Fix trade fair links to use bookmark keyword suffixes

web/trade-fairs.js

@@ -1021,53 +1021,58 @@
     return td;
   }
 
-  function buildTradeFairQueries(row) {
+  function buildTradeFairBaseQuery(row) {
     const base = String(row.messe || '').trim();
-    const city = String(row.stadt || '').trim();
-    const topic = String(row.thema || '').split(',')[0].trim();
-
-    return [...new Set([
-      base,
-      [base, city].filter(Boolean).join(' '),
-      [base, topic].filter(Boolean).join(' ')
-    ].map((entry) => entry.trim()).filter(Boolean))];
+    if (base) {
+      return base;
     }
 
-  function openQueryFallback(query) {
-    const trimmed = String(query || '').trim();
+    const fallback = [row.messe, row.stadt].map((value) => String(value || '').trim()).filter(Boolean).join(' ');
+    return fallback.trim();
+  }
+
+  function openBookmarkLikeFallback(baseQuery) {
+    const trimmed = String(baseQuery || '').trim();
     if (!trimmed) {
       return 0;
     }
 
+    const suffixes = ['Gewinnspiel', 'gewinnen', 'verlosen'];
+    let opened = 0;
+
+    suffixes.forEach((suffix) => {
+      const query = `${trimmed} ${suffix}`.trim();
       if (typeof window.buildBookmarkSearchUrl === 'function') {
-      const built = window.buildBookmarkSearchUrl(trimmed);
+        const built = window.buildBookmarkSearchUrl(query);
         if (built) {
           window.open(built, '_blank', 'noopener');
-        return 1;
+          opened += 1;
+          return;
         }
       }
 
       const url = new URL('https://www.facebook.com/search/posts');
-    url.searchParams.set('q', trimmed);
+      url.searchParams.set('q', query);
       window.open(url.toString(), '_blank', 'noopener');
-    return 1;
+      opened += 1;
+    });
+
+    return opened;
   }
 
   function openTradeFairSearch(row) {
-    const queries = buildTradeFairQueries(row);
-    if (!queries.length) {
+    const baseQuery = buildTradeFairBaseQuery(row);
+    if (!baseQuery) {
       return 0;
     }
 
     let opened = 0;
     if (typeof window.openBookmarkQueries === 'function') {
-      opened = window.openBookmarkQueries(queries);
+      opened = window.openBookmarkQueries(baseQuery);
     }
 
     if (opened === 0) {
-      queries.forEach((query) => {
-        opened += openQueryFallback(query);
-      });
+      opened = openBookmarkLikeFallback(baseQuery);
     }
 
     if (opened > 0) {