"use client"

// Turnering-presentasjon (ADR-018): beskrivelse, synlighet, påmeldings-
// innstillinger, hero-bilde og sponsorer. Backend for alt dette har vært
// klart siden 2026-07-18 -- denne skjermen var det manglende siste steget
// (se FEATURE_BACKLOG.md "Landingssider"-seksjonen, rettet 2026-08-03).
// Delt mellom lag- og individuelle turneringer (samme `tournament`-tabell,
// disse feltene er ikke format_type-spesifikke) -- se tournament-router.tsx
// for hvordan format_type ellers velger skjerm.

import type React from "react"
import { useEffect, useRef, useState } from "react"
import Link from "next/link"
import {
  ArrowLeft,
  Camera,
  Check,
  Copy,
  ExternalLink,
  Globe,
  Lock,
  Plus,
  Trash2,
  Users,
  X,
} from "lucide-react"
import { Button } from "@/components/ui/button"
import { Input } from "@/components/ui/input"
import { Label } from "@/components/ui/label"
import { Switch } from "@/components/ui/switch"
import { cn } from "@/lib/utils"

type Visibility = "public" | "org" | "participants"
type OverflowPolicy = "waitlist" | "closed"

type ApiTournament = {
  id: string
  visibility: Visibility
  description: string | null
  registration_deadline: string | null
  registration_capacity: number | null
  registration_overflow_policy: OverflowPolicy
  registration_requires_approval: boolean
  hero_image_url: string | null
}

type ApiSponsor = {
  id: string
  name: string
  url: string | null
  logo_url: string | null
}

const VISIBILITY_OPTIONS: { value: Visibility; label: string; hint: string; icon: typeof Globe }[] = [
  { value: "public", label: "Offentlig", hint: "Alle kan se siden, uten innlogging.", icon: Globe },
  { value: "org", label: "Kun org", hint: "Kun medlemmer av klubben.", icon: Users },
  { value: "participants", label: "Kun deltakere", hint: "Kun rostrede/registrerte spillere.", icon: Lock },
]

function isoToLocalInputValue(iso: string | null): string {
  if (!iso) return ""
  const d = new Date(iso)
  if (Number.isNaN(d.getTime())) return ""
  const pad = (n: number) => String(n).padStart(2, "0")
  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())}T${pad(d.getHours())}:${pad(d.getMinutes())}`
}

function localInputValueToIso(value: string): string | null {
  if (!value.trim()) return null
  const d = new Date(value)
  return Number.isNaN(d.getTime()) ? null : d.toISOString()
}

// Innholdet uten header/fanerad -- egen eksport slik at
// individual-tournament-detail.tsx (som har sitt eget in-page fanesystem,
// ikke egne ruter som lagturneringene) kan bygge den inn som en fjerde fane
// uten å duplisere en header. TournamentPresentation under (full side, egen
// rute) er kun en tynn header+nav-innpakning rundt denne.
export function TournamentPresentationPanel({
  organizationId,
  tournamentId,
}: {
  organizationId: string
  tournamentId: string
}) {
  const [tournament, setTournament] = useState<ApiTournament | null>(null)
  const [sponsors, setSponsors] = useState<ApiSponsor[]>([])
  const [loading, setLoading] = useState(true)
  const [loadError, setLoadError] = useState<string | null>(null)

  // Skjema-lokal tilstand, seedet fra `tournament` ved (ny) lasting.
  const [description, setDescription] = useState("")
  const [visibility, setVisibility] = useState<Visibility>("org")
  const [requiresApproval, setRequiresApproval] = useState(false)
  const [overflowPolicy, setOverflowPolicy] = useState<OverflowPolicy>("waitlist")
  const [capacity, setCapacity] = useState("")
  const [deadline, setDeadline] = useState("")

  const [saving, setSaving] = useState(false)
  const [saved, setSaved] = useState(false)
  const [saveError, setSaveError] = useState<string | null>(null)

  const [uploadingHero, setUploadingHero] = useState(false)
  const heroInputRef = useRef<HTMLInputElement>(null)

  const [sponsorName, setSponsorName] = useState("")
  const [sponsorUrl, setSponsorUrl] = useState("")
  const [addingSponsor, setAddingSponsor] = useState(false)

