[enterprise] implement subdomain logo cache buster

frontend/src/app/components/master-page/master-page.component.html

@@ -16,9 +16,9 @@
   </ng-container>
 
   <a class="navbar-brand" [ngClass]="{'dual-logos': subdomain}" [routerLink]="['/' | relativeUrl]" (click)="brandClick($event)">
-  <ng-template [ngIf]="subdomain">
+  <ng-template [ngIf]="subdomain && enterpriseInfo">
     <div class="subdomain_container">
-      <img [src]="'/api/v1/services/enterprise/images/' + subdomain + '/logo'" class="subdomain_logo">
+      <img [src]="'/api/v1/services/enterprise/images/' + subdomain + '/logo?imageMd5=' + enterpriseInfo.imageMd5" class="subdomain_logo">
     </div>
   </ng-template>
     <ng-container *ngIf="{ val: connectionState$ | async } as connectionState">

frontend/src/app/components/master-page/master-page.component.ts

@@ -1,7 +1,7 @@
-import { Component, OnInit, Input, ViewChild } from '@angular/core';
+import { Component, OnInit, OnDestroy, Input, ViewChild } from '@angular/core';
 import { Router } from '@angular/router';
 import { Env, StateService } from '../../services/state.service';
-import { Observable, merge, of } from 'rxjs';
+import { Observable, merge, of, Subscription } from 'rxjs';
 import { LanguageService } from '../../services/language.service';
 import { EnterpriseService } from '../../services/enterprise.service';
 import { NavigationService } from '../../services/navigation.service';
@@ -14,7 +14,7 @@ import { ApiService } from '../../services/api.service';
   templateUrl: './master-page.component.html',
   styleUrls: ['./master-page.component.scss'],
 })
-export class MasterPageComponent implements OnInit {
+export class MasterPageComponent implements OnInit, OnDestroy {
   @Input() headerVisible = true;
   @Input() footerVisibleOverride: boolean | null = null;
 
@@ -32,6 +32,9 @@ export class MasterPageComponent implements OnInit {
   user: any = undefined;
   servicesEnabled = false;
   menuOpen = false;
+  
+  enterpriseInfo: any;
+  enterpriseInfo$: Subscription;
 
   @ViewChild(MenuComponent)
   public menuComponent!: MenuComponent;
@@ -64,6 +67,9 @@ export class MasterPageComponent implements OnInit {
         this.footerVisible = this.footerVisibleOverride;
       }
     });
+    this.enterpriseInfo$ = this.enterpriseService.info$.subscribe(info => {
+      this.enterpriseInfo = info;
+    });
     
     this.servicesEnabled = this.officialMempoolSpace && this.stateService.env.ACCELERATOR === true && this.stateService.network === '';
     this.refreshAuth();
@@ -72,6 +78,12 @@ export class MasterPageComponent implements OnInit {
     this.menuOpen = isServicesPage && !this.isSmallScreen();
   }
 
+  ngOnDestroy() {
+    if (this.enterpriseInfo$) {
+      this.enterpriseInfo$.unsubscribe();
+    }
+  }
+
   collapse(): void {
     this.navCollapsed = !this.navCollapsed;
   }

frontend/src/app/services/enterprise.service.ts

@@ -4,6 +4,7 @@ import { ApiService } from './api.service';
 import { SeoService } from './seo.service';
 import { StateService } from './state.service';
 import { ActivatedRoute } from '@angular/router';
+import { BehaviorSubject } from 'rxjs';
 
 @Injectable({
   providedIn: 'root'
@@ -11,9 +12,9 @@ import { ActivatedRoute } from '@angular/router';
 export class EnterpriseService {
   exclusiveHostName = '.mempool.space';
   subdomain: string | null = null;
-  info: object = {};
   statsUrl: string;
   siteId: number;
+  info$: BehaviorSubject<object> = new BehaviorSubject(null);
 
   constructor(
     @Inject(DOCUMENT) private document: Document,
@@ -47,9 +48,9 @@ export class EnterpriseService {
 
   fetchSubdomainInfo(): void {
     this.apiService.getEnterpriseInfo$(this.subdomain).subscribe((info) => {
-      this.info = info;
       this.insertMatomo(info.site_id);
       this.seoService.setEnterpriseTitle(info.title);
+      this.info$.next(info);
     },
     (error) => {
       if (error.status === 404) {