storing analytics data

2026-02-27 09:46:51 +01:00
parent 15b7b77d20
commit f0cca76eb3
57 changed files with 3478 additions and 466 deletions
--- a/app/Services/UserPreferenceService.php
+++ b/app/Services/UserPreferenceService.php
@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services;
+
+use App\Models\User;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\DB;
+
+/**
+ * UserPreferenceService
+ *
+ * Builds a lightweight preference profile for a user based on:
+ *  - Tags on artworks they have favourited
+ *  - Categories of artwork they have favourited / downloaded
+ *  - Creators they follow
+ *
+ * Output shape:
+ * [
+ *   'top_tags'          => ['space', 'nature', ...],   // up to 5 slugs
+ *   'top_categories'    => ['wallpapers', ...],         // up to 3 slugs
+ *   'followed_creators' => [1, 5, 23, ...],             // user IDs
+ * ]
+ */
+final class UserPreferenceService
+{
+    private const CACHE_TTL = 300; // 5 minutes
+
+    public function build(User $user): array
+    {
+        return Cache::remember(
+            "user.prefs.{$user->id}",
+            self::CACHE_TTL,
+            fn () => $this->compute($user)
+        );
+    }
+
+    private function compute(User $user): array
+    {
+        return [
+            'top_tags'          => $this->topTags($user),
+            'top_categories'    => $this->topCategories($user),
+            'followed_creators' => $this->followedCreatorIds($user),
+        ];
+    }
+
+    /** Top tag slugs derived from the user's favourited artworks */
+    private function topTags(User $user, int $limit = 5): array
+    {
+        return DB::table('artwork_favourites as af')
+            ->join('artwork_tag as at', 'at.artwork_id', '=', 'af.artwork_id')
+            ->join('tags as t', 't.id', '=', 'at.tag_id')
+            ->where('af.user_id', $user->id)
+            ->where('t.is_active', true)
+            ->selectRaw('t.slug, COUNT(*) as cnt')
+            ->groupBy('t.id', 't.slug')
+            ->orderByDesc('cnt')
+            ->limit($limit)
+            ->pluck('slug')
+            ->values()
+            ->all();
+    }
+
+    /** Top category slugs derived from the user's favourited artworks */
+    private function topCategories(User $user, int $limit = 3): array
+    {
+        return DB::table('artwork_favourites as af')
+            ->join('artwork_category as ac', 'ac.artwork_id', '=', 'af.artwork_id')
+            ->join('categories as c', 'c.id', '=', 'ac.category_id')
+            ->where('af.user_id', $user->id)
+            ->whereNull('c.deleted_at')
+            ->selectRaw('c.slug, COUNT(*) as cnt')
+            ->groupBy('c.id', 'c.slug')
+            ->orderByDesc('cnt')
+            ->limit($limit)
+            ->pluck('slug')
+            ->values()
+            ->all();
+    }
+
+    /** IDs of creators the user follows, latest follows first */
+    private function followedCreatorIds(User $user, int $limit = 100): array
+    {
+        return DB::table('user_followers')
+            ->where('follower_id', $user->id)
+            ->orderByDesc('created_at')
+            ->limit($limit)
+            ->pluck('user_id')
+            ->values()
+            ->all();
+    }
+}