  // Kopier-lenke (2026-08-21) -- fant reell forvirring: organisator delte
  // sin egen administrator-URL (/tournaments/{id}?org=...) i stedet for
  // denne, siden lenken under kun var ren, ikke-kopierbar tekst. Samme
  // kopier-mønster som JoinCodeChip i individual-tournament-detail.tsx.
  const [linkCopied, setLinkCopied] = useState(false)
  async function copyPublicLink() {
    try {
      await navigator.clipboard.writeText(`${window.location.origin}/t/${tournamentId}`)
      setLinkCopied(true)
      setTimeout(() => setLinkCopied(false), 1500)
    } catch {
      // stille -- ikke kritisk
    }
  }
  const [sponsorError, setSponsorError] = useState<string | null>(null)
  const [logoTargetId, setLogoTargetId] = useState<string | null>(null)
  const [uploadingLogoFor, setUploadingLogoFor] = useState<string | null>(null)
  const sponsorLogoInputRef = useRef<HTMLInputElement>(null)

  useEffect(() => {
    let cancelled = false
    async function load() {
      try {
        const [tournamentsRes, sponsorsRes] = await Promise.all([
          fetch(`/orgs/${organizationId}/tournaments`, { credentials: "include" }),
          fetch(`/orgs/${organizationId}/tournaments/${tournamentId}/sponsors`, { credentials: "include" }),
        ])
        if (!tournamentsRes.ok) throw new Error("load failed")
        const list: ApiTournament[] = await tournamentsRes.json()
        const mine = list.find((t) => t.id === tournamentId)
        if (!mine) throw new Error("not found")
        if (cancelled) return
        setTournament(mine)
        setDescription(mine.description ?? "")
        setVisibility(mine.visibility)
        setRequiresApproval(mine.registration_requires_approval)
        setOverflowPolicy(mine.registration_overflow_policy)
        setCapacity(mine.registration_capacity != null ? String(mine.registration_capacity) : "")
        setDeadline(isoToLocalInputValue(mine.registration_deadline))
        if (sponsorsRes.ok) setSponsors(await sponsorsRes.json())
      } catch {
        if (!cancelled) setLoadError("Klarte ikke å laste turnering-presentasjonen. Prøv å laste siden på nytt.")
      } finally {
        if (!cancelled) setLoading(false)
      }
    }
    void load()
    return () => {
      cancelled = true
    }
  }, [organizationId, tournamentId])

  async function handleSave() {
    setSaving(true)
    setSaveError(null)
    setSaved(false)
    try {
      const res = await fetch(`/orgs/${organizationId}/tournaments/${tournamentId}`, {
        method: "PATCH",
        headers: { "Content-Type": "application/json" },
        credentials: "include",
        body: JSON.stringify({
          description: description.trim() === "" ? null : description.trim(),
          visibility,
          registration_requires_approval: requiresApproval,
          registration_overflow_policy: overflowPolicy,
          registration_capacity: capacity.trim() === "" ? null : Number.parseInt(capacity, 10),
          registration_deadline: localInputValueToIso(deadline),
        }),
      })
      if (!res.ok) {
        const body = await res.json().catch(() => null)
        throw new Error(body?.detail?.message ?? "Klarte ikke å lagre.")
      }
      const updated: ApiTournament = await res.json()
      setTournament(updated)
      setSaved(true)
    } catch (err) {
      setSaveError(err instanceof Error ? err.message : "Klarte ikke å lagre. Prøv igjen.")
    } finally {
      setSaving(false)
    }
  }

