;
     CONFIG.namespace = opts.namespace || CONFIG.namespace;
+    CONFIG.pathNamespaces = opts.pathNamespaces || CONFIG.pathNamespaces;
   }
 
   const isAuto = CONFIG.paths === 'auto';

src/plugins/search/search.js

@@ -198,9 +198,29 @@ export function search(query) {
 
 export function init(config, vm) {
   const isAuto = config.paths === 'auto';
+  const paths = isAuto ? getAllPaths(vm.router) : config.paths;
+
+  let namespaceSuffix = '';
+
+  // only in auto mode
+  if (isAuto && config.pathNamespaces) {
+    const path = paths[0];
+
+    if (Array.isArray(config.pathNamespaces)) {
+      namespaceSuffix =
+        config.pathNamespaces.find(prefix => path.startsWith(prefix)) ||
+        namespaceSuffix;
+    } else if (config.pathNamespaces instanceof RegExp) {
+      const matches = path.match(config.pathNamespaces);
+
+      if (matches) {
+        namespaceSuffix = matches[0];
+      }
+    }
+  }
 
-  const expireKey = resolveExpireKey(config.namespace);
-  const indexKey = resolveIndexKey(config.namespace);
+  const expireKey = resolveExpireKey(config.namespace) + namespaceSuffix;
+  const indexKey = resolveIndexKey(config.namespace) + namespaceSuffix;
 
   const isExpired = localStorage.getItem(expireKey) < Date.now();
 
@@ -212,15 +232,9 @@ export function init(config, vm) {
     return;
   }
 
-  const paths = isAuto ? getAllPaths(vm.router) : config.paths;
   const len = paths.length;
   let count = 0;
 
-  // Fix search error when exist translations documents
-  if (INDEXS !== null && !INDEXS[paths[0]]) {
-    INDEXS = {};
-  }
-
   paths.forEach(path => {
     if (INDEXS[path]) {
       return count++;