feat: search engine config for search bar without javascript

src/components/Search.astro

@@ -1,13 +1,26 @@
 ---
 import {siteConfig} from "../config";
 const noscript = siteConfig.noClientJavaScript
+const searchEngine = siteConfig.searchEngine || 'google'
+const domain = Astro.url.host
 ---
 {noscript ?
-<form class="search-container" action="https://www.google.com/search" method="GET" target="_blank">
+<form class="search-container" action={searchEngine === "duckduckgo" ? "https://duckduckgo.com/" :
+    searchEngine === "bing" ? "https://www.bing.com/search" :
+        "https://www.google.com/search"} method="GET" target="_blank">
   <div>
     <label for="search-input"><span class="command">search</span></label>
     <input name="q" type="text" id="search-input" class="search-input"  autocomplete="off" placeholder="Type to search..." />
-    <input type="hidden" name="as_sitesearch" value={Astro.url.host} />
+    {searchEngine === "duckduckgo" &&
+        <input type="hidden" name="sites" value={domain} />
+    }
+    {searchEngine === "google" &&
+        <input type="hidden" name="as_sitesearch" value={domain} />
+    }
+    {/* broken until M1cr0$0ft get support for it */}
+    {searchEngine === "bing" &&
+        <input type="hidden" name="site" value={domain} />
+    }
   </div>
   <input type="submit" style="display: none" />
 </form>

src/config.ts

@@ -7,9 +7,10 @@ export const siteConfig = {
     noClientJavaScript: false, // disable client-side javascript, this will:
     // 1. disable all built-in client-side javascript from rendering
     // 2. the full text search will be redirected to a search engine
-    // 3. the comments will be replaced with email reply
+    // 3. the comments will be globally disabled
     // 4. the night mode & back to top will not use Javascript to function
     // 5. the neko will be force-disabled
+    authorDefaultEmail: '',
     // site components
     navBarItems: [
         // additional items in the navbar
@@ -18,6 +19,9 @@ export const siteConfig = {
         { text: "RSS", link: "/rss.xml" },
         { text: "GitHub", link: "https://github.com/GrassBlock1/mercury" },
     ],
+    // search
+    // This only works when noClientJavaScript is enabled
+    searchEngine: 'bing', // 'google', 'duckduckgo', 'bing'(broken until M1cr0$0ft get support for it), defaults to 'google'
     // footer
     // yes you can write html safely here
     customFooter: '<i>I have no mouth, and I must SCREAM</i>',