feat(payment): expand Stripe methods and checkout handoff

src/data/repositories/auth_repository.ts

@@ -1,6 +1,10 @@
 import { ExceptionHandler } from "@/core/errors";
 import type { IAuthRepository } from "@/data/repositories/interfaces";
 import {
+  CheckoutHandoffConsumeRequestSchema,
+  CheckoutHandoffCreateRequestSchema,
+  type CheckoutHandoffCreateResponse,
+  type CheckoutIntent,
   FacebookIdentityRequestSchema,
   FacebookLoginRequestSchema,
   FbIdLoginRequestSchema,
@@ -276,6 +280,30 @@ export class AuthRepository implements IAuthRepository {
     });
   }
 
+  /** 创建订单前生成一次性外部浏览器支付交接链接。 */
+  async createCheckoutHandoff(
+    checkoutIntent: CheckoutIntent,
+  ): Promise<Result<CheckoutHandoffCreateResponse>> {
+    return Result.wrap(() =>
+      this.api.createCheckoutHandoff(
+        CheckoutHandoffCreateRequestSchema.parse(checkoutIntent),
+      ),
+    );
+  }
+
+  /** 消费支付交接凭证，保存后端签发的正式登录态并返回购买意图。 */
+  async consumeCheckoutHandoff(
+    handoffToken: string,
+  ): Promise<Result<CheckoutIntent>> {
+    return Result.wrap(async () => {
+      const response = await this.api.consumeCheckoutHandoff(
+        CheckoutHandoffConsumeRequestSchema.parse({ handoffToken }),
+      );
+      await this._saveLoginData(response, response.loginStatus);
+      return response.checkoutIntent;
+    });
+  }
+
   /**
    * 刷新 token：先读本地的 refresh token，空则直接返回错误；
    * 调用 API 成功后写回新的 login token + refresh token。