<?php
  
  namespace FootyRoom\App;
  
  use FootyRoom\Queries\MatchQuery;
  use FootyRoom\Queries\PostQuery;
  use Illuminate\Contracts\Cache\Factory as CacheFactory;
  
  class ViewCounter
  {
      const STEP = 150;
  
      /**
       * @var \FootyRoom\Queries\PostQuery
       */
      protected $postQuery;
  
      /**
       * @var \Illuminate\Contracts\Cache\Factory
       */
      protected $cache;
  
      /**
       * Constructor.
       *
       * @param \Illuminate\Contracts\Cache\Factory $cache
       */
      public function __construct(CacheFactory $cache)
      {
          $this->cache = $cache->store('shared');
      }
  
      /**
       * Increments page view count for a given post.
       *
       * @param int $postId
       * @param int $step
       */
      public function increment($objectRef, $step = self::STEP)
      {
          $cacheKey = "views:$objectRef";
  
          $count = $this->cache->increment($cacheKey, 1);
  
          if ($count === false) {
              if ($this->cache->add($cacheKey, 1, 0) !== true) {
                  $count = $this->cache->increment($cacheKey, 1);
              } else {
                  $count = 1;
              }
          }
  
          if (($count % $step) === 0) {
              list($objectType, $objectId) = explode(':', $objectRef);
  
              switch ($objectType) {
                  case 'match':
                      app(MatchQuery::class)->incrementViewCount($objectId, $step);
                      break;
  
                  case 'post':
                      app(PostQuery::class)->incrementViewCount($objectId, $step);
                      break;
  
                  default:
                      break;
              }
          }
      }
  }