"use client"

import type { IpsecCertInfoDto, IpsecPeerDto, IpsecServerSummaryDto } from "@mmapp/contracts/ipsec"
import { Badge } from "@/components/ui/badge"
import { Button } from "@/components/ui/button"
import { cn } from "@/lib/utils"
import {
  GlobeIcon,
  KeyRoundIcon,
  NetworkIcon,
  PencilIcon,
  ShieldCheckIcon,
  Trash2Icon,
} from "lucide-react"

function Row({ label, value, mono = true }: { label: string; value: string; mono?: boolean }) {
  return (
    <div className="flex items-baseline justify-between gap-3 py-1">
      <span className="text-xs text-muted-foreground">{label}</span>
      <span className={cn("truncate text-xs", mono ? "font-mono" : "")} title={value}>
        {value || "—"}
      </span>
    </div>
  )
}

function OriginBadge({ managed }: { managed: boolean }) {
  return managed ? null : (
    <Badge variant="outline" className="text-[10px]">RouterOS</Badge>
  )
}

function PeerRow({
  peer,
  onEdit,
  onDelete,
}: {
  peer: IpsecPeerDto
  onEdit?: (peer: IpsecPeerDto) => void
  onDelete?: (peer: IpsecPeerDto) => void
}) {
  const summary = [
    peer.exchangeMode,
    peer.address,
    peer.passive ? "passive" : undefined,
    peer.certificate,
    peer.profile,
  ].filter(Boolean).join(" · ")
  return (
    <div className="flex items-center justify-between gap-2 rounded-md border border-border/60 px-2.5 py-1.5">
      <div className="min-w-0">
        <div className="flex items-center gap-1.5">
          <span className="truncate text-xs font-medium">{peer.name}</span>
          <OriginBadge managed={peer.managed} />
          {peer.disabled ? <Badge variant="outline" className="text-[10px]">выкл</Badge> : null}
        </div>
        <p className="truncate font-mono text-[10px] text-muted-foreground">{summary || "—"}</p>
      </div>
      <div className="flex shrink-0 gap-0.5">
        {onEdit ? (
          <Button
            type="button"
            size="icon"
            variant="ghost"
            className="size-7"
            aria-label="Изменить peer"
            title="Изменить peer"
            onClick={() => onEdit(peer)}
          >
            <PencilIcon className="size-3.5" />
          </Button>
        ) : null}
        {onDelete ? (
          <Button
            type="button"
            size="icon"
            variant="ghost"
            className="size-7 text-destructive"
            aria-label="Удалить peer"
            title="Удалить peer"
            onClick={() => onDelete(peer)}
          >
            <Trash2Icon className="size-3.5" />
          </Button>
        ) : null}
      </div>
    </div>
  )
}

function CertRow({
  cert,
  onDelete,
}: {
  cert: IpsecCertInfoDto
  onDelete?: (cert: IpsecCertInfoDto) => void
}) {
  const roleLabel = cert.role === "ca" ? "CA" : cert.role === "server" ? "сервер" : cert.role === "client" ? "клиент" : "прочий"
  return (
    <div className="flex items-center justify-between gap-2 rounded-md border border-border/60 px-2.5 py-1.5">
      <div className="min-w-0">
        <div className="flex items-center gap-1.5">
          <KeyRoundIcon className="size-3.5 shrink-0 text-muted-foreground" />
          <span className="truncate text-xs font-medium">{cert.name}</span>
          <Badge variant="outline" className="text-[10px]">{roleLabel}</Badge>
          <OriginBadge managed={cert.managed} />
          {cert.trusted === false ? <Badge variant="outline" className="text-[10px]">не trusted</Badge> : null}
        </div>
        <p className="truncate font-mono text-[10px] text-muted-foreground">
          {[cert.commonName, cert.expiresAt ? `до ${cert.expiresAt}` : undefined].filter(Boolean).join(" · ") || "—"}
        </p>
      </div>
      {onDelete ? (
        <Button
          type="button"
          size="icon"
          variant="ghost"
          className="size-7 shrink-0 text-destructive"
          aria-label="Удалить сертификат"
          title="Удалить сертификат"
          onClick={() => onDelete(cert)}
        >
          <Trash2Icon className="size-3.5" />
        </Button>
      ) : null}
    </div>
  )
}

