import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import { render, screen, waitFor } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import { MemoryRouter } from 'react-router-dom'
import { describe, expect, it, vi } from 'vitest'
import type { Task, TaskListResponse } from './api/client'
import App from './App'

const task: Task = {
  id: 'echo_task',
  name: 'Echo task',
  cron: '0 0 2 * * *',
  timezone: 'Asia/Shanghai',
  enabled: true,
  timeout_secs: 300,
  concurrency_policy: 'skip',
  retry_policy: {
    max_attempts: 0,
    delay_secs: 0,
  },
  action: {
    type: 'script',
    working_dir: 'D:\\Projects\\echo',
    interpreter: 'python.exe',
    script: 'main.py',
    args: [],
    env: {},
  },
  created_at: '2026-10-18T10:00:00Z',
  updated_at: '2026-10-18T10:00:00Z',
}

const taskList: TaskListResponse = {
  items: [task],
  page: 1,
  page_size: 20,
  total: 1,
}

function jsonResponse(body: unknown, status = 200): Response {
  return new Response(JSON.stringify(body), {
    status,
    headers: { 'Content-Type': 'application/json' },
  })
}

function createFetchMock() {
  return vi.fn(
    async (input: RequestInfo | URL, init?: RequestInit): Promise<Response> => {
      const url =
        typeof input === 'string'
          ? input
          : input instanceof URL
            ? input.toString()
            : input.url

      if (url.endsWith('/api/v1/health')) {
        return jsonResponse({
          status: 'ok',
          service: 'task-pilot-backend',
          version: '0.1.0',
        })
      }
      if (url.endsWith('/api/v1/session')) {
        return jsonResponse({ token: 'test-token' })
      }
      if (url.endsWith('/api/v1/cron/preview')) {
        return jsonResponse({
          timezone: 'Asia/Shanghai',
          runs: [
            '2026-10-19 02:00:00',
            '2026-10-20 02:00:00',
          ],
        })
      }
      if (url.includes('/api/v1/tasks') && init?.method === 'POST') {
        return jsonResponse(
          {
            ...task,
            ...JSON.parse(String(init.body)),
          },
          201,
        )
      }
      if (url.includes('/api/v1/tasks')) {
        return jsonResponse(taskList)
      }
      return jsonResponse({ code: 'NOT_FOUND', message: 'not found', details: {} }, 404)
    },
  )
}

function renderApp() {
  const queryClient = new QueryClient({
    defaultOptions: {
      queries: {
        retry: false,
      },
    },
  })

  return render(
    <QueryClientProvider client={queryClient}>
      <MemoryRouter>
        <App />
      </MemoryRouter>
    </QueryClientProvider>,
  )
}

describe('TaskDashboard', () => {
  it('renders tasks returned by the Rust API', async () => {
    vi.stubGlobal('fetch', createFetchMock())
    renderApp()

    expect(await screen.findByText('Echo task')).toBeInTheDocument()
    expect(screen.getByText('echo_task')).toBeInTheDocument()
    expect(screen.getByText('0 0 2 * * *')).toBeInTheDocument()
    expect(await screen.findByText('在线')).toBeInTheDocument()
  })

  it('creates a script task with the visible form values', async () => {
    const fetchMock = createFetchMock()
    vi.stubGlobal('fetch', fetchMock)
    const user = userEvent.setup()
    renderApp()

    await user.click(screen.getByRole('button', { name: '+ 新建任务' }))
    await user.click(screen.getByRole('button', { name: '+ 添加参数' }))
    expect(
      screen.getByPlaceholderText('参数名 (如 --mode 或 -v)'),
    ).toBeInTheDocument()
    expect(
      screen.getByPlaceholderText('参数值 (可选，无值可留空)'),
    ).toBeInTheDocument()
    await user.clear(screen.getByLabelText(/任务标识/))
    await user.type(screen.getByLabelText(/任务标识/), 'new_task')
    await user.type(screen.getByLabelText('名称'), 'New task')
    await user.type(screen.getByLabelText('工作目录'), 'D:\\Projects\\new')

    await user.click(
      screen.getByRole('button', { name: '保存并热刷新' }),
    )

    await waitFor(() => {
      const createCall = fetchMock.mock.calls.find(
        ([input, init]) =>
          String(input).endsWith('/api/v1/tasks') && init?.method === 'POST',
      )
      expect(createCall).toBeDefined()
    })

    const createCall = fetchMock.mock.calls.find(
      ([input, init]) =>
        String(input).endsWith('/api/v1/tasks') && init?.method === 'POST',
    )
    const payload = JSON.parse(String(createCall?.[1]?.body))
    expect(payload.id).toBe('new_task')
    expect(payload.name).toBe('New task')
    expect(payload.action.type).toBe('script')
    expect(payload.action.working_dir).toBe('D:\\Projects\\new')
  })
})