'use client';

import * as React from 'react';
import { usePathname } from 'next/navigation';

import { cn } from '@/lib/utils';
import { Sidebar } from '@/components/layout/sidebar';
import { Topbar } from '@/components/layout/topbar';
import { Drawer } from '@/components/layout/drawer';
import { BottomTabBar } from '@/components/layout/bottom-tab-bar';
import { Breadcrumb, type BreadcrumbEntry } from '@/components/layout/breadcrumb';
import { persistSidebarCollapsed } from '@/lib/layout/sidebar-cookie';
import type { NavItem } from '@/lib/layout/nav-items';

interface AppShellProps {
  /** Logo/marca completa (sidebar desktop expandida e header do drawer). */
  brand: React.ReactNode;
  /** Só o símbolo — sidebar desktop recolhida e topbar mobile. */
  brandCollapsed: React.ReactNode;
  items: NavItem[];
  bottomHrefs: string[];
  footer: React.ReactNode;
  /** Rodapé enxuto (só avatar + logout) para a sidebar recolhida. */
  footerCollapsed: React.ReactNode;
  initialCollapsed: boolean;
  children: React.ReactNode;
}

function findBreadcrumb(items: NavItem[], pathname: string): BreadcrumbEntry[] {
  for (const item of items) {
    if (item.children) {
      const child = item.children.find(
        (c) => pathname === c.href || pathname.startsWith(`${c.href}/`),
      );
      if (child) return [{ label: item.label }, { label: child.label }];
    }
    if (pathname === item.href || pathname.startsWith(`${item.href}/`)) {
      return [{ label: item.label }];
    }
  }
  return [];
}

/**
 * Casco de navegação das áreas autenticadas (Etapa 14): compõe
 * Sidebar/Topbar/Drawer/BottomTabBar num único lugar para não duplicar essa
 * orquestração entre o shell do master e o do tenant — cada um só passa
 * marca, itens de menu e rodapé de usuário diferentes.
 */
export function AppShell({
  brand,
  brandCollapsed,
  items,
  bottomHrefs,
  footer,
  footerCollapsed,
  initialCollapsed,
  children,
}: AppShellProps) {
  const pathname = usePathname();
  const [collapsed, setCollapsed] = React.useState(initialCollapsed);
  const [drawerOpen, setDrawerOpen] = React.useState(false);

  const toggleCollapsed = React.useCallback(() => {
    setCollapsed((prev) => {
      const next = !prev;
      persistSidebarCollapsed(next);
      return next;
    });
  }, []);

  const bottomItems = React.useMemo(
    () =>
      bottomHrefs
        .map((href) => items.find((item) => item.href === href))
        .filter((item): item is NavItem => Boolean(item)),
    [items, bottomHrefs],
  );
  const moreItems = React.useMemo(
    () => items.filter((item) => !bottomHrefs.includes(item.href)),
    [items, bottomHrefs],
  );
  const breadcrumbItems = React.useMemo(() => findBreadcrumb(items, pathname), [items, pathname]);

  return (
    <div className="min-h-dvh bg-neutral-50">
      <Sidebar
        brand={brand}
        brandCollapsed={brandCollapsed}
        items={items}
        footer={footer}
        footerCollapsed={footerCollapsed}
        collapsed={collapsed}
        onToggleCollapsed={toggleCollapsed}
      />
      <Drawer open={drawerOpen} onOpenChange={setDrawerOpen} brand={brand} items={items} footer={footer} />

      <div
        className={cn(
          'flex min-h-dvh flex-col transition-[padding] duration-150',
          collapsed ? 'md:pl-16' : 'md:pl-60',
        )}
      >
        <Topbar
          breadcrumb={<Breadcrumb items={breadcrumbItems} />}
          mobileBrand={brandCollapsed}
          onMenuClick={() => setDrawerOpen(true)}
        />
        <main className="flex-1 p-4 pb-20 md:p-6 md:pb-6">{children}</main>
      </div>

      <BottomTabBar items={bottomItems} moreItems={moreItems} />
    </div>
  );
}