"use client"

import * as React from "react"
import { NavMain, type NavGroup } from "@/components/nav-main"
import { AppSwitcher } from "@/components/app-switcher"
import { NavUser } from "@/components/nav-user"
import {
  Sidebar,
  SidebarContent,
  SidebarFooter,
  SidebarHeader,
} from "@/components/ui/sidebar"
import { navigationGroups } from "@/lib/navigation"
import { useDataSource } from "@/lib/data-source"
import { useEvoBGP } from "@/lib/evobgp-context"
import { requestJson } from "@/shared/api/http-client"
import {
  formatSidebarBadgeCount,
  mockSidebarBadgesByUrl,
  type SidebarCountsDto,
} from "@/lib/sidebar-badges"

type LiveSidebarCounts = SidebarCountsDto & {
  greTunnels?: number
  certificates?: number
  wireguard?: number
  ipsec?: number
  users?: number
  bgpSessions?: number
  vxlan?: number
  containers?: number
}

export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
  const { mode, backendUrl, prefsHydrated } = useDataSource()
  const evo = useEvoBGP()
  const [mounted, setMounted] = React.useState(false)
  const [liveCounts, setLiveCounts] = React.useState<LiveSidebarCounts | null>(null)

  const mockBadges = React.useMemo(() => mockSidebarBadgesByUrl(), [])

  React.useEffect(() => {
    queueMicrotask(() => {
      setMounted(true)
    })
  }, [])

  React.useEffect(() => {
    if (!prefsHydrated || mode !== "live") {
      if (mode !== "live") setLiveCounts(null)
      return
    }
    let cancelled = false
    const load = async () => {
      try {
        const [cJson, gJson] = await Promise.all([
          requestJson<SidebarCountsDto>(backendUrl, "/api/sidebar-counts"),
          requestJson<{ tunnels?: unknown[] }>(backendUrl, "/api/filters/gre-tunnels").catch(
            () => ({ tunnels: [] as unknown[] }),
          ),
        ])
        if (cancelled) return
        setLiveCounts({ ...cJson, greTunnels: (gJson.tunnels ?? []).length })
      } catch {
        if (!cancelled) setLiveCounts(null)
      }
    }
    void load()
    const id = window.setInterval(load, 120_000)
    return () => {
      cancelled = true
      window.clearInterval(id)
    }
  }, [mode, backendUrl, prefsHydrated])

  const navGroups = React.useMemo((): NavGroup[] => {
    function badgeFor(url: string): string | undefined {
      if (mode !== "live") return mockBadges[url]

      if (url === "/domains" || url === "/ip-ranges" || url === "/asns") {
        if (!evo.enabled) return undefined
        if (!evo.snapshot) return undefined
        if (url === "/domains") return formatSidebarBadgeCount(evo.snapshot.domains.length)
        if (url === "/ip-ranges") return formatSidebarBadgeCount(evo.snapshot.ipRanges.length)
        return formatSidebarBadgeCount(evo.snapshot.asns.length)
      }

      if (!liveCounts) return undefined

      if (url === "/servers") return formatSidebarBadgeCount(liveCounts.servers)
      if (url === "/users") return formatSidebarBadgeCount(liveCounts.users ?? 0)
      if (url === "/filters") return formatSidebarBadgeCount(liveCounts.filterRules)
      if (url === "/uptime") return formatSidebarBadgeCount(liveCounts.monitoringItems)
      if (url === "/gre") return formatSidebarBadgeCount(liveCounts.greTunnels ?? 0)
      if (url === "/certificates") return formatSidebarBadgeCount(liveCounts.certificates ?? 0)
      if (url === "/wireguard") return formatSidebarBadgeCount(liveCounts.wireguard ?? 0)
      if (url === "/ipsec") return formatSidebarBadgeCount(liveCounts.ipsec ?? 0)
      if (url === "/bgp") return formatSidebarBadgeCount(liveCounts.bgpSessions ?? 0)
      if (url === "/vxlan") return formatSidebarBadgeCount(liveCounts.vxlan ?? 0)
      if (url === "/containers") return formatSidebarBadgeCount(liveCounts.containers ?? 0)

      return undefined
    }

    return navigationGroups.map((g) => ({
      label: g.label,
      items: g.items.map((it) => ({
        title: it.title,
        url: it.url,
        icon: React.createElement(it.icon, { "aria-hidden": true }),
        badge: mounted ? badgeFor(it.url) : undefined,
      })),
    }))
  }, [mounted, mode, liveCounts, mockBadges, evo.enabled, evo.snapshot])

  return (
    <Sidebar collapsible="icon" {...props}>
      <SidebarHeader>
        <AppSwitcher />
      </SidebarHeader>
      <SidebarContent>
        <NavMain groups={navGroups} />
      </SidebarContent>
      <SidebarFooter>
        <NavUser />
      </SidebarFooter>
    </Sidebar>
  )
}