  async function handleHeroSelected(e: React.ChangeEvent<HTMLInputElement>) {
    const file = e.target.files?.[0]
    if (!file) return
    setUploadingHero(true)
    setSaveError(null)
    try {
      const formData = new FormData()
      formData.append("file", file)
      const res = await fetch(`/orgs/${organizationId}/tournaments/${tournamentId}/hero-image`, {
        method: "POST",
        credentials: "include",
        body: formData,
      })
      if (!res.ok) throw new Error("Klarte ikke å laste opp bildet.")
      const updated: ApiTournament = await res.json()
      setTournament(updated)
    } catch (err) {
      setSaveError(err instanceof Error ? err.message : "Klarte ikke å laste opp bildet.")
    } finally {
      setUploadingHero(false)
      if (heroInputRef.current) heroInputRef.current.value = ""
    }
  }

  async function handleRemoveHero() {
    setUploadingHero(true)
    try {
      const res = await fetch(`/orgs/${organizationId}/tournaments/${tournamentId}/hero-image`, {
        method: "DELETE",
        credentials: "include",
      })
      if (res.ok) setTournament(await res.json())
    } finally {
      setUploadingHero(false)
    }
  }

  async function handleAddSponsor(e: React.FormEvent) {
    e.preventDefault()
    if (sponsorName.trim() === "") return
    setAddingSponsor(true)
    setSponsorError(null)
    try {
      const res = await fetch(`/orgs/${organizationId}/tournaments/${tournamentId}/sponsors`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        credentials: "include",
        body: JSON.stringify({ name: sponsorName.trim(), url: sponsorUrl.trim() === "" ? null : sponsorUrl.trim() }),
      })
      if (!res.ok) throw new Error("Klarte ikke å legge til sponsoren.")
      const created: ApiSponsor = await res.json()
      setSponsors((prev) => [...prev, created])
      setSponsorName("")
      setSponsorUrl("")
    } catch (err) {
      setSponsorError(err instanceof Error ? err.message : "Klarte ikke å legge til sponsoren.")
    } finally {
      setAddingSponsor(false)
    }
  }

  async function handleDeleteSponsor(sponsorId: string) {
    setSponsorError(null)
    try {
      const res = await fetch(`/orgs/${organizationId}/tournaments/${tournamentId}/sponsors/${sponsorId}`, {
        method: "DELETE",
        credentials: "include",
      })
      if (res.status !== 204) throw new Error("Klarte ikke å fjerne sponsoren.")
      setSponsors((prev) => prev.filter((s) => s.id !== sponsorId))
    } catch (err) {
      setSponsorError(err instanceof Error ? err.message : "Klarte ikke å fjerne sponsoren.")
    }
  }

  function triggerLogoUpload(sponsorId: string) {
    setLogoTargetId(sponsorId)
    sponsorLogoInputRef.current?.click()
  }

  async function handleLogoSelected(e: React.ChangeEvent<HTMLInputElement>) {
    const file = e.target.files?.[0]
    const sponsorId = logoTargetId
    if (!file || !sponsorId) return
    setUploadingLogoFor(sponsorId)
    setSponsorError(null)
    try {
      const formData = new FormData()
      formData.append("file", file)
      const res = await fetch(
        `/orgs/${organizationId}/tournaments/${tournamentId}/sponsors/${sponsorId}/logo`,
        { method: "POST", credentials: "include", body: formData },
      )
      if (!res.ok) throw new Error("Klarte ikke å laste opp logoen.")
      const updated: ApiSponsor = await res.json()
      setSponsors((prev) => prev.map((s) => (s.id === updated.id ? updated : s)))
    } catch (err) {
      setSponsorError(err instanceof Error ? err.message : "Klarte ikke å laste opp logoen.")
    } finally {
      setUploadingLogoFor(null)
      setLogoTargetId(null)
      if (sponsorLogoInputRef.current) sponsorLogoInputRef.current.value = ""
    }
  }

