// Media Understanding Common tests cover video payload sizing behavior.

import { describe, expect, it } from "vitest";

import { DEFAULT_VIDEO_MAX_BASE64_BYTES } from "./defaults.js";

import { estimateBase64Size, resolveVideoMaxBase64Bytes } from "./video.js";

describe("estimateBase64Size", () => {

it("rounds byte counts to base64 quanta", () => {

expect(estimateBase64Size(1)).toBe(4);

expect(estimateBase64Size(2)).toBe(4);

expect(estimateBase64Size(3)).toBe(4);

expect(estimateBase64Size(4)).toBe(8);

});

});

describe("resolveVideoMaxBase64Bytes", () => {

it("allows raw byte limits that expand to valid base64 boundaries", () => {

expect(resolveVideoMaxBase64Bytes(1)).toBe(4);

expect(resolveVideoMaxBase64Bytes(2)).toBe(4);

expect(resolveVideoMaxBase64Bytes(3)).toBe(4);

expect(resolveVideoMaxBase64Bytes(4)).toBe(8);

});

it("keeps the shared maximum base64 payload cap", () => {

expect(resolveVideoMaxBase64Bytes(DEFAULT_VIDEO_MAX_BASE64_BYTES)).toBe(

DEFAULT_VIDEO_MAX_BASE64_BYTES,

);

});

});

/** Resolve video base64 byte limit from raw byte limit and global cap. */

export function resolveVideoMaxBase64Bytes(maxBytes: number): number {

const expanded = Math.floor(maxBytes * (4 / 3));

const expanded = estimateBase64Size(maxBytes);

return Math.min(expanded, DEFAULT_VIDEO_MAX_BASE64_BYTES);

}