import test from "node:test";
import assert from "node:assert/strict";
import { parseGenerateRequest } from "../lib/request-schema";

test("parseGenerateRequest returns normalized payload", () => {
  const payload = parseGenerateRequest(
    {
      prompt: "A premium product poster",
      size: "1536x1024",
      quality: "high",
      outputFormat: "png",
      background: "auto",
      count: 2,
      moderation: "auto",
      user: "browser-demo-session-id",
    },
    "gpt-image-2",
  );

  assert.deepEqual(payload, {
    model: "gpt-image-2",
    prompt: "A premium product poster",
    size: "1536x1024",
    quality: "high",
    n: 2,
    moderation: "auto",
    output_format: "png",
    background: "auto",
    user: "browser-demo-session-id",
  });
});

test("parseGenerateRequest rejects transparent jpeg output", () => {
  assert.throws(
    () =>
      parseGenerateRequest(
        {
          prompt: "A cutout product shot",
          outputFormat: "jpeg",
          background: "transparent",
        },
        "gpt-image-2",
      ),
    /JPEG 不支持透明背景/,
  );
});

test("parseGenerateRequest rejects oversized count", () => {
  assert.throws(
    () =>
      parseGenerateRequest(
        {
          prompt: "too many",
          count: 5,
        },
        "gpt-image-2",
      ),
    /最多生成 4 张图片/,
  );
});