@php
  /** @var \Illuminate\Support\Collection $permissions */
  /** @var \Illuminate\Support\Collection|array $selectedIds */
  $selected = collect(old('permission_ids', $selectedIds ?? []))->map(fn ($id) => (int) $id);
  $allIds = $permissions->flatten(1)->pluck('id')->map(fn ($id) => (int) $id)->values();
  $presetPayload = collect($presets ?? [])->mapWithKeys(function ($preset, $key) use ($permissions) {
      $ids = $permissions->flatten(1)
          ->whereIn('slug', $preset['slugs'] ?? [])
          ->pluck('id')
          ->values()
          ->all();

      return [$key => $ids];
  });
@endphp

<section class="rounded-2xl border border-[var(--color-admin-border)] bg-white p-5 shadow-[var(--admin-shadow)]" data-role-permissions>
    <div class="flex flex-wrap items-start justify-between gap-3">
        <div>
            <h3 class="text-sm font-semibold">Permissions</h3>
            <p class="mt-1 text-xs text-[#6d7175]">Grant access by capability. Nav items and routes check these slugs.</p>
        </div>
        <div class="flex flex-wrap gap-2">
            <button type="button" class="admin-btn" data-perm-select-all>Select all</button>
            <button type="button" class="admin-btn" data-perm-clear>Clear</button>
        </div>
    </div>

    @if(!empty($presets))
        <div class="mt-4 flex flex-wrap gap-2">
            @foreach($presets as $key => $preset)
                <button
                    type="button"
                    class="order-ops-chip"
                    data-perm-preset="{{ $key }}"
                    title="{{ $preset['description'] }}"
                >{{ $preset['label'] }}</button>
            @endforeach
        </div>
    @endif

    <div class="mt-5 space-y-5">
        @foreach($permissions as $group => $items)
            <div class="rounded-xl border border-[var(--color-admin-border)]" data-perm-group>
                <div class="flex items-center justify-between gap-3 border-b border-[var(--color-admin-border)] px-4 py-3">
                    <div>
                        <h4 class="text-sm font-semibold capitalize">{{ str_replace(['_', '-'], ' ', $group) }}</h4>
                        <p class="text-xs text-[#6d7175]">{{ $items->count() }} capabilities</p>
                    </div>
                    <label class="inline-flex items-center gap-2 text-xs text-[#6d7175]">
                        <input type="checkbox" data-perm-group-toggle>
                        Group
                    </label>
                </div>
                <div class="grid gap-2 p-4 sm:grid-cols-2 lg:grid-cols-3">
                    @foreach($items as $permission)
                        <label class="flex items-start gap-2 rounded-lg border border-transparent px-2 py-1.5 text-sm hover:border-[var(--color-admin-border)] hover:bg-[#fafbfb]">
                            <input
                                class="mt-0.5"
                                type="checkbox"
                                name="permission_ids[]"
                                value="{{ $permission->id }}"
                                data-perm-checkbox
                                data-perm-slug="{{ $permission->slug }}"
                                @checked($selected->contains((int) $permission->id))
                            >
                            <span>
                                <span class="block font-medium leading-tight">{{ $permission->name }}</span>
                                <span class="block font-mono text-[11px] text-[#8c9196]">{{ $permission->slug }}</span>
                            </span>
                        </label>
                    @endforeach
                </div>
            </div>
        @endforeach
    </div>
</section>

@push('scripts')
<script>
(() => {
  const root = document.querySelector('[data-role-permissions]');
  if (!root) return;
  const presets = @json($presetPayload);
  const boxes = () => [...root.querySelectorAll('[data-perm-checkbox]')];

  const syncGroups = () => {
    root.querySelectorAll('[data-perm-group]').forEach((group) => {
      const groupBoxes = [...group.querySelectorAll('[data-perm-checkbox]')];
      const toggle = group.querySelector('[data-perm-group-toggle]');
      if (!toggle || !groupBoxes.length) return;
      const checked = groupBoxes.filter((b) => b.checked).length;
      toggle.checked = checked === groupBoxes.length;
      toggle.indeterminate = checked > 0 && checked < groupBoxes.length;
    });
  };

  root.querySelector('[data-perm-select-all]')?.addEventListener('click', () => {
    boxes().forEach((b) => { b.checked = true; });
    syncGroups();
  });
  root.querySelector('[data-perm-clear]')?.addEventListener('click', () => {
    boxes().forEach((b) => { b.checked = false; });
    syncGroups();
  });
  root.querySelectorAll('[data-perm-preset]').forEach((btn) => {
    btn.addEventListener('click', () => {
      const ids = new Set((presets[btn.dataset.permPreset] || []).map(String));
      boxes().forEach((b) => { b.checked = ids.has(String(b.value)); });
      syncGroups();
    });
  });
  root.querySelectorAll('[data-perm-group-toggle]').forEach((toggle) => {
    toggle.addEventListener('change', () => {
      const group = toggle.closest('[data-perm-group]');
      group?.querySelectorAll('[data-perm-checkbox]').forEach((b) => { b.checked = toggle.checked; });
      syncGroups();
    });
  });
  root.addEventListener('change', (e) => {
    if (e.target.matches('[data-perm-checkbox]')) syncGroups();
  });
  syncGroups();
})();
</script>
@endpush