{{-- One item in an `<x-menu>`: an action, a link, or a choice.

     `label`, a leading `icon` (`icon-class` adds classes to it), an `icon-right`, a `description`
     under the label and a `shortcut` at the end (M3's trailing supporting text: "⌘C"). `link`
     makes it an anchor, with `wire:navigate` unless `external` or `no-wire-navigate`. `selected`
     (true or false) makes it a `menuitemcheckbox` with `aria-checked`; a selected item takes
     Expressive's selected shape and tertiary-container, and a `check` at its end unless it has an
     `icon-right` of its own — M3 asks for a cue beyond the colour and the shape. `current` is for a menu of places rather
     than choices — a section picker — and marks the page you are on: `aria-current="page"`, the
     selected shape in secondary-container, the colour M3 gives the navigation indicator. `badge`
     draws `<x-badge>` at the end of the row: `true` for a dot, or a count. `disabled` keeps it in the list, reachable by the
     keyboard but not selectable — M3 keeps a disabled item focusable so a person can find out it
     is there. `keep-open` leaves the menu open when it is activated — for a choice the person may
     want to change twice.

     `submenu` turns the item into a menu of its own: the slot holds `<x-menu-item>`s instead of a
     label, and they open in a second popover beside this one, on the item's end, flipping to its
     start where the window has no room. The item says so — `aria-haspopup="menu"`,
     `aria-expanded`, and a chevron at its end — and keeps the APG menu keyboard: Right, Enter or
     Space open it on its first item, Left or Escape close it and come back here, and on a fine
     pointer resting on the item opens it. Choosing anything inside closes the whole menu, as it
     would from the outer list.

     In the bottom sheet of an `<x-menu sheet-at-compact>` on a compact window the same markup opens
     in place instead: the list stands under the item, inset, and the chevron turns to point down
     at it (menu.css) — a sheet has no room beside an item, and M3 calls submenus "best suited to
     large screens" (docs/reference/m3/components-actions-communication-containment.md § Menus →
     Behaviour). It is never shown as a popover there, so menu.js only flips `aria-expanded`, and
     the keyboard stays the one above: Right, Enter or Space open it, Left or Escape close it and
     come back to the item, and Escape closes nothing more.

     `icon-class` is for an icon whose colour means something of its own, a sport's glyph in the
     sport's colour (`icon-class="text-sport-run"`). A colour there paints the icon, a selected
     item's too: the icon's own colour then carries no specificity, because which of two colour
     utilities wins depends on the order Tailwind emits them. A disabled item's icon stays
     disabled.

     48px tall, body-large label, 20px icons, 16px either side (SegmentedMenuTokens' Expressive
     spacing), 4px corners that open to 12px at the ends of the list — the corner on the spatial
     spring and the colour on the effects one (`state-transition-fast`). The row is 48px rather
     than SegmentedMenuTokens' 44px: M3's menu page publishes 48dp and asks for ≥48×48 targets
     inside an item's slots, and the library's own select and choices menus are 48px, so the more
     binding source wins over the more specific one. --}}

@props([
    'label' => null,
    'icon' => null,
    'iconClass' => null,
    'iconRight' => null,
    'description' => null,
    'shortcut' => null,
    'link' => null,
    'external' => false,
    'noWireNavigate' => false,
    'selected' => null,
    'current' => false,
    'badge' => null,
    'disabled' => false,
    'keepOpen' => false,
    'submenu' => false,
])

@php
    $isLink = filled($link);
    $tag = $isLink ? 'a' : 'button';

    // A submenu's own popover, named like the menu's: a new id and a new anchor name with every
    // render, matched through a morph by the key rather than by either of them.
    $key = $submenu ? \Illuminate\Support\Str::lower(\Illuminate\Support\Str::random(10)) : null;
    $anchor = $submenu ? "--material-submenu-{$key}" : null;

