"use client"

import { useState, useMemo, useEffect, type ReactNode } from "react"
import { Alert, AlertTitle, AlertDescription } from "@/components/reui/alert"
import { projectTrafficObservations, type TrafficObservationMeta } from "@/lib/traffic-observations"
import { projectTrafficBindingStatus } from "@/lib/traffic-binding-status"
import { TrafficObservationStatus } from "@/components/traffic/traffic-observation-status"
import { TrafficDataTime } from "@/components/traffic/traffic-data-time"
import { PageHeader } from "@/components/page-header"
import { Frame, FramePanel } from "@/components/reui/frame"
import { KpiStatGrid } from "@/components/reui-kit/kpi-stat-grid"
import { TrafficMiniChart } from "@/components/reui-kit/traffic-mini-chart"
import { TrafficRxTxChart } from "@/components/reui-kit/traffic-rx-tx-chart"
import { Button } from "@/components/ui/button"
import { Sparkline } from "@/components/sparkline"
import { StatusDot } from "@/components/status-dot"
import { Flag } from "@/components/flag"
import {
  RefreshCwIcon, TrendingUpIcon, TrendingDownIcon,
  ArrowUpIcon, ArrowDownIcon, ActivityIcon, UsersIcon, CableIcon, ServerIcon, SearchIcon, GitBranchIcon, PlusIcon,
} from "lucide-react"
import { cn } from "@/lib/utils"
import { fmtGiB, fmtRate } from "@/lib/fmt-rate"
import { useDataSource } from "@/lib/data-source"
import { useTrafficLive } from "@/hooks/use-traffic-live"
import { useFlowLive } from "@/hooks/use-flow-live"
import { requestJson } from "@/shared/api/http-client"
import { getFlowAnalytics, getFlowClients, getFlowExporters, getFlowMonthly, getTrafficFlows } from "@/shared/api/traffic-flow"
import { listServers } from "@/shared/api/servers"
import { FlowOverlaySheet } from "@/components/traffic/flow-overlay-sheet"
import { FlowAnalyticsDetail, FlowEntityCardView } from "@/components/traffic/flow-analytics-panel"
import type { FlowAnalyticsDto, FlowEntityCard, FlowMonthlyDto, FlowStatsDto } from "@mmapp/contracts/traffic-flow"
import type { ServerRead } from "@mmapp/contracts/servers"
import { Badge } from "@/components/reui/badge"
import {
  IFACE_TYPE_LABEL,
  INIT_USERS,
  ROLE_LABEL,
  type InterfaceType,
} from "@/lib/users"
import { TYPE_VARIANT } from "@/components/data-grids/users-expanded-detail"

// ─── helpers ──────────────────────────────────────────────────────────────────

function seededRand(seed: number) {
  let s = seed
  return () => { s = (s * 9301 + 49297) % 233280; return s / 233280 }
}

function buildSeries(seed: number, base: number, range: number, n = 60): number[] {
  const rand = seededRand(seed)
  return Array.from({ length: n }, () => Math.max(0, Math.round(base + (rand() - 0.5) * range * 2)))
}

function addSeries(a: number[], b: number[]): number[] {
  return a.map((v, i) => v + (b[i] ?? 0))
}

function flowIngestLine(stats: FlowStatsDto | null): string | null {
  if (!stats) return null
  const listener = stats.listenerBound
    ? (stats.listenerAddress ?? "слушает")
    : "не слушает"
  const last = stats.lastDatagramAt
    ? new Date(stats.lastDatagramAt).toLocaleString("ru-RU")
    : "—"
  const exporter = stats.lastExporterIp ? ` · ${stats.lastExporterIp}` : ""
  const err = stats.lastError ? ` · ${stats.lastError}` : ""
  return `Коллектор: ${listener} · пакеты ${stats.packetsReceived ?? 0} · последний ${last}${exporter}${err}`
}

function flowEmptyHint(stats: FlowStatsDto | null, collectorAlive?: boolean): string | undefined {
  if (!stats) return undefined
  if (stats.lastError) return stats.lastError
  if (stats.packetsReceived) {
    return `IPFIX приходит (${stats.lastExporterIp ?? "экспортёр"}), но сессии ещё не записаны.`
  }
  if (stats.listenerBound === false && !collectorAlive) {
    return "Коллектор UDP не слушает. Подключите JH ещё раз — ingest включится автоматически."
  }
  if (stats.listenerBound || collectorAlive) {
    return "Коллектор жив, IPFIX ещё не доходит. На jump-host у target Src должен быть 0.0.0.0 (авто)."
  }
  return "IPFIX ещё не доходит до коллектора. На jump-host у target Src должен быть 0.0.0.0 (авто). На хосте MM проверьте bind 10.255.254.1:4739 после wg-flow."
}

// ─── data model ───────────────────────────────────────────────────────────────

interface BoundIfaceTraffic {
  statusObservedAt?: string|null
  statusExpiresAt?: string|null
  volumeUnit?: "GiB"
  observations?: TrafficObservationMeta
  id: string
  bindingId: string
  userId: string
  userLogin: string
  userName: string
  interfaceName: string
  interfaceType: InterfaceType
  peerPublicKey?: string
  peerName?: string
  comment: string
  serverId: string
  serverName: string
  serverSite: string
  serverCountry: string
  rxNow: number | null
  txNow: number | null
  rxPeak: number | null
  txPeak: number | null
  rxTotal: number | null
  txTotal: number | null
  rxSeries: (number|null)[]
  txSeries: (number|null)[]
  status: "online" | "offline" | "unknown"
}

interface ServerTraffic {
  volumeUnit?: "GiB"
  observations?: TrafficObservationMeta
  id: string
  name: string
  site: string
  country: string
  status: "online" | "offline" | "degraded"
  rxNow: number | null
  txNow: number | null
  rxPeak: number | null
  txPeak: number | null
  rxTotal: number | null
  txTotal: number | null
  sessions: number
  rxSeries: (number|null)[]
  txSeries: (number|null)[]
  boundIfaces: BoundIfaceTraffic[]
}

interface UserTraffic {
  volumeUnit?: "GiB"
  observations?: TrafficObservationMeta
  id: string
  login: string
  displayName: string
  role: string
  active?: boolean
  interfaces: BoundIfaceTraffic[]
  rxNow: number | null
  txNow: number | null
  rxPeak: number | null
  txPeak: number | null
  rxTotal: number | null
  txTotal: number | null
  rxSeries: (number|null)[]
  txSeries: (number|null)[]
}

interface LiveTrafficServer {
  volumeUnit?: "GiB"
  observations?: TrafficObservationMeta
  id: string
  name: string
  site: string
  country: string
  status: "online" | "offline" | "degraded"
  rxNow: number | null
  txNow: number | null
  rxPeak: number | null
  txPeak: number | null
  rxTotal: number | null
  txTotal: number | null
  sessions: number
  rxSeries: (number|null)[]
  txSeries: (number|null)[]
}

interface LiveTrafficInterface {
  observations?: TrafficObservationMeta
  name: string
  running: boolean
  disabled: boolean
  rxNow: number | null
  txNow: number | null
}

function makeApiFetch(backendUrl: string) {
  return async function apiFetch<T>(path: string, init?: RequestInit): Promise<T> {
    return requestJson<T>(backendUrl, path, init)
  }
}

function compareRates(a: number|null, b: number|null, direction: "asc"|"desc") {
  if (a === null && b === null) return 0
  if (a === null) return direction === "desc" ? -1 : 1
  if (b === null) return direction === "desc" ? 1 : -1
  return a - b
}

function hashSeed(s: string): number {
  let h = 0
  for (let i = 0; i < s.length; i++) h = (h * 31 + s.charCodeAt(i)) | 0
  return Math.abs(h)
}

function boundIfaceLabel(c: Pick<BoundIfaceTraffic, "interfaceName" | "interfaceType" | "peerName">): string {
  if (c.interfaceType === "wg" && c.peerName) return `${c.peerName} · ${c.interfaceName}`
  return c.interfaceName
}

function mockBoundFromUsers(): BoundIfaceTraffic[] {
  return INIT_USERS.flatMap((u) =>
    u.bindings.map((b) => {
      const seed = hashSeed(b.id)
      const offline = !u.active || b.interfaceName.includes("retail") || b.interfaceName.includes("warehouse")
      const rxNow = offline ? 0 : 12 + (seed % 140)
      const txNow = offline ? 0 : 8 + (seed % 110)
      return {
        id: `${b.userId}:${b.serverId}:${b.interfaceName}:${b.peerPublicKey ?? "_iface"}`,
        bindingId: b.id,
        userId: u.id,
        userLogin: u.login,
        userName: u.name,
        interfaceName: b.interfaceName,
        interfaceType: b.interfaceType,
        peerPublicKey: b.peerPublicKey,
        peerName: b.peerName,
        comment: b.comment,
        serverId: b.serverId,
        serverName: b.serverName,
        serverSite: b.serverSite,
        serverCountry: b.serverCountry,
        rxNow,
        txNow,
        rxPeak: rxNow + 40,
        txPeak: txNow + 28,
        rxTotal: offline ? 0 : +(rxNow / 8).toFixed(1),
        txTotal: offline ? 0 : +(txNow / 10).toFixed(1),
        rxSeries: offline ? Array(60).fill(0) : buildSeries(seed, rxNow, Math.max(4, rxNow / 4)),
        txSeries: offline ? Array(60).fill(0) : buildSeries(seed + 17, txNow, Math.max(3, txNow / 4)),
        status: (offline ? "offline" : "online") as "online" | "offline",
      }
    }),
  )
}

const boundIfaces: BoundIfaceTraffic[] = mockBoundFromUsers()

