{{-- The scaffold: M3's structure of bars, rails and panes around the page, and the FAB, with
     navigation that changes shape with the window (docs/reference/m3/foundations.md § Layout →
     Scaffold). Before 2.0.0 it was `<x-app-shell>`. Props, slots and the breakpoint table are in
     SKILL.md — this is the WHY behind the wiring, not the API.

     `actions`' collapsed-column layout queries the rail's published `--md-navigation-rail-value`
     rather than a breakpoint of its own, so `resources/css/layout/scaffold.css` stays in step with
     the rail's conditions without repeating them.

     `--md-layout-margin: 0px` on the content region (resources/css/layout/scaffold.css) is read by
     layout/pane.css: a pane or canonical layout inside the scaffold draws no margin of its own
     because it can see it is already in a margined region.

     The snackbar host (`<x-toast />`) is part of the scaffold, not a separate element an app adds:
     Compose raises the snackbar over its FAB, but here the host is one fixed element every page
     shares, so the FAB (`fab` slot) is what moves above it instead (resources/css/layout/scaffold.css);
     both clear the bottom bar through `--material-bottom-bar` on a compact window (the bar's 64px,
     the safe-area inset and `--material-bottom-extra`, 0px unless the application docks something
     above the bar).

     Nothing application-specific belongs in here: an app's destinations and chrome come in through
     the props and slots. The caller's `class` and `style` land on the root, `data-md-scaffold`
     itself — the element `style="--material-banner: 4rem"` (SKILL.md) sets a custom property on. --}}

@props([
    'destinations' => [],
    'label' => null,
    'railWidth' => '16rem',
    'tallBar' => false,
    'hideBarOnScroll' => false,
    'hideRailWhenCollapsed' => false,
])

@php
    $label ??= __('Main');
    $current = \Livewire\Livewire::isLivewireRequest() ? \Livewire\Livewire::originalUrl() : request()->url();

    $items = collect($destinations)
        ->filter(fn ($item): bool => is_array($item) && filled($item['title'] ?? null))
        ->map(fn (array $item): array => [
            'title' => (string) $item['title'],
            'icon' => $item['icon'] ?? null,
            'url' => $item['url'] ?? null,
            'active' => (bool) ($item['active'] ?? (filled($item['url'] ?? null) && rtrim(url($item['url']), '/') === rtrim($current, '/'))),
            'badge' => $item['badge'] ?? null,
            'badgeLabel' => filled($item['badgeLabel'] ?? null) ? (string) $item['badgeLabel'] : null,
            'section' => filled($item['section'] ?? null) ? (string) $item['section'] : null,
            'bar' => ($item['bar'] ?? true) !== false,
            'navigate' => ($item['navigate'] ?? true) !== false,
        ])
        ->values();

    $barItems = $items->where('bar', true)->values();

    // Consecutive destinations under the same heading form one group, in the order given.
    $groups = $items->chunkWhile(fn (array $item, int $key, $chunk): bool => $item['section'] === $chunk->last()['section']);
@endphp

<div data-md-scaffold {{ $attributes->only(['class', 'style']) }}>
    <a href="#content" data-md-skip-link>{{ __('Skip to content') }}</a>

    @isset($banner)
        <div data-md-scaffold-banner>{{ $banner }}</div>
    @endisset

    <div data-md-scaffold-row>
        <x-livewire-material::navigation-rail mode="adaptive" :label="$label" :width="$railWidth" :hide-when-collapsed="$hideRailWhenCollapsed">
            @isset($brand)
                <x-slot:brand>{{ $brand }}</x-slot:brand>
            @endisset

            @isset($railHeader)
                <x-slot:header>{{ $railHeader }}</x-slot:header>
            @endisset

            @foreach ($groups as $group)
                @if ($group->first()['section'] !== null)
                    <x-livewire-material::navigation-rail-section :label="$group->first()['section']">
                        @foreach ($group as $item)
                            <x-livewire-material::navigation-rail-item :label="$item['title']" :icon="$item['icon']" :link="$item['url']" :active="$item['active']" :badge="$item['badge']" :badge-label="$item['badgeLabel']" :no-wire-navigate="! $item['navigate']" />
                        @endforeach
                    </x-livewire-material::navigation-rail-section>
                @else
                    @foreach ($group as $item)
                        <x-livewire-material::navigation-rail-item :label="$item['title']" :icon="$item['icon']" :link="$item['url']" :active="$item['active']" :badge="$item['badge']" :badge-label="$item['badgeLabel']" :no-wire-navigate="! $item['navigate']" />
                    @endforeach
                @endif
            @endforeach

            @if (isset($railFooter) || isset($actions))
                <x-slot:footer>
                    {{ $railFooter ?? '' }}

                    @isset($actions)
                        <div data-md-scaffold-actions>
                            {{ $actions }}
                        </div>
                    @endisset
                </x-slot:footer>
            @endif
        </x-livewire-material::navigation-rail>

        <div data-md-scaffold-content>
            {{ $top ?? '' }}

            @isset($fab)
                <div data-md-scaffold-fab>{{ $fab }}</div>
            @endisset

            <main id="content" tabindex="-1" wire:transition.navigate>
                {{ $slot }}
            </main>
        </div>
    </div>

    @if ($barItems->isNotEmpty())
        <div data-md-scaffold-bar>
            <x-livewire-material::navigation-bar :label="$label" :tall="$tallBar" :hide-on-scroll="$hideBarOnScroll">
                @foreach ($barItems as $item)
                    <x-livewire-material::navigation-bar-item :label="$item['title']" :icon="$item['icon']" :link="$item['url']" :active="$item['active']" :badge="$item['badge']" :badge-label="$item['badgeLabel']" :no-wire-navigate="! $item['navigate']" />
                @endforeach
            </x-livewire-material::navigation-bar>
        </div>
    @endif

    <x-livewire-material::toast />
</div>