TenantAtlas/app/Http/Controllers/SwitchWorkspaceController.php

<?php

declare(strict_types=1);

namespace App\Http\Controllers;

use App\Filament\Pages\ChooseTenant;
use App\Filament\Pages\TenantDashboard;
use App\Models\User;
use App\Models\Workspace;
use App\Support\Workspaces\WorkspaceContext;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;

final class SwitchWorkspaceController
{
    public function __invoke(Request $request): RedirectResponse
    {
        $user = auth()->user();

        if (! $user instanceof User) {
            abort(403);
        }

        $validated = $request->validate([
            'workspace_id' => ['required', 'integer'],
        ]);

        $workspace = Workspace::query()->whereKey($validated['workspace_id'])->first();

        if (! $workspace instanceof Workspace) {
            abort(404);
        }

        if (! empty($workspace->archived_at)) {
            abort(404);
        }

        $context = app(WorkspaceContext::class);

        if (! $context->isMember($user, $workspace)) {
            abort(404);
        }

        $context->setCurrentWorkspace($workspace, $user, $request);

        $tenantsQuery = $user->tenants()
            ->where('workspace_id', $workspace->getKey())
            ->where('status', 'active');

        $tenantCount = (int) $tenantsQuery->count();

        if ($tenantCount === 0) {
            return redirect()->route('admin.workspace.managed-tenants.onboarding', ['workspace' => $workspace->slug ?? $workspace->getKey()]);
        }

        if ($tenantCount === 1) {
            $tenant = $tenantsQuery->first();

            if ($tenant !== null) {
                return redirect()->to(TenantDashboard::getUrl(tenant: $tenant));
            }
        }

        return redirect()->to(ChooseTenant::getUrl());
    }
}