// ─── mock server data (with bound interfaces attached) ────────────────────────

const serverTraffic: ServerTraffic[] = [
  {
    id: "srv1", name: "mt-msk-core-01", site: "MSK", country: "RU", status: "online",
    rxNow: 342, txNow: 287, rxPeak: 614, txPeak: 521, rxTotal: 124.8, txTotal: 98.2, sessions: 4,
    rxSeries: buildSeries(101, 342, 80), txSeries: buildSeries(201, 287, 70),
    boundIfaces: boundIfaces.filter((c) => c.serverId === "srv1"),
  },
  {
    id: "srv2", name: "mt-spb-edge-01", site: "SPB", country: "RU", status: "online",
    rxNow: 218, txNow: 164, rxPeak: 412, txPeak: 310, rxTotal: 78.4, txTotal: 61.1, sessions: 6,
    rxSeries: buildSeries(102, 218, 60), txSeries: buildSeries(202, 164, 50),
    boundIfaces: [],
  },
  {
    id: "srv3", name: "mt-fra-edge-01", site: "FRA", country: "DE", status: "online",
    rxNow: 184, txNow: 141, rxPeak: 388, txPeak: 282, rxTotal: 66.2, txTotal: 51.4, sessions: 3,
    rxSeries: buildSeries(103, 184, 55), txSeries: buildSeries(203, 141, 45),
    boundIfaces: [],
  },
  {
    id: "srv4", name: "mt-ams-edge-01", site: "AMS", country: "NL", status: "degraded",
    rxNow: 88, txNow: 61, rxPeak: 244, txPeak: 188, rxTotal: 32.1, txTotal: 24.8, sessions: 2,
    rxSeries: buildSeries(104, 88, 40), txSeries: buildSeries(204, 61, 30),
    boundIfaces: [],
  },
  {
    id: "srv5", name: "mt-sgp-edge-01", site: "SGP", country: "SG", status: "offline",
    rxNow: 0, txNow: 0, rxPeak: 0, txPeak: 0, rxTotal: 0, txTotal: 0, sessions: 0,
    rxSeries: Array(60).fill(0), txSeries: Array(60).fill(0),
    boundIfaces: [],
  },
  {
    id: "srv6", name: "mt-ams-test-01", site: "AMS", country: "NL", status: "online",
    rxNow: 42, txNow: 28, rxPeak: 118, txPeak: 84, rxTotal: 14.2, txTotal: 9.8, sessions: 1,
    rxSeries: buildSeries(105, 42, 20), txSeries: buildSeries(205, 28, 14),
    boundIfaces: [],
  },
  {
    id: "srv7", name: "mt-msk-lab-01", site: "MSK", country: "RU", status: "online",
    rxNow: 12, txNow: 8, rxPeak: 44, txPeak: 31, rxTotal: 4.2, txTotal: 2.9, sessions: 2,
    rxSeries: buildSeries(106, 12, 6), txSeries: buildSeries(206, 8, 4),
    boundIfaces: boundIfaces.filter(c => c.serverId === "srv7"),
  },
]

// ─── user traffic (aggregated from bound interfaces) ──────────────────────────

function buildUserTraffic(
  id: string, login: string, displayName: string, role: string,
  clients: BoundIfaceTraffic[],
  active = true,
): UserTraffic {
  const rxNow   = clients.reduce((a, c) => a + (c.rxNow ?? 0),   0)
  const txNow   = clients.reduce((a, c) => a + (c.txNow ?? 0),   0)
  const rxPeak  = clients.reduce((a, c) => a + (c.rxPeak ?? 0),  0)
  const txPeak  = clients.reduce((a, c) => a + (c.txPeak ?? 0),  0)
  const rxTotal = clients.reduce((a, c) => a + (c.rxTotal ?? 0), 0)
  const txTotal = clients.reduce((a, c) => a + (c.txTotal ?? 0), 0)
  const rxSeries = clients.reduce((a, c) => addSeries(a, c.rxSeries.map(v => v ?? 0)), Array(60).fill(0) as number[])
  const txSeries = clients.reduce((a, c) => addSeries(a, c.txSeries.map(v => v ?? 0)), Array(60).fill(0) as number[])
  return { id, login, displayName, role, active, interfaces: clients, rxNow, txNow, rxPeak, txPeak, rxTotal, txTotal, rxSeries, txSeries }
}

const userTraffic: UserTraffic[] = INIT_USERS.map((u) =>
  buildUserTraffic(
    u.id,
    u.login,
    u.name,
    ROLE_LABEL[u.role],
    boundIfaces.filter((c) => c.userId === u.id),
    u.active,
  ),
)

// ─── types ────────────────────────────────────────────────────────────────────

/** Ключи совпадают с `rangeToMinutes` в API (`/api/traffic/...`). */
const TRAFFIC_RANGE_KEYS = ["5m", "15m", "1h", "4h", "24h"] as const
type Range = (typeof TRAFFIC_RANGE_KEYS)[number] | "30d"

const TRAFFIC_RANGE_LABELS: Record<(typeof TRAFFIC_RANGE_KEYS)[number], string> = {
  "5m": "5м",
  "15m": "15м",
  "1h": "1ч",
  "4h": "4ч",
  "24h": "24ч",
}

type GroupMode = "servers" | "users" | "ifaces" | "flows"
type FlowScope = "servers" | "users"
type SortField = "rx" | "tx" | "name" | "sessions"
type SortDir   = "asc" | "desc"

// ─── shared sub-components ────────────────────────────────────────────────────

function StatChip({ icon, label, value }: { icon: ReactNode; label: string; value: string }) {
  return (
    <div className="flex items-center gap-2">
      <div className="flex items-center justify-center size-7 rounded-md bg-muted shrink-0">{icon}</div>
      <div className="leading-tight min-w-0 break-words">
        <p className="text-xs text-muted-foreground">{label}</p>
        <p className="text-sm font-semibold tabular-nums">{value}</p>
      </div>
    </div>
  )
}


// ─── left-panel entity cards ──────────────────────────────────────────────────

function ServerCard({ s, selected, onClick }: { s: ServerTraffic; selected: boolean; onClick: () => void }) {
  return (
    <button type="button" aria-pressed={selected} onClick={onClick} className={cn(
      "text-left w-full rounded-lg border p-3 transition-colors hover:bg-muted/50",
      selected ? "border-primary bg-primary/5" : "border-border bg-card",
      s.status === "offline" && "opacity-60",
    )}>
      <div className="flex items-center justify-between gap-2 mb-2">
        <div className="flex items-center gap-1.5 min-w-0">
          <StatusDot status={s.status} />
          <span className="text-xs font-medium truncate">{s.name}</span>
        </div>
        <span className="text-[10px] font-mono text-muted-foreground shrink-0 flex items-center gap-1">
          <Flag code={s.country} />{s.site}
        </span>
      </div>
      <TrafficMiniChart rx={s.rxSeries} tx={s.txSeries} />
      <div className="flex justify-between mt-2 gap-2">
        <div className="flex items-center gap-1 text-[11px]">
          <ArrowDownIcon className="size-3 text-emerald-500" />
          <span className="font-mono font-medium text-foreground">{fmtRate(s.rxNow)}</span>
        </div>
        <div className="flex items-center gap-1 text-[11px]">
          <ArrowUpIcon className="size-3 text-blue-500" />
          <span className="font-mono font-medium text-foreground">{fmtRate(s.txNow)}</span>
        </div>
        {s.boundIfaces.length > 0 && (
          <div className="flex items-center gap-0.5 text-[10px] text-muted-foreground">
            <CableIcon className="size-3" />{s.boundIfaces.length}
          </div>
        )}
      </div>
    </button>
  )
}

function UserCard({ u, selected, onClick }: { u: UserTraffic; selected: boolean; onClick: () => void }) {
  const hasClients = u.interfaces.length > 0
  return (
    <button type="button" aria-pressed={selected} onClick={onClick} className={cn(
      "text-left w-full rounded-lg border p-3 transition-colors hover:bg-muted/50",
      selected ? "border-primary bg-primary/5" : "border-border bg-card",
      !hasClients && "opacity-60",
    )}>
      <div className="flex items-center justify-between gap-2 mb-2">
        <div className="flex items-center gap-1.5 min-w-0">
          <div className="size-5 rounded-full bg-muted flex items-center justify-center shrink-0">
            <UsersIcon className="size-3 text-muted-foreground" />
          </div>
          <div className="min-w-0">
            <p className="text-xs font-medium truncate">{u.login}</p>
            <p className="text-[10px] text-muted-foreground truncate">{u.displayName}</p>
          </div>
        </div>
        <div className="flex items-center gap-0.5 text-[10px] text-muted-foreground shrink-0">
          <CableIcon className="size-3" />{u.interfaces.length}
        </div>
      </div>
      {hasClients ? (
        <>
          <TrafficMiniChart rx={u.rxSeries} tx={u.txSeries} />
          <div className="flex justify-between mt-2 gap-2">
            <div className="flex items-center gap-1 text-[11px]">
              <ArrowDownIcon className="size-3 text-emerald-500" />
              <span className="font-mono font-medium text-foreground">{fmtRate(u.rxNow)}</span>
            </div>
            <div className="flex items-center gap-1 text-[11px]">
              <ArrowUpIcon className="size-3 text-blue-500" />
              <span className="font-mono font-medium text-foreground">{fmtRate(u.txNow)}</span>
            </div>
          </div>
        </>
      ) : (
        <p className="text-[10px] text-muted-foreground">Нет привязанных интерфейсов</p>
      )}
    </button>
  )
}

