<?php namespace GermanAirlinesVa\Fleet\Classes;

use GermanAirlinesVa\Fleet\Models\Aircraft as Model;
use Illuminate\Support\Str;
use Illuminate\Http\Request;
use GraphQL\Type\Definition\ResolveInfo;
use Nuwave\Lighthouse\Subscriptions\Subscriber;
use Nuwave\Lighthouse\Schema\Types\GraphQLSubscription;
use Nuwave\Lighthouse\Support\Contracts\GraphQLContext;

class Aircraft extends GraphQLSubscription
{
  /**
   * Check if subscriber is allowed to listen to the subscription.
   *
   * @param  \Nuwave\Lighthouse\Subscriptions\Subscriber  $subscriber
   * @param  \Illuminate\Http\Request  $request
   * @return bool
   */
  public function authorize(Subscriber $subscriber, Request $request): bool
  {
    return true;
  }

  /**
   * Filter which subscribers should receive the subscription.
   *
   * @param  \Nuwave\Lighthouse\Subscriptions\Subscriber  $subscriber
   * @param  mixed  $root
   * @return bool
   */
  public function filter(Subscriber $subscriber, $root): bool
  {
    return true;
  }

  /**
   * Encode topic name.
   *
   * @param  \Nuwave\Lighthouse\Subscriptions\Subscriber  $subscriber
   * @param  string  $fieldName
   * @return string
   */
  public function encodeTopic(Subscriber $subscriber, string $fieldName): string
  {
    // Create a unique topic name based on the `author` argument
    return Str::snake($fieldName);
  }

  /**
   * Decode topic name.
   *
   * @param  string  $fieldName
   * @param  \App\Post  $root
   * @return string
   */
  public function decodeTopic(string $fieldName, $root): string
  {
    return Str::snake($fieldName);
  }

  /**
   * Resolve the subscription.
   *
   * @param  \App\Post  $root
   * @param  array<string, mixed>  $args
   * @param  \Nuwave\Lighthouse\Support\Contracts\GraphQLContext  $context
   * @param  \GraphQL\Type\Definition\ResolveInfo  $resolveInfo
   * @return mixed
   */
  public function resolve($root, array $args, GraphQLContext $context, ResolveInfo $resolveInfo): Model
  {
    // Optionally manipulate the `$root` item before it gets broadcasted to
    // subscribed client(s).
    $root->load();

    return $root;
  }
}