import React from 'react'
import { describe, expect, it, vi, beforeEach, afterEach } from 'vitest'
import { render, screen, waitFor, within } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import AdminUploadQueue from './AdminUploadQueue'

function makePendingUpload(overrides = {}) {
  return {
    id: '11111111-1111-1111-1111-111111111111',
    title: 'Neon Skyline',
    type: 'image',
    preview_path: 'tmp/drafts/1111/preview.webp',
    ...overrides,
  }
}

describe('AdminUploadQueue', () => {
  beforeEach(() => {
    window.axios = {
      get: vi.fn(),
      post: vi.fn(),
    }
  })

  afterEach(() => {
    vi.restoreAllMocks()
  })

  it('renders pending list with accessible controls', async () => {
    const upload = makePendingUpload()
    window.axios.get.mockResolvedValueOnce({ data: { data: [upload] } })

    render(<AdminUploadQueue />)

    expect(screen.getByRole('heading', { name: 'Pending Upload Moderation' })).not.toBeNull()

    const item = await screen.findByRole('listitem', { name: `Pending upload ${upload.id}` })
    expect(within(item).getByText('Neon Skyline')).not.toBeNull()
    expect(within(item).getByRole('textbox', { name: `Moderation note for ${upload.id}` })).not.toBeNull()
    expect(within(item).getByRole('button', { name: `Approve upload ${upload.id}` })).not.toBeNull()
    expect(within(item).getByRole('button', { name: `Reject upload ${upload.id}` })).not.toBeNull()
  })

  it('approves upload and removes it from queue', async () => {
    const upload = makePendingUpload()
    window.axios.get.mockResolvedValueOnce({ data: { data: [upload] } })
    window.axios.post.mockResolvedValueOnce({ data: { success: true } })

    render(<AdminUploadQueue />)

    const item = await screen.findByRole('listitem', { name: `Pending upload ${upload.id}` })
    await userEvent.click(within(item).getByRole('button', { name: `Approve upload ${upload.id}` }))

    await waitFor(() => {
      expect(screen.queryByRole('listitem', { name: `Pending upload ${upload.id}` })).toBeNull()
    })

    expect(window.axios.post).toHaveBeenCalledWith(`/api/admin/uploads/${upload.id}/approve`, { note: '' })
  })

  it('rejects upload with note and removes it from queue', async () => {
    const upload = makePendingUpload({ id: '22222222-2222-2222-2222-222222222222', title: 'Retro Pack' })
    window.axios.get.mockResolvedValueOnce({ data: { data: [upload] } })
    window.axios.post.mockResolvedValueOnce({ data: { success: true } })

    render(<AdminUploadQueue />)

    const item = await screen.findByRole('listitem', { name: `Pending upload ${upload.id}` })

    await userEvent.type(
      within(item).getByRole('textbox', { name: `Moderation note for ${upload.id}` }),
      'Needs better quality screenshots'
    )

    await userEvent.click(within(item).getByRole('button', { name: `Reject upload ${upload.id}` }))

    await waitFor(() => {
      expect(screen.queryByRole('listitem', { name: `Pending upload ${upload.id}` })).toBeNull()
    })

    expect(window.axios.post).toHaveBeenCalledWith(`/api/admin/uploads/${upload.id}/reject`, {
      note: 'Needs better quality screenshots',
    })
  })

  it('shows API failure message and keeps item when moderation action fails', async () => {
    const upload = makePendingUpload({ id: '33333333-3333-3333-3333-333333333333' })
    window.axios.get.mockResolvedValueOnce({ data: { data: [upload] } })
    window.axios.post.mockRejectedValueOnce({
      response: { data: { message: 'Moderation API failed.' } },
    })

    render(<AdminUploadQueue />)

    const item = await screen.findByRole('listitem', { name: `Pending upload ${upload.id}` })
    await userEvent.click(within(item).getByRole('button', { name: `Approve upload ${upload.id}` }))

    const alert = await screen.findByRole('alert')
    expect(alert.textContent).toContain('Moderation API failed.')
    expect(screen.getByRole('listitem', { name: `Pending upload ${upload.id}` })).not.toBeNull()
  })

  it('shows empty state when no pending uploads exist', async () => {
    window.axios.get.mockResolvedValueOnce({ data: { data: [] } })

    render(<AdminUploadQueue />)

    const empty = await screen.findByText('No pending uploads.')
    expect(empty).not.toBeNull()
    expect(screen.queryAllByRole('listitem').length).toBe(0)
  })
})