import { describe, expect, it } from "vitest";
import * as shared from "../src/index.js";

function messageSchema(): { safeParse(value: unknown): { success: boolean } } {
  const candidate = Reflect.get(shared, "MessageInputSchema");
  expect(candidate, "MessageInputSchema must be exported").toBeDefined();
  return candidate;
}

describe("MessageInputSchema", () => {
  it("accepts text-only, image-only, and combined messages", () => {
    expect(messageSchema().safeParse({ text: "hello", attachmentIds: [] }).success).toBe(true);
    expect(messageSchema().safeParse({ text: "", attachmentIds: ["att_123"] }).success).toBe(true);
    expect(messageSchema().safeParse({ text: "look", attachmentIds: ["att_123"] }).success).toBe(true);
  });

  it("rejects a message without text or attachments", () => {
    expect(messageSchema().safeParse({ text: "   ", attachmentIds: [] }).success).toBe(false);
  });

  it("rejects duplicate or malformed attachment ids", () => {
    expect(messageSchema().safeParse({ text: "x", attachmentIds: ["att_1", "att_1"] }).success).toBe(false);
    expect(messageSchema().safeParse({ text: "x", attachmentIds: ["../secret"] }).success).toBe(false);
  });
});