export feature configurable by parameter

Author: Konstiman

vis/js/reducers/list.js

@@ -18,6 +18,7 @@ const list = (
     hideUnselectedKeywords: true,
     height: null,
     citePapers: false,
+    exportPapers: false,
   },
   action
 ) => {
@@ -49,6 +50,7 @@ const list = (
         disableClicks: !config.render_map,
         height: action.listHeight,
         citePapers: config.cite_papers,
+        exportPapers: config.export_papers,
       };
     case "TOGGLE_LIST":
       return {

vis/js/templates/listentry/PaperButtons.jsx

@@ -62,7 +62,8 @@ const mapStateToProps = (state) => ({
   //   state.service
   // ),
   showCiteButton: state.list.citePapers,
-  showExportButton: ["base", "pubmed"].includes(state.service),
+  // showExportButton: ["base", "pubmed"].includes(state.service),
+  showExportButton: state.list.exportPapers,
 });
 
 export default connect(

vis/js/utils/usePaperExport.js

@@ -1,6 +1,7 @@
 import { useState, useEffect } from "react";
 
-export const PAPER_EXPORT_ENDPOINT = "services/exportMetadata.php?format=bibtex";
+export const PAPER_EXPORT_ENDPOINT =
+  "services/exportMetadata.php?format=bibtex";
 
 const DATA_FALLBACK = "No data available.";
 
@@ -35,7 +36,12 @@ const loadPaperExport = (paper, serverUrl, callback) => {
     body: "paper=" + encodeURIComponent(JSON.stringify(paper)),
   })
     .then((response) => response.text())
-    .then((data) => callback((prev) => ({ ...prev, [paper.safe_id]: data })))
+    .then((data) =>
+      callback((prev) => ({
+        ...prev,
+        [paper.safe_id]: data ? data : DATA_FALLBACK,
+      }))
+    )
     .catch((error) => {
       console.error(error);
       callback((prev) => ({