import { createFileRoute } from '@tanstack/react-router'
import { useQueries, useQuery } from '@tanstack/react-query'
import { RefreshCw } from 'lucide-react'
import { useState } from 'react'

import { Button } from '@evobgp/ui/components/button'

import { buildDashboardKpiCards } from '@/components/dashboard/dashboard-kpi-grid'
import { DashboardNetworkHealth } from '@/components/dashboard/dashboard-network-health'
import { DashboardOperationsBreakdown } from '@/components/dashboard/dashboard-operations-breakdown'
import { DashboardQuickLinks } from '@/components/dashboard/dashboard-quick-links'
import { OpsDashboard } from '@/components/reui-kit'
import { chartPanelGridClassName } from '@/lib/ui-surface'
import {
  overviewJobsQueryOptions,
  overviewModulesQueryOptions,
  overviewPeersQueryOptions,
  overviewSpeakersQueryOptions,
} from '@/queries/overview'
import { settingsQueryOptions } from '@/queries/settings'

export const Route = createFileRoute('/_auth/dashboard')({
  component: DashboardComponent,
})

function parseShowQuickActions(value: unknown): boolean {
  if (value === false || value === 0 || value === 'false' || value === '0') return false
  return true
}

/**
 * Dashboard — KPI infographic + Quick Actions + charts (no list duplicates).
 * @see https://reui.io/preview/base/dashboard-1
 * @see https://reui.io/preview/base/stats-12
 * @see https://reui.io/preview/base/stats-4
 * @see https://reui.io/preview/base/card-12
 * @see https://reui.io/preview/base/chart-27
 */
function DashboardComponent() {
  const [lastUpdated, setLastUpdated] = useState<Date | null>(null)
  const settingsQ = useQuery(settingsQueryOptions())
  const showQuickActions = parseShowQuickActions(settingsQ.data?.ui_show_quick_actions)

  const results = useQueries({
    queries: [
      overviewModulesQueryOptions(),
      overviewPeersQueryOptions(),
      overviewSpeakersQueryOptions(),
      overviewJobsQueryOptions(),
    ],
  })

  const [modulesQ, peersQ, speakersQ, jobsQ] = results
  const initialLoading =
    modulesQ.isLoading || peersQ.isLoading || speakersQ.isLoading || jobsQ.isLoading
  const refreshing = results.some((r) => r.isFetching && !r.isLoading)

  if (!lastUpdated && !initialLoading && results.every((r) => r.isSuccess || r.isError)) {
    setTimeout(() => setLastUpdated(new Date()), 0)
  }

  function refetchAll() {
    setLastUpdated(null)
    results.forEach((r) => r.refetch())
  }

  const modules = modulesQ.data?.items ?? []
  const peers = peersQ.data?.items ?? []
  const speakers = speakersQ.data?.items ?? []
  const jobs = jobsQ.data?.items ?? []
  const kpiCards = buildDashboardKpiCards({ modules, peers, speakers, jobs })

  return (
    <OpsDashboard
      title="Обзор"
      description={
        lastUpdated
          ? `Состояние панели управления EvoBGP. Обновлено: ${lastUpdated.toLocaleTimeString('ru-RU')}`
          : 'Состояние панели управления EvoBGP.'
      }
      headerActions={
        <Button variant="outline" size="sm" onClick={refetchAll} disabled={refreshing}>
          <RefreshCw className={refreshing ? 'animate-spin' : ''} />
          Обновить
        </Button>
      }
      kpiCards={kpiCards}
      isLoading={initialLoading}
      afterKpi={showQuickActions ? <DashboardQuickLinks /> : null}
      charts={
        <div className={chartPanelGridClassName}>
          <DashboardNetworkHealth
            peers={peers}
            speakers={speakers}
            jobs={jobs}
            loading={refreshing && peers.length === 0 && speakers.length === 0}
          />
          <DashboardOperationsBreakdown
            jobs={jobs}
            modules={modules}
            loading={refreshing && jobs.length === 0 && modules.length === 0}
          />
        </div>
      }
    />
  )
}