refactor(modules): extract castopod parts into a modules/ folder for a scalable HMVC structure

- create Admin, Analytics, Auth, Fediverse and Install modules in the root modules/ folder
- rename
ActivityPub to Fediverse

modules/Analytics/Models/AnalyticsPodcastByEpisodeModel.php

@@ -0,0 +1,90 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * Class AnalyticsPodcastByEpisodeModel Model for analytics_podcasts_by_episodes table in database
+ *
+ * @copyright  2020 Podlibre
+ * @license    https://www.gnu.org/licenses/agpl-3.0.en.html AGPL3
+ * @link       https://castopod.org/
+ */
+
+namespace Modules\Analytics\Models;
+
+use CodeIgniter\Model;
+use Modules\Analytics\Entities\AnalyticsPodcastsByEpisode;
+
+class AnalyticsPodcastByEpisodeModel extends Model
+{
+    /**
+     * @var string
+     */
+    protected $table = 'analytics_podcasts_by_episode';
+
+    /**
+     * @var string
+     */
+    protected $returnType = AnalyticsPodcastsByEpisode::class;
+
+    /**
+     * @var bool
+     */
+    protected $useSoftDeletes = false;
+
+    /**
+     * @var bool
+     */
+    protected $useTimestamps = false;
+
+    /**
+     * @return AnalyticsPodcastsByEpisode[]
+     */
+    public function getDataByDay(int $podcastId, int $episodeId): array
+    {
+        if (
+            ! ($found = cache("{$podcastId}_{$episodeId}_analytics_podcast_by_episode_by_day"))
+        ) {
+            $found = $this->select('date as labels')
+                ->selectSum('hits', 'values')
+                ->where([
+                    'episode_id' => $episodeId,
+                    'podcast_id' => $podcastId,
+                    'age <' => 60,
+                ])
+                ->groupBy('labels')
+                ->orderBy('labels', 'ASC')
+                ->findAll();
+
+            cache()
+                ->save("{$podcastId}_{$episodeId}_analytics_podcast_by_episode_by_day", $found, 600);
+        }
+
+        return $found;
+    }
+
+    /**
+     * @return AnalyticsPodcastsByEpisode[]
+     */
+    public function getDataByMonth(int $podcastId, int $episodeId = null): array
+    {
+        if (
+            ! ($found = cache("{$podcastId}_{$episodeId}_analytics_podcast_by_episode_by_month"))
+        ) {
+            $found = $this->select('DATE_FORMAT(date,"%Y-%m-01") as labels')
+                ->selectSum('hits', 'values')
+                ->where([
+                    'episode_id' => $episodeId,
+                    'podcast_id' => $podcastId,
+                ])
+                ->groupBy('labels')
+                ->orderBy('labels', 'ASC')
+                ->findAll();
+
+            cache()
+                ->save("{$podcastId}_{$episodeId}_analytics_podcast_by_episode_by_month", $found, 600);
+        }
+
+        return $found;
+    }
+}