apply custom meta tags

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

@@ -51,6 +51,7 @@ export class EnterpriseService {
     if (this.stateService.env.customize?.branding) {
       const info = this.stateService.env.customize?.branding;
       this.insertMatomo(info.site_id);
+      this.seoService.setCustomMeta(this.stateService.env.customize);
       this.seoService.setEnterpriseTitle(info.title, true);
       this.info$.next(info);
     } else {

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

@@ -12,6 +12,9 @@ import { LanguageService } from '@app/services/language.service';
 export class OpenGraphService {
   network = '';
   defaultImageUrl = '';
+  defaultImageType = 'image/png';
+  defaultImageWidth = '1000';
+  defaultImageHeight = '500';
   previewLoadingEvents = {};
   previewLoadingCount = 0;
 
@@ -25,12 +28,17 @@ export class OpenGraphService {
   ) {
     // save og:image tag from original template
     const initialOgImageTag = metaService.getTag("property='og:image'");
-    this.defaultImageUrl = initialOgImageTag?.content || 'https://mempool.space/resources/previews/mempool-space-preview.jpg';
+    this.defaultImageUrl = (this.stateService.env.customize?.meta?.image?.src ? this.stateService.env.customize.meta.image.src : initialOgImageTag?.content) || 'https://mempool.space/resources/previews/mempool-space-preview.jpg';
+    this.defaultImageType = (this.stateService.env.customize?.meta?.image?.type ? this.stateService.env.customize.meta.image.type : 'image/png');
+    this.defaultImageWidth = (this.stateService.env.customize?.meta?.image?.width ? this.stateService.env.customize.meta.image.width : '1000');
+    this.defaultImageHeight = (this.stateService.env.customize?.meta?.image?.height ? this.stateService.env.customize.meta.image.height : '500');
     this.router.events.pipe(
       filter(event => event instanceof NavigationEnd),
       map(() => this.activatedRoute),
       map(route => {
-        while (route.firstChild) route = route.firstChild;
+        while (route.firstChild) {
+          route = route.firstChild;
+        }
         return route;
       }),
       filter(route => route.outlet === 'primary'),
@@ -45,7 +53,7 @@ export class OpenGraphService {
 
     // expose routing method to global scope, so we can access it from the unfurler
     window['ogService'] = {
-      loadPage: (path) => { return this.loadPage(path) }
+      loadPage: (path) => { return this.loadPage(path); }
     };
   }
 
@@ -62,9 +70,9 @@ export class OpenGraphService {
   clearOgImage() {
     this.metaService.updateTag({ property: 'og:image', content: this.defaultImageUrl });
     this.metaService.updateTag({ name: 'twitter:image', content: this.defaultImageUrl });
-    this.metaService.updateTag({ property: 'og:image:type', content: 'image/png' });
-    this.metaService.updateTag({ property: 'og:image:width', content: '1000' });
-    this.metaService.updateTag({ property: 'og:image:height', content: '500' });
+    this.metaService.updateTag({ property: 'og:image:type', content: this.defaultImageType });
+    this.metaService.updateTag({ property: 'og:image:width', content: this.defaultImageWidth });
+    this.metaService.updateTag({ property: 'og:image:height', content: this.defaultImageHeight });
   }
 
   setManualOgImage(imageFilename) {

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

@@ -2,7 +2,7 @@ import { Injectable } from '@angular/core';
 import { Title, Meta } from '@angular/platform-browser';
 import { ActivatedRoute, NavigationEnd, Router } from '@angular/router';
 import { filter, map, switchMap } from 'rxjs';
-import { StateService } from '@app/services/state.service';
+import { Customization, StateService } from '@app/services/state.service';
 
 @Injectable({
   providedIn: 'root'
@@ -23,14 +23,18 @@ export class SeoService {
     private activatedRoute: ActivatedRoute,
   ) {
     // save original meta tags
-    this.baseDescription = metaService.getTag('name=\'description\'')?.content || this.baseDescription;
-    this.baseTitle = titleService.getTitle()?.split(' - ')?.[0] || this.baseTitle;
+    this.baseDescription = this.stateService.env.customize?.meta?.description || metaService.getTag('name=\'description\'')?.content || this.baseDescription;
+    this.baseTitle = this.stateService.env.customize?.meta?.title || titleService.getTitle()?.split(' - ')?.[0] || this.baseTitle;
+    if (this.stateService.env.customize?.domains?.length) {
+      this.baseDomain = this.stateService.env.customize.domains[0];
+    } else {
       try {
         const canonicalUrl = new URL(this.canonicalLink?.href || '');
         this.baseDomain = canonicalUrl?.host;
       } catch (e) {
         // leave as default
       }
+    }
 
     this.stateService.networkChanged$.subscribe((network) => this.network = network);
     this.router.events.pipe(
@@ -70,6 +74,22 @@ export class SeoService {
     this.resetTitle();
   }
 
+  setCustomMeta(customize: Customization) {
+    if (!customize.meta) {
+      return;
+    }
+    this.metaService.updateTag({ name: 'description', content: customize.meta.description});
+    this.metaService.updateTag({ name: 'twitter:description', content: customize.meta.description});
+    this.metaService.updateTag({ property: 'og:description', content: customize.meta.description});
+    this.metaService.updateTag({ name: 'twitter:image', content: customize.meta.image.src});
+    this.metaService.updateTag({ property: 'og:image', content: customize.meta.image.src});
+    this.metaService.updateTag({ property: 'og:image:type', content: customize.meta.image.type});
+    this.metaService.updateTag({ property: 'og:image:width', content: customize.meta.image.width});
+    this.metaService.updateTag({ property: 'og:image:height', content: customize.meta.image.height});
+    const domain = customize.domains?.[0] || window.location.hostname;
+    this.metaService.updateTag({ name: 'twitter:domain', content: domain});
+  }
+
   setDescription(newDescription: string): void {
     this.metaService.updateTag({ name: 'description', content: newDescription});
     this.metaService.updateTag({ name: 'twitter:description', content: newDescription});

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

@@ -22,6 +22,7 @@ export interface MarkBlockState {
 export interface ILoadingIndicators { [name: string]: number; }
 
 export interface Customization {
+  domains: string[];
   theme: string;
   enterprise?: string;
   branding: {
@@ -33,6 +34,16 @@ export interface Customization {
     footer_img?: string;
     rounded_corner: boolean;
   },
+  meta: {
+    title: string;
+    description: string;
+    image: {
+      src: string;
+      type: string;
+      width: string;
+      height: string;
+    };
+  };
   dashboard: {
     widgets: {
       component: string;