<?php

declare(strict_types=1);

namespace App\Providers;

use Carbon\Carbon;
use Carbon\CarbonImmutable;
use Carbon\CarbonInterval;
use Carbon\CarbonPeriod;
use Illuminate\Contracts\Events\Dispatcher as DispatcherContract;
use Illuminate\Foundation\Events\LocaleUpdated;
use Illuminate\Support\Carbon as IlluminateCarbon;
use Illuminate\Support\Facades\Date;
use Illuminate\Support\ServiceProvider;
use Throwable;

final class LazyCarbonServiceProvider extends ServiceProvider
{
    private bool $localeListenerRegistered = false;

    public function register(): void
    {
        $registerListener = function (DispatcherContract $events): void {
            if ($this->localeListenerRegistered) {
                return;
            }

            $this->localeListenerRegistered = true;

            $events->listen(
                LocaleUpdated::class,
                function (LocaleUpdated $event): void {
                    $this->synchronizeCarbonLocale($event->locale);
                }
            );
        };

        if ($this->app->resolved('events')) {
            $registerListener(
                $this->app->make('events')
            );

            return;
        }

        $this->app->afterResolving(
            'events',
            $registerListener
        );
    }

    private function synchronizeCarbonLocale(string $locale): void
    {
        $fallback = (string) $this->app['config']->get(
            'app.fallback_locale',
            'en'
        );

        Carbon::setLocale($locale);
        CarbonImmutable::setLocale($locale);
        CarbonPeriod::setLocale($locale);
        CarbonInterval::setLocale($locale);

        Carbon::setFallbackLocale($fallback);
        CarbonImmutable::setFallbackLocale($fallback);
        CarbonPeriod::setFallbackLocale($fallback);
        CarbonInterval::setFallbackLocale($fallback);

        IlluminateCarbon::setLocale($locale);

        if (
            method_exists(
                IlluminateCarbon::class,
                'setFallbackLocale'
            )
        ) {
            IlluminateCarbon::setFallbackLocale($fallback);
        }

        try {
            $date = Date::getFacadeRoot();

            if ($date && method_exists($date, 'setLocale')) {
                $date->setLocale($locale);
            }

            if (
                $date &&
                method_exists($date, 'setFallbackLocale')
            ) {
                $date->setFallbackLocale($fallback);
            }
        } catch (Throwable) {
            // Preserve Carbon provider tolerance for custom Date drivers.
        }
    }
}