Lightning indexing indicators

refs  #2647

frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.html

@@ -18,5 +18,8 @@
     <div class="text-center loading-spinner" [class]="style" *ngIf="isLoading && !disableSpinner">
       <div class="spinner-border text-light"></div>
     </div>
+    <div *ngIf="showIndexingInProgress" class="indexing-message">
+      <span class="badge badge-pill badge-warning" i18n="lightning.indexing-in-progress">Indexing in progress</span>
+    </div>
   </ng-container>
 </div>

frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.scss

@@ -133,3 +133,10 @@
     top: 450px;
   }
 }
+
+.indexing-message {
+  position: absolute;
+  width: 100%;
+  text-align: center;
+  margin-top: 100px;
+}

frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.ts

@@ -36,6 +36,7 @@ export class NodesChannelsMap implements OnInit {
   channelCurve = 0;
   nodeSize = 4;
   isLoading = false;
+  showIndexingInProgress = false;
 
   chartInstance = undefined;
   chartOptions: EChartsOption = {};
@@ -206,6 +207,8 @@ export class NodesChannelsMap implements OnInit {
     let title: object;
     if (channels.length === 0 && !this.placeholder) {
       this.chartOptions = null;
+      this.showIndexingInProgress = true;
+      this.isLoading = false;
       return;
     }
 

frontend/src/app/lightning/nodes-per-isp-chart/nodes-per-isp-chart.component.html

@@ -38,7 +38,7 @@
     </small>
   </div>
 
-  <div [class]="!widget ? 'bottom-padding' : 'pb-0'" class="container pb-lg-0">
+  <div *ngIf="!indexingInProgress else indexing" [class]="!widget ? 'bottom-padding' : 'pb-0'" class="container pb-lg-0">
     <div [class]="widget ? 'chart-widget' : 'chart'" echarts [initOpts]="chartInitOptions" [options]="chartOptions"
       (chartInit)="onChartInit($event)">
     </div>
@@ -99,3 +99,7 @@
     </div>
   </div>
 </ng-template>
+
+<ng-template #indexing>
+  <div class="indexing-message" i18n="lightning.indexing-in-progress">Indexing in progress</div>
+</ng-template>

frontend/src/app/lightning/nodes-per-isp-chart/nodes-per-isp-chart.component.scss

@@ -168,3 +168,13 @@
     padding-right: 105px;
   }
 }
+
+.indexing-message {
+  font-size: 15px;
+  color: grey;
+  font-weight: bold;
+  width: 100%;
+  padding-top: 100px;
+  text-align: center;
+  height: 240px;
+}

frontend/src/app/lightning/nodes-per-isp-chart/nodes-per-isp-chart.component.ts

@@ -29,6 +29,7 @@ export class NodesPerISPChartComponent implements OnInit {
   sortBy = 'capacity';
   showUnknown = false;
   chartInstance = undefined;
+  indexingInProgress = false;
 
   @HostBinding('attr.dir') dir = 'ltr';
 
@@ -88,6 +89,8 @@ export class NodesPerISPChartComponent implements OnInit {
 
                 this.prepareChartOptions(data.ispRanking);
 
+                this.indexingInProgress = !data.ispRanking.length;
+
                 return {
                   taggedISP: data.ispRanking.length,
                   clearnetCapacity: data.clearnetCapacity,