import { useQuery } from '@apollo/client/react'
import { memo, useCallback, useEffect, useMemo } from 'react'
import { useSearchParams } from 'react-router-dom'

import {
  GET_PHONES_TABS_STATS_QUERY,
} from '../../../../entities/device/api/device.graphql'
import type {
  GetPhonesTabsStatsData,
  GetPhonesTabsStatsVariables,
} from '../../../../entities/device/model/types'
import {
  PageTabs,
  type PageTabItem,
} from '../../../../shared/ui/PageTabs/PageTabs'

type DevicesTab = 'working' | 'lost' | 'locked' | 'maintenance' | 'service'
type DevicesTabsValue = DevicesTab | 'none'

function getActiveTab(searchParams: URLSearchParams): DevicesTabsValue {
  const locked = searchParams.get('dLocked')
  const needMaintenance = searchParams.get('dNeedMaintenance')
  const networkStatus = searchParams.get('dNetwork')
  const technicalStatus = searchParams.get('dTechnicalStatus')

  if (locked === 'true') return 'locked'
  if (technicalStatus === 'NeedsMaintenance') return 'maintenance'
  if (technicalStatus === 'InService') return 'service'
  if (needMaintenance === 'true') return 'maintenance'
  if (networkStatus === 'Lost') return 'lost'
  if (networkStatus === 'Online') return 'working'

  return 'none'
}

function formatCount(value?: number) {
  if (typeof value !== 'number') return '...'

  return value.toLocaleString('ru-RU')
}

export const DevicesTabs = memo(function DevicesTabs() {
  const [searchParams, setSearchParams] = useSearchParams()
  const activeTab = useMemo(() => getActiveTab(searchParams), [searchParams])

  useEffect(() => {
    const legacyNeedMaintenance = searchParams.get('dNeedMaintenance')

    if (
      searchParams.has('dTechnicalStatus') ||
      (legacyNeedMaintenance !== 'true' && legacyNeedMaintenance !== 'false')
    ) {
      return
    }

    const nextParams = new URLSearchParams(searchParams)

    nextParams.delete('dNeedMaintenance')
    nextParams.set(
      'dTechnicalStatus',
      legacyNeedMaintenance === 'true' ? 'NeedsMaintenance' : 'Healthy',
    )

    setSearchParams(nextParams, { replace: true })
  }, [searchParams, setSearchParams])

  const query = searchParams.get('dQuery')?.trim() || undefined
  const selectedOrganisationIds = useMemo(() => {
    return searchParams.get('dOrgs')?.split(',').filter(Boolean) ?? []
  }, [searchParams])

  const queryVariables = useMemo<GetPhonesTabsStatsVariables>(() => {
    return {
      query,
      orgs:
        selectedOrganisationIds.length > 0
          ? selectedOrganisationIds
          : undefined,
    }
  }, [query, selectedOrganisationIds])

  const { data, previousData } = useQuery<
    GetPhonesTabsStatsData,
    GetPhonesTabsStatsVariables
  >(GET_PHONES_TABS_STATS_QUERY, {
    variables: queryVariables,
    fetchPolicy: 'cache-and-network',
    notifyOnNetworkStatusChange: true,
  })

  const stats = data ?? previousData
  const onlineCount = stats?.onlinePhones.totalElements
  const totalCount = stats?.totalPhones.totalElements
  const lockedCount = stats?.lockedPhones.totalElements
  const lostCount = stats?.lostPhones.totalElements
  const maintenanceCount = stats?.maintenancePhones.totalElements
  const serviceCount = stats?.servicePhones.totalElements

  const tabs = useMemo<Array<PageTabItem<DevicesTabsValue>>>(() => {
    const nextTabs: Array<PageTabItem<DevicesTabsValue>> = [
      {
        value: 'working',
        label: (
          <>
            В сети: <b>{formatCount(onlineCount)} из {formatCount(totalCount)}</b>
          </>
        ),
      },
    ]

    if ((lostCount ?? 0) > 0) {
      nextTabs.push({
        value: 'lost',
        label: (
          <>
            Потеряно: <b>{formatCount(lostCount)}</b>
          </>
        ),
        alert: true,
      })
    }

    if ((lockedCount ?? 0) > 0) {
      nextTabs.push({
        value: 'locked',
        label: (
          <>
            Заблокировано: <b>{formatCount(lockedCount)}</b>
          </>
        ),
        alert: true,
      })
    }

    if ((maintenanceCount ?? 0) > 0) {
      nextTabs.push({
        value: 'maintenance',
        label: (
          <>
            Требуют ТО: <b>{formatCount(maintenanceCount)}</b>
          </>
        ),
        alert: true,
      })
    }

    if ((serviceCount ?? 0) > 0) {
      nextTabs.push({
        value: 'service',
        label: (
          <>
            На обслуживании: <b>{formatCount(serviceCount)}</b>
          </>
        ),
      })
    }

    return nextTabs
  }, [lockedCount, lostCount, maintenanceCount, onlineCount, serviceCount, totalCount])

  const applyQuickFilter = useCallback((tab: DevicesTabsValue) => {
    if (tab === 'none') return

    const nextParams = new URLSearchParams(searchParams)

    nextParams.delete('dPage')

    if (activeTab === tab) {
      nextParams.delete('dLocked')
      nextParams.delete('dNetwork')
      nextParams.delete('dNeedMaintenance')
      nextParams.delete('dTechnicalStatus')
      setSearchParams(nextParams, { replace: true })
      return
    }

    if (tab === 'working') {
      nextParams.set('dNetwork', 'Online')
      nextParams.delete('dLocked')
      nextParams.delete('dNeedMaintenance')
      nextParams.delete('dTechnicalStatus')
    }

    if (tab === 'locked') {
      nextParams.set('dLocked', 'true')
      nextParams.delete('dNetwork')
      nextParams.delete('dNeedMaintenance')
      nextParams.delete('dTechnicalStatus')
    }

    if (tab === 'lost') {
      nextParams.set('dNetwork', 'Lost')
      nextParams.delete('dLocked')
      nextParams.delete('dNeedMaintenance')
      nextParams.delete('dTechnicalStatus')
    }

    if (tab === 'maintenance') {
      nextParams.delete('dLocked')
      nextParams.delete('dNetwork')
      nextParams.delete('dNeedMaintenance')
      nextParams.set('dTechnicalStatus', 'NeedsMaintenance')
    }

    if (tab === 'service') {
      nextParams.delete('dLocked')
      nextParams.delete('dNetwork')
      nextParams.delete('dNeedMaintenance')
      nextParams.set('dTechnicalStatus', 'InService')
    }

    setSearchParams(nextParams, { replace: true })
  }, [activeTab, searchParams, setSearchParams])

  return (
    <PageTabs
      activeValue={activeTab}
      items={tabs}
      onChange={applyQuickFilter}
    />
  )
})