import { A, useLocation } from '@solidjs/router';
import { For, Show } from 'solid-js';
import {
  Bell,
  Briefcase,
  ClipboardList,
  FileText,
  FolderCog,
  HandHelping,
  LayoutGrid,
  Percent,
  Receipt,
  Sparkles,
  UserCircle2,
  Users,
  WalletCards,
} from 'lucide-solid';

type Item = {
  href: string;
  label: string;
  iconPath?: string;
  icon?: any;
  aliasPrefix?: string;
  separatorBefore?: boolean;
  group?: string;
};

const items: Item[] = [
  { href: '/admin', label: 'Dashboard', icon: LayoutGrid },
  { href: '/admin/roles', label: 'Internal Role Management', icon: FolderCog, group: 'Management' },
  { href: '/admin/runtime-roles', label: 'External Role Management', icon: Users },
  { href: '/admin/onboarding-management', label: 'External Onboarding', icon: Users, aliasPrefix: '/admin/onboarding-schemas' },
  { href: '/admin/internal-dashboard-management', label: 'Internal Dashboards', icon: LayoutGrid },
  { href: '/admin/external-dashboard-management', label: 'External Dashboards', icon: LayoutGrid, aliasPrefix: '/admin/role-ui-configs' },
  { href: '/admin/approval', label: 'Approval Management', icon: ClipboardList },
  { href: '/admin/department', label: 'Department Management', icon: Briefcase, group: 'Organisation' },
  { href: '/admin/designation', label: 'Designation Management', icon: Briefcase },
  { href: '/admin/employees', label: 'Employee Management', icon: UserCircle2 },
  { href: '/admin/users', label: 'Users Management', icon: Users },
  { href: '/admin/company', label: 'Company Management', icon: Briefcase },
  { href: '/admin/candidate', label: 'Candidate Management', icon: UserCircle2 },
  { href: '/admin/customer', label: 'Customer Management', icon: UserCircle2 },
  { href: '/admin/photographer', label: 'Photographer Management', icon: Sparkles, group: 'Service Providers' },
  { href: '/admin/makeup-artist', label: 'Makeup Artist Management', icon: Sparkles },
  { href: '/admin/tutors', label: 'Tutors Management', icon: Sparkles },
  { href: '/admin/developers', label: 'Developers Management', icon: Sparkles },
  { href: '/admin/jobs', label: 'Jobs Management', icon: Briefcase, group: 'Operations' },
  { href: '/admin/leads', label: 'Leads Management', icon: HandHelping },
  { href: '/admin/pricing', label: 'Pricing Management', icon: WalletCards, group: 'Finance' },
  { href: '/admin/credit', label: 'Credit Management', icon: WalletCards },
  { href: '/admin/coupon', label: 'Coupon Management', icon: Percent },
  { href: '/admin/discount', label: 'Discount Management', icon: Percent },
  { href: '/admin/tax', label: 'Tax Management', icon: Receipt },
  { href: '/admin/order', label: 'Order Management', icon: FileText },
  { href: '/admin/invoice', label: 'Invoice Management', icon: FileText },
  { href: '/admin/review', label: 'Review Management', icon: FileText, group: 'Support' },
  { href: '/admin/support', label: 'Support Management', icon: UserCircle2 },
  { href: '/admin/report', label: 'Report Management', icon: Bell },
  { href: '/admin/ledger', label: 'Ledger Management', icon: Receipt },
  { href: '/admin/kb', label: 'Knowledge Base', icon: FileText },
  { href: '/admin/notifications', label: 'Notifications', icon: Bell },
];

export default function AdminSidebar(props: { onNavigate?: () => void; onLogout?: () => void }) {
  const location = useLocation();

  const active = (item: Item) => {
    if (item.href === '/admin') return location.pathname === '/admin';
    if (item.aliasPrefix && location.pathname.startsWith(item.aliasPrefix)) return true;
    return location.pathname === item.href || location.pathname.startsWith(`${item.href}/`);
  };

  return (
    <aside class="flex h-full w-[268px] flex-col border-r border-[#d7d8df] bg-white">
      <nav class="scrollbar min-h-0 flex-1 overflow-y-auto px-3 py-4">
        <For each={items}>
          {(item, index) => {
            const isActive = () => active(item);
            const showGroup = () => item.group && (index() === 0 || items[index() - 1]?.group !== item.group);
            const Icon = item.icon || FileText;

            return (
              <>
                <Show when={showGroup()}>
                  <div class={`${index() > 0 ? 'mt-4' : ''} mb-1 px-3 pb-1`}>
                    <p class="text-[10px] font-bold uppercase tracking-widest text-slate-400">{item.group}</p>
                  </div>
                </Show>
                <A
                  href={item.href}
                  onClick={() => props.onNavigate?.()}
                  title={item.label}
                  class={`group relative mb-0.5 flex min-h-[40px] w-full items-center gap-2.5 overflow-hidden rounded-lg px-3 text-[13.5px] font-semibold leading-tight transition-all duration-150 ${
                    isActive()
                      ? 'bg-[#e8edf5] text-[#0a1d37]'
                      : 'text-[#44495a] hover:bg-slate-50 hover:text-[#0a1d37]'
                  }`}
                >
                  {/* Left active indicator */}
                  <span
                    class={`absolute bottom-1.5 left-0 top-1.5 w-[3px] rounded-r-full bg-[#0a1d37] transition-opacity duration-150 ${
                      isActive() ? 'opacity-100' : 'opacity-0'
                    }`}
                  />
                  <Icon
                    size={16}
                    class={`shrink-0 transition-colors ${isActive() ? 'text-[#0a1d37]' : 'text-slate-400 group-hover:text-slate-600'}`}
                  />
                  <span class="min-w-0 flex-1 truncate">{item.label}</span>
                </A>
              </>
            );
          }}
        </For>
      </nav>

      <div class="border-t border-[#e5e7ef] px-3 py-3">
        <button
          type="button"
          onClick={() => props.onLogout?.()}
          class="flex h-[40px] w-full items-center gap-2.5 rounded-lg px-3 text-left text-[13.5px] font-semibold text-[#c51d1d] transition hover:bg-red-50"
        >
          <svg class="h-4 w-4 shrink-0" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
            <path stroke-linecap="round" stroke-linejoin="round" d="M17 16l4-4m0 0l-4-4m4 4H9m8 4v1a3 3 0 01-3 3H6a3 3 0 01-3-3V7a3 3 0 013-3h8a3 3 0 013 3v1" />
          </svg>
          <span>Sign Out</span>
        </button>
      </div>
    </aside>
  );
}