@php
    $tenant = current_tenant();
    $user = auth()->user();

    // Helper to filter menu items by permission
    $can = fn ($permission) => $user && $user->hasPermission($permission);
    $canAny = fn ($permissions) => $user && $user->hasAnyPermission($permissions);
    $hasRoute = fn ($route) => Route::has($route);

    $menu = [
        ['label' => __('Dashboard'), 'route' => 'dashboard', 'icon' => 'home', 'active' => request()->routeIs('dashboard')],
        ['label' => __('POS'), 'route' => 'pos.create', 'icon' => 'shopping-cart', 'active' => request()->routeIs('pos*'), 'permission' => 'sales.create'],
        ['label' => __('Products'), 'icon' => 'cube', 'children' => [
            ['label' => __('All Products'), 'route' => 'products.index', 'permission' => 'products.view'],
            ['label' => __('Categories'), 'route' => 'categories.index', 'permission' => 'products.view'],
            ['label' => __('Batches'), 'route' => 'batches.index', 'permission' => 'products.view'],
            ['label' => __('Import Products'), 'route' => 'products.import.form', 'permission' => 'products.create'],
            ['label' => __('Low Stock'), 'route' => 'products.low-stock', 'permission' => 'products.view'],
            ['label' => __('Expiring Soon'), 'route' => 'products.expiring-soon', 'permission' => 'products.view'],
        ]],
        ['label' => __('Stock'), 'icon' => 'archive', 'children' => [
            ['label' => __('Global stock'), 'route' => 'stock.global', 'permission' => 'stock.view'],
            ['label' => __('Warehouse'), 'route' => 'stock.warehouse', 'permission' => 'stock.view'],
            ['label' => __('POS'), 'route' => 'stock.pos', 'permission' => 'stock.view'],
            ['label' => __('Transfers'), 'route' => 'transfers.index', 'permission' => 'stock.transfer'],
            ['label' => __('Inventory'), 'route' => 'inventories.index', 'permission' => 'stock.adjust'],
        ]],
        ['label' => __('Sales / POS'), 'icon' => 'shopping-cart', 'children' => [
            ['label' => __('New Sale'), 'route' => 'pos.create', 'permission' => 'sales.create'],
            ['label' => __('Sales History'), 'route' => 'sales.index', 'permission' => 'sales.view'],
            ['label' => __('Quotes'), 'route' => 'quotes.index', 'permission' => 'sales.create'],
            ['label' => __('Invoices'), 'route' => 'sales.invoices', 'permission' => 'sales.view'],
            ['label' => __('Returns'), 'route' => 'returns.index', 'permission' => 'sales.create'],
        ]],
        ['label' => __('Purchases'), 'icon' => 'truck', 'children' => [
            ['label' => __('New Purchase'), 'route' => 'purchases.create', 'permission' => 'purchases.create'],
            ['label' => __('Purchase History'), 'route' => 'purchases.index', 'permission' => 'purchases.view'],
            ['label' => __('Suppliers'), 'route' => 'suppliers.index', 'permission' => 'purchases.view'],
            ['label' => __('Supplier Payments'), 'route' => 'supplier-payments.index', 'permission' => 'purchases.create'],
            ['label' => __('Low Stock Reorder'), 'route' => 'reorder.index', 'permission' => 'purchases.create'],
        ]],
        ['label' => __('Clients'), 'icon' => 'users', 'children' => [
            ['label' => __('Manage Clients'), 'route' => 'clients.index', 'permission' => 'clients.manage'],
        ]],
        ['label' => __('Employees'), 'icon' => 'identification', 'children' => [
            ['label' => __('Manage Employees'), 'route' => 'employees.index', 'permission' => 'employees.manage'],
            ['label' => __('Roles & Permissions'), 'route' => 'roles.index', 'permission' => 'roles.manage'],
        ]],
        ['label' => __('Reports'), 'route' => 'reports.index', 'icon' => 'chart-bar', 'active' => request()->routeIs('reports.*'), 'permission' => 'reports.view'],
        ['label' => __('Accounting'), 'icon' => 'chart-bar', 'children' => [
            ['label' => __('Journal'), 'route' => 'accounting.journal', 'permission' => 'reports.view'],
            ['label' => __('General ledger'), 'route' => 'accounting.ledger', 'permission' => 'reports.view'],
            ['label' => __('Balance sheet'), 'route' => 'accounting.balance-sheet', 'permission' => 'reports.view'],
        ]],
        ['label' => __('SaaS'), 'icon' => 'cloud', 'children' => [
            ['label' => __('Tenants'), 'route' => 'saas.tenants.index', 'permission' => 'saas.manage'],
            ['label' => __('Subscriptions'), 'route' => 'saas.subscriptions.index', 'permission' => 'saas.manage'],
            ['label' => __('Plans'), 'route' => 'saas.plans.index', 'permission' => 'saas.manage'],
            ['label' => __('Accounts'), 'route' => 'saas.users.index', 'permission' => 'saas.manage'],
        ]],
        ['label' => __('Settings'), 'icon' => 'cog', 'children' => [
            ['label' => __('App & Company'), 'route' => 'settings.index', 'permission' => 'settings.manage'],
            ['label' => __('Auto-backup'), 'route' => 'backups.index', 'permission' => 'backups.manage'],
            ['label' => __('Data export / import'), 'route' => 'data.index', 'permission' => 'settings.manage'],
            ['label' => __('Activity Log'), 'route' => 'activity.index', 'permission' => 'settings.manage'],
        ]],
    ];
@endphp

