@php
    use App\Filament\Pages\ChooseWorkspace;
    use App\Models\Tenant;
    use App\Models\User;
    use App\Models\WorkspaceMembership;
    use App\Services\Auth\WorkspaceRoleCapabilityMap;
    use App\Support\Auth\Capabilities;
    use App\Support\Workspaces\WorkspaceContext;
    use Filament\Facades\Filament;

    /** @var WorkspaceContext $workspaceContext */
    $workspaceContext = app(WorkspaceContext::class);

    $workspace = $workspaceContext->currentWorkspace(request());

    $user = auth()->user();

    $canSeeAllWorkspaceTenants = false;
    if ($user instanceof User && $workspace) {
        $roles = WorkspaceRoleCapabilityMap::rolesWithCapability(Capabilities::WORKSPACE_MEMBERSHIP_MANAGE);

        $canSeeAllWorkspaceTenants = WorkspaceMembership::query()
            ->where('workspace_id', (int) $workspace->getKey())
            ->where('user_id', (int) $user->getKey())
            ->whereIn('role', $roles)
            ->exists();
    }

    $tenants = collect();
    if ($user instanceof User && $workspace) {
        if ($canSeeAllWorkspaceTenants) {
            $tenants = Tenant::query()
                ->where('workspace_id', (int) $workspace->getKey())
                ->orderBy('name')
                ->get();
        } else {
            $tenants = collect($user->getTenants(Filament::getCurrentOrDefaultPanel()))
                ->filter(fn ($tenant): bool => $tenant instanceof Tenant && (int) $tenant->workspace_id === (int) $workspace->getKey())
                ->values();
        }
    }

    $currentTenant = Filament::getTenant();
    $currentTenantName = $currentTenant instanceof Tenant ? $currentTenant->getFilamentName() : null;

    $path = '/'.ltrim(request()->path(), '/');
    $isTenantScopedRoute = request()->route()?->hasParameter('tenant') || str_starts_with($path, '/admin/t/');

    $lastTenantId = $workspaceContext->lastTenantId(request());
    $canClearTenantContext = $currentTenantName !== null || $lastTenantId !== null;
@endphp

<div class="flex items-center gap-3">
    <x-filament::dropdown placement="bottom-start" teleport>
        <x-slot name="trigger">
            <x-filament::button
                color="gray"
                outlined
                size="sm"
                icon="heroicon-o-squares-2x2"
            >
                {{ $workspace?->name ?? 'Select workspace' }}
            </x-filament::button>
        </x-slot>

        <x-filament::dropdown.list>
            <a
                href="{{ ChooseWorkspace::getUrl() }}"
                class="block px-3 py-2 text-sm hover:bg-gray-50 dark:hover:bg-gray-800"
            >
                Switch workspace
            </a>
        </x-filament::dropdown.list>
    </x-filament::dropdown>

    <div class="h-4 w-px bg-gray-200 dark:bg-gray-700"></div>

    @if (! $workspace)
        <div class="flex items-center gap-2">
            <x-filament::button
                color="gray"
                outlined
                size="sm"
                icon="heroicon-o-building-office-2"
                disabled
            >
                Select tenant
            </x-filament::button>

            <div class="text-xs text-gray-500 dark:text-gray-400">Choose a workspace first.</div>
        </div>
    @elseif ($isTenantScopedRoute)
        <x-filament::button
            color="gray"
            outlined
            size="sm"
            icon="heroicon-o-building-office-2"
            disabled
        >
            {{ $currentTenantName ?? 'Tenant' }}
        </x-filament::button>
    @else
        <x-filament::dropdown placement="bottom-start" teleport>
            <x-slot name="trigger">
                <x-filament::button
                    color="gray"
                    outlined
                    size="sm"
                    icon="heroicon-o-building-office-2"
                >
                    {{ $currentTenantName ?? 'Select tenant' }}
                </x-filament::button>
            </x-slot>

            <x-filament::dropdown.list>
                <div class="px-3 py-2 space-y-2" x-data="{ query: '' }">
                    <div class="text-xs font-medium text-gray-500 dark:text-gray-400">
                        Tenant context
                        @if ($canSeeAllWorkspaceTenants)
                            <span class="text-gray-400">· all workspace tenants</span>
                        @endif
                    </div>

                    @if ($tenants->isEmpty())
                        <div class="text-xs text-gray-500 dark:text-gray-400">
                            {{ $canSeeAllWorkspaceTenants ? 'No tenants exist in this workspace.' : 'No tenants you can access in this workspace.' }}
                        </div>
                    @else
                        <div class="space-y-2">
                            <input
                                type="text"
                                class="fi-input fi-text-input w-full"
                                placeholder="Search tenants…"
                                x-model="query"
                            />

                            <div class="max-h-64 overflow-auto rounded-lg border border-gray-200 dark:border-gray-700">
                                @foreach ($tenants as $tenant)
                                    <form method="POST" action="{{ route('admin.select-tenant') }}">
                                        @csrf
                                        <input type="hidden" name="tenant_id" value="{{ (int) $tenant->getKey() }}" />

                                        <button
                                            type="submit"
                                            class="w-full px-3 py-2 text-left text-sm hover:bg-gray-50 dark:hover:bg-gray-800"
                                            data-search="{{ (string) str($tenant->getFilamentName())->lower() }}"
                                            x-show="query === '' || ($el.dataset.search ?? '').includes(query.toLowerCase())"
                                        >
                                            {{ $tenant->getFilamentName() }}
                                        </button>
                                    </form>
                                @endforeach
                            </div>

                            @if ($canClearTenantContext)
                                <form method="POST" action="{{ route('admin.clear-tenant-context') }}">
                                    @csrf

                                    <x-filament::button color="gray" size="sm" outlined>
                                        Clear tenant context
                                    </x-filament::button>
                                </form>
                            @endif

                            <div class="text-xs text-gray-500 dark:text-gray-400">
                                Switching tenants is explicit. Canonical monitoring URLs do not change tenant context.
                            </div>
                        </div>
                    @endif
                </div>
            </x-filament::dropdown.list>
        </x-filament::dropdown>
    @endif
</div>