  return (
    <div className="flex flex-col gap-1">
      <div className="mb-4 flex flex-col gap-2">
        <p className="text-sm leading-relaxed text-muted-foreground text-pretty">
          Hvordan turneringen vises på sin offentlige side (
          <Link
            href={`/t/${tournamentId}`}
            target="_blank"
            className="underline underline-offset-2 hover:text-foreground"
          >
            /t/{tournamentId}
            <ExternalLink aria-hidden="true" className="ml-1 inline size-3" />
          </Link>
          ) og klubbsiden.
        </p>
        <button
          type="button"
          onClick={copyPublicLink}
          className="inline-flex min-h-11 w-fit items-center gap-1.5 rounded-xl border border-border bg-card px-3 py-2 text-sm font-bold text-foreground transition-colors hover:bg-accent/50"
        >
          {linkCopied ? (
            <Check aria-hidden="true" className="size-4 text-primary" />
          ) : (
            <Copy aria-hidden="true" className="size-4 text-muted-foreground" />
          )}
          {linkCopied ? "Kopiert!" : "Kopier offentlig lenke"}
        </button>
      </div>

      <div className="flex flex-col gap-4">
        {loadError && (
          <p role="alert" className="mb-4 text-sm font-medium text-destructive">
            {loadError}
          </p>
        )}

        {loading ? (
          <div className="flex justify-center py-16">
            <div
              aria-hidden="true"
              className="size-10 animate-spin rounded-full border-4 border-primary/20 border-t-primary"
            />
          </div>
        ) : tournament ? (
          <div className="flex flex-col gap-4">
            {/* --- Hero-bilde ------------------------------------------------ */}
            <section className="flex flex-col gap-4 rounded-3xl border border-border bg-card p-5 shadow-md shadow-black/8 sm:p-6">
              <h3 className="text-sm font-bold text-foreground">Hero-bilde</h3>
              <div className="flex items-center gap-4">
                <div className="relative flex h-20 w-32 shrink-0 items-center justify-center overflow-hidden rounded-2xl bg-secondary">
                  {tournament.hero_image_url ? (
                    // eslint-disable-next-line @next/next/no-img-element
                    <img src={tournament.hero_image_url} alt="" className="size-full object-cover" />
                  ) : (
                    <Camera aria-hidden="true" className="size-6 text-muted-foreground" />
                  )}
                </div>
                <div className="flex flex-col gap-1.5">
                  <input
                    ref={heroInputRef}
                    type="file"
                    // "image/*" -- mange mobilnettlesere viser bare
                    // galleri, ikke kamera, med en eksplisitt MIME-liste.
                    accept="image/*"
                    className="hidden"
                    onChange={handleHeroSelected}
                  />
                  <Button
                    type="button"
                    variant="outline"
                    size="sm"
                    disabled={uploadingHero}
                    onClick={() => heroInputRef.current?.click()}
                    className="h-11 rounded-xl font-semibold"
                  >
                    <Camera aria-hidden="true" className="size-4" />
                    {tournament.hero_image_url ? "Bytt bilde" : "Last opp bilde"}
                  </Button>
                  {tournament.hero_image_url && (
                    <button
                      type="button"
                      onClick={handleRemoveHero}
                      disabled={uploadingHero}
                      className="inline-flex w-fit items-center gap-1 text-xs font-semibold text-muted-foreground transition-colors hover:text-destructive"
                    >
                      <X aria-hidden="true" className="size-3" />
                      Fjern bilde
                    </button>
                  )}
                </div>
              </div>
            </section>

            {/* --- Beskrivelse & synlighet ------------------------------------ */}
            <section className="flex flex-col gap-4 rounded-3xl border border-border bg-card p-5 shadow-md shadow-black/8 sm:p-6">
              <h3 className="text-sm font-bold text-foreground">Beskrivelse og synlighet</h3>

              <div className="flex flex-col gap-1.5">
                <Label htmlFor="tournament-description">Beskrivelse</Label>
                <textarea
                  id="tournament-description"
                  value={description}
                  onChange={(e) => setDescription(e.target.value)}
                  rows={4}
                  placeholder="Fortell spillere og besøkende hva turneringen handler om…"
                  className="w-full rounded-xl border border-input bg-transparent px-3 py-2.5 text-sm leading-relaxed text-foreground outline-none placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
                />
              </div>

