"use client"

import Link from "next/link"
import { usePathname } from "next/navigation"
import {
  LayoutDashboard,
  Users,
  Activity,
  Settings,
  Languages,
  ChevronLeft,
  Shield,
} from "lucide-react"
import { cn } from "@/lib/utils"
import { Badge } from "@/components/ui/badge"
import { Separator } from "@/components/ui/separator"
import { Button } from "@/components/ui/button"

const navItems = [
  { label: "System Overview", href: "/admin", icon: LayoutDashboard },
  { label: "User Management", href: "/admin", icon: Users },
  { label: "Provider Status", href: "/admin", icon: Activity },
  { label: "Settings", href: "/admin/settings", icon: Settings },
]

export function AdminSidebar() {
  const pathname = usePathname()

  return (
    <aside className="hidden w-56 shrink-0 border-r border-border bg-card lg:flex lg:flex-col">
      {/* Brand */}
      <div className="flex h-12 items-center gap-2 px-4">
        <div className="flex size-6 items-center justify-center rounded-md bg-foreground">
          <Languages className="size-3 text-background" />
        </div>
        <span className="text-xs font-semibold tracking-tight text-foreground">
          Office Translator
        </span>
        <Badge
          variant="outline"
          className="ml-auto px-1.5 py-0 text-[10px] font-medium text-muted-foreground"
        >
          Admin
        </Badge>
      </div>

      <Separator />

      {/* Navigation */}
      <nav className="flex flex-1 flex-col gap-0.5 px-2 py-3">
        {navItems.map((item) => {
          const isActive = pathname === item.href
          return (
            <Link
              key={item.label}
              href={item.href}
              className={cn(
                "flex items-center gap-2.5 rounded-md px-2.5 py-1.5 text-xs font-medium transition-colors",
                isActive
                  ? "bg-secondary text-foreground"
                  : "text-muted-foreground hover:bg-secondary/60 hover:text-foreground"
              )}
            >
              <item.icon className="size-3.5 shrink-0" />
              {item.label}
            </Link>
          )
        })}
      </nav>

      <Separator />

      {/* Footer */}
      <div className="flex flex-col gap-1 px-2 py-2">
        <div className="flex items-center gap-2 px-2.5 py-1">
          <Shield className="size-3 text-muted-foreground" />
          <span className="text-[10px] text-muted-foreground">Superadmin access</span>
        </div>
        <Button
          variant="ghost"
          size="sm"
          className="h-7 justify-start gap-2 text-xs text-muted-foreground"
          asChild
        >
          <Link href="/dashboard">
            <ChevronLeft className="size-3" />
            User Dashboard
          </Link>
        </Button>
      </div>
    </aside>
  )
}