LoginPage.php

<?php

namespace App\Filament\Pages\Auth;

use App\Models\User;
use DiogoGPinto\AuthUIEnhancer\Pages\Auth\Concerns\HasCustomLayout;
use Filament\Forms\Components\Select;
use Filament\Forms\Form;
use Filament\Http\Responses\Auth\Contracts\LoginResponse;
use Filament\Pages\Auth\Login as BasePage;

class Login extends BasePage
{
    use HasCustomLayout;

    private function canAuthenticateAs(): bool
    {
        return app()->isLocal() && app()->hasDebugModeEnabled() && config('app.authenticate_as') === true;
    }

    public function authenticate(): ?LoginResponse
    {
        $authenticateAs = $this->form->getState()['user'] ?? null;

        if ($this->canAuthenticateAs() === true && $authenticateAs) {
            auth()->login(User::where('email', $authenticateAs)->first());

            return app(LoginResponse::class);
        }

        return parent::authenticate();
    }

    public function form(Form $form): Form
    {
        if ($this->canAuthenticateAs() === true) {
            $users = User::select(['email', 'name', 'is_owner'])
                ->withCount('companies')
                ->get();

            return $form->schema([
                Select::make('user')
                    ->preload()
                    ->required()
                    ->searchable()
                    ->allowHtml()
                    ->options($users->mapWithKeys(function (User $user) {
                        return [
                            $user->email => view('filament.pages.auth.partials.authenticate-as', [
                                'user' => $user,
                            ])->render(),
                        ];
                    })),
            ]);
        }

        return parent::form($form);
    }

    public function mount(): void
    {
        parent::mount();

        if (app()->isLocal() && $this->canAuthenticateAs() === false) {
            $this->form->fill([
                'email' => config('app.demo_user'),
                'password' => config('app.demo_password'),
                'remember' => true,
            ]);
        }
    }
}

// authenticate-as.blade.php
<div class="flex items-center">
    <span class="mr-1">{{ $user->name }}</span>
    <div class="ml-auto flex gap-1">
        @if(! $user->is_owner)
            <x-filament::badge color="gray" size="md">
                <strong>{{ $user->companies_count }}</strong> {{ Str::plural(__('Company'), $user->companies_count) }}
            </x-filament::badge>
        @endif

        <x-filament::badge color="{{ $user->is_owner ? 'danger' : 'success' }}" size="md">
            {{ $user->is_owner ? __('Admin') : __('Tenant') }}
        </x-filament::badge>
    </div>
</div>