export interface IpsecServerGridProps {
  servers: IpsecServerSummaryDto[]
  onInit?: (row: IpsecServerSummaryDto) => void
  onRemove?: (row: IpsecServerSummaryDto) => void
  onEditPeer?: (serverId: string, peer: IpsecPeerDto) => void
  onDeletePeer?: (serverId: string, peer: IpsecPeerDto) => void
  onDeleteCert?: (serverId: string, cert: IpsecCertInfoDto) => void
}

function IpsecServerGrid({
  servers,
  onInit,
  onRemove,
  onEditPeer,
  onDeletePeer,
  onDeleteCert,
}: IpsecServerGridProps) {
  return (
    <div className="grid gap-3 md:grid-cols-2 xl:grid-cols-3">
      {servers.map((s) => {
        const certs = s.certs ?? []
        return (
          <div key={s.serverId} className="rounded-lg border border-border bg-card p-4 flex flex-col gap-3">
            <div className="flex items-start justify-between gap-2">
              <div className="min-w-0">
                <p className="truncate text-sm font-medium">{s.serverName}</p>
                <p className="truncate font-mono text-[11px] text-muted-foreground">
                  {s.serverEndpoint ?? "endpoint не определён"}
                </p>
              </div>
              {s.peers.length > 0 ? (
                <Badge className="gap-1">
                  <ShieldCheckIcon className="size-3" />
                  {s.peers.length} peer
                </Badge>
              ) : (
                <Badge variant="outline">нет peer</Badge>
              )}
            </div>

            <div className="flex flex-col gap-1.5">
              <p className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">
                Peer / серверы
              </p>
              {s.peers.length > 0 ? (
                <div className="flex flex-col gap-1.5">
                  {s.peers.map((p) => (
                    <PeerRow
                      key={p.rosId}
                      peer={p}
                      onEdit={onEditPeer ? (peer) => onEditPeer(s.serverId, peer) : undefined}
                      onDelete={onDeletePeer ? (peer) => onDeletePeer(s.serverId, peer) : undefined}
                    />
                  ))}
                </div>
              ) : (
                <p className="text-xs text-muted-foreground">Peers не найдены</p>
              )}
            </div>

            <div className="flex flex-col gap-1.5">
              <p className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">
                Сертификаты
              </p>
              {certs.length > 0 ? (
                <div className="flex flex-col gap-1.5">
                  {certs.map((c) => (
                    <CertRow
                      key={c.name}
                      cert={c}
                      onDelete={onDeleteCert ? (cert) => onDeleteCert(s.serverId, cert) : undefined}
                    />
                  ))}
                </div>
              ) : (
                <p className="text-xs text-muted-foreground">Сертификаты не найдены</p>
              )}
            </div>

            <div className="mt-auto flex flex-col divide-y divide-border/60">
              <Row label="Клиенты" value={`${s.clientsOnline} онлайн / ${s.clientsTotal}`} />
              <Row label="Пул адресов" value={s.pool ? `${s.pool.name}: ${s.pool.ranges}` : "—"} />
              <Row label="NAT (интернет)" value={s.natRuleManaged ? "managed masquerade" : "нет правила"} mono={false} />
              <Row label="Managed IKEv2" value={s.initialized ? "инициализирован" : "не инициализирован"} mono={false} />
            </div>

            <div className="flex justify-end gap-1.5">
              <Button
                type="button"
                size="sm"
                variant="outline"
                onClick={() => onInit?.(s)}
                title={s.initialized ? "Обновить managed-конфиг сервера" : "Инициализировать IKEv2-сервер"}
              >
                <GlobeIcon className="size-3.5" />
                {s.initialized ? "Переинициализировать" : "Инициализировать"}
              </Button>
              {s.initialized && onRemove ? (
                <Button
                  type="button"
                  size="icon"
                  variant="ghost"
                  className="size-8 text-destructive"
                  aria-label="Удалить IKEv2-сервер"
                  title="Удалить managed-объекты IKEv2 (identity/mode-config/peer/pool/NAT + сертификаты)"
                  onClick={() => onRemove(s)}
                >
                  <Trash2Icon className="size-3.5" />
                </Button>
              ) : null}
            </div>
          </div>
        )
      })}
      {servers.length === 0 ? (
        <div className="col-span-full flex items-center justify-center gap-2 py-16 text-sm text-muted-foreground">
          <NetworkIcon className="size-4" />
          Серверы не найдены
        </div>
      ) : null}
    </div>
  )
}

export { IpsecServerGrid }