function IfaceCard({ c, selected, onClick }: { c: BoundIfaceTraffic; selected: boolean; onClick: () => void }) {
  return (
    <button type="button" aria-pressed={selected} onClick={onClick} className={cn(
      "text-left w-full rounded-lg border p-3 transition-colors hover:bg-muted/50",
      selected ? "border-primary bg-primary/5" : "border-border bg-card",
      c.status === "offline" && "opacity-60",
    )}>
      <div className="flex items-center justify-between gap-2 mb-2">
        <div className="flex items-center gap-1.5 min-w-0">
          <StatusDot status={c.status} />
          <div className="min-w-0">
            <p className="text-xs font-mono font-medium truncate">{boundIfaceLabel(c)}</p>
            <p className="text-[10px] text-muted-foreground truncate">{c.userLogin}</p>
          </div>
        </div>
        <span className="text-[10px] font-mono text-muted-foreground shrink-0 flex items-center gap-1">
          <Flag code={c.serverCountry} />{c.serverSite}
        </span>
      </div>
      <TrafficMiniChart rx={c.rxSeries} tx={c.txSeries} />
      <div className="flex justify-between mt-2 gap-2">
        <div className="flex items-center gap-1 text-[11px]">
          <ArrowDownIcon className="size-3 text-emerald-500" />
          <span className="font-mono font-medium text-foreground">{fmtRate(c.rxNow)}</span>
        </div>
        <div className="flex items-center gap-1 text-[11px]">
          <ArrowUpIcon className="size-3 text-blue-500" />
          <span className="font-mono font-medium text-foreground">{fmtRate(c.txNow)}</span>
        </div>
      </div>
    </button>
  )
}

// ─── GRE client row (replaces bulky grid tables) ─────────────────────────────

/**
 * Compact single-row card for a GRE client.
 * showServer=true adds a server chip (used in user-detail where server is not implied).
 */
function IfaceRow({ c, showServer = false }: { c: BoundIfaceTraffic; showServer?: boolean }) {
  return (
    <div className={cn(
      "flex flex-wrap items-center gap-3 px-3 py-2.5 rounded-lg border bg-card hover:bg-muted/30 transition-colors",
      c.status === "offline" && "opacity-55",
    )}>
      <StatusDot status={c.status} />
      <div className="min-w-0 basis-full sm:basis-0 sm:flex-1">
        <div className="flex items-center gap-2 flex-wrap">
          <span className="text-xs font-mono font-semibold break-all">{boundIfaceLabel(c)}</span>
          <Badge variant={TYPE_VARIANT[c.interfaceType]} size="sm">{IFACE_TYPE_LABEL[c.interfaceType]}</Badge>
          {showServer && (
            <span className="inline-flex items-center gap-1 text-[10px] font-mono text-muted-foreground bg-muted px-1.5 py-0.5 rounded">
              <Flag code={c.serverCountry} />{c.serverSite}
            </span>
          )}
        </div>
        <p className="text-[10px] text-muted-foreground truncate mt-0.5">{c.comment || c.userLogin}</p>
      </div>
      <div className="shrink-0 text-right leading-tight">
        <div className="flex items-center gap-1 justify-end text-xs font-mono font-medium text-emerald-600 dark:text-emerald-400">
          <ArrowDownIcon className="size-3" />{fmtRate(c.rxNow)}
        </div>
        <div className="flex items-center gap-1 justify-end text-xs font-mono font-medium text-blue-600 dark:text-blue-400">
          <ArrowUpIcon className="size-3" />{fmtRate(c.txNow)}
        </div>
      </div>
      <div className="shrink-0 text-right leading-tight text-[10px] text-muted-foreground w-[72px]">
        <p className="tabular-nums">{fmtGiB(c.rxTotal)}</p>
        <p className="tabular-nums">{fmtGiB(c.txTotal)}</p>
      </div>
      <span className={cn(
        "shrink-0 text-[10px] px-1.5 py-0.5 rounded-full font-medium tabular-nums",
        c.status === "online" ? "bg-success/10 text-success" : "bg-muted text-muted-foreground",
      )}>
        {c.status === "online" ? "Работает" : c.status === "unknown" ? "Нет данных" : "Неактивен"}
      </span>
    </div>
  )
}

function BoundIfacesList({ clients, showServer = false }: { clients: BoundIfaceTraffic[]; showServer?: boolean }) {
  if (clients.length === 0)
    return <p className="text-xs text-muted-foreground py-1">Нет привязанных интерфейсов</p>
  return (
    <div className="flex flex-col gap-1.5">
      {clients.map((c) => <IfaceRow key={c.id} c={c} showServer={showServer} />)}
    </div>
  )
}

// ─── detail panel helpers ─────────────────────────────────────────────────────

function DetailHeader({ range, setRange, children }: {
  range: Range; setRange: (r: Range) => void; children: ReactNode
}) {
  return (
    <div className="flex flex-wrap items-start justify-between mb-3 gap-3">
      <div className="flex items-center gap-2 flex-wrap min-w-0">{children}</div>
      <div className="flex flex-wrap gap-1">
        {TRAFFIC_RANGE_KEYS.map((r) => (
          <Button key={r} type="button" aria-pressed={range === r} size="sm" variant={r === range ? "default" : "ghost"}
            className="h-7 px-2 text-xs" onClick={() => setRange(r)}>
            {TRAFFIC_RANGE_LABELS[r]}
          </Button>
        ))}
      </div>
    </div>
  )
}

function OfflinePlaceholder({ text = "Нет данных — объект недоступен" }: { text?: string }) {
  return (
    <div className="flex items-center justify-center h-[220px] text-muted-foreground/40">
      <div className="text-center">
        <ActivityIcon className="size-10 mx-auto mb-2 opacity-40" />
        <p className="text-sm">{text}</p>
      </div>
    </div>
  )
}

function TotalsRow({ rxTotal, txTotal, rxSeries, txSeries }: {
  rxTotal: number|null; txTotal: number|null; rxSeries: (number|null)[]; txSeries: (number|null)[]
}) {
  return (
    <div role="group" aria-label="Учтённый объём по измерениям" className="mt-4 pt-4 border-t grid grid-cols-2 gap-4 [&>div]:min-w-0 [&_svg]:max-w-full">
      <div>
        <p className="text-xs text-muted-foreground mb-1">Учтено RX по замерам</p>
        <p className="text-lg font-semibold tabular-nums">
          {fmtGiB(rxTotal)}
        </p>
        <Sparkline data={rxSeries} width={180} height={28} color="var(--chart-rx)" filled />
      </div>
      <div>
        <p className="text-xs text-muted-foreground mb-1">Учтено TX по замерам</p>
        <p className="text-lg font-semibold tabular-nums">
          {fmtGiB(txTotal)}
        </p>
        <Sparkline data={txSeries} width={180} height={28} color="var(--chart-tx)" filled />
      </div>
    </div>
  )
}

// ─── detail panels ────────────────────────────────────────────────────────────

function ServerDetail({
  sel, range, setRange, liveRx, liveTx, liveHint,
}: {
  sel: ServerTraffic
  range: Range
  setRange: (r: Range) => void
  liveRx?: number
  liveTx?: number
  liveHint?: string
}) {
  const rxNow = liveRx ?? sel.rxNow
  const txNow = liveTx ?? sel.txNow
  return (
    <>
      <DetailHeader range={range} setRange={setRange}>
        <StatusDot status={sel.status} />
        <h2 className="text-base font-semibold break-all">{sel.name}</h2>
        <span className="text-xs font-mono bg-muted px-1.5 py-0.5 rounded flex items-center gap-1">
          <Flag code={sel.country} />{sel.site}
        </span>
      </DetailHeader>
      <TrafficObservationStatus observations={sel.observations} unknown={sel.rxNow == null || sel.txNow == null} />
      <TrafficRxTxChart rx={sel.rxSeries} tx={sel.txSeries} range={range} />
      <div className="mt-4 pt-4 border-t">
        <KpiStatGrid
          aria-label="Скорость выбранного сервера"
          items={[
            {
              id: "rx-now",
              label: "RX",
              value: fmtRate(rxNow),
              hint: liveHint,
              icon: <ArrowDownIcon className="size-4" />,
              iconClassName: "text-success",
            },
            {
              id: "tx-now",
              label: "TX",
              value: fmtRate(txNow),
              hint: liveHint,
              icon: <ArrowUpIcon className="size-4" />,
              iconClassName: "text-info",
            },
            {
              id: "rx-peak",
              label: "Пик RX",
              value: fmtRate(sel.rxPeak),
              icon: <TrendingUpIcon className="size-4" />,
              iconClassName: "text-warning",
            },
            {
              id: "tx-peak",
              label: "Пик TX",
              value: fmtRate(sel.txPeak),
              icon: <TrendingDownIcon className="size-4" />,
              iconClassName: "text-warning",
            },
          ]}
        />
      </div>
      <TotalsRow rxTotal={sel.rxTotal} txTotal={sel.txTotal} rxSeries={sel.rxSeries} txSeries={sel.txSeries} />
      {sel.boundIfaces.length > 0 && (
        <div className="mt-4 pt-4 border-t">
          <h3 className="text-sm font-semibold mb-2 flex items-center gap-2">
            <CableIcon className="size-4 text-muted-foreground" />
            Привязанные интерфейсы
            <span className="text-xs text-muted-foreground font-normal">({sel.boundIfaces.length})</span>
          </h3>
          <BoundIfacesList clients={sel.boundIfaces} />
        </div>
      )}
    </>
  )
}

