add: export in JSON

app/src/search.js

@@ -1,5 +1,4 @@
 // TODO: unit tests for business logic
-// TODO: export in JSON
 
 const cheerio = require("cheerio");
 
@@ -35,7 +34,7 @@ async function handleSearch(req, res) {
         format: "json"
     }); 
 
-    const response = await fetch(
+    const reposnse = await fetch(
         `${searxngUrl}/search?${params}`,
         {
             headers: {
@@ -43,9 +42,18 @@ async function handleSearch(req, res) {
             }
         }
     );
+    const data = await reposnse.json();
 
-    const data = await response.json();
+    const filteredresults = filterJson(data.results || []);
-    res.json(filterJson(data.results || []));
+
+    // Send the result as a downloadable JSON file
+    res.setHeader("Content-Type", "application/json; charset=utf-8");
+    res.setHeader(
+      "Content-Disposition",
+      'attachment; filename="output.json"'
+    );
+
+    return res.send(JSON.stringify(filteredresults, null, 2));
   } catch (error) {
     console.error("[SEARCH.JS] " + error);
     res.status(500).send("<p><b>Search failed!<br>See the console for the error.</b></p>");