import { describe, expect, mock, test } from "bun:test";
import type { NextRequest } from "next/server";

const getUserRankingMock = mock(async () => []);
const getModelRankingMock = mock(async () => []);
const getChannelRankingMock = mock(async () => []);
const getLogsMock = mock(async () => ({ logs: [], total: 0, page: 1, page_size: 100 }));

mock.module("@/lib/queries", () => ({
  getUserRanking: getUserRankingMock,
  getModelRanking: getModelRankingMock,
  getChannelRanking: getChannelRankingMock,
  getLogs: getLogsMock,
}));

const { GET } = await import("./route");

function request(path: string) {
  return { nextUrl: new URL(`http://localhost${path}`) } as NextRequest;
}

describe("/api/rankings", () => {
  test("rejects invalid limit", async () => {
    const res = await GET(request("/api/rankings?limit=abc"));

    expect(res.status).toBe(400);
    expect(await res.json()).toEqual({
      error: "Invalid query parameter",
      field: "limit",
    });
  });

  test("clamps oversized limit before querying", async () => {
    getUserRankingMock.mockClear();

    const res = await GET(request("/api/rankings?limit=500"));

    expect(res.status).toBe(200);
    expect(getUserRankingMock.mock.calls[0]).toEqual([undefined, undefined, 100]);
  });
});