function UserDetail({ sel, range, setRange }: { sel: UserTraffic; range: Range; setRange: (r: Range) => void }) {
  const hasClients = sel.interfaces.length > 0
  return (
    <>
      <DetailHeader range={range} setRange={setRange}>
        <div className="size-7 rounded-full bg-muted flex items-center justify-center shrink-0">
          <UsersIcon className="size-4 text-muted-foreground" />
        </div>
        <div className="leading-tight">
          <h2 className="text-base font-semibold break-all">{sel.login}</h2>
          <p className="text-xs text-muted-foreground break-all">{sel.displayName} · {sel.role}</p>
        </div>
      </DetailHeader>
      {!hasClients ? (
        <OfflinePlaceholder text="Нет привязанных интерфейсов у этого пользователя" />
      ) : (
        <>
          <TrafficRxTxChart rx={sel.rxSeries} tx={sel.txSeries} range={range} />
          <div className="grid grid-cols-2 sm:grid-cols-4 gap-4 mt-4 pt-4 border-t">
            <StatChip icon={<ArrowDownIcon  className="size-3.5 text-emerald-500" />} label="RX"    value={fmtRate(sel.rxNow)} />
            <StatChip icon={<ArrowUpIcon    className="size-3.5 text-blue-500"    />} label="TX"    value={fmtRate(sel.txNow)} />
            <StatChip icon={<TrendingUpIcon className="size-3.5 text-amber-500"   />} label="Пик RX"       value={fmtRate(sel.rxPeak)} />
            <StatChip icon={<CableIcon      className="size-3.5 text-purple-500"  />} label="Интерфейсы" value={`${sel.interfaces.length}`} />
          </div>
          <TotalsRow rxTotal={sel.rxTotal} txTotal={sel.txTotal} rxSeries={sel.rxSeries} txSeries={sel.txSeries} />
          <div className="mt-4 pt-4 border-t">
            <h3 className="text-sm font-semibold mb-2 flex items-center gap-2">
              <CableIcon className="size-4 text-muted-foreground" />
              Привязанные интерфейсы
              <span className="text-xs text-muted-foreground font-normal">({sel.interfaces.length})</span>
            </h3>
            <BoundIfacesList clients={sel.interfaces} showServer />
          </div>
        </>
      )}
    </>
  )
}

function IfaceDetail({ sel, range, setRange }: { sel: BoundIfaceTraffic; range: Range; setRange: (r: Range) => void }) {
  return (
    <>
      <DetailHeader range={range} setRange={setRange}>
        <StatusDot status={sel.status} />
        <div className="leading-tight min-w-0">
          <h2 className="text-base font-mono font-semibold break-all">{boundIfaceLabel(sel)}</h2>
          <p className="text-xs text-muted-foreground truncate">{sel.comment || sel.userLogin}</p>
        </div>
        <Badge variant={TYPE_VARIANT[sel.interfaceType]} size="sm">{IFACE_TYPE_LABEL[sel.interfaceType]}</Badge>
        <span className="text-xs font-mono bg-muted px-1.5 py-0.5 rounded flex items-center gap-1 shrink-0">
          <Flag code={sel.serverCountry} />{sel.serverSite}
        </span>
      </DetailHeader>
      <TrafficRxTxChart rx={sel.rxSeries} tx={sel.txSeries} range={range} />
      <div className="grid grid-cols-2 sm:grid-cols-4 gap-4 mt-4 pt-4 border-t">
        <StatChip icon={<ArrowDownIcon  className="size-3.5 text-emerald-500" />} label="RX" value={fmtRate(sel.rxNow)} />
        <StatChip icon={<ArrowUpIcon    className="size-3.5 text-blue-500"    />} label="TX" value={fmtRate(sel.txNow)} />
        <StatChip icon={<TrendingUpIcon className="size-3.5 text-amber-500"   />} label="Пик RX"    value={fmtRate(sel.rxPeak)} />
        <StatChip icon={<TrendingUpIcon className="size-3.5 text-amber-500"   />} label="Пик TX"    value={fmtRate(sel.txPeak)} />
      </div>
      <TotalsRow rxTotal={sel.rxTotal} txTotal={sel.txTotal} rxSeries={sel.rxSeries} txSeries={sel.txSeries} />
      <div className="mt-4 pt-4 border-t grid grid-cols-2 sm:grid-cols-3 gap-4">
        <div>
          <p className="text-xs text-muted-foreground mb-0.5">Сервер</p>
          <p className="text-sm font-mono break-all">{sel.serverName}</p>
        </div>
        <div>
          <p className="text-xs text-muted-foreground mb-0.5">Тип</p>
          <p className="text-sm">{IFACE_TYPE_LABEL[sel.interfaceType]}</p>
        </div>
        <div>
          <p className="text-xs text-muted-foreground mb-0.5">Пользователь</p>
          <p className="text-sm font-mono break-all">{sel.userLogin}</p>
        </div>
      </div>
    </>
  )
}

// ─── page ─────────────────────────────────────────────────────────────────────

const GROUP_MODES: Array<{ mode: GroupMode; icon: ReactNode; label: string }> = [
  { mode: "servers", icon: <ServerIcon className="size-3" />, label: "Серверы" },
  { mode: "users",   icon: <UsersIcon  className="size-3" />, label: "Клиенты" },
  { mode: "ifaces",  icon: <CableIcon  className="size-3" />, label: "Интерфейсы" },
  { mode: "flows",   icon: <GitBranchIcon className="size-3" />, label: "Потоки" },
]

const SORT_FIELDS: Array<{ field: SortField; label: string; modesOnly?: GroupMode[] }> = [
  { field: "rx",       label: "RX" },
  { field: "tx",       label: "TX" },
  { field: "name",     label: "Имя" },
  { field: "sessions", label: "Сессий", modesOnly: ["servers", "users", "flows"] },
]

const toLiveServer = (s: LiveTrafficServer): ServerTraffic => {
  return {
    id: String(s.id),
    name: s.name,
    site: s.site || "—",
    country: s.country || "UN",
    status: s.status,
    sessions: s.sessions,
    boundIfaces: [],
    ...projectTrafficObservations(s),
  }
}

const toLiveBound = (c: BoundIfaceTraffic): BoundIfaceTraffic => ({
  ...c,
  interfaceType: (["ether", "gre", "wg", "other"].includes(c.interfaceType) ? c.interfaceType : "other") as InterfaceType,
  ...projectTrafficObservations(c),
  status: projectTrafficBindingStatus(c.status,c.statusObservedAt,c.statusExpiresAt),
})

const toLiveUser = (u: UserTraffic & { interfaces?: BoundIfaceTraffic[] }): UserTraffic => {
  const ifaces = (u.interfaces ?? []).map(toLiveBound)
  return {
    ...u,
    role: ROLE_LABEL[u.role as keyof typeof ROLE_LABEL] ?? u.role,
    interfaces: ifaces,
    ...projectTrafficObservations(u),
  }
}

export default function TrafficPage() {
  const { mode, backendUrl } = useDataSource()
  const isLive = mode === "live"
  const [trafficClock, setTrafficClock] = useState(() => Date.now())
  useEffect(() => {
    if (!isLive) return
    const timer = setInterval(() => setTrafficClock(Date.now()), 10_000)
    return () => clearInterval(timer)
  }, [isLive])
  const apiFetch = useMemo(() => makeApiFetch(backendUrl), [backendUrl])

