import type { ReactNode } from 'react'
import { Link, useLocation } from 'react-router'
import { Bot, Inbox, type LucideIcon, LayoutDashboard, LogOut, Network, ShieldCheck } from 'lucide-react'
import { Button } from '@/components/ui/button'
import { Separator } from '@/components/ui/separator'
import { cn } from '@/lib/utils'
import { useAuth } from '@/store/auth'

export function AppShell({ children }: { children: ReactNode }) {
  const email = useAuth((s) => s.email)
  const logout = useAuth((s) => s.logout)

  return (
    <div className="flex min-h-screen bg-background text-foreground">
      <aside className="flex w-60 shrink-0 flex-col bg-sidebar text-sidebar-foreground">
        <div className="flex items-center gap-3 px-5 py-4">
          <span className="grid size-8 place-items-center rounded-md bg-sidebar-primary font-bold text-sidebar-primary-foreground">
            T
          </span>
          <div className="leading-tight">
            <div className="font-semibold tracking-tight">TeamUp.AI</div>
            <div className="text-xs text-sidebar-foreground/60">command center</div>
          </div>
        </div>

        <Separator className="bg-sidebar-border" />

        <nav className="flex flex-1 flex-col gap-1 p-3">
          <NavItem icon={LayoutDashboard} label="Board" to="/" />
          <NavItem icon={Bot} label="AI seats" to="/seats" />
          <NavItem icon={ShieldCheck} label="Review inbox" to="/reviews" />
          <NavItem icon={Inbox} label="Cartable" muted />
          <NavItem icon={Network} label="Org chart" muted />
        </nav>

        <Separator className="bg-sidebar-border" />

        <div className="flex items-center justify-between gap-2 p-3">
          <span className="truncate text-xs text-sidebar-foreground/70">{email ?? 'signed in'}</span>
          <Button
            variant="ghost"
            size="sm"
            onClick={logout}
            className="text-sidebar-foreground hover:bg-sidebar-accent hover:text-sidebar-accent-foreground"
          >
            <LogOut data-icon="inline-start" />
            Sign out
          </Button>
        </div>
      </aside>

      <main className="flex-1 overflow-auto">{children}</main>
    </div>
  )
}

function NavItem({
  icon: Icon,
  label,
  to,
  muted,
}: {
  icon: LucideIcon
  label: string
  to?: string
  muted?: boolean
}) {
  const location = useLocation()
  const active = to ? location.pathname === to : false

  const className = cn(
    'flex items-center gap-3 rounded-md px-3 py-2 text-sm',
    active ? 'bg-sidebar-accent font-medium text-sidebar-accent-foreground' : 'text-sidebar-foreground/80',
    muted ? 'opacity-50' : 'hover:bg-sidebar-accent/60',
  )

  const content = (
    <>
      <Icon className="size-4" />
      {label}
      {muted && <span className="ml-auto text-[10px] uppercase tracking-wide opacity-70">soon</span>}
    </>
  )

  if (!to || muted) {
    return <span className={className}>{content}</span>
  }

  return (
    <Link to={to} className={className}>
      {content}
    </Link>
  )
}