              <div className="flex flex-col gap-1.5">
                <Label>Hvem kan se siden</Label>
                <div className="grid grid-cols-1 gap-2 sm:grid-cols-3">
                  {VISIBILITY_OPTIONS.map((opt) => {
                    const Icon = opt.icon
                    const selected = visibility === opt.value
                    return (
                      <button
                        key={opt.value}
                        type="button"
                        onClick={() => setVisibility(opt.value)}
                        aria-pressed={selected}
                        className={cn(
                          "flex min-h-11 flex-col items-start gap-1 rounded-2xl border px-3 py-3 text-left transition-colors",
                          selected
                            ? "border-primary bg-primary/10 text-foreground"
                            : "border-border bg-card text-muted-foreground hover:bg-accent/50 hover:text-foreground",
                        )}
                      >
                        <span className="flex items-center gap-1.5 text-sm font-semibold">
                          <Icon aria-hidden="true" className="size-4" />
                          {opt.label}
                        </span>
                        <span className="text-xs leading-snug text-muted-foreground text-pretty">{opt.hint}</span>
                      </button>
                    )
                  })}
                </div>
              </div>
            </section>

            {/* --- Påmelding --------------------------------------------------- */}
            <section className="flex flex-col gap-4 rounded-3xl border border-border bg-card p-5 shadow-md shadow-black/8 sm:p-6">
              <h3 className="text-sm font-bold text-foreground">Påmelding</h3>

              <div className="flex items-center justify-between gap-4 border-b border-border py-1 last:border-b-0">
                <span className="text-sm font-medium text-foreground text-pretty">
                  Krev godkjenning før bekreftet plass
                </span>
                <Switch checked={requiresApproval} onCheckedChange={setRequiresApproval} />
              </div>

              <div className="flex flex-col gap-1.5">
                <Label>Når plassene tar slutt</Label>
                <div className="grid grid-cols-2 gap-2">
                  <button
                    type="button"
                    onClick={() => setOverflowPolicy("waitlist")}
                    aria-pressed={overflowPolicy === "waitlist"}
                    className={cn(
                      "flex min-h-11 items-center justify-center rounded-2xl border px-3 py-3 text-sm font-semibold transition-colors",
                      overflowPolicy === "waitlist"
                        ? "border-primary bg-primary/10 text-foreground"
                        : "border-border bg-card text-muted-foreground hover:bg-accent/50 hover:text-foreground",
                    )}
                  >
                    Sett på venteliste
                  </button>
                  <button
                    type="button"
                    onClick={() => setOverflowPolicy("closed")}
                    aria-pressed={overflowPolicy === "closed"}
                    className={cn(
                      "flex min-h-11 items-center justify-center rounded-2xl border px-3 py-3 text-sm font-semibold transition-colors",
                      overflowPolicy === "closed"
                        ? "border-primary bg-primary/10 text-foreground"
                        : "border-border bg-card text-muted-foreground hover:bg-accent/50 hover:text-foreground",
                    )}
                  >
                    Steng påmelding
                  </button>
                </div>
              </div>

              <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                <div className="flex flex-col gap-1.5">
                  <Label htmlFor="tournament-capacity">Maks antall påmeldte (valgfritt)</Label>
                  <Input
                    id="tournament-capacity"
                    type="number"
                    min={1}
                    inputMode="numeric"
                    value={capacity}
                    onChange={(e) => setCapacity(e.target.value)}
                    placeholder="Ingen grense"
                    className="h-11"
                  />
                </div>
                <div className="flex flex-col gap-1.5">
                  <Label htmlFor="tournament-deadline">Påmeldingsfrist (valgfritt)</Label>
                  <Input
                    id="tournament-deadline"
                    type="datetime-local"
                    value={deadline}
                    onChange={(e) => setDeadline(e.target.value)}
                    className="h-11"
                  />
                </div>
              </div>
            </section>