  const [groupMode, setGroupMode] = useState<GroupMode>("servers")
  const [sortField, setSortField] = useState<SortField>("rx")
  const [sortDir,   setSortDir]   = useState<SortDir>("desc")
  const [selectedId, setSelectedId] = useState("srv1")
  const [range, setRange] = useState<Range>("1h")
  const [search, setSearch] = useState("")
  const [trafficRetry, setTrafficRetry] = useState(0)
  const [liveRetry, setLiveRetry] = useState(0)
  const trafficKey = JSON.stringify([isLive, backendUrl, range, groupMode, trafficRetry])
  const [trafficState, setTrafficState] = useState<{ key: string; status: "ready" | "error"; receivedAt?: number; error?: string } | null>(null)
  const trafficReady = trafficState?.key === trafficKey && trafficState.status === "ready"
  const trafficLoading = trafficState?.key !== trafficKey
  const trafficError = trafficState?.key === trafficKey ? trafficState.error : undefined
  const [liveServers, setLiveServers] = useState<ServerTraffic[]>([])
  const trafficSourceKey = JSON.stringify([isLive, backendUrl])
  const [liveServerOwner, setLiveServerOwner] = useState<string | null>(null)
  const confirmedLiveServer = isLive && liveServerOwner === trafficSourceKey
    && /^[1-9]\d*$/.test(selectedId) && Number.isSafeInteger(Number(selectedId))
    && liveServers.some(server => server.id === selectedId)
  const [serverIfaces, setServerIfaces] = useState<LiveTrafficInterface[]>([])
  const [selectedIface, setSelectedIface] = useState("__all__")
  const [hideDisabledIfaces, setHideDisabledIfaces] = useState(true)
  const [detailRetry, setDetailRetry] = useState(0)
  const [detailResult, setDetailResult] = useState<{ key: string; server: ServerTraffic | null; receivedAt?: number; error: string | null } | null>(null)
  const [liveUsers, setLiveUsers] = useState<UserTraffic[]>([])
  const [liveBoundIfaces, setLiveBoundIfaces] = useState<BoundIfaceTraffic[]>([])
  const [flowScope, setFlowScope] = useState<FlowScope>("servers")
  const [flowRetry, setFlowRetry] = useState(0)
  const flowKey = JSON.stringify([isLive, groupMode, backendUrl, range, flowScope, flowRetry])
  const [flowResult, setFlowResult] = useState<{ key: string; receivedAt?: number; monthlyServers?: ServerRead[]; stats?: FlowStatsDto; exporters?: FlowEntityCard[]; clients?: FlowEntityCard[]; error?: string } | null>(null)
  const currentFlows = flowResult?.key === flowKey ? flowResult : null
  const liveBusy = isLive && groupMode === "flows" && !currentFlows
  const liveError = currentFlows?.error
  const flowStats = currentFlows?.stats ?? null
  const flowExporters = useMemo(() => currentFlows?.exporters ?? [], [currentFlows])
  const flowClients = useMemo(() => currentFlows?.clients ?? [], [currentFlows])
  const [flowMonth, setFlowMonth] = useState(() => new Date().toISOString().slice(0, 7))
  const flowMonthValid = /^(?!0000)\d{4}-(0[1-9]|1[0-2])$/.test(flowMonth) && flowMonth <= new Date().toISOString().slice(0, 7)
  const [analyticsRetry, setAnalyticsRetry] = useState(0)
  const [analyticsResult, setAnalyticsResult] = useState<{ key: string; receivedAt?: number; data?: FlowAnalyticsDto; monthly?: FlowMonthlyDto; error?: string } | null>(null)
  const flowIfaceOwner = JSON.stringify([isLive, backendUrl, groupMode, flowScope, selectedId])
  const [flowIfaceSelection, setFlowIfaceSelection] = useState<{ owner: string; iface: string } | null>(null)
  const flowIface = flowIfaceSelection?.owner === flowIfaceOwner ? flowIfaceSelection.iface : "__all__"
  const setFlowIface = (iface: string) => setFlowIfaceSelection({ owner: flowIfaceOwner, iface })
  const [flowDedup, setFlowDedup] = useState(true)
  const [flowExcludeMesh, setFlowExcludeMesh] = useState(true)
  const [flowExcludeOverlay, setFlowExcludeOverlay] = useState(true)
  const [overlayOpen, setOverlayOpen] = useState(false)
  const [catalogServers, setCatalogServers] = useState<ServerRead[]>([])
  const effectiveMode: GroupMode = groupMode
  const detailKey = JSON.stringify([isLive, backendUrl, effectiveMode, selectedId, range, selectedIface, detailRetry])
  const currentDetail = detailResult?.key === detailKey ? detailResult : null
  const detailBusy = isLive && effectiveMode === "servers" && Boolean(selectedId) && currentDetail === null
  const { sample: liveSample, error: liveStreamError, receivedAt: liveReceivedAt } = useTrafficLive({
    enabled: confirmedLiveServer && effectiveMode === "servers",
    backendUrl,
    serverId: selectedId,
    iface: selectedIface,
    reloadKey: liveRetry,
  })
  const confirmedFlowSelection = isLive && Boolean(currentFlows) && !liveError && (
    range === "30d"
      ? /^[1-9]\d*$/.test(selectedId) && Number.isSafeInteger(Number(selectedId)) && Boolean(currentFlows?.monthlyServers?.some(server => String(server.id) === selectedId))
      : flowScope === "servers"
        ? /^[1-9]\d*$/.test(selectedId) && Number.isSafeInteger(Number(selectedId)) && flowExporters.some(card => card.id === selectedId)
        : Boolean(selectedId) && flowClients.some(card => card.id === selectedId)
  )
  const flowLiveEnabled = confirmedFlowSelection && effectiveMode === "flows" && range === "5m"
  const { sample: flowLiveSample, error: flowLiveError, receivedAt: flowLiveReceivedAt } = useFlowLive({
    enabled: flowLiveEnabled,
    backendUrl,
    range,
    serverId: flowScope === "servers" ? selectedId : undefined,
    userId: flowScope === "users" ? selectedId : undefined,
    iface: flowIface,
    dedup: flowDedup,
    excludeMesh: flowExcludeMesh,
    excludeOverlay: flowExcludeOverlay,
  })

  useEffect(() => {
    if (!isLive || groupMode === "flows") return
    let cancelled = false
    const loadLiveTraffic = async (targetRange: Range) => {
      const key = JSON.stringify([isLive, backendUrl, targetRange, groupMode, trafficRetry])
      try {
        const q = encodeURIComponent(targetRange === "30d" ? "24h" : targetRange)
        const [srvRes, usersRes, ifacesRes] = await Promise.all([
          apiFetch<{ servers: LiveTrafficServer[] }>(`/api/traffic/servers?range=${q}`),
          apiFetch<{ users: UserTraffic[] }>(`/api/traffic/users?range=${q}`),
          apiFetch<{ interfaces: BoundIfaceTraffic[] }>(`/api/traffic/bound-interfaces?range=${q}`),
        ])
        if (cancelled) return
        const liveIfaces = ifacesRes.interfaces.map(toLiveBound)
        const mapped: ServerTraffic[] = srvRes.servers.map((s) => {
          const base = toLiveServer(s)
          return { ...base, boundIfaces: liveIfaces.filter((i) => i.serverId === String(s.id)) }
        })
        const mappedUsers = usersRes.users.map(toLiveUser)
        setLiveServers(mapped)
        setLiveServerOwner(JSON.stringify([isLive, backendUrl]))
        setLiveUsers(mappedUsers)
        setLiveBoundIfaces(liveIfaces)
        setTrafficState({ key, status: "ready", receivedAt: Date.now() })
        setSelectedId((prev) => {
          if (groupMode === "users") return mappedUsers.some((x) => x.id === prev) ? prev : (mappedUsers[0]?.id ?? "")
          if (groupMode === "ifaces") return liveIfaces.some((x) => x.id === prev) ? prev : (liveIfaces[0]?.id ?? "")
          return mapped.some((x) => x.id === prev) ? prev : (mapped[0]?.id ?? "")
        })
      } catch (e) {
        if (!cancelled) setTrafficState({ key, status: "error", error: e instanceof Error ? e.message : "Не удалось загрузить трафик" })
      }
    }
    void loadLiveTraffic(range)
    return () => { cancelled = true }
  }, [apiFetch, isLive, groupMode, backendUrl, trafficRetry, range])

  useEffect(() => {
    if (!isLive || effectiveMode !== "flows") return
    let cancelled = false
    if (range === "30d") {
      void listServers(backendUrl).then(servers => {
        if (cancelled) return
        setFlowResult({ key: flowKey, receivedAt: Date.now(), monthlyServers: servers })
        setSelectedId(prev => servers.some(server => String(server.id) === prev) ? prev : String(servers[0]?.id ?? ""))
      }).catch(error => {
        if (!cancelled) setFlowResult({ key: flowKey, error: error instanceof Error ? error.message : "Не удалось загрузить каталог серверов" })
      })
      return () => { cancelled = true }
    }
    void Promise.all([
      getTrafficFlows(backendUrl, range),
      getFlowExporters(backendUrl, range),
      getFlowClients(backendUrl, range),
    ]).then(([stats, exporters, clients]) => {
      if (cancelled) return
      setFlowResult({ key: flowKey, receivedAt: Date.now(), stats, exporters: exporters.exporters, clients: clients.clients })
      setSelectedId(prev => {
        const list = flowScope === "users" ? clients.clients : exporters.exporters
        return list.some(x => x.id === prev) ? prev : (list[0]?.id ?? "")
      })
    }).catch(e => {
      if (!cancelled) setFlowResult({ key: flowKey, error: e instanceof Error ? e.message : "Не удалось загрузить потоки" })
    })
    return () => { cancelled = true }
  }, [isLive, effectiveMode, backendUrl, range, flowScope, flowKey])

  const analyticsKey = JSON.stringify([flowKey, selectedId, flowIface, flowDedup, flowExcludeMesh, flowExcludeOverlay, analyticsRetry, range === "30d" ? flowMonth : null])
  const currentAnalytics = analyticsResult?.key === analyticsKey ? analyticsResult : null
  const analyticsLoading = confirmedFlowSelection && effectiveMode === "flows" && (range !== "30d" || flowMonthValid) && !currentAnalytics
  useEffect(() => {
    if (!confirmedFlowSelection || effectiveMode !== "flows" || (range === "30d" && !flowMonthValid)) return
    let cancelled = false
    const request = range === "30d"
      ? getFlowMonthly(backendUrl, { month: flowMonth, serverId: flowScope === "servers" ? selectedId : undefined }).then(monthly => ({ monthly }))
      : getFlowAnalytics(backendUrl, {
        range, serverId: flowScope === "servers" ? selectedId : undefined,
        userId: flowScope === "users" ? selectedId : undefined,
        iface: flowIface, dedup: flowDedup, excludeMesh: flowExcludeMesh, excludeOverlay: flowExcludeOverlay,
      }).then(data => ({ data }))
    void request.then(result => {
      if (!cancelled) setAnalyticsResult({ key: analyticsKey, receivedAt: Date.now(), ...result })
    }).catch(e => {
      if (!cancelled) setAnalyticsResult({ key: analyticsKey, error: e instanceof Error ? e.message : "Не удалось загрузить аналитику" })
    })
    return () => { cancelled = true }
  }, [confirmedFlowSelection, isLive, effectiveMode, selectedId, range, flowScope, flowIface, flowDedup, flowExcludeMesh, flowExcludeOverlay, backendUrl, analyticsKey, flowMonth, flowMonthValid])

  useEffect(() => {
    if (!isLive) return
    void listServers(backendUrl).then(setCatalogServers).catch(() => setCatalogServers([]))
  }, [isLive, backendUrl])

