/**
 * @file apiJsonGuard.test.ts
 * @description `request()` refuses a 200 that is not JSON (an index.html from a
 * proxy or dev server) with a translated error instead of the raw
 * "Unexpected token '<'" a bare `res.json()` would throw.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

import { describe, it, expect, vi, afterEach } from "vitest";
import i18n from "i18next";
import { api } from "../api";

afterEach(() => vi.unstubAllGlobals());

function stub(type: string | null, body: string) {
  vi.stubGlobal(
    "fetch",
    vi
      .fn()
      .mockResolvedValue(
        new Response(body, { status: 200, headers: type ? { "content-type": type } : {} })
      )
  );
}

describe("request() JSON guard", () => {
  it("throws EBADRESPONSE with the translated message on an HTML 200", async () => {
    stub("text/html; charset=utf-8", "<!doctype html><html></html>");
    await expect(api.aiTools.list()).rejects.toMatchObject({
      code: "EBADRESPONSE",
      message: i18n.t("errors:badResponse"),
    });
  });

  it("throws the same error when a JSON-less body fails to parse", async () => {
    stub(null, "<html>");
    await expect(api.aiTools.list()).rejects.toMatchObject({ code: "EBADRESPONSE" });
  });

  it("still parses a JSON 200", async () => {
    stub("application/json", JSON.stringify({ default: "claude", tools: [] }));
    await expect(api.aiTools.list()).resolves.toEqual({ default: "claude", tools: [] });
  });
});