            {saveError && (
              <p role="alert" className="text-sm font-medium text-destructive">
                {saveError}
              </p>
            )}

            <div className="flex items-center gap-3">
              <Button
                type="button"
                onClick={handleSave}
                disabled={saving}
                className="h-11 rounded-xl px-6 font-semibold"
              >
                {saving ? "Lagrer…" : "Lagre endringer"}
              </Button>
              {saved && !saving && (
                <span className="flex items-center gap-1 text-sm font-semibold text-primary">
                  <Check aria-hidden="true" className="size-4" />
                  Lagret
                </span>
              )}
            </div>

            {/* --- Sponsorer ----------------------------------------------------- */}
            <section className="flex flex-col gap-4 rounded-3xl border border-border bg-card p-5 shadow-md shadow-black/8 sm:p-6">
              <h3 className="text-sm font-bold text-foreground">Sponsorer</h3>

              <input
                ref={sponsorLogoInputRef}
                type="file"
                accept="image/jpeg,image/png,image/webp,image/gif"
                className="hidden"
                onChange={handleLogoSelected}
              />

              {sponsors.length > 0 && (
                <ul className="flex flex-col divide-y divide-border rounded-2xl border border-border">
                  {sponsors.map((sp) => (
                    <li key={sp.id} className="flex flex-col gap-2 px-3 py-3 sm:flex-row sm:items-center">
                      <div className="flex min-w-0 flex-1 items-center gap-3">
                        <div className="flex size-11 shrink-0 items-center justify-center overflow-hidden rounded-xl bg-secondary">
                          {sp.logo_url ? (
                            // eslint-disable-next-line @next/next/no-img-element
                            <img src={sp.logo_url} alt="" className="size-full object-contain" />
                          ) : (
                            <Camera aria-hidden="true" className="size-4 text-muted-foreground" />
                          )}
                        </div>
                        <div className="flex min-w-0 flex-1 flex-col">
                          <span className="truncate text-sm font-semibold text-foreground">{sp.name}</span>
                          {sp.url && (
                            <span className="truncate text-xs text-muted-foreground">{sp.url}</span>
                          )}
                        </div>
                      </div>
                      <div className="flex shrink-0 items-center justify-end gap-1">
                        <button
                          type="button"
                          onClick={() => triggerLogoUpload(sp.id)}
                          disabled={uploadingLogoFor === sp.id}
                          className="flex h-11 shrink-0 items-center gap-1 rounded-xl px-3 text-xs font-semibold text-muted-foreground transition-colors hover:bg-accent/60 hover:text-foreground"
                        >
                          <Camera aria-hidden="true" className="size-3.5" />
                          {sp.logo_url ? "Bytt logo" : "Last opp logo"}
                        </button>
                        <button
                          type="button"
                          onClick={() => handleDeleteSponsor(sp.id)}
                          aria-label={`Fjern ${sp.name}`}
                          className="flex size-11 shrink-0 items-center justify-center rounded-xl text-muted-foreground transition-colors hover:bg-destructive/10 hover:text-destructive"
                        >
                          <Trash2 aria-hidden="true" className="size-4" />
                        </button>
                      </div>
                    </li>
                  ))}
                </ul>
              )}

              {sponsorError && (
                <p role="alert" className="text-sm font-medium text-destructive">
                  {sponsorError}
                </p>
              )}

              <form onSubmit={handleAddSponsor} className="flex flex-col gap-2 sm:flex-row sm:items-end">
                <div className="flex flex-1 flex-col gap-1.5">
                  <Label htmlFor="sponsor-name">Sponsornavn</Label>
                  <Input
                    id="sponsor-name"
                    value={sponsorName}
                    onChange={(e) => setSponsorName(e.target.value)}
                    placeholder="F.eks. Tjøme Rørlegger AS"
                    className="h-11"
                  />
                </div>
                <div className="flex flex-1 flex-col gap-1.5">
                  <Label htmlFor="sponsor-url">Lenke (valgfritt)</Label>
                  <Input
                    id="sponsor-url"
                    value={sponsorUrl}
                    onChange={(e) => setSponsorUrl(e.target.value)}
                    placeholder="https://…"
                    className="h-11"
                  />
                </div>
                <Button
                  type="submit"
                  variant="outline"
                  disabled={addingSponsor || sponsorName.trim() === ""}
                  className="h-11 shrink-0 rounded-xl font-semibold"
                >
                  <Plus aria-hidden="true" className="size-4" />
                  Legg til
                </Button>
              </form>
            </section>
          </div>
        ) : null}
      </div>
    </div>
  )
}