  const activeServerTraffic = useMemo(() => isLive ? (trafficReady ? liveServers.map(s => ({ ...s, ...projectTrafficObservations(s, trafficClock) })) : []) : serverTraffic, [isLive, trafficReady, liveServers, trafficClock])
  const activeUserTraffic = useMemo(() => isLive ? (trafficReady ? liveUsers.map(u => ({ ...u, ...projectTrafficObservations(u, trafficClock), interfaces: u.interfaces.map(toLiveBound) })) : []) : userTraffic, [isLive, trafficReady, liveUsers, trafficClock])
  const activeBoundIfaces = useMemo(() => isLive ? (trafficReady ? liveBoundIfaces.map(c => ({ ...c, ...projectTrafficObservations(c, trafficClock), status: projectTrafficBindingStatus(c.status,c.statusObservedAt,c.statusExpiresAt,trafficClock) })) : []) : boundIfaces, [isLive, trafficReady, liveBoundIfaces, trafficClock])
  const visibleIfaces = useMemo(
    () => hideDisabledIfaces ? serverIfaces.filter((i) => !i.disabled && i.running) : serverIfaces,
    [serverIfaces, hideDisabledIfaces],
  )

  useEffect(() => {
    if (!confirmedLiveServer || effectiveMode !== "servers") {
      // eslint-disable-next-line react-hooks/set-state-in-effect
      setServerIfaces([])
      setSelectedIface("__all__")
      return
    }
    let cancelled = false
    setServerIfaces([])
    setSelectedIface("__all__")
    apiFetch<{ interfaces: LiveTrafficInterface[] }>(`/api/traffic/servers/${encodeURIComponent(selectedId)}/interfaces`)
      .then((res) => { if (!cancelled) setServerIfaces(res.interfaces) })
      .catch(() => { if (!cancelled) setServerIfaces([]) })
    return () => { cancelled = true }
  }, [confirmedLiveServer, selectedId, effectiveMode, apiFetch])

  useEffect(() => {
    if (!confirmedLiveServer || effectiveMode !== "servers") {
      return
    }
    let cancelled = false
    apiFetch<{ server: LiveTrafficServer }>(`/api/traffic/servers/${encodeURIComponent(selectedId)}?range=${encodeURIComponent(range)}&iface=${encodeURIComponent(selectedIface)}`)
      .then((res) => {
        if (cancelled) return
        setDetailResult({ key: detailKey, receivedAt: Date.now(), error: null, server: {
          ...toLiveServer(res.server),
          boundIfaces: liveBoundIfaces.filter((i) => i.serverId === selectedId),
        } })
      })
      .catch((error: unknown) => {
        if (!cancelled) setDetailResult({ key: detailKey, server: null, error: error instanceof Error ? error.message : "Не удалось загрузить детали трафика" })
      })
    return () => { cancelled = true }
  }, [confirmedLiveServer, effectiveMode, selectedId, range, selectedIface, apiFetch, liveBoundIfaces, detailKey])

  const handleModeChange = (next: GroupMode) => {
    setGroupMode(next)
    if (next === "servers") {
      setSelectedId(activeServerTraffic[0]?.id ?? "srv1")
      if (range === "30d") setRange("1h")
    } else if (next === "users") {
      setSelectedId((isLive ? liveUsers : userTraffic)[0]?.id ?? "u1")
      if (range === "30d") setRange("1h")
    } else if (next === "ifaces") {
      setSelectedId((isLive ? liveBoundIfaces : boundIfaces)[0]?.id ?? "")
      if (range === "30d") setRange("1h")
    } else if (next === "flows") {
      setFlowScope("servers")
      setFlowIface("__all__")
      setRange("5m")
      setSelectedId(flowExporters[0]?.id ?? "")
    }
    setSortField("rx")
    setSortDir("desc")
    setSearch("")
  }

  const toggleSort = (field: SortField) => {
    if (sortField === field) setSortDir(d => d === "desc" ? "asc" : "desc")
    else { setSortField(field); setSortDir("desc") }
  }

  const q = search.toLowerCase()

  const sortedServers = useMemo(() => {
    return [...activeServerTraffic]
      .filter(s => !q || s.name.toLowerCase().includes(q) || s.site.toLowerCase().includes(q))
      .sort((a, b) => {
        let v = 0
        if (sortField === "rx")            v = compareRates(a.rxNow, b.rxNow, sortDir)
        else if (sortField === "tx")       v = compareRates(a.txNow, b.txNow, sortDir)
        else if (sortField === "name")     v = a.name.localeCompare(b.name)
        else if (sortField === "sessions") v = a.sessions - b.sessions
        return sortDir === "desc" ? -v : v
      })
  }, [sortField, sortDir, q, activeServerTraffic])

  const sortedUsers = useMemo(() => {
    return [...activeUserTraffic]
      .filter(u => !q || u.login.toLowerCase().includes(q) || u.displayName.toLowerCase().includes(q))
      .sort((a, b) => {
        let v = 0
        if (sortField === "rx")            v = compareRates(a.rxNow, b.rxNow, sortDir)
        else if (sortField === "tx")       v = compareRates(a.txNow, b.txNow, sortDir)
        else if (sortField === "name")     v = a.login.localeCompare(b.login)
        else if (sortField === "sessions") v = a.interfaces.length - b.interfaces.length
        return sortDir === "desc" ? -v : v
      })
  }, [sortField, sortDir, q, activeUserTraffic])

  const sortedIfaces = useMemo(() => {
    return [...activeBoundIfaces]
      .filter(c => !q
        || c.interfaceName.toLowerCase().includes(q)
        || (c.peerName ?? "").toLowerCase().includes(q)
        || c.comment.toLowerCase().includes(q)
        || c.userLogin.toLowerCase().includes(q))
      .sort((a, b) => {
        let v = 0
        if (sortField === "rx")        v = compareRates(a.rxNow, b.rxNow, sortDir)
        else if (sortField === "tx")   v = compareRates(a.txNow, b.txNow, sortDir)
        else if (sortField === "name") v = a.interfaceName.localeCompare(b.interfaceName)
        return sortDir === "desc" ? -v : v
      })
  }, [sortField, sortDir, q, activeBoundIfaces])

  const flowCards = flowScope === "users" ? flowClients : flowExporters
  const sortedFlowCards = useMemo(() => {
    return [...flowCards]
      .filter((c) => !q || c.name.toLowerCase().includes(q) || c.subtitle.toLowerCase().includes(q) || c.site.toLowerCase().includes(q))
      .sort((a, b) => {
        let v = 0
        if (sortField === "rx") v = compareRates(a.rxNow, b.rxNow, sortDir)
        else if (sortField === "tx") v = compareRates(a.txNow, b.txNow, sortDir)
        else if (sortField === "name") v = a.name.localeCompare(b.name)
        else if (sortField === "sessions") v = a.sessions - b.sessions
        return sortDir === "desc" ? -v : v
      })
  }, [flowCards, q, sortField, sortDir])
  const monthlyServers = currentFlows?.monthlyServers ?? []
  const visibleMonthlyServers = monthlyServers.filter(server => !q || server.name.toLowerCase().includes(q)).sort((a, b) => a.name.localeCompare(b.name))
  const monthlyServer = monthlyServers.find(server => String(server.id) === selectedId)
  const selFlowCard = range === "30d"
    ? (monthlyServer ? { id: String(monthlyServer.id), name: monthlyServer.name, country: monthlyServer.country, site: monthlyServer.site } : null)
    : flowCards.find((c) => c.id === selectedId) ?? null
  const displayedFlow = currentFlows && !liveError ? (flowLiveSample ?? currentAnalytics?.data ?? null) : null

  const selServer = useMemo(() => activeServerTraffic.find(s => s.id === selectedId) ?? activeServerTraffic[0], [selectedId, activeServerTraffic])
  const detailServer = isLive ? (currentDetail?.server ? { ...currentDetail.server, ...projectTrafficObservations(currentDetail.server, trafficClock), boundIfaces: currentDetail.server.boundIfaces.map(toLiveBound) } : null) : selServer
  const selUser   = useMemo(() => activeUserTraffic.find(u => u.id === selectedId)   ?? activeUserTraffic[0],   [selectedId, activeUserTraffic])
  const selIface  = useMemo(() => activeBoundIfaces.find(c => c.id === selectedId)    ?? activeBoundIfaces[0],    [selectedId, activeBoundIfaces])

  const kpiSource = effectiveMode === "users"
    ? activeUserTraffic
    : effectiveMode === "ifaces"
      ? activeBoundIfaces
      : activeServerTraffic
  const totalRx = kpiSource.every(s => s.rxNow !== null) ? kpiSource.reduce((a, s) => a + (s.rxNow ?? 0), 0) : null
  const totalTx = kpiSource.every(s => s.txNow !== null) ? kpiSource.reduce((a, s) => a + (s.txNow ?? 0), 0) : null
  const peakRx = kpiSource.every(s => s.rxPeak !== null) ? kpiSource.reduce((a, s) => Math.max(a, s.rxPeak ?? 0), 0) : null
  const peakTx = kpiSource.every(s => s.txPeak !== null) ? kpiSource.reduce((a, s) => Math.max(a, s.txPeak ?? 0), 0) : null

  const visibleSortFields = SORT_FIELDS.filter(s => !s.modesOnly || s.modesOnly.includes(effectiveMode))
  const ingestLine = flowIngestLine(flowStats)
  const collectorAlive = Boolean(flowStats?.listenerBound || flowStats?.packetsReceived)
  const flowError = liveError
    || flowLiveError
    || (displayedFlow?.degraded ? "Коллектор перегружен: упрощённая аналитика" : null)

