amazon-transcreation/frontend/src/components/layout/Sidebar.tsx

"use client";

import React, { useState, useEffect } from "react";
import Link from "next/link";
import Image from "next/image";
import { usePathname, useSearchParams, useRouter } from "next/navigation";
import {
  LayoutDashboard,
  PlusCircle,
  Activity,
  Database,
  BookOpen,
  Building2,
  BarChart3,
  ScrollText,
  Users,
  Terminal,
  HelpCircle,
  LogOut,
  Menu,
  X,
} from "lucide-react";
import { cn, getInitials } from "@/lib/utils";
import { getUser, clearAuth, getRoleDisplayName } from "@/lib/auth";

interface NavItem {
  label: string;
  href: string;
  icon: React.ElementType;
  adminOnly?: boolean;
}

const navItems: NavItem[] = [
  { label: "Dashboard", href: "/dashboard", icon: LayoutDashboard },
  { label: "New Job", href: "/jobs/new", icon: PlusCircle },
  { label: "Monitoring", href: "/dashboard?view=monitoring", icon: Activity },
  { label: "TM Registry", href: "/admin/files/tm", icon: Database },
  { label: "Reference Library", href: "/admin/files/reference", icon: BookOpen },
  { label: "Clients & Voice", href: "/admin/clients", icon: Building2 },
  { label: "Analytics", href: "/admin/reports", icon: BarChart3 },
  { label: "Audit Trail", href: "/admin/logs", icon: ScrollText },
  { label: "User Management", href: "/admin/users", icon: Users, adminOnly: true },
  { label: "System Logs", href: "/admin/logs?type=system", icon: Terminal, adminOnly: true },
  { label: "Help", href: "/help", icon: HelpCircle },
];

export function Sidebar() {
  const pathname = usePathname();
  const searchParams = useSearchParams();
  const router = useRouter();
  const [mobileOpen, setMobileOpen] = useState(false);
  const [currentUser, setCurrentUser] = useState<{
    name: string;
    role: string;
    email: string;
  } | null>(null);

  useEffect(() => {
    const stored = getUser();
    if (stored) {
      setCurrentUser({ name: stored.name, role: stored.role, email: stored.email });
    }
  }, []);

  const handleLogout = () => {
    clearAuth();
    router.push("/login");
  };

  const isAdmin = currentUser?.role === "ADMIN";

  const visibleNavItems = navItems.filter(
    (item) => !item.adminOnly || isAdmin
  );

  const isActive = (href: string) => {
    const [hrefPath, hrefQuery] = href.split("?");
    const basePath = hrefPath;

    if (basePath === "/dashboard") {
      const hrefHasView = hrefQuery?.includes("view=monitoring");
      const currentHasView = searchParams.get("view") === "monitoring";
      if (hrefHasView) return pathname === "/dashboard" && currentHasView;
      return pathname === "/dashboard" && !currentHasView;
    }
    if (basePath === "/admin/logs") {
      const hrefHasSystem = hrefQuery?.includes("type=system");
      const currentHasSystem = searchParams.get("type") === "system";
      if (hrefHasSystem) return pathname === "/admin/logs" && currentHasSystem;
      return pathname === "/admin/logs" && !currentHasSystem;
    }

    return pathname.startsWith(basePath);
  };

  const sidebarContent = (
    <div className="flex flex-col h-full">
      {/* Logo */}
      <div className="p-4 pb-2">
        <div className="bg-white rounded-lg p-3 flex items-center justify-center">
          <Image
            src={`${process.env.NEXT_PUBLIC_BASE_PATH || ""}/amazon-logo.svg`}
            alt="Amazon"
            width={210}
            height={70}
            className="object-contain"
            priority
          />
        </div>
        <p className="text-center text-xs text-gray-400 mt-2 font-medium tracking-wide uppercase">
          Transcreation Platform
        </p>
      </div>

      {/* Separator */}
      <div className="mx-4 my-2 h-px bg-white/10" />

      {/* Navigation */}
      <nav className="flex-1 px-3 py-2 space-y-0.5 overflow-y-auto">
        {visibleNavItems.map((item) => {
          const Icon = item.icon;
          const active = isActive(item.href);

          return (
            <Link
              key={item.href}
              href={item.href}
              onClick={() => setMobileOpen(false)}
              className={cn(
                "flex items-center gap-3 px-3 py-2.5 text-sm rounded-lg transition-all duration-150 relative group",
                active
                  ? "text-amazon-orange bg-white/10"
                  : "text-gray-300 hover:text-white hover:bg-white/5"
              )}
            >
              {active && (
                <span className="absolute left-0 top-1/2 -translate-y-1/2 w-[3px] h-5 bg-amazon-orange rounded-r-full" />
              )}
              <Icon className={cn("h-[18px] w-[18px] shrink-0", active ? "text-amazon-orange" : "text-gray-400 group-hover:text-gray-300")} />
              <span className="font-medium">{item.label}</span>
            </Link>
          );
        })}
      </nav>

      {/* User section */}
      <div className="p-3 border-t border-white/10">
        <div className="flex items-center gap-3 px-3 py-2">
          <div className="h-9 w-9 rounded-full bg-amazon-orange flex items-center justify-center text-white text-sm font-bold shrink-0">
            {getInitials(currentUser?.name || "U")}
          </div>
          <div className="flex-1 min-w-0">
            <p className="text-sm font-medium text-white truncate">
              {currentUser?.name || "User"}
            </p>
            <p className="text-xs text-gray-400 truncate">
              {currentUser ? getRoleDisplayName(currentUser.role) : ""}
            </p>
          </div>
          <button
            className="text-gray-400 hover:text-white transition-colors p-1"
            title="Sign out"
            onClick={handleLogout}
          >
            <LogOut className="h-4 w-4" />
          </button>
        </div>
      </div>
    </div>
  );

  return (
    <>
      {/* Mobile toggle */}
      <button
        className="lg:hidden fixed top-4 left-4 z-50 p-2 rounded-lg bg-amazon-dark text-white shadow-lg"
        onClick={() => setMobileOpen(!mobileOpen)}
      >
        {mobileOpen ? <X className="h-5 w-5" /> : <Menu className="h-5 w-5" />}
      </button>

      {/* Mobile overlay */}
      {mobileOpen && (
        <div
          className="lg:hidden fixed inset-0 bg-black/50 z-40"
          onClick={() => setMobileOpen(false)}
        />
      )}

      {/* Sidebar */}
      <aside
        className={cn(
          "fixed top-0 left-0 h-screen w-[260px] bg-amazon-dark z-40 transition-transform duration-300 lg:translate-x-0",
          mobileOpen ? "translate-x-0" : "-translate-x-full"
        )}
      >
        {sidebarContent}
      </aside>
    </>
  );
}