// Full side (egen rute, `/tournaments/[id]/presentation`) -- header+fanerad
// rundt panelet over, samme mønster som tournament-detail.tsx/
// tournament-program.tsx/tournament-leaderboard.tsx sine respektive header-
// blokker (duplisert der også, ikke en delt komponent -- se CHANGELOG.md
// 2026-08-02 for et tidligere funnet eksempel på nettopp denne dupliseringen
// som årsak til en bug reparert flere steder).
export function TournamentPresentation({
  organizationId,
  tournamentId,
  tournamentName,
}: {
  organizationId: string
  tournamentId: string
  tournamentName: string
}) {
  const detailHref = `/tournaments/${tournamentId}?org=${organizationId}&name=${encodeURIComponent(tournamentName)}`
  const programHref = `/tournaments/${tournamentId}/program?org=${organizationId}&name=${encodeURIComponent(tournamentName)}`
  const leaderboardHref = `/tournaments/${tournamentId}/leaderboard?org=${organizationId}&name=${encodeURIComponent(tournamentName)}`

  return (
    <div className="flex min-h-[100dvh] flex-col bg-background">
      <header className="sticky top-0 z-10 border-b border-border bg-background/80 backdrop-blur">
        <div className="mx-auto flex w-full max-w-4xl items-center gap-3 px-5 py-4">
          <Link
            href={detailHref}
            aria-label="Tilbake til turnering"
            className="flex size-10 shrink-0 items-center justify-center rounded-xl border border-border bg-card text-muted-foreground transition-colors hover:bg-accent/50 hover:text-foreground"
          >
            <ArrowLeft aria-hidden="true" className="size-5" />
          </Link>
          <div className="flex min-w-0 flex-col">
            <span className="text-xs font-semibold uppercase tracking-wide text-muted-foreground">
              Turnering
            </span>
            <h1 className="truncate text-xl font-extrabold tracking-tight text-foreground">
              {tournamentName}
            </h1>
          </div>
        </div>

        <nav
          className="mx-auto flex w-full max-w-4xl items-center gap-2 overflow-x-auto px-5 pb-3"
          aria-label="Turneringsseksjoner"
        >
          <Link
            href={detailHref}
            className="shrink-0 rounded-full px-4 py-2 text-sm font-semibold text-muted-foreground transition-colors hover:bg-accent/60 hover:text-foreground"
          >
            Lag og spillere
          </Link>
          <Link
            href={programHref}
            className="shrink-0 rounded-full px-4 py-2 text-sm font-semibold text-muted-foreground transition-colors hover:bg-accent/60 hover:text-foreground"
          >
            Program
          </Link>
          <Link
            href={leaderboardHref}
            className="shrink-0 rounded-full px-4 py-2 text-sm font-semibold text-muted-foreground transition-colors hover:bg-accent/60 hover:text-foreground"
          >
            Leaderboard
          </Link>
          <span
            aria-current="page"
            className="shrink-0 rounded-full bg-primary px-4 py-2 text-sm font-bold text-primary-foreground"
          >
            Presentasjon
          </span>
        </nav>
      </header>

      <main className="mx-auto w-full max-w-4xl flex-1 px-5 py-6 sm:py-8">
        <h2 className="mb-1 text-base font-bold text-foreground">Presentasjon</h2>
        <TournamentPresentationPanel organizationId={organizationId} tournamentId={tournamentId} />
      </main>
    </div>
  )
}