import { describe, expect, it } from "vitest";
import { sha256Hex, signVolcengineRequest } from "@/lib/volcengine/signature";

describe("Volcengine Visual signing", () => {
  it("creates canonical request and signed headers", () => {
    const signed = signVolcengineRequest({
      method: "POST",
      endpoint: "https://visual.volcengineapi.com",
      query: {
        Version: "2022-08-31",
        Action: "CVSync2AsyncSubmitTask"
      },
      body: JSON.stringify({ req_key: "jimeng_seedream46_cvtob", prompt: "test" }),
      accessKeyId: "ak",
      secretAccessKey: "sk",
      region: "cn-north-1",
      service: "cv",
      date: new Date("2026-05-28T00:00:00Z")
    });
    expect(signed.url).toBe("https://visual.volcengineapi.com/?Action=CVSync2AsyncSubmitTask&Version=2022-08-31");
    expect(signed.headers.Authorization).toContain("HMAC-SHA256 Credential=ak/20260528/cn-north-1/cv/request");
    expect(signed.headers["X-Content-Sha256"]).toBe(sha256Hex(JSON.stringify({ req_key: "jimeng_seedream46_cvtob", prompt: "test" })));
    expect(signed.canonicalRequest).toContain("content-type;host;x-content-sha256;x-date");
  });
});