    $attributes = $attributes
        ->class([
            'group/item state-layer flex w-full min-h-12 cursor-pointer items-center gap-3 px-4 text-start outline-none',
            'rounded-corner-xs first:rounded-t-corner-md last:rounded-b-corner-md',
            'state-transition-fast',
            'focus-visible:outline-3 focus-visible:-outline-offset-3 focus-visible:outline-secondary',
            'py-2' => filled($description),
            'rounded-corner-md bg-tertiary-container text-on-tertiary-container' => $selected === true,
            'rounded-corner-md bg-secondary-container text-on-secondary-container' => $current && $selected !== true,
            'pointer-events-none text-on-surface/38' => $disabled,
        ])
        ->merge(array_filter([
            'role' => $selected === null ? 'menuitem' : 'menuitemcheckbox',
            'aria-checked' => $selected === null ? null : ($selected ? 'true' : 'false'),
            'aria-current' => $current ? 'page' : null,
            'aria-disabled' => $disabled ? 'true' : null,
            'tabindex' => '-1',
            'x-ref' => $submenu ? 'trigger' : null,
            'style' => $submenu ? "anchor-name: {$anchor}" : null,
            'aria-haspopup' => $submenu ? 'menu' : null,
            'aria-expanded' => $submenu ? 'false' : null,
            'aria-controls' => $submenu ? "material-submenu-{$key}" : null,
            'x-on:click' => $submenu ? "toggle('first')" : null,
            'type' => $isLink ? null : 'button',
            'href' => $isLink ? $link : null,
            'target' => $isLink && $external ? '_blank' : null,
            'rel' => $isLink && $external ? 'noopener' : null,
            'wire:navigate' => $isLink && ! $external && ! $noWireNavigate && ! $attributes->has('wire:navigate') ? true : null,
            // Opening a submenu is not choosing anything: the outer menu stays where it was.
            'data-keep-open' => $keepOpen || $submenu ? true : null,
        ], fn ($value): bool => $value !== null));

    $iconInk = match (true) {
        $disabled => 'text-on-surface/38',
        $selected === true => 'text-on-tertiary-container',
        $current => 'text-on-secondary-container',
        default => 'text-on-surface-variant',
    };

    $leadingIcon = match (true) {
        blank($iconClass) => 'size-5 '.$iconInk,
        $disabled => \Illuminate\Support\Arr::toCssClasses(['size-5', $iconClass, 'text-on-surface/38!']),
        $selected === true => \Illuminate\Support\Arr::toCssClasses(['size-5 [:where(&)]:text-on-tertiary-container', $iconClass]),
        $current => \Illuminate\Support\Arr::toCssClasses(['size-5 [:where(&)]:text-on-secondary-container', $iconClass]),
        default => \Illuminate\Support\Arr::toCssClasses(['size-5 [:where(&)]:text-on-surface-variant', $iconClass]),
    };
@endphp

@if ($submenu)
    <div x-data="materialSubmenu"
        x-on:keydown.right.prevent.stop="open('first')"
        x-on:pointerenter="hover($event)"
        x-on:pointerleave="unhover()"
    >
@endif

<{{ $tag }} {{ $attributes }}>
    @if ($icon)
        <x-livewire-material::icon :name="$icon" optical="20" :filled="$selected === true || $current" :class="$leadingIcon" />
    @endif

    <span class="min-w-0 flex-1">
        <span class="block truncate type-body-lg">{{ $submenu ? $label : ($label ?? $slot) }}</span>

        @if ($description)
            <span @class(['block type-body-md', $iconInk])>{{ $description }}</span>
        @endif
    </span>

    @if ($badge !== null && $badge !== false && $badge !== '')
        <x-livewire-material::badge :value="$badge === true ? null : $badge" class="shrink-0" />
    @endif
    @if ($shortcut)
        <span @class(['shrink-0 type-label-sm', $iconInk])>{{ $shortcut }}</span>
    @endif

    @if ($iconRight)
        <x-livewire-material::icon :name="$iconRight" optical="20" :class="'size-5 '.$iconInk" />
    @elseif ($submenu)
        {{-- M3's submenu marker: it points the way the list opens, and turns over in an RTL page. --}}
        <x-livewire-material::icon name="chevron_right" optical="20" data-submenu-chevron :class="'size-5 rtl:-scale-x-100 '.$iconInk" />
    @elseif ($selected === true)
        {{-- The third cue M3 recommends, so a chosen item is not told by colour and shape alone. --}}
        <x-livewire-material::icon name="check" optical="20" :class="'size-5 '.$iconInk" />
    @endif
</{{ $tag }}>

@if ($submenu)
        <div
            x-ref="menu"
            {{ new \Illuminate\View\ComponentAttributeBag(['wire:key' => 'material-submenu-'.substr(md5((string) $label), 0, 10)]) }}
            id="material-submenu-{{ $key }}"
            popover="auto"
            role="menu"
            data-submenu
            aria-label="{{ $label }}"
            tabindex="-1"
            style="position-anchor: {{ $anchor }}"
            x-on:keydown.stop="navigate($event)"
            x-on:click="activate($event)"
            class="m-0 mx-1 min-w-28 max-w-70 max-h-[min(18rem,calc(100dvh-2rem))] origin-top overflow-y-auto border-0 p-1 rounded-corner-lg shadow-elevation-2 popover-transition [inset:auto] [position-area:inline-end_span-block-end] [position-try-fallbacks:flip-inline]"
        >
            {{ $slot }}
        </div>
    </div>
@endif