[PM-26793] Fetch premium plan from pricing service (#16858)

* Fetch premium plan from pricing service

* Resolve Claude feedback

libs/common/src/billing/abstractions/billing-api.service.abstraction.ts

@@ -1,3 +1,5 @@
+import { PremiumPlanResponse } from "@bitwarden/common/billing/models/response/premium-plan.response";
+
 import { OrganizationCreateRequest } from "../../admin-console/models/request/organization-create.request";
 import { SubscriptionCancellationRequest } from "../../billing/models/request/subscription-cancellation.request";
 import { OrganizationBillingMetadataResponse } from "../../billing/models/response/organization-billing-metadata.response";
@@ -25,6 +27,8 @@ export abstract class BillingApiServiceAbstraction {
 
   abstract getPlans(): Promise<ListResponse<PlanResponse>>;
 
+  abstract getPremiumPlan(): Promise<PremiumPlanResponse>;
+
   abstract getProviderClientInvoiceReport(providerId: string, invoiceId: string): Promise<string>;
 
   abstract getProviderInvoices(providerId: string): Promise<InvoicesResponse>;

libs/common/src/billing/models/response/premium-plan.response.ts

@@ -0,0 +1,47 @@
+import { BaseResponse } from "@bitwarden/common/models/response/base.response";
+
+export class PremiumPlanResponse extends BaseResponse {
+  seat: {
+    stripePriceId: string;
+    price: number;
+  };
+  storage: {
+    stripePriceId: string;
+    price: number;
+  };
+
+  constructor(response: any) {
+    super(response);
+
+    const seat = this.getResponseProperty("Seat");
+    if (!seat || typeof seat !== "object") {
+      throw new Error("PremiumPlanResponse: Missing or invalid 'Seat' property");
+    }
+    this.seat = new PurchasableResponse(seat);
+
+    const storage = this.getResponseProperty("Storage");
+    if (!storage || typeof storage !== "object") {
+      throw new Error("PremiumPlanResponse: Missing or invalid 'Storage' property");
+    }
+    this.storage = new PurchasableResponse(storage);
+  }
+}
+
+class PurchasableResponse extends BaseResponse {
+  stripePriceId: string;
+  price: number;
+
+  constructor(response: any) {
+    super(response);
+
+    this.stripePriceId = this.getResponseProperty("StripePriceId");
+    if (!this.stripePriceId || typeof this.stripePriceId !== "string") {
+      throw new Error("PurchasableResponse: Missing or invalid 'StripePriceId' property");
+    }
+
+    this.price = this.getResponseProperty("Price");
+    if (typeof this.price !== "number" || isNaN(this.price)) {
+      throw new Error("PurchasableResponse: Missing or invalid 'Price' property");
+    }
+  }
+}

libs/common/src/billing/services/billing-api.service.ts

@@ -1,6 +1,8 @@
 // FIXME: Update this file to be type safe and remove this and next line
 // @ts-strict-ignore
 
+import { PremiumPlanResponse } from "@bitwarden/common/billing/models/response/premium-plan.response";
+
 import { ApiService } from "../../abstractions/api.service";
 import { OrganizationCreateRequest } from "../../admin-console/models/request/organization-create.request";
 import { ListResponse } from "../../models/response/list.response";
@@ -61,10 +63,15 @@ export class BillingApiService implements BillingApiServiceAbstraction {
   }
 
   async getPlans(): Promise<ListResponse<PlanResponse>> {
-    const r = await this.apiService.send("GET", "/plans", null, false, true);
+    const r = await this.apiService.send("GET", "/plans", null, true, true);
     return new ListResponse(r, PlanResponse);
   }
 
+  async getPremiumPlan(): Promise<PremiumPlanResponse> {
+    const response = await this.apiService.send("GET", "/plans/premium", null, true, true);
+    return new PremiumPlanResponse(response);
+  }
+
   async getProviderClientInvoiceReport(providerId: string, invoiceId: string): Promise<string> {
     const response = await this.apiService.send(
       "GET",

libs/common/src/enums/feature-flag.enum.ts

@@ -30,6 +30,7 @@ export enum FeatureFlag {
   PM25379_UseNewOrganizationMetadataStructure = "pm-25379-use-new-organization-metadata-structure",
   PM24996_ImplementUpgradeFromFreeDialog = "pm-24996-implement-upgrade-from-free-dialog",
   PM24033PremiumUpgradeNewDesign = "pm-24033-updat-premium-subscription-page",
+  PM26793_FetchPremiumPriceFromPricingService = "pm-26793-fetch-premium-price-from-pricing-service",
 
   /* Key Management */
   PrivateKeyRegeneration = "pm-12241-private-key-regeneration",
@@ -115,6 +116,7 @@ export const DefaultFeatureFlagValue = {
   [FeatureFlag.PM25379_UseNewOrganizationMetadataStructure]: FALSE,
   [FeatureFlag.PM24996_ImplementUpgradeFromFreeDialog]: FALSE,
   [FeatureFlag.PM24033PremiumUpgradeNewDesign]: FALSE,
+  [FeatureFlag.PM26793_FetchPremiumPriceFromPricingService]: FALSE,
 
   /* Key Management */
   [FeatureFlag.PrivateKeyRegeneration]: FALSE,