"use client"

// "Mer"-siden (2026-08-01) -- den femte fanen i den faste bunn-
// navigasjonen (`components/teecup/bottom-nav.tsx`, ADR/V0 2026-08-08)
// trengte et reelt mål, ikke en lenke til en side som ikke fantes.
// Samler destinasjoner som allerede finnes andre steder i appen (header,
// dashbordets organisasjon-fot) på ett sted, i stedet for å bygge noe
// nytt -- en ren navigasjons-samleside.

import { useEffect, useState } from "react"
import { useRouter } from "next/navigation"
import Link from "next/link"
import { Bell, Building2, ChevronRight, CircleHelp, LogOut, MessageSquare, UserCircle, UserPlus } from "lucide-react"
import { BottomNav } from "@/components/teecup/bottom-nav"
import { LanguageSwitcher } from "@/components/language-switcher"

const C = {
  card: "#ffffff",
  ink: "#012c11",
  muted: "#424941",
  border: "#c1c9bf",
  primary: "#1f6b08",
} as const

type MyOrg = { organization_id: string; name: string; role: string }
type Me = { display_name: string; first_name: string | null; organizations: MyOrg[] }

export function MoreMenu() {
  const router = useRouter()
  const [me, setMe] = useState<Me | null>(null)

  useEffect(() => {
    fetch("/auth/me", { credentials: "include" })
      .then((res) => (res.ok ? res.json() : null))
      .then((data: Me | null) => setMe(data))
      .catch(() => {})
  }, [])

  async function handleLogout() {
    try {
      await fetch("/auth/logout", { method: "POST", credentials: "include" })
    } finally {
      router.replace("/logg-inn")
    }
  }

  return (
    <div className="flex min-h-[100dvh] flex-col bg-background">
      <header className="border-b pt-[env(safe-area-inset-top)]" style={{ borderColor: C.border }}>
        <div className="mx-auto w-full max-w-2xl px-5 py-4">
          <h1 className="text-xl font-extrabold tracking-tight" style={{ color: C.ink }}>
            Mer
          </h1>
          {me && (
            <p className="text-sm" style={{ color: C.muted }}>
              Innlogget som {me.first_name ?? me.display_name}
            </p>
          )}
        </div>
      </header>

      <main className="mx-auto w-full max-w-2xl flex-1 px-5 pb-24 pt-4">
        <ul
          className="flex flex-col overflow-hidden rounded-2xl"
          style={{ border: `1px solid ${C.border}`, backgroundColor: C.card }}
        >
          <MenuLink href="/account" icon={UserCircle} label="Konto" />
          <MenuLink href="/my-friends" icon={UserPlus} label="Venner" />
          <MenuLink href="/my-feed" icon={MessageSquare} label="Feed" />
          <MenuLink href="/my-notifications" icon={Bell} label="Varsler" />
          <MenuLink href="/hjelp" icon={CircleHelp} label="Hjelp" last={me?.organizations.length === 0} />
          {me?.organizations.map((o, i) => (
            <MenuLink
              key={o.organization_id}
              href={`/organizations/${o.organization_id}/members?name=${encodeURIComponent(o.name)}`}
              icon={Building2}
              label={o.name}
              last={i === me.organizations.length - 1}
            />
          ))}
        </ul>

        <div className="mt-6 rounded-2xl p-4" style={{ border: `1px solid ${C.border}`, backgroundColor: C.card }}>
          <LanguageSwitcher />
        </div>

        <button
          type="button"
          onClick={handleLogout}
          className="mt-6 flex min-h-[52px] w-full items-center justify-center gap-2 rounded-2xl text-sm font-bold"
          style={{ border: `1px solid ${C.border}`, backgroundColor: C.card, color: C.ink }}
        >
          <LogOut aria-hidden="true" className="size-4" />
          Logg ut
        </button>
      </main>

      <BottomNav />
    </div>
  )
}

function MenuLink({
  href,
  icon: Icon,
  label,
  last,
}: {
  href: string
  icon: typeof Bell
  label: string
  last?: boolean
}) {
  return (
    <li style={last ? undefined : { borderBottom: `1px solid ${C.border}` }}>
      <Link href={href} className="flex min-h-[56px] items-center gap-3 px-4">
        <Icon aria-hidden="true" className="size-5" color={C.primary} />
        <span className="flex-1 truncate text-base font-semibold" style={{ color: C.ink }}>
          {label}
        </span>
        <ChevronRight aria-hidden="true" className="size-5" color={C.muted} />
      </Link>
    </li>
  )
}