  const flowLiveHint = flowLiveError ? (flowLiveSample ? "Последние данные · live недоступен" : "История · live недоступен") : flowLiveSample ? "live" : undefined
  const flowKpiItems = [
    {
      id: "exporters",
      label: "Экспортёры",
      value: String(flowExporters.length),
      icon: <ServerIcon className="size-4" />,
      iconClassName: "text-info",
    },
    {
      id: "bps",
      label: "Скорость",
      value: displayedFlow ? fmtRate(displayedFlow.bpsNow / 1_000_000) : "—",
      hint: flowLiveHint,
      icon: <ActivityIcon className="size-4" />,
      iconClassName: "text-success",
    },
    {
      id: "src",
      label: "Уник. src",
      value: displayedFlow ? String(displayedFlow.uniqueSrc) : "—",
      icon: <ArrowUpIcon className="size-4" />,
      iconClassName: "text-muted-foreground",
    },
    {
      id: "proto",
      label: "Топ протокол",
      value: displayedFlow?.topProto ?? "—",
      icon: <GitBranchIcon className="size-4" />,
      iconClassName: "text-warning",
    },
  ]

  const counterKpiItems = [
              {
                id: "rx",
                label: "RX",
                value: fmtRate(totalRx),
                icon: <ArrowDownIcon className="size-4" />,
                iconClassName: "text-success",
              },
              {
                id: "tx",
                label: "TX",
                value: fmtRate(totalTx),
                icon: <ArrowUpIcon className="size-4" />,
                iconClassName: "text-info",
              },
              {
                id: "peak-rx",
                label: "Пик RX",
                value: fmtRate(peakRx),
                icon: <TrendingUpIcon className="size-4" />,
                iconClassName: "text-warning",
              },
              {
                id: "peak-tx",
                label: "Пик TX",
                value: fmtRate(peakTx),
                icon: <TrendingUpIcon className="size-4" />,
                iconClassName: "text-warning",
              },
            ]

  return (
    <div className="flex flex-col h-full">
      <PageHeader
        crumbs={[{ label: "Обзор" }, { label: "Трафик" }]}
        actions={
          <>
            <Button
              variant="outline"
              size="sm"
              onClick={() => {
                if (effectiveMode === "flows") setFlowRetry(value => value + 1)
                else setTrafficRetry(value => value + 1)
              }}
              disabled={isLive && (effectiveMode === "flows" ? liveBusy : trafficLoading)}
            >
              <RefreshCwIcon className={cn("size-4", isLive && (effectiveMode === "flows" ? liveBusy : trafficLoading) && "animate-spin")} />Обновить
            </Button>
          </>
        }
      />

      {/* ── mode tab bar ── */}
      <div className="border-b bg-background shrink-0">
        <div role="group" aria-label="Разделы трафика" className="flex items-center overflow-x-auto px-3 sm:px-6">
          {GROUP_MODES.map(({ mode, icon, label }) => (
            <button type="button" aria-pressed={effectiveMode === mode} key={mode} onClick={() => handleModeChange(mode)}
              className={cn(
                "flex items-center gap-2 px-4 py-3 text-sm font-medium border-b-2 transition-colors -mb-px",
                effectiveMode === mode
                  ? "border-primary text-foreground"
                  : "border-transparent text-muted-foreground hover:text-foreground hover:border-border",
              )}>
              {icon}{label}
            </button>
          ))}
        </div>
      </div>

      <div className="flex-1 min-w-0 overflow-y-auto p-3 sm:p-6">
        <div className="flex flex-col gap-5">
          {!(effectiveMode === "flows" && range === "30d") && (!isLive || !(effectiveMode === "flows" ? liveError : trafficError)) && <KpiStatGrid
            isLoading={isLive && (effectiveMode === "flows" ? liveBusy : trafficLoading)}
            aria-label="Сводка трафика"
            items={effectiveMode === "flows" ? flowKpiItems : counterKpiItems}
          />}

          {isLive && effectiveMode !== "flows" && trafficReady && <TrafficDataTime label="Получение списка трафика" receivedAt={trafficState.receivedAt} source="API" />}
          {effectiveMode === "flows" ? (
            <div className="flex flex-col gap-3">
              <div className="flex items-center justify-between gap-2 flex-wrap">
                <p className="text-xs text-muted-foreground font-mono truncate min-w-0">
                  {ingestLine ?? "IPFIX коллектор"}
                </p>
                <Button size="sm" onClick={() => setOverlayOpen(true)} disabled={!isLive}>
                  <PlusIcon className="size-4" />
                  Подключить JH
                </Button>
              </div>
              {isLive && <TrafficDataTime label="Получение списка потоков" receivedAt={currentFlows?.receivedAt} source="API" />}
              {liveBusy && <p role="status">Загрузка потоков…</p>}
              {liveError && <Alert variant="destructive" role="alert"><AlertTitle>Потоки недоступны</AlertTitle><AlertDescription>{liveError}<Button size="sm" variant="outline" onClick={() => setFlowRetry(value => value + 1)}>Повторить загрузку потоков</Button></AlertDescription></Alert>}
              {flowError && !liveError && (
                <div role="alert" className="text-xs text-destructive bg-destructive/10 border border-destructive/20 rounded-md px-3 py-2">
                  {flowError}
                </div>
              )}
              <div className="grid min-w-0 grid-cols-1 xl:grid-cols-[300px_minmax(0,1fr)] gap-5 items-start">
                <div className="flex flex-col gap-3">
                  <div role="group" aria-label="Источник потоков" className="flex gap-1">
                    <button
                      type="button"
                      aria-pressed={flowScope === "servers"}
                      onClick={() => { setFlowScope("servers"); setFlowIface("__all__") }}
                      className={cn(
                        "text-[10px] px-2 py-0.5 rounded border transition-colors",
                        flowScope === "servers"
                          ? "border-primary bg-primary/10 text-primary font-medium"
                          : "border-border text-muted-foreground hover:text-foreground",
                      )}
                    >
                      Серверы
                    </button>
                    <button
                      type="button"
                      aria-pressed={flowScope === "users"}
                      onClick={() => { setFlowScope("users"); setFlowIface("__all__"); if (range === "30d") setRange("1h") }}
                      className={cn(
                        "text-[10px] px-2 py-0.5 rounded border transition-colors",
                        flowScope === "users"
                          ? "border-primary bg-primary/10 text-primary font-medium"
                          : "border-border text-muted-foreground hover:text-foreground",
                      )}
                    >
                      Клиенты
                    </button>
                  </div>
                  <div className="relative">
                    <SearchIcon className="absolute left-2.5 top-1/2 -translate-y-1/2 size-3.5 text-muted-foreground pointer-events-none" />
                    <input
                      type="text"
                      value={search}
                      onChange={(e) => setSearch(e.target.value)}
                      aria-label="Поиск потоков" placeholder="Поиск…"
                      className="w-full pl-8 pr-3 h-8 text-xs bg-muted/50 border border-border rounded-md outline-none focus:border-primary transition-colors"
                    />
                  </div>
                  <div className={cn("flex gap-1 flex-wrap", range === "30d" && "hidden")}>
                    <span className="text-[10px] text-muted-foreground self-center mr-0.5">Сортировка:</span>
                    {visibleSortFields.map(({ field, label }) => (
                      <button
                        key={field}
                        type="button"
                        onClick={() => toggleSort(field)}
                        className={cn(
                          "text-[10px] px-2 py-0.5 rounded border transition-colors",
                          sortField === field
                            ? "border-primary bg-primary/10 text-primary font-medium"
                            : "border-border text-muted-foreground hover:text-foreground",
                        )}
                      >
                        {label}{sortField === field ? (sortDir === "desc" ? " ↓" : " ↑") : ""}
                      </button>
                    ))}
                  </div>
                  {range === "30d" && <p className="text-xs text-muted-foreground">Серверы из каталога, включая неактивные. Удалённые серверы в список не входят.</p>}
                  <div className="flex flex-col gap-2">
                    {range === "30d" ? visibleMonthlyServers.map(server => <Button key={server.id} variant="outline" className="justify-start whitespace-normal break-all h-auto py-2" aria-pressed={String(server.id) === selectedId} onClick={() => setSelectedId(String(server.id))}>{server.name}</Button>) : sortedFlowCards.map((card) => (
                      <FlowEntityCardView
                        key={card.id}
                        card={card}
                        selected={card.id === (selFlowCard?.id ?? selectedId)}
                        onClick={() => { setFlowIface("__all__"); setSelectedId(card.id) }}
                      />
                    ))}
                    {!liveBusy && !liveError && (range === "30d" ? visibleMonthlyServers.length : sortedFlowCards.length) === 0 ? (
                      <p className="text-xs text-muted-foreground">
                        {range === "30d" ? (q ? "Нет серверов по этому запросу" : "В каталоге нет серверов") : flowEmptyHint(flowStats, collectorAlive) ?? "Нет экспортёров IPFIX. Подключите jump-host."}
                      </p>
                    ) : null}
                  </div>
                </div>
                <Frame dense className="w-full min-w-0 flex flex-col">
                  <FramePanel className="flex-1 min-w-0 p-3 sm:p-5">
                    {analyticsLoading && <p role="status">Загрузка аналитики…</p>}
                    {currentAnalytics?.error && <Alert variant="destructive" role="alert"><AlertTitle>Аналитика недоступна</AlertTitle><AlertDescription>{currentAnalytics.error}<Button size="sm" variant="outline" onClick={() => setAnalyticsRetry(value => value + 1)}>Повторить аналитику</Button></AlertDescription></Alert>}
                    {isLive && (displayedFlow || (monthlyServer && currentAnalytics?.monthly)) && <TrafficDataTime label="Получение аналитики потоков" receivedAt={flowLiveSample ? flowLiveReceivedAt : currentAnalytics?.receivedAt} source={flowLiveSample ? "live-поток" : "API"} />}
                    <FlowAnalyticsDetail
                      card={selFlowCard}
                      analytics={displayedFlow}
                      monthly={monthlyServer ? currentAnalytics?.monthly : undefined}
                      monthlyAvailable={flowScope === "servers"}
                      month={flowMonth}
                      onMonth={setFlowMonth}
                      monthValid={flowMonthValid}
                      range={range}
                      onRange={(r) => setRange(r as Range)}
                      selectedIface={flowIface}
                      onIface={setFlowIface}
                      dedup={flowDedup}
                      onDedup={setFlowDedup}
                      excludeMesh={flowExcludeMesh}
                      onExcludeMesh={setFlowExcludeMesh}
                      excludeOverlay={flowExcludeOverlay}
                      onExcludeOverlay={setFlowExcludeOverlay}
                      liveHint={flowLiveHint}
                      emptyHint={analyticsLoading ? "Загрузка аналитики…" : currentAnalytics?.error ? "Не удалось получить данные выбранного среза" : flowEmptyHint(flowStats, collectorAlive)}
                    />
                  </FramePanel>
                </Frame>
              </div>
              <FlowOverlaySheet
                open={overlayOpen}
                onOpenChange={setOverlayOpen}
                servers={catalogServers}
                backendUrl={backendUrl}
                onDone={() => { setFlowRetry(value => value + 1) }}
              />
            </div>
          ) : (
            <div className="grid min-w-0 grid-cols-1 xl:grid-cols-[300px_minmax(0,1fr)] gap-5 items-start">
            {/* ── left panel ── */}
            <div className="flex flex-col gap-3">

