"use client";

import { useState } from "react";
import Link from "next/link";
import { usePathname } from "next/navigation";
import { useSession } from "next-auth/react";
import {
  LayoutDashboard,
  Cylinder,
  Droplets,
  Paintbrush,
  Gem,
  FileBox,
  Send,
  ClipboardList,
  Building2,
  MapPin,
  Settings,
  Flame,
  PanelLeftClose,
  PanelLeft,
} from "lucide-react";
import { cn } from "@/lib/utils";
import { APP_NAME, NAV_ITEMS } from "@/lib/constants";
import { Button } from "@/components/ui/button";
import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";

const icons = {
  LayoutDashboard,
  Cylinder,
  Droplets,
  Paintbrush,
  Gem,
  FileBox,
  Send,
  ClipboardList,
  Building2,
  MapPin,
  Settings,
} as const;

export function Sidebar() {
  const pathname = usePathname();
  const [collapsed, setCollapsed] = useState(false);
  const { data: session } = useSession();
  const isAdmin = session?.user?.role === "ADMIN";

  const visibleItems = NAV_ITEMS.filter((item) => !item.adminOnly || isAdmin);

  return (
    <aside
      className={cn(
        "flex h-screen flex-col border-r border-border bg-card transition-all duration-200",
        collapsed ? "w-16" : "w-60"
      )}
    >
      {/* Logo */}
      <div className="flex h-14 items-center gap-2 border-b border-border px-4">
        <Flame className="h-6 w-6 shrink-0 text-primary" />
        {!collapsed && (
          <span className="text-sm font-bold tracking-tight">{APP_NAME}</span>
        )}
      </div>

      {/* Navigation */}
      <nav className="flex-1 space-y-1 p-2">
        {visibleItems.map((item) => {
          const Icon = icons[item.icon];
          const isActive = pathname.startsWith(item.href);

          const link = (
            <Link
              key={item.href}
              href={item.href}
              className={cn(
                "flex items-center gap-3 rounded-md px-3 py-2 text-sm font-medium transition-colors",
                isActive
                  ? "border-l-2 border-primary bg-primary/10 text-primary"
                  : "text-muted-foreground hover:bg-muted hover:text-foreground"
              )}
            >
              <Icon className="h-4 w-4 shrink-0" />
              {!collapsed && <span>{item.label}</span>}
            </Link>
          );

          if (collapsed) {
            return (
              <Tooltip key={item.href}>
                <TooltipTrigger asChild>{link}</TooltipTrigger>
                <TooltipContent side="right">{item.label}</TooltipContent>
              </Tooltip>
            );
          }

          return link;
        })}
      </nav>

      {/* Collapse toggle */}
      <div className="border-t border-border p-2">
        <Button
          variant="ghost"
          size="sm"
          className="w-full justify-center"
          onClick={() => setCollapsed(!collapsed)}
        >
          {collapsed ? (
            <PanelLeft className="h-4 w-4" />
          ) : (
            <>
              <PanelLeftClose className="h-4 w-4 mr-2" />
              <span className="text-xs">Collapse</span>
            </>
          )}
        </Button>
      </div>
    </aside>
  );
}