import { NavLink } from "react-router-dom";
import {
  LayoutDashboard, Clock, FolderKanban, Coins, CheckSquare, Calculator,
  Wallet, Users, Settings, FolderCog, Inbox, UserCircle, ClipboardList, Database, CalendarDays,
  type LucideIcon,
} from "lucide-react";
import { useQuery } from "@tanstack/react-query";
import { getNav, getApprovals } from "@/lib/api";
import { useAuth } from "@/context/Auth";
import { SpinLogo } from "./SpinLogo";
import { WorkStatusMenu } from "./WorkStatusMenu";
import { classNames } from "@/lib/format";
import type { NavItem } from "@/types";

export const ICONS: Record<string, LucideIcon> = {
  LayoutDashboard, Clock, FolderKanban, Coins, CheckSquare, Calculator, Wallet, Users, Settings, FolderCog,
  Inbox, UserCircle, ClipboardList, Database, CalendarDays,
};

export function Sidebar({ collapsed = false, className }: { collapsed?: boolean; className?: string }) {
  const { isAdmin } = useAuth();
  const navQ = useQuery({ queryKey: ["nav"], queryFn: getNav, staleTime: 5 * 60_000 });
  const apprQ = useQuery({ queryKey: ["approvals-count"], queryFn: getApprovals, enabled: isAdmin, staleTime: 60_000 });
  const approvalCount = (apprQ.data?.leave.length ?? 0) + (apprQ.data?.overtime.length ?? 0);

  const items = navQ.data ?? [];
  const sections = Array.from(new Set(items.map((i) => i.section)));

  return (
    <aside
      className={classNames(
        "shrink-0 bg-navy-sidebar text-white flex flex-col h-screen sticky top-0 transition-[width] duration-200 ease-out",
        collapsed ? "w-[68px]" : "w-60",
        className
      )}
    >
      <div className={classNames("pt-6 pb-4", collapsed ? "px-0 flex justify-center" : "px-5")}>
        <SpinLogo variant="light" markOnly={collapsed} />
      </div>

      {/* 출근/퇴근/휴식/미팅/이동 빠른 상태 설정 (로고 바로 아래) */}
      <div className={classNames("pb-3", collapsed ? "px-2" : "px-5")}>
        <WorkStatusMenu collapsed={collapsed} />
      </div>

      <nav className={classNames("flex-1 overflow-y-auto overflow-x-hidden pb-4", collapsed ? "px-2 space-y-2" : "px-3 space-y-4")}>
        {sections.map((section, si) => (
          <div key={section}>
            {collapsed
              ? si > 0 && <div className="mx-2 my-2 h-px bg-white/10" />
              : <div className="px-3 text-[10px] uppercase tracking-widest text-white/35 mb-1.5">{section}</div>}
            <div className="space-y-0.5">
              {items.filter((i) => i.section === section).map((item: NavItem) => {
                const Icon = ICONS[item.icon] ?? LayoutDashboard;
                return (
                  <NavLink
                    key={item.key}
                    to={item.path}
                    end={item.path === "/"}
                    title={collapsed ? item.label : undefined}
                    className={({ isActive }) =>
                      classNames(
                        "relative flex items-center rounded-control text-sm font-medium transition-colors",
                        collapsed ? "justify-center h-10" : "gap-3 px-3 py-2",
                        isActive ? "bg-white/10 text-white" : "text-white/60 hover:text-white hover:bg-white/5"
                      )
                    }
                  >
                    <Icon size={18} strokeWidth={2} />
                    {!collapsed && <span className="flex-1">{item.label}</span>}
                    {item.key === "approvals" && approvalCount > 0 && (
                      collapsed ? (
                        <span className="absolute top-1.5 right-1.5 w-2 h-2 rounded-full bg-[#C99A2E]" />
                      ) : (
                        <span className="font-num text-[11px] font-bold bg-[#C99A2E] text-[#1A1305] rounded-pill min-w-[20px] h-5 px-1.5 flex items-center justify-center">
                          {approvalCount}
                        </span>
                      )
                    )}
                  </NavLink>
                );
              })}
            </div>
          </div>
        ))}
      </nav>

      {!collapsed && (
        <div className="px-5 py-4 border-t border-white/10 flex flex-col items-center">
          <div className="text-[10px] uppercase tracking-widest text-white/40 mb-2 text-center">Powered by</div>
          {/* Logo sits directly on the rail (sidebar shares the logo's #03143F
              navy), cropped 1px left / 3px bottom and scaled up. Centered. */}
          <div className="overflow-hidden mx-auto" style={{ width: 143, height: 37 }}>
            <img
              src="/special-partners.jpg"
              alt="Special Partners"
              className="block"
              style={{ height: 40, width: "auto", maxWidth: "none", marginLeft: -1 }}
            />
          </div>
        </div>
      )}
    </aside>
  );
}