[PM-14219] Add service for new device verification notice

libs/common/src/platform/state/state-definitions.ts

@@ -173,3 +173,7 @@ export const PREMIUM_BANNER_DISK_LOCAL = new StateDefinition("premiumBannerRepro
 });
 export const BANNERS_DISMISSED_DISK = new StateDefinition("bannersDismissed", "disk");
 export const VAULT_BROWSER_UI_ONBOARDING = new StateDefinition("vaultBrowserUiOnboarding", "disk");
+export const NEW_DEVICE_VERIFICATION_NOTICE = new StateDefinition(
+  "newDeviceVerificationNotice",
+  "disk",
+);

libs/vault/src/services/new-device-verification-notice.service.ts

@@ -0,0 +1,42 @@
+import { Injectable } from "@angular/core";
+import { Observable } from "rxjs";
+
+import {
+  ActiveUserState,
+  StateProvider,
+  UserKeyDefinition,
+  NEW_DEVICE_VERIFICATION_NOTICE,
+} from "@bitwarden/common/platform/state";
+
+export type NewDeviceVerificationNotice = {
+  last_dismissal: string;
+  permanent_dismissal: boolean;
+};
+
+const NEW_DEVICE_VERIFICATION_NOTICE_KEY = new UserKeyDefinition<NewDeviceVerificationNotice>(
+  NEW_DEVICE_VERIFICATION_NOTICE,
+  "noticeState",
+  {
+    deserializer: (jsonData) => jsonData,
+    clearOn: [],
+  },
+);
+
+@Injectable()
+export class NewDeviceVerificationNoticeService {
+  private noticeState: ActiveUserState<NewDeviceVerificationNotice>;
+  noticeState$: Observable<NewDeviceVerificationNotice>;
+
+  constructor(private stateProvider: StateProvider) {
+    this.noticeState = this.stateProvider.getActive(NEW_DEVICE_VERIFICATION_NOTICE_KEY);
+    this.noticeState$ = this.noticeState.state$;
+  }
+
+  async updateNewDeviceVerificationNoticeState(
+    newState: NewDeviceVerificationNotice,
+  ): Promise<void> {
+    await this.noticeState.update(() => {
+      return { ...newState };
+    });
+  }
+}