import { RawPayloadEncryptionService } from "../src/common/raw-payload-encryption.service";

describe("RawPayloadEncryptionService", () => {
  it("stores raw transaction payloads as encrypted envelopes", () => {
    const encryption = {
      encrypt: jest.fn((value: string) => `cipher:${Buffer.from(value).toString("base64")}`),
      decrypt: jest.fn((value: string) => Buffer.from(value.replace("cipher:", ""), "base64").toString("utf8")),
    };
    const service = new RawPayloadEncryptionService(encryption as never);

    const encrypted = service.encrypt({ transaction_id: "tx_1", merchant: "Coffee" }) as {
      encrypted: boolean;
      version: number;
      ciphertext: string;
      transaction_id?: string;
    };

    expect(encrypted).toEqual({
      encrypted: true,
      version: 1,
      ciphertext: expect.stringMatching(/^cipher:/),
    });
    expect(encrypted).not.toHaveProperty("transaction_id");
    expect(service.decrypt(encrypted)).toEqual({ transaction_id: "tx_1", merchant: "Coffee" });
  });
});