From 4ca87e730c3e24b166bbbf7f636feee5215adbbc Mon Sep 17 00:00:00 2001
From: Mononaut <github@monospace.live>
Date: Sat, 27 Aug 2022 19:02:22 +0000
Subject: [PATCH] Fix unfurls for lightning pages with no geodata

---
 .../channel/channel-preview.component.html     |  2 +-
 .../lightning/node/node-preview.component.html |  2 +-
 .../nodes-channels-map.component.ts            | 18 +++++++++++++++++-
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/frontend/src/app/lightning/channel/channel-preview.component.html b/frontend/src/app/lightning/channel/channel-preview.component.html
index c98929931..a847975c2 100644
--- a/frontend/src/app/lightning/channel/channel-preview.component.html
+++ b/frontend/src/app/lightning/channel/channel-preview.component.html
@@ -58,7 +58,7 @@
       </table>
     </div>
     <div class="col-md map-col">
-      <app-nodes-channels-map *ngIf="!error" [style]="'channelpage'" [channel]="channelGeo" [fitContainer]="true" (readyEvent)="onMapReady()"></app-nodes-channels-map>
+      <app-nodes-channels-map *ngIf="!error" [style]="'channelpage'" [channel]="channelGeo" [fitContainer]="true" [placeholder]="true" (readyEvent)="onMapReady()"></app-nodes-channels-map>
     </div>
   </div>
 </div>
diff --git a/frontend/src/app/lightning/node/node-preview.component.html b/frontend/src/app/lightning/node/node-preview.component.html
index 0bb7255a6..a94882161 100644
--- a/frontend/src/app/lightning/node/node-preview.component.html
+++ b/frontend/src/app/lightning/node/node-preview.component.html
@@ -52,7 +52,7 @@
       </table>
     </div>
     <div class="col-md map-col">
-      <app-nodes-channels-map *ngIf="!error" [style]="'nodepage'" [publicKey]="node.public_key" [fitContainer]="true" (readyEvent)="onMapReady()"></app-nodes-channels-map>
+      <app-nodes-channels-map *ngIf="!error" [style]="'nodepage'" [publicKey]="node.public_key" [fitContainer]="true" [placeholder]="true" [hasLocation]="!!node.as_number" (readyEvent)="onMapReady()"></app-nodes-channels-map>
     </div>
   </div>
 </div>
diff --git a/frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.ts b/frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.ts
index 91de48186..c6a2f8f5c 100644
--- a/frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.ts
+++ b/frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.ts
@@ -22,6 +22,7 @@ export class NodesChannelsMap implements OnInit {
   @Input() channel: any[] = [];
   @Input() fitContainer = false;
   @Input() hasLocation = true;
+  @Input() placeholder = false;
   @Output() readyEvent = new EventEmitter();
 
   channelsObservable: Observable<any>; 
@@ -201,11 +202,26 @@ export class NodesChannelsMap implements OnInit {
 
   prepareChartOptions(nodes, channels) {
     let title: object;
-    if (channels.length === 0) {
+    if (channels.length === 0 && !this.placeholder) {
       this.chartOptions = null;
       return;
     }
 
+    // empty map fallback
+    if (channels.length === 0 && this.placeholder) {
+      title = {
+        textStyle: {
+          color: 'white',
+          fontSize: 18
+        },
+        text: $localize`No geolocation data available`,
+        left: 'center',
+        top: 'center'
+      };
+      this.zoom = 1.5;
+      this.center = [0, 20];
+    }
+
     this.chartOptions = {
       silent: this.style === 'widget',
       title: title ?? undefined,