Adds latest episode api endpoint and some other minor modifications.

site/app/Http/Resources/LatestEpisodeResource.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class LatestEpisodeResource extends JsonResource
+{
+     /**
+     * Transform the resource into an array.
+     *
+     * @param  Request  $request
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        $podcast = $this->resource;
+        $artwork = $podcast->latestArtwork;
+        $episode = $artwork->episode;
+        $artist = $artwork->artist;
+
+        $static = config('app.static_asset_url');
+        $full = $static . '/artworks/' . $artwork->filename;
+        $thumb = $static . '/thumbnails/' . $artwork->filename;
+        $raw = (float) $episode->episode_number;
+        if (fmod($raw, 1) === 0.0) {
+            // no fractional part
+            $episodeNumber = (int) $raw;
+        } else {
+            // keep one decimal place
+            $episodeNumber = round($raw, 1);
+        }
+        return [
+            'artist_name'    => $artist->name,
+            'artist_profile' => url('/artist/' . $artist->slug),
+            'artist_avatar'  => $artist->avatar(),
+
+            'artwork_full'   => $full,
+            'artwork_thumb'  => $thumb,
+
+            'episode_title'  => $episode->title,
+            'episode_number' => $episodeNumber,
+            'episode_date'   => $episode->episode_date->format('Y-m-d'),
+            'episode_mp3'    => $episode->mp3,
+            'podcast_title'  => $podcast->name,
+            'podcast_archive' => url('/podcasts/' . $podcast->slug),
+        ];
+    }
+}