import { describe, expect, it } from "vitest";
import {
  VIDEO_DURATION_AUTO,
  VIDEO_DURATION_DEFAULT,
  VIDEO_DURATION_MAX,
  VIDEO_DURATION_MIN,
  clampVideoDuration,
  normalizeVideoDuration,
  normalizeVideoRatio,
  normalizeVideoResolution
} from "@/lib/video-settings";

describe("video settings", () => {
  it("clamps duration to the supported range", () => {
    expect(clampVideoDuration(2)).toBe(VIDEO_DURATION_MIN);
    expect(clampVideoDuration(999)).toBe(VIDEO_DURATION_MAX);
    expect(clampVideoDuration(12.6)).toBe(13);
  });

  it("supports Seedance auto duration only when allowed", () => {
    expect(normalizeVideoDuration(VIDEO_DURATION_AUTO)).toBe(VIDEO_DURATION_AUTO);
    expect(clampVideoDuration(VIDEO_DURATION_AUTO, VIDEO_DURATION_DEFAULT, { allowAuto: false })).toBe(VIDEO_DURATION_MIN);
  });

  it("keeps empty duration optional and falls back for invalid values", () => {
    expect(normalizeVideoDuration(undefined)).toBeUndefined();
    expect(normalizeVideoDuration("")).toBeUndefined();
    expect(clampVideoDuration("not-a-number")).toBe(VIDEO_DURATION_DEFAULT);
  });

  it("normalizes ratio and resolution to Seedance 2.0 supported values", () => {
    expect(normalizeVideoRatio("21:9")).toBe("21:9");
    expect(normalizeVideoRatio("bad-ratio")).toBe("9:16");
    expect(normalizeVideoResolution("1080p", "doubao-seedance-2-0-260128")).toBe("1080p");
    expect(normalizeVideoResolution("1080p", "doubao-seedance-2-0-fast-260128")).toBe("720p");
  });
});