import { test, expect } from '@playwright/test'

// This file runs only via playwright.backend.config.ts; ordinary E2E lock the backend URL.
for (const status of [200, 500]) {
  test(`смена backend: поздний Ping ${status} не меняет новый источник`, async ({ page }) => {
    let release!: () => void
    const pending = new Promise<void>(resolve => { release = resolve })
    const posts: string[] = []
    await page.route('**/health', route => route.fulfill({ json: { ok: true } }))
    await page.route('**/api/**', async route => {
      const request = route.request()
      const url = new URL(request.url())
      const isNew = url.port === '8999'
      if (request.method() === 'POST') {
        posts.push(url.origin + url.pathname)
        if (!isNew && url.pathname === '/api/uptime/probes/collect-group') {
          await pending
          return route.fulfill({ status, json: status === 200 ? {} : { error: 'Ошибка прежнего backend' } })
        }
      }
      const servers = [{ id: 1, name: isNew ? 'Новый источник' : 'Старый источник', host: '192.0.2.1', type: 'exit-node', enabled: true, country: 'RU', site: 'TEST', status: 'online', wanUplinks: [] }]
      const probes = [{ id: 'p1', srcServerId: '1', name: isNew ? 'Новая проверка' : 'Старая проверка', target: '192.0.2.10', filter: 'main', rtt: 10, loss: 0, status: 'up', series: [10], enabled: true }]
      const json = url.pathname === '/api/auth/config' ? { required: false }
        : url.pathname === '/api/servers' ? servers
        : url.pathname === '/api/uptime/overview' ? { probes, resources: [] }
        : url.pathname === '/api/uptime/speed-probes' ? { probes: [] }
        : url.pathname === '/api/uptime/speed-test/runs' ? { runs: [] }
        : url.pathname === '/api/evobgp/settings' ? { enabled: false }
        : {}
      await route.fulfill({ json })
    })
    await page.goto('/uptime?probe=p1')
    const context = page.getByRole('status', { name: 'Проверка по ссылке' })
    await expect(context).toContainText('Старая проверка')
    const started = page.waitForRequest(r => r.url().endsWith('/collect-group'))
    await page.getByRole('button', { name: 'Обновить', exact: true }).click()
    await started
    await page.locator('a[href="/settings"]').first().click()
    const backend = page.getByPlaceholder('http://localhost:8000', { exact: true })
    await backend.fill('http://127.0.0.1:8999')
    await backend.press('Enter')
    await page.goBack()
    await expect(context).toContainText('Новая проверка')
    const response = page.waitForResponse(r => r.url().includes(':8000/') && r.url().endsWith('/collect-group'))
    release()
    await response
    await expect(context).toContainText('Новая проверка')
    await expect(page.getByText('Ошибка прежнего backend', { exact: true })).toHaveCount(0)
    await page.getByRole('button', { name: 'Обновить', exact: true }).click()
    await expect.poll(() => posts).toEqual([
      'http://localhost:8000/api/uptime/probes/collect-group',
      'http://127.0.0.1:8999/api/uptime/probes/collect-group',
    ])
    await expect(page.getByRole('button', { name: 'Новая проба', exact: true })).toBeEnabled()
  })
}