import { beforeEach, describe, expect, it, vi } from 'vitest';

vi.mock('../../lib/sql.js', () => ({ sql: vi.fn() }));
vi.mock('../../lib/pricing/price-history.js', () => ({
  getPriceHistoryPoints: vi.fn(),
}));

import { sql } from '../../lib/sql.js';
import { getPriceHistoryPoints } from '../../lib/pricing/price-history.js';
import handler from '../../pages/api/cards/[id]/price-history.js';

function createRes() {
  const res = {
    statusCode: 200,
    body: null,
    status(code) {
      res.statusCode = code;
      return res;
    },
    json(data) {
      res.body = data;
      return res;
    },
  };
  return res;
}

describe('GET /api/cards/[id]/price-history', () => {
  beforeEach(() => {
    vi.clearAllMocks();
    sql.mockResolvedValue({ rows: [{ id: 42 }] });
    getPriceHistoryPoints.mockResolvedValue([
      { date: '2026-01-01', amount: 1.25, source: 'scryfall', priceType: 'market', currency: 'USD' },
    ]);
  });

  it('returns 400 for invalid card id', async () => {
    const req = { method: 'GET', query: { id: 'nope' } };
    const res = createRes();

    await handler(req, res);

    expect(res.statusCode).toBe(400);
    expect(sql).not.toHaveBeenCalled();
  });

  it('returns 400 when days is out of range', async () => {
    const req = { method: 'GET', query: { id: '42', days: '999' } };
    const res = createRes();

    await handler(req, res);

    expect(res.statusCode).toBe(400);
    expect(getPriceHistoryPoints).not.toHaveBeenCalled();
  });

  it('returns 404 when card does not exist', async () => {
    sql.mockResolvedValue({ rows: [] });
    const req = { method: 'GET', query: { id: '42', days: '30' } };
    const res = createRes();

    await handler(req, res);

    expect(res.statusCode).toBe(404);
  });

  it('returns points for a valid request', async () => {
    const req = { method: 'GET', query: { id: '42', days: '30' } };
    const res = createRes();

    await handler(req, res);

    expect(res.statusCode).toBe(200);
    expect(getPriceHistoryPoints).toHaveBeenCalledWith(42, { days: 30 });
    expect(res.body.points).toHaveLength(1);
    expect(res.body.points[0].amount).toBe(1.25);
  });
});