'use client'

import { usePathname } from 'next/navigation'
import { useEffect, useState } from 'react'
import { authFetch, getApiBase, getToken } from '../lib/auth'

type NavigationItem = {
  href: string
  label: string
  shortLabel: string
  icon: 'dashboard' | 'media' | 'issues' | 'invites' | 'settings' | 'stats'
  adminOnly?: boolean
  match: (path: string) => boolean
}

const NAVIGATION: NavigationItem[] = [
  { href: '/insights', label: 'My Stats', shortLabel: 'Stats', icon: 'stats', match: (path) => path === '/insights' },
  { href: '/', label: 'My Requests', shortLabel: 'Requests', icon: 'dashboard', match: (path) => path === '/' || path.startsWith('/requests/') },
  { href: '/new-requests', label: 'New Request', shortLabel: 'New', icon: 'media', match: (path) => path === '/new-requests' },
  { href: '/portal/issues', label: 'Issues', shortLabel: 'Issues', icon: 'issues', match: (path) => path.startsWith('/portal/issues') },
  { href: '/profile/invites', label: 'Invites', shortLabel: 'Invites', icon: 'invites', match: (path) => path.startsWith('/profile/invites') },
  { href: '/admin', label: 'Configuration', shortLabel: 'Config', icon: 'settings', adminOnly: true, match: (path) => path.startsWith('/admin') || path.startsWith('/users') },
]

const HIDDEN_ROUTES = ['/login', '/signup', '/forgot-password', '/reset-password', '/how-it-works']

function NavigationIcon({ name }: { name: NavigationItem['icon'] }) {
  const paths: Record<NavigationItem['icon'], React.ReactNode> = {
    stats: <><path d="M4 20h16M6 16v-5m6 5V4m6 12V8" /></>,
    dashboard: <><rect x="3" y="3" width="7" height="7" rx="1" /><rect x="14" y="3" width="7" height="7" rx="1" /><rect x="3" y="14" width="7" height="7" rx="1" /><rect x="14" y="14" width="7" height="7" rx="1" /></>,
    media: <><rect x="3" y="5" width="18" height="15" rx="2" /><path d="m8 3 2 4m4-4 2 4M3 10h18" /><path d="m10 13 5 3-5 3z" /></>,
    issues: <><path d="M12 3 2.8 19h18.4L12 3Z" /><path d="M12 9v4m0 3h.01" /></>,
    invites: <><circle cx="9" cy="8" r="3" /><path d="M3.5 20v-2.2A4.8 4.8 0 0 1 8.3 13h1.4a4.8 4.8 0 0 1 3.8 1.9M17 8v6m-3-3h6" /></>,
    settings: <><circle cx="12" cy="12" r="3" /><path d="M19.4 15a1.7 1.7 0 0 0 .3 1.9l.1.1-2.8 2.8-.1-.1a1.7 1.7 0 0 0-1.9-.3 1.7 1.7 0 0 0-1 1.6v.2h-4V21a1.7 1.7 0 0 0-1-1.6 1.7 1.7 0 0 0-1.9.3l-.1.1L4.2 17l.1-.1a1.7 1.7 0 0 0 .3-1.9A1.7 1.7 0 0 0 3 14H2.8v-4H3a1.7 1.7 0 0 0 1.6-1 1.7 1.7 0 0 0-.3-1.9L4.2 7 7 4.2l.1.1a1.7 1.7 0 0 0 1.9.3A1.7 1.7 0 0 0 10 3V2.8h4V3a1.7 1.7 0 0 0 1 1.6 1.7 1.7 0 0 0 1.9-.3l.1-.1L19.8 7l-.1.1a1.7 1.7 0 0 0-.3 1.9 1.7 1.7 0 0 0 1.6 1h.2v4H21a1.7 1.7 0 0 0-1.6 1Z" /></>,
  }
  return <svg viewBox="0 0 24 24" aria-hidden="true">{paths[name]}</svg>
}

export default function WorkspaceNavigation() {
  const pathname = usePathname()
  const [role, setRole] = useState<string | null>(null)
  const [ready, setReady] = useState(false)
  const [showRequestsNav, setShowRequestsNav] = useState(true)

  useEffect(() => {
    const token = getToken()
    if (!token) {
      setReady(true)
      return
    }
    Promise.all([
      authFetch(`${getApiBase()}/auth/me`),
      fetch(`${getApiBase()}/site/public`).catch(() => null),
    ])
      .then(async ([response, siteResponse]) => {
        if (response.ok) setRole((await response.json())?.role ?? 'user')
        if (siteResponse?.ok) setShowRequestsNav((await siteResponse.json())?.navigation?.showRequests !== false)
      })
      .catch(() => undefined)
      .finally(() => setReady(true))
  }, [])

  if (!ready || !getToken() || HIDDEN_ROUTES.some((route) => pathname.startsWith(route))) {
    return null
  }

  const items = NAVIGATION.filter((item) => (!item.adminOnly || role === 'admin') && (showRequestsNav || item.href !== '/new-requests'))

  return (
    <>
      <nav className="workspace-mobile-nav" aria-label="Mobile navigation">
        {items.map((item) => (
          <a key={item.href} href={item.href} className={item.match(pathname) ? 'is-active' : undefined}>
            <NavigationIcon name={item.icon} /><span>{item.shortLabel}</span>
          </a>
        ))}
      </nav>
    </>
  )
}