import {describe, it, expect, vi, afterEach} from 'vitest'
import {GET} from '../route'

function fakeUpstreamResponse({status = 200, headers = {}, body = 'audio-bytes'} = {}) {
  return {
    status,
    ok: status >= 200 && status < 300,
    body,
    headers: {
      get: key => headers[key.toLowerCase()] ?? null
    }
  }
}

describe('GET /api/mizik-stream/[id]', () => {
  const originalFetch = global.fetch

  afterEach(() => {
    global.fetch = originalFetch
    vi.restoreAllMocks()
  })

  it('n\'expose pas les identifiants au client, uniquement l\'id dans l\'URL amont', async () => {
    global.fetch = vi.fn(async () => fakeUpstreamResponse())

    const request = new Request('http://localhost/api/mizik-stream/42')
    await GET(request, {params: Promise.resolve({id: '42'})})

    const [calledUrl] = global.fetch.mock.calls[0]
    expect(calledUrl).toContain('id=42')
    expect(calledUrl).toMatch(/[?&]u=/)
    expect(calledUrl).toMatch(/[?&]p=/)
  })

  it('transmet l\'en-tête Range pour permettre le seek audio', async () => {
    global.fetch = vi.fn(async () => fakeUpstreamResponse({status: 206, headers: {'content-range': 'bytes 0-99/200'}}))

    const request = new Request('http://localhost/api/mizik-stream/42', {headers: {range: 'bytes=0-99'}})
    const response = await GET(request, {params: Promise.resolve({id: '42'})})

    const [, options] = global.fetch.mock.calls[0]
    expect(options.headers.range).toBe('bytes=0-99')
    expect(response.status).toBe(206)
    expect(response.headers.get('content-range')).toBe('bytes 0-99/200')
  })

  it('renvoie le flux et le statut renvoyés par le serveur Funkwhale', async () => {
    global.fetch = vi.fn(async () => fakeUpstreamResponse({status: 200, headers: {'content-type': 'audio/mpeg'}}))

    const request = new Request('http://localhost/api/mizik-stream/7')
    const response = await GET(request, {params: Promise.resolve({id: '7'})})

    expect(response.status).toBe(200)
    expect(response.headers.get('content-type')).toBe('audio/mpeg')
  })

  it('renvoie une erreur JSON si le serveur audio répond en erreur', async () => {
    global.fetch = vi.fn(async () => fakeUpstreamResponse({status: 401, headers: {'content-type': 'application/json'}, body: '{"error": "unauthorized"}'}))

    const request = new Request('http://localhost/api/mizik-stream/7')
    const response = await GET(request, {params: Promise.resolve({id: '7'})})

    expect(response.status).toBe(401)
    expect(response.headers.get('content-type')).toContain('application/json')
    const json = await response.json()
    expect(json.error).toContain('401')
  })
})