import { beforeEach, describe, expect, it, vi } from 'vitest'
import type { Request, Response } from 'express'

// ---------- Service mockeado ----------

const buscarMock = vi.hoisted(() => vi.fn())

vi.mock('../services/buscar.service.js', () => ({ buscar: buscarMock }))

import { buscarEndpoint } from './buscar.controller.js'

function req(query: Record<string, string> = {}): Request {
  return { query } as unknown as Request
}
function res(): Response {
  const json = vi.fn()
  return { json } as unknown as Response
}

beforeEach(() => {
  vi.clearAllMocks()
})

describe('buscarEndpoint (GET /api/buscar)', () => {
  it('extrae q del query string y llama buscar', async () => {
    buscarMock.mockResolvedValue([])
    const r = res()
    await buscarEndpoint(req({ q: 'María' }), r)
    expect(buscarMock).toHaveBeenCalledWith('María', 20)
    expect(r.json).toHaveBeenCalledWith([])
  })

  it('q vacío (no string) → termino vacío', async () => {
    buscarMock.mockResolvedValue([])
    const r = res()
    await buscarEndpoint(req({}), r)
    expect(buscarMock).toHaveBeenCalledWith('', 20)
  })

  it('limite válido del query string', async () => {
    buscarMock.mockResolvedValue([])
    const r = res()
    await buscarEndpoint(req({ q: 'x', limite: '10' }), r)
    expect(buscarMock).toHaveBeenCalledWith('x', 10)
  })

  it('limite inválido o > 50 se clampa a 20', async () => {
    buscarMock.mockResolvedValue([])
    const r = res()
    await buscarEndpoint(req({ q: 'x', limite: 'abc' }), r)
    expect(buscarMock).toHaveBeenCalledWith('x', 20)

    const r2 = res()
    await buscarEndpoint(req({ q: 'x', limite: '100' }), r2)
    expect(buscarMock).toHaveBeenCalledWith('x', 50)
  })

  it('devuelve los resultados del service como JSON', async () => {
    const fakeResults = [
      { tipo: 'lead', id: 'l1', nombre: 'Test', detalle: '', url: '/app/#leads' },
    ]
    buscarMock.mockResolvedValue(fakeResults)
    const r = res()
    await buscarEndpoint(req({ q: 'Test' }), r)
    expect(r.json).toHaveBeenCalledWith(fakeResults)
  })
})