User language control via userlang query param

This is a draft commit enabling the testing of the support for
kiwix-serve internationalization.

src/server/internalServer.cpp

@@ -443,11 +443,11 @@ SuggestionsList_t getSuggestions(SuggestionSearcherCache& cache, const zim::Arch
 namespace
 {
 
-std::string makeFulltextSearchSuggestion(const std::string& queryString)
+std::string makeFulltextSearchSuggestion(const std::string& lang, const std::string& queryString)
 {
   MustacheData data;
   data.set("SEARCH_TERMS", queryString);
-  const std::string tmpl = getTranslatedString("en", "suggest-full-text-search");
+  const std::string tmpl = getTranslatedString(lang, "suggest-full-text-search");
   return render_template(tmpl, data);
 }
 
@@ -523,7 +523,8 @@ std::unique_ptr<Response> InternalServer::handle_suggest(const RequestContext& r
   /* Propose the fulltext search if possible */
   if (archive->hasFulltextIndex()) {
     MustacheData result;
-    result.set("label", makeFulltextSearchSuggestion(queryString));
+    const auto lang = request.get_user_language();
+    result.set("label", makeFulltextSearchSuggestion(lang, queryString));
     result.set("value", queryString + " ");
     result.set("kind", "pattern");
     result.set("first", first);

src/server/request_context.cpp

@@ -193,4 +193,9 @@ std::string RequestContext::get_query() const {
   return q;
 }
 
+std::string RequestContext::get_user_language() const
+{
+  return get_optional_param<std::string>("userlang", "en");
+}
+
 }

src/server/request_context.h

@@ -94,6 +94,8 @@ class RequestContext {
 
     bool can_compress() const { return acceptEncodingDeflate; }
 
+    std::string get_user_language() const;
+
   private: // data
     std::string full_url;
     std::string url;

static/i18n/hy.json

@@ -0,0 +1,8 @@
+{
+	"@metadata": {
+		"authors": [
+		]
+	},
+	"name":"Հայերեն",
+	"suggest-full-text-search": "որոնել '{{{SEARCH_TERMS}}}'..."
+}

static/i18n_resources_list.txt

@@ -1 +1,2 @@
 i18n/en.json
+i18n/hy.json

static/skin/taskbar.js

@@ -12,9 +12,10 @@ jq(document).ready(() => {
                ? (new URLSearchParams(window.location.search)).get('content') 
                : window.location.pathname.split(`${root}/`)[1].split('/')[0];
     
+        const userlang = (new URLSearchParams(window.location.search)).get('userlang') || "en";
         $( "#kiwixsearchbox" ).autocomplete({
     
-            source: `${root}/suggest?content=${bookName}`,
+            source: `${root}/suggest?content=${bookName}&userlang=${userlang}`,
             dataType: "json",
             cache: false,
     

test/server.cpp

@@ -1182,6 +1182,17 @@ R"EXPECTEDRESPONSE([
     //EOLWHITESPACEMARKER
   }
 ]
+)EXPECTEDRESPONSE"
+    },
+    { /* url: */ "/ROOT/suggest?content=zimfile&term=abracadabra&userlang=hy",
+R"EXPECTEDRESPONSE([
+  {
+    "value" : "abracadabra ",
+    "label" : "որոնել 'abracadabra'...",
+    "kind" : "pattern"
+    //EOLWHITESPACEMARKER
+  }
+]
 )EXPECTEDRESPONSE"
     },
   };