From 64051887ce031b36d74349496912e5c337801c15 Mon Sep 17 00:00:00 2001
From: "konstantina.galouni" <kgalouni@di.uoa.gr>
Date: Mon, 11 Oct 2021 14:02:22 +0300
Subject: [PATCH] [Trunk | Explore]: parsingFunctions.class.ts: [Bug fix] Parse
 contexts properly when a label is null/undefined or empty string (result
 landing page).

---
 .../landing-utils/parsingFunctions.class.ts   | 44 ++++++++++++-------
 1 file changed, 27 insertions(+), 17 deletions(-)

diff --git a/landingPages/landing-utils/parsingFunctions.class.ts b/landingPages/landing-utils/parsingFunctions.class.ts
index 3d844fcc..65a7a806 100644
--- a/landingPages/landing-utils/parsingFunctions.class.ts
+++ b/landingPages/landing-utils/parsingFunctions.class.ts
@@ -599,49 +599,59 @@ export class ParsingFunctions {
       "labelCategory": string, "idCategory": string,
       "labelConcept": string, "idConcept": string
     }>();
-    
+
     let position = 0;
     let labels = "";
     let context;
     let length = Array.isArray(_contexts) ? _contexts.length : 1;
     for (let i = 0; i < length; i++) {
+      let numOfCategories: number = 0;  // count categories with label
       context = Array.isArray(_contexts) ? _contexts[i] : _contexts;
       
-      if (context.hasOwnProperty("type") && (context['type'] == "community" || context['type'] == "ri")) {
+      if (context.label && context.hasOwnProperty("type") && (context['type'] == "community" || context['type'] == "ri")) {
         if (context.hasOwnProperty("category")) {
           let category;
           let length2 = Array.isArray(context['category']) ? context['category'].length : 1;
           for (let z = 0; z < length2; z++) {
+            let numOfConcepts: number = 0;  // count category concepts with label
             category = Array.isArray(context['category']) ? context['category'][z] : context['category'];
-            if (category.hasOwnProperty("concept")) {
+            if (category.label && category.hasOwnProperty("concept")) {
               let categoryConcept;
               let length1 = Array.isArray(category['concept']) ? category['concept'].length : 1;
               for (let j = 0; j < length1; j++) {
                 categoryConcept = Array.isArray(category['concept']) ? category['concept'][j] : category['concept'];
-                
-                contexts[position] = {"labelContext": "", "idContext": "",
-                                      "labelCategory": "", "idCategory": "",
-                                      "labelConcept": "", "idConcept": ""};
-                contexts[position]['labelContext'] = context.label;
-                contexts[position]['idContext'] = context.id;
-                contexts[position]['labelCategory'] = category.label;
-                contexts[position]['idCategory'] = category.id;
-                contexts[position]['labelConcept'] = categoryConcept.label;
-                contexts[position]['idConcept'] = categoryConcept.id;
 
-                position++;
+                // initalize if there is concept label or this is the last concept of the category and there were no concepts
+                // otherwise we could have multiple entries for the same category but without concepts
+                if(categoryConcept.label || (numOfConcepts == 0 && j == (length1 - 1))) {
+                  contexts[position] = {
+                    "labelContext": "", "idContext": "",
+                    "labelCategory": "", "idCategory": "",
+                    "labelConcept": "", "idConcept": ""
+                  };
+                  contexts[position]['labelContext'] = context.label;
+                  contexts[position]['idContext'] = context.id;
+                  contexts[position]['labelCategory'] = category.label;
+                  contexts[position]['idCategory'] = category.id;
+                  contexts[position]['labelConcept'] = categoryConcept.label ? categoryConcept.label : null;
+                  contexts[position]['idConcept'] = categoryConcept.label ? categoryConcept.id : null;
+
+                  position++;
+                  numOfConcepts++;
+                }
               }
-            } else {
+            } else if(category.label || (numOfCategories == 0 && z == (length2 - 1))) {
               contexts[position] = {"labelContext": "", "idContext": "",
                                     "labelCategory": "",  "idCategory": "",
                                     "labelConcept": "", "idConcept": ""};
               contexts[position]['labelContext'] = context.label;
               contexts[position]['idContext'] = context.id;
-              contexts[position]['labelCategory'] = category.label;
-              contexts[position]['idCategory'] = category.id;
+              contexts[position]['labelCategory'] = category.label ? category.label : null;
+              contexts[position]['idCategory'] = category.label ? category.id : null;
               contexts[position]['labelConcept'] = null;
               contexts[position]['idConcept'] = null;
               position++;
+              numOfCategories++;
             }
           }
         } else {