import { afterEach, describe, expect, it, vi } from 'vitest'
import { BackendExplainContentProvider } from '@/data/providers/backendExplainContentProvider'

const installRequest = (handler: (url: string) => unknown) => {
  vi.stubGlobal('uni', {
    request: ({ url, success }: { url: string, success: (response: unknown) => void }) => {
      success({ statusCode: 200, data: handler(url) })
    }
  })
}

describe('BackendExplainContentProvider hall stop paging', () => {
  afterEach(() => vi.unstubAllGlobals())

  it('uses the paged hall endpoint and maps independent pages without outlines', async () => {
    const requests: string[] = []
    installRequest((url) => {
      requests.push(url)
      if (url.includes('/catalog/halls?')) return { code: 0, data: [{ id: 'hall-1', name: '恐龙厅', floorId: 'f1' }] }
      const pageNo = new URL(url, 'http://localhost').searchParams.get('pageNo')
      return {
        code: 0,
        data: {
          total: 30,
          list: pageNo === '1'
            ? [{ stopId: 'stop-1', name: '对象一', imageStatus: 'READY', coverImageUrl: '/one.jpg', playTargetType: 'STOP', playTargetId: 'target-1' }]
            : [{ stopId: 'stop-2', name: '对象二', imageStatus: 'MISSING', playTargetType: 'STOP', playTargetId: 'target-2' }]
        }
      }
    })
    const provider = new BackendExplainContentProvider()
    const [first, second] = await Promise.all([
      provider.listGuideStopsPageByHall('hall-1', 1, 20),
      provider.listGuideStopsPageByHall('hall-1', 2, 20)
    ])

    expect(first).toMatchObject({ total: 30, pageNo: 1, pageSize: 20, hasMore: true })
    expect(first.items[0]).toMatchObject({ id: 'stop-1', hallName: '恐龙厅', playTargetId: 'target-1' })
    expect(second.items.map((item) => item.id)).toEqual(['stop-2'])
    expect(requests.filter((url) => url.includes('/stops/page'))).toHaveLength(2)
    expect(requests.some((url) => url.includes('/outlines'))).toBe(false)
    expect(requests.find((url) => url.includes('pageNo=1') && url.includes('pageSize=20') && url.includes('lang=zh-CN'))).toBeTruthy()
  })

  it('clears failed inflight requests so the page can be retried', async () => {
    let attempts = 0
    installRequest((url) => {
      if (url.includes('/catalog/halls?')) return { code: 0, data: [{ id: 'hall-1', name: '恐龙厅' }] }
      attempts += 1
      return attempts === 1 ? { code: 500, msg: 'temporary failure' } : { code: 0, data: { list: [], total: 0 } }
    })
    const provider = new BackendExplainContentProvider()
    await expect(provider.listGuideStopsPageByHall('hall-1', 1, 20)).rejects.toThrow('temporary failure')
    await expect(provider.listGuideStopsPageByHall('hall-1', 1, 20)).resolves.toMatchObject({ items: [], total: 0, hasMore: false })
    expect(attempts).toBe(2)
  })
})