// ============================================================
// ModelServices 页面测试
// ============================================================

import { describe, it, expect, beforeEach, afterEach } from 'vitest'
import { render, screen, waitFor } from '@testing-library/react'
import { http, HttpResponse } from 'msw'
import { setupServer } from 'msw/node'
import { QueryClient, QueryClientProvider } from '@tanstack/react-query'

import ModelServices from '@/pages/ModelServices'

// ── Mock data ────────────────────────────────────────────────

const mockProviders = {
  items: [
    {
      id: 'prov-001',
      name: 'openai',
      display_name: 'OpenAI',
      base_url: 'https://api.openai.com/v1',
      api_protocol: 'openai',
      enabled: true,
      rate_limit_rpm: 500,
      rate_limit_tpm: null,
      created_at: '2026-01-01T00:00:00Z',
      updated_at: '2026-03-15T10:00:00Z',
    },
    {
      id: 'prov-002',
      name: 'anthropic',
      display_name: 'Anthropic',
      base_url: 'https://api.anthropic.com',
      api_protocol: 'anthropic',
      enabled: false,
      rate_limit_rpm: 200,
      rate_limit_tpm: null,
      created_at: '2026-02-01T00:00:00Z',
      updated_at: '2026-03-01T00:00:00Z',
    },
    {
      id: 'prov-003',
      name: 'deepseek',
      display_name: 'DeepSeek',
      base_url: 'https://api.deepseek.com/v1',
      api_protocol: 'openai',
      enabled: true,
      rate_limit_rpm: null,
      rate_limit_tpm: null,
      created_at: '2026-03-01T00:00:00Z',
      updated_at: '2026-03-01T00:00:00Z',
    },
  ],
  total: 3,
  page: 1,
  page_size: 20,
}

// ── MSW server ───────────────────────────────────────────────

const server = setupServer()

beforeEach(() => {
  server.listen({ onUnhandledRequest: 'bypass' })
})

afterEach(() => {
  server.close()
})

// ── Helper: render with QueryClient ──────────────────────────

function renderWithProviders(ui: React.ReactElement) {
  const queryClient = new QueryClient({
    defaultOptions: {
      queries: { retry: false },
    },
  })
  return render(
    <QueryClientProvider client={queryClient}>
      {ui}
    </QueryClientProvider>,
  )
}

// ── Tests ────────────────────────────────────────────────────

describe('ModelServices page', () => {
  it('renders page header', async () => {
    server.use(
      http.get('*/api/v1/providers', () => {
        return HttpResponse.json(mockProviders)
      }),
    )

    renderWithProviders(<ModelServices />)

    expect(screen.getByText('模型服务')).toBeInTheDocument()
    expect(screen.getByText('管理 AI 服务商、模型配置和 Key 池')).toBeInTheDocument()
  })

  it('fetches and displays providers', async () => {
    server.use(
      http.get('*/api/v1/providers', () => {
        return HttpResponse.json(mockProviders)
      }),
    )

    renderWithProviders(<ModelServices />)

    await waitFor(() => {
      expect(screen.getByText('OpenAI')).toBeInTheDocument()
    })

    expect(screen.getByText('Anthropic')).toBeInTheDocument()
    expect(screen.getByText('DeepSeek')).toBeInTheDocument()

    // Provider identifiers rendered as code
    // openai also appears in base_url, so use getAllByText
    expect(screen.getAllByText('openai').length).toBeGreaterThanOrEqual(1)
    expect(screen.getAllByText('anthropic').length).toBeGreaterThanOrEqual(1)
    expect(screen.getAllByText('deepseek').length).toBeGreaterThanOrEqual(1)
  })

  it('shows loading spinner before data arrives', async () => {
    server.use(
      http.get('*/api/v1/providers', async () => {
        await new Promise((resolve) => setTimeout(resolve, 500))
        return HttpResponse.json(mockProviders)
      }),
    )

    renderWithProviders(<ModelServices />)

    const spinner = document.querySelector('.ant-spin')
    expect(spinner).toBeTruthy()

    // Wait for loading to complete so afterEach cleanup is clean
    await waitFor(() => {
      expect(screen.getByText('OpenAI')).toBeInTheDocument()
    })
  })

  it('renders provider status as tag', async () => {
    server.use(
      http.get('*/api/v1/providers', () => {
        return HttpResponse.json(mockProviders)
      }),
    )

    renderWithProviders(<ModelServices />)

    await waitFor(() => {
      expect(screen.getByText('OpenAI')).toBeInTheDocument()
    })

    // enabled: true -> "启用" tag, enabled: false -> "禁用" tag
    const enabledTags = screen.getAllByText('启用')
    expect(enabledTags.length).toBe(2) // openai + deepseek

    expect(screen.getByText('禁用')).toBeInTheDocument() // anthropic
  })

  it('shows empty table on API failure', async () => {
    server.use(
      http.get('*/api/v1/providers', () => {
        return HttpResponse.json(
          { error: 'internal_error', message: '获取服务商列表失败' },
          { status: 500 },
        )
      }),
    )

    renderWithProviders(<ModelServices />)

    // Page header should still render
    expect(screen.getByText('模型服务')).toBeInTheDocument()

    // Provider names should NOT be rendered
    await waitFor(() => {
      expect(screen.queryByText('OpenAI')).not.toBeInTheDocument()
    })
  })
})