<aside x-cloak
       :class="{
           'translate-x-0': sidebarOpen,
           '-translate-x-full': !sidebarOpen,
           'lg:translate-x-0 lg:block': desktopOpen,
           'lg:-translate-x-full': !desktopOpen
       }"
       class="fixed inset-y-0 left-0 z-40 w-72 transform overflow-y-auto bg-brand-800 dark:bg-brand-900 transition-transform duration-200 ease-in-out">
    <div class="flex h-16 items-center gap-3 px-6">
        @if ($tenant?->logo)
            <img src="{{ Storage::url($tenant->logo) }}" alt="{{ config('pharma.name') }}" class="h-9 w-auto rounded-lg">
        @else
            <div class="flex h-9 w-9 items-center justify-center rounded-xl bg-white/15 text-lg font-bold text-white">
                Rx
            </div>
        @endif
        <div>
            <p class="text-sm font-bold leading-tight text-white">{{ config('pharma.name') }}</p>
            <p class="text-xs text-brand-200">v{{ config('pharma.version') }}</p>
        </div>
    </div>

    <div class="mx-4 mb-4 rounded-xl bg-brand-900/40 p-3">
        <p class="truncate text-sm font-semibold text-white">{{ $tenant?->name ?? __('SaaS Back Office') }}</p>
        <p class="truncate text-xs text-brand-200">{{ $tenant?->currency_symbol ?? 'Ar' }} · {{ $tenant?->timezone ?? config('pharma.default_timezone') }}</p>
    </div>

    <nav class="space-y-1 px-4 pb-10">
        @php
            $filteredMenu = collect($menu)->filter(function ($item) use ($can, $canAny, $hasRoute) {
                // Check if parent item has permission requirement
                if (isset($item['permission']) && !$can($item['permission'])) {
                    return false;
                }
                // Check if route exists (only for items without children)
                if (empty($item['children']) && (!isset($item['route']) || ! $hasRoute($item['route']))) {
                    return false;
                }
                // Check children permissions
                if (! empty($item['children'])) {
                    $item['children'] = collect($item['children'])->filter(function ($child) use ($can, $hasRoute) {
                        if (isset($child['permission']) && !$can($child['permission'])) {
                            return false;
                        }
                        return !isset($child['route']) || $hasRoute($child['route']);
                    })->values()->all();
                    // Hide parent if no children visible
                    if (empty($item['children'])) {
                        return false;
                    }
                }
                return true;
            })->values()->all();
        @endphp
        @foreach ($filteredMenu as $item)
            @if (! empty($item['children']))
                <div x-data="{ open: {{ collect($item['children'])->contains(fn ($c) => request()->routeIs(($c['route'] ?? '').'*')) ? 'true' : 'false' }} }">
                    <button @click="open = !open"
                            class="sidebar-link w-full">
                        <span class="flex items-center gap-3">
                            <x-icon :name="$item['icon']" class="h-5 w-5" />
                            {{ $item['label'] }}
                        </span>
                        <svg :class="open ? 'rotate-90' : ''" class="h-4 w-4 transition" fill="none" viewBox="0 0 24 24" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"/></svg>
                    </button>
                    <div x-show="open" x-cloak class="mt-1 space-y-1 pl-8">
                        @foreach ($item['children'] as $child)
                            <a href="{{ Route::has($child['route']) ? route($child['route']) : '#' }}"
                               class="block rounded-lg px-3 py-1.5 text-sm text-brand-100/70 transition hover:text-white {{ request()->routeIs($child['route'].'*') ? 'text-white font-semibold' : '' }}">
                                {{ $child['label'] }}
                            </a>
                        @endforeach
                    </div>
                </div>
            @else
                <a href="{{ route($item['route']) }}" class="sidebar-link {{ ! empty($item['active']) ? 'active' : '' }}">
                    <span class="flex items-center gap-3">
                        <x-icon :name="$item['icon']" class="h-5 w-5" />
                        {{ $item['label'] }}
                    </span>
                </a>
            @endif
        @endforeach
    </nav>
</aside>