@php
    $value = fn ($field, $default = '') => old($field, optional($item)->$field ?? $default);
    $parentCategories = $categories->whereNull('parent_id');
    $childGroups = $categories->whereNotNull('parent_id')->groupBy('parent_id');
@endphp

@extends('layouts.admin')

@section('content')
<section class="admin-page-head compact">
    <div>
        <p class="eyebrow">{{ $item ? 'Edit category' : 'Catalog taxonomy' }}</p>
        <h1>{{ $item ? $item->name : 'Categories' }}</h1>
        <p>Manage top-level domains and nested product categories used across the public catalog.</p>
    </div>
    <div class="admin-head-actions">
        <a class="button secondary" href="{{ route('admin.categories', $trashMode ? [] : ['trash' => 1]) }}">{{ $trashMode ? 'Active Categories' : 'View Trash' }}</a>
    </div>
</section>

<div class="admin-grid category-admin-layout">
    <form method="post" action="{{ route('admin.categories.save') }}" class="admin-form">
        @csrf
        <input type="hidden" name="id" value="{{ optional($item)->id }}">

        <label>Name<input name="name" value="{{ $value('name') }}" required></label>
        <label>Slug<input name="slug" value="{{ $value('slug') }}"></label>

        <label>
            Parent Category
            <select name="parent_id">
                <option value="0">None - top-level parent</option>
                @foreach($parentCategories as $parent)
                    @if(! $item || $item->id !== $parent->id)
                        <option value="{{ $parent->id }}" @selected((int) $value('parent_id', 0) === $parent->id)>{{ $parent->name }}</option>
                    @endif
                @endforeach
            </select>
            <small class="hint">Choose none for the 3 main domains. Choose a parent for child categories.</small>
        </label>

        <label>Description<textarea name="description" rows="4">{{ $value('description') }}</textarea></label>
        <label>Image URL<input name="image_url" value="{{ $value('image_url') }}"></label>
        <label>Meta Title<input name="meta_title" value="{{ $value('meta_title') }}"></label>
        <label>Meta Description<textarea name="meta_description" rows="3">{{ $value('meta_description') }}</textarea></label>
        <label>Sort Order<input type="number" name="sort_order" value="{{ $value('sort_order', 0) }}"></label>

        <div class="form-sticky-actions">
            @if($item)
                <a class="button secondary" href="{{ route('admin.categories') }}">Cancel</a>
            @endif
            <button class="button primary">Save Category</button>
        </div>
    </form>

    <section class="category-tree-panel">
        <div class="category-tree-head">
            <div>
                <p class="eyebrow">Hierarchy</p>
                <h2>Parent and child categories</h2>
            </div>
            <span>{{ $categories->count() }} total</span>
        </div>

        <div class="category-tree">
            @forelse($parentCategories as $parent)
                @php
                    $children = $childGroups->get($parent->id, collect());
                    $parentTotal = (int) ($categoryTotals[$parent->id] ?? 0);
                    $parentDirect = (int) ($productCounts[$parent->id] ?? 0);
                @endphp

                <article class="category-parent-block">
                    <div class="category-parent-row">
                        <div>
                            <span class="category-level-pill">Parent</span>
                            <strong>{{ $parent->name }}</strong>
                            <small>{{ $parent->slug }}</small>
                        </div>
                        <div class="category-counts">
                            <span>{{ $parentTotal }} products</span>
                            <small>{{ $children->count() }} children · {{ $parentDirect }} direct</small>
                        </div>
                        <div class="category-actions">
                            @include('admin.partials.record-actions', ['type' => 'category', 'id' => $parent->id, 'view' => route('admin.categories.products', $parent), 'edit' => route('admin.categories', ['action' => 'edit', 'id' => $parent->id]), 'trashed' => $trashMode])
                        </div>
                    </div>

                    <div class="category-child-list">
                        @forelse($children as $child)
                            <div class="category-child-row">
                                <div>
                                    <span class="category-branch-line"></span>
                                    <strong>{{ $child->name }}</strong>
                                    <small>{{ $child->slug }}</small>
                                </div>
                                <div class="category-counts">
                                    <span>{{ (int) ($categoryTotals[$child->id] ?? 0) }} products</span>
                                    <small>{{ (int) ($productCounts[$child->id] ?? 0) }} direct</small>
                                </div>
                                <div class="category-actions">
                                    @include('admin.partials.record-actions', ['type' => 'category', 'id' => $child->id, 'view' => route('admin.categories.products', $child), 'edit' => route('admin.categories', ['action' => 'edit', 'id' => $child->id]), 'trashed' => $trashMode])
                                </div>
                            </div>
                        @empty
                            <div class="category-empty-child">No child categories yet.</div>
                        @endforelse
                    </div>
                </article>
            @empty
                <article class="info-card"><h2>No categories found</h2><p>Add a parent category to begin.</p></article>
            @endforelse
        </div>
    </section>
</div>
@endsection