Add CoreModule (#3149)

apps/web/src/app/core/router.service.ts

@@ -0,0 +1,56 @@
+import { Injectable } from "@angular/core";
+import { Title } from "@angular/platform-browser";
+import { ActivatedRoute, NavigationEnd, Router } from "@angular/router";
+import { filter } from "rxjs";
+
+import { I18nService } from "@bitwarden/common/abstractions/i18n.service";
+
+@Injectable()
+export class RouterService {
+  private previousUrl: string = undefined;
+  private currentUrl: string = undefined;
+
+  constructor(
+    private router: Router,
+    private activatedRoute: ActivatedRoute,
+    private titleService: Title,
+    i18nService: I18nService
+  ) {
+    this.currentUrl = this.router.url;
+
+    router.events
+      .pipe(filter((e) => e instanceof NavigationEnd))
+      .subscribe((event: NavigationEnd) => {
+        this.currentUrl = event.url;
+
+        let title = i18nService.t("pageTitle", "Bitwarden");
+        let child = this.activatedRoute.firstChild;
+        while (child.firstChild) {
+          child = child.firstChild;
+        }
+
+        const titleId: string = child?.snapshot?.data?.titleId;
+        const rawTitle: string = child?.snapshot?.data?.title;
+        const updateUrl = !child?.snapshot?.data?.doNotSaveUrl ?? true;
+
+        if (titleId != null || rawTitle != null) {
+          const newTitle = rawTitle != null ? rawTitle : i18nService.t(titleId);
+          if (newTitle != null && newTitle !== "") {
+            title = newTitle + " | " + title;
+          }
+        }
+        this.titleService.setTitle(title);
+        if (updateUrl) {
+          this.setPreviousUrl(this.currentUrl);
+        }
+      });
+  }
+
+  getPreviousUrl() {
+    return this.previousUrl;
+  }
+
+  setPreviousUrl(url: string) {
+    this.previousUrl = url;
+  }
+}