Set canonical url to public page

src/app/core/canonocal-url/canonocal-url.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing'
+
+import { CanonocalUrlService } from './canonocal-url.service'
+
+describe('CanonocalUrlService', () => {
+  let service: CanonocalUrlService
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({})
+    service = TestBed.inject(CanonocalUrlService)
+  })
+
+  it('should be created', () => {
+    expect(service).toBeTruthy()
+  })
+})

src/app/core/canonocal-url/canonocal-url.service.ts

@@ -0,0 +1,54 @@
+import { DOCUMENT } from '@angular/common'
+import { Inject, Injectable } from '@angular/core'
+import { NavigationEnd, Router } from '@angular/router'
+import { filter, map } from 'rxjs/operators'
+import { ORCID_REGEXP } from 'src/app/constants'
+import { environment } from 'src/environments/environment'
+
+@Injectable({
+  providedIn: 'root',
+})
+export class CanonocalUrlService {
+  constructor(@Inject(DOCUMENT) private doc: any, private _router: Router) {
+    this.init()
+  }
+
+  private init() {
+    this._router.events
+      .pipe(
+        filter((event) => event instanceof NavigationEnd),
+        map((event: NavigationEnd) => event as NavigationEnd)
+      )
+      .subscribe((event) => {
+        if (
+          event?.url.startsWith('/my-orcid') ||
+          !ORCID_REGEXP.test(event?.url)
+        ) {
+          // Remove canonical url if the route is not public page
+          this.removeCanonicalUrl()
+        }
+      })
+  }
+
+  setCanonicalUrl(publicOrcid) {
+    // Just in case there is another canonical link already
+    this.removeCanonicalUrl()
+    let canonicalUrl =
+      'https:' +
+      environment.BASE_URL +
+      (environment.BASE_URL.endsWith('/') ? publicOrcid : '/' + publicOrcid)
+    let link: HTMLLinkElement = this.doc.createElement('link')
+
+    link.setAttribute('rel', 'canonical')
+    link.setAttribute('href', canonicalUrl)
+    this.doc.head.appendChild(link)
+  }
+  removeCanonicalUrl() {
+    this.doc.head.querySelectorAll('link').forEach((link) => {
+      let attributeRel = link.getAttribute('rel')
+      if (attributeRel && attributeRel == 'canonical') {
+        link.parentNode.removeChild(link)
+      }
+    })
+  }
+}

src/app/record/pages/my-orcid/my-orcid.component.ts

@@ -5,7 +5,7 @@ import {
   OnDestroy,
   OnInit,
 } from '@angular/core'
-import { ActivatedRoute, Router } from '@angular/router'
+import { ActivatedRoute, NavigationEnd, Router } from '@angular/router'
 import { PlatformInfo, PlatformInfoService } from 'src/app/cdk/platform-info'
 import { ORCID_REGEXP } from 'src/app/constants'
 import { first, switchMap, take, takeUntil, tap } from 'rxjs/operators'
@@ -21,6 +21,10 @@ import { WINDOW } from 'src/app/cdk/window'
 import { TogglzService } from 'src/app/core/togglz/togglz.service'
 import { HelpHeroService } from 'src/app/core/help-hero/help-hero.service'
 import { ScriptService } from '../../../core/crazy-egg/script.service'
+import { DOCUMENT } from '@angular/common'
+import { environment } from 'src/environments/environment'
+import { filter, map } from 'rxjs/operators'
+import { CanonocalUrlService } from 'src/app/core/canonocal-url/canonocal-url.service'
 
 @Component({
   selector: 'app-my-orcid',
@@ -80,7 +84,7 @@ export class MyOrcidComponent implements OnInit, OnDestroy {
     @Inject(WINDOW) private window: Window,
     private _togglz: TogglzService,
     private _scriptService: ScriptService,
-    private _changeDetectorRef: ChangeDetectorRef
+    private _canonocalUrlService: CanonocalUrlService
   ) {}
 
   private checkIfThisIsAPublicOrcid() {
@@ -106,6 +110,11 @@ export class MyOrcidComponent implements OnInit, OnDestroy {
   ngOnInit(): void {
     this.checkIfThisIsAPublicOrcid()
     this.affiliations = 0
+
+    if (this.publicOrcid) {
+      this._canonocalUrlService.setCanonicalUrl(this.publicOrcid)
+    }
+
     // Remove fragment temporally, to adding back when items have loaded
     this.route.fragment.pipe(take(1)).subscribe((fragment) => {
       if (fragment) {