              {/* search */}
              <div className="relative">
                <SearchIcon className="absolute left-2.5 top-1/2 -translate-y-1/2 size-3.5 text-muted-foreground pointer-events-none" />
                <input
                  type="text"
                  value={search}
                  onChange={e => setSearch(e.target.value)}
                  aria-label="Поиск трафика" placeholder="Поиск…"
                  className="w-full pl-8 pr-3 h-8 text-xs bg-muted/50 border border-border rounded-md outline-none focus:border-primary transition-colors"
                />
              </div>

              {/* sort controls */}
              <div className="flex gap-1 flex-wrap">
                <span className="text-[10px] text-muted-foreground self-center mr-0.5">Сортировка:</span>
                {visibleSortFields.map(({ field, label }) => (
                  <button type="button" aria-pressed={sortField === field} key={field} onClick={() => toggleSort(field)}
                    className={cn(
                      "text-[10px] px-2 py-0.5 rounded border transition-colors",
                      sortField === field
                        ? "border-primary bg-primary/10 text-primary font-medium"
                        : "border-border text-muted-foreground hover:text-foreground",
                    )}>
                    {label}{sortField === field ? (sortDir === "desc" ? " ↓" : " ↑") : ""}
                  </button>
                ))}
              </div>
              {isLive && trafficLoading && <p role="status" className="text-sm text-muted-foreground">Загрузка списка трафика…</p>}
              {trafficError && <Alert variant="destructive" role="alert"><AlertTitle>Список трафика недоступен</AlertTitle><AlertDescription>{trafficError}<Button type="button" size="sm" variant="outline" onClick={() => setTrafficRetry(value => value + 1)}>Повторить загрузку списка</Button></AlertDescription></Alert>}

              {(!isLive || trafficReady) && (effectiveMode === "servers" ? sortedServers.length : effectiveMode === "users" ? sortedUsers.length : sortedIfaces.length) === 0 && (
                <p role="status" className="text-sm text-muted-foreground">
                  {search.trim() ? "По вашему запросу ничего не найдено" : effectiveMode === "servers" ? "Нет серверов с данными трафика" : effectiveMode === "users" ? "Нет клиентов с данными трафика" : "Нет привязанных интерфейсов с данными трафика"}
                </p>
              )}
              {/* entity list */}
              <div className="flex flex-col gap-2">
                {effectiveMode === "servers" && sortedServers.map(s => (
                  <ServerCard key={s.id} s={s} selected={s.id === selectedId} onClick={() => setSelectedId(s.id)} />
                ))}
                {effectiveMode === "users" && sortedUsers.map(u => (
                  <UserCard key={u.id} u={u} selected={u.id === selectedId} onClick={() => setSelectedId(u.id)} />
                ))}
                {effectiveMode === "ifaces" && sortedIfaces.map(c => (
                  <IfaceCard key={c.id} c={c} selected={c.id === selectedId} onClick={() => setSelectedId(c.id)} />
                ))}
              </div>
            </div>

            {/* ── detail panel ── */}
            <Frame dense className="w-full min-w-0 flex flex-col">
              <FramePanel className="flex-1 min-w-0 p-3 sm:p-5">
                {isLive && effectiveMode === "servers" && (
                  <div className="mb-3 pb-3 border-b">
                    <div className="flex items-center gap-2 flex-wrap">
                      <span className="text-[11px] text-muted-foreground mr-1">Интерфейс:</span>
                      <button
                        type="button" aria-pressed={hideDisabledIfaces}
                        onClick={() => setHideDisabledIfaces((v) => !v)}
                        className={cn(
                          "inline-flex items-center rounded-full border px-2 py-0.5 text-[10px] font-medium transition-all",
                          hideDisabledIfaces
                            ? "bg-muted text-foreground border-border"
                            : "text-muted-foreground border-border hover:text-foreground hover:border-foreground/40",
                        )}
                      >
                        {hideDisabledIfaces ? "Показать отключенные" : "Скрыть отключенные"}
                      </button>
                      <button
                        type="button" aria-pressed={selectedIface === "__all__"}
                        onClick={() => setSelectedIface("__all__")}
                        className={cn(
                          "inline-flex items-center gap-1 rounded-full border px-2.5 py-0.5 text-[10px] font-medium transition-all",
                          selectedIface === "__all__"
                            ? "bg-foreground text-background border-foreground"
                            : "border-border text-muted-foreground hover:text-foreground hover:border-foreground/40",
                        )}
                      >
                        Все
                      </button>
                      {visibleIfaces.map((iface, index) => {
                        const active = selectedIface === iface.name
                        return (
                          <button
                            key={`${iface.name}:${index}`}
                            type="button" aria-pressed={active}
                            onClick={() => setSelectedIface(iface.name)}
                            className={cn(
                              "inline-flex items-center gap-1.5 rounded-full border px-2.5 py-0.5 text-[10px] font-medium transition-all",
                              active
                                ? "bg-foreground text-background border-foreground"
                                : "border-border text-muted-foreground hover:text-foreground hover:border-foreground/40",
                              iface.disabled && !active && "opacity-40",
                            )}
                          >
                            <StatusDot status={iface.running && !iface.disabled ? "online" : "offline"} />
                            <span className="font-mono">{iface.name}</span>
                          </button>
                        )
                      })}
                      {detailBusy && <span className="text-[10px] text-muted-foreground ml-2">Загрузка...</span>}
                    </div>
                  </div>
                )}
                {isLive && effectiveMode === "servers" && !detailServer && <>
                  <DetailHeader range={range} setRange={setRange}><h2 className="text-base font-semibold">{selServer?.name ?? "Трафик сервера"}</h2></DetailHeader>
                  {detailBusy && <p role="status" className="text-sm text-muted-foreground">Загрузка выбранного периода и интерфейса…</p>}
                  {currentDetail?.error && <Alert variant="destructive" role="alert"><AlertTitle>Детали трафика недоступны</AlertTitle><AlertDescription>{currentDetail.error}<Button type="button" size="sm" variant="outline" onClick={() => setDetailRetry(n => n + 1)}>Повторить загрузку деталей</Button></AlertDescription></Alert>}
                </>}
                {isLive && effectiveMode === "servers" && detailServer && <>
                  <TrafficDataTime label="Получение истории сервера" receivedAt={currentDetail?.receivedAt} source="API" />
                  <TrafficDataTime label="Последнее измерение сервера" receivedAt={liveReceivedAt} source="live-поток" serverAt={liveSample?.at}
                    serverTimeLabel={liveSample?.timestampKind === "backend-receipt" ? "ответ RouterOS получен приложением" : undefined} />
                  {liveStreamError && <Alert variant={liveStreamError === "Ожидание нового live-измерения" ? "default" : "warning"} role="status" className="mb-3">
                    <AlertTitle>{liveStreamError === "Ожидание нового live-измерения" ? "Подключение live-потока" : "Live-поток: нет свежих данных"}</AlertTitle>
                    <AlertDescription className="break-words">{liveStreamError}
                      <Button size="sm" variant="outline" disabled={liveStreamError === "Ожидание нового live-измерения"} onClick={() => setLiveRetry(value => value + 1)}>Переподключить live</Button>
                    </AlertDescription>
                  </Alert>}
                </>}
                {effectiveMode === "servers" && detailServer && (
                  <ServerDetail
                    sel={detailServer}
                    range={range}
                    setRange={setRange}
                    liveRx={liveSample?.rxMbps}
                    liveTx={liveSample?.txMbps}
                    liveHint={liveStreamError === "Ожидание нового live-измерения"
                      ? (liveSample ? "Последнее live" : "История · ожидание live") : liveStreamError
                      ? (liveSample ? "Последнее live" : "История · live недоступен")
                      : liveSample ? "live" : isLive ? "История · ожидание live" : undefined}
                  />
                )}
                {effectiveMode === "users"   && selUser && <UserDetail sel={selUser} range={range} setRange={setRange} />}
                {effectiveMode === "ifaces"  && selIface && <IfaceDetail sel={selIface} range={range} setRange={setRange} />}
              </FramePanel>
            </Frame>

          </div>
          )}
        </div>
      </div>
    </div>
  )
}