<?php
declare(strict_types=1);


namespace OneClickFormSync\Forms;

if (!defined('ABSPATH')) {
    exit;
}

use OneClickFormSync\Contracts\FormProviderInterface;

/**
 * Registry to manage active form providers.
 */
class FormProviderRegistry
{
    /**
     * @var FormProviderInterface[] List of registered providers.
     */
    private array $providers = [];

    /**
     * Register a new form provider.
     *
     * @param FormProviderInterface $provider
     * @return void
     */
    public function register(FormProviderInterface $provider): void
    {
        $this->providers[$provider->getId()] = $provider;
    }

    /**
     * Get a provider by its ID.
     *
     * @param string $id
     * @return FormProviderInterface|null
     */
    public function get(string $id): ?FormProviderInterface
    {
        return $this->providers[$id] ?? null;
    }

    /**
     * Get all registered providers.
     *
     * @return FormProviderInterface[]
     */
    public function getAll(): array
    {
        return $this->providers;
    }

    /**
     * Get only the available (active) providers.
     *
     * @return FormProviderInterface[]
     */
    public function getAvailable(): array
    {
        return array_filter($this->providers, function (FormProviderInterface $provider) {
            return $provider->isAvailable();
        });
    }
}