first commit

app/Actions/Titles/Retrieve/GetRelatedTitles.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Actions\Titles\Retrieve;
+
+use App\Models\Title;
+use Illuminate\Support\Arr;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\DB;
+
+class GetRelatedTitles
+{
+    public function execute(Title $title, array $params = []): Collection
+    {
+        $titleIds = $this->getByTags($title, $params);
+
+        if ($titleIds->isNotEmpty()) {
+            return Title::whereIn('id', $titleIds)
+                ->with(['primaryVideo'])
+                ->when(isset($params['compact']), fn($q) => $q->compact())
+                ->get();
+        }
+
+        return collect();
+    }
+
+    private function getByTags(Title $title, array $params): Collection
+    {
+        $prefix = DB::getTablePrefix();
+        $keywordIds = $title->keywords->pluck('id');
+        $genreIds = $title->genres->pluck('id');
+
+        return DB::table('titles')
+            ->join('keyword_title as k', 'k.title_id', '=', 'titles.id')
+            ->join('genre_title as g', 'g.title_id', '=', 'titles.id')
+            ->select(
+                DB::raw(
+                    "{$prefix}titles.id, COUNT({$prefix}k.id) + COUNT({$prefix}g.id) as total_count",
+                ),
+            )
+            ->whereIn('k.keyword_id', $keywordIds)
+            ->whereIn('g.genre_id', $genreIds)
+            ->when($title->release_date, function ($q) use ($title) {
+                $q->whereBetween('release_date', [
+                    $title->release_date->subYears(5)->format('Y-m-d'),
+                    $title->release_date->addYears(5)->format('Y-m-d'),
+                ]);
+            })
+            ->where('titles.id', '!=', $title->id)
+            ->groupBy('titles.id')
+            ->orderBy('total_count', 'desc')
+            ->limit(Arr::get($params, 'limit', 10))
+            ->pluck('titles.id');
+    }
+}