"use client"

import Link from "next/link"
import { usePathname } from "next/navigation"
import {
  LayoutDashboard,
  Key,
  BookText,
  CreditCard,
  Languages,
  ChevronLeft,
} from "lucide-react"
import { cn } from "@/lib/utils"
import { Avatar, AvatarFallback } from "@/components/ui/avatar"
import { Badge } from "@/components/ui/badge"
import { Separator } from "@/components/ui/separator"
import { Button } from "@/components/ui/button"

const navItems = [
  { label: "Overview", href: "/dashboard", icon: LayoutDashboard },
  { label: "API Keys", href: "/dashboard/api-keys", icon: Key },
  { label: "Glossaries & Context", href: "/dashboard/glossaries", icon: BookText },
  { label: "Billing", href: "/dashboard/billing", icon: CreditCard },
]

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

  return (
    <aside className="hidden w-64 shrink-0 border-r border-border bg-card lg:flex lg:flex-col">
      {/* Brand */}
      <div className="flex h-14 items-center gap-2.5 px-5">
        <div className="flex size-7 items-center justify-center rounded-md bg-foreground">
          <Languages className="size-3.5 text-background" />
        </div>
        <span className="text-sm font-semibold tracking-tight text-foreground">
          Office Translator
        </span>
      </div>

      <Separator />

      {/* Navigation */}
      <nav className="flex flex-1 flex-col gap-1 px-3 py-4">
        {navItems.map((item) => {
          const isActive = pathname === item.href
          return (
            <Link
              key={item.href}
              href={item.href}
              className={cn(
                "flex items-center gap-3 rounded-lg px-3 py-2 text-sm font-medium transition-colors",
                isActive
                  ? "bg-secondary text-foreground"
                  : "text-muted-foreground hover:bg-secondary/60 hover:text-foreground"
              )}
            >
              <item.icon className="size-4 shrink-0" />
              {item.label}
            </Link>
          )
        })}
      </nav>

      <Separator />

      {/* User section */}
      <div className="flex items-center gap-3 px-5 py-4">
        <Avatar className="size-8">
          <AvatarFallback className="bg-accent text-accent-foreground text-xs font-semibold">
            JD
          </AvatarFallback>
        </Avatar>
        <div className="flex flex-col gap-0.5">
          <span className="text-sm font-medium leading-none text-foreground">Jane Doe</span>
          <span className="text-xs leading-none text-muted-foreground">jane@acme.com</span>
        </div>
      </div>

      <Separator />

      {/* Back to homepage */}
      <div className="px-3 py-3">
        <Button variant="ghost" size="sm" className="w-full justify-start gap-2 text-muted-foreground" asChild>
          <Link href="/">
            <ChevronLeft className="size-3.5" />
            Back to home
          </Link>
        </Button>
      </div>
    </aside>
  )
}
