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.deploy/artwork-evolution-release/app/Models/ArtworkRelation.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+final class ArtworkRelation extends Model
+{
+    use HasFactory;
+
+    public const TYPE_REMAKE_OF = 'remake_of';
+    public const TYPE_REMASTER_OF = 'remaster_of';
+    public const TYPE_REVISION_OF = 'revision_of';
+    public const TYPE_INSPIRED_BY = 'inspired_by';
+    public const TYPE_VARIATION_OF = 'variation_of';
+
+    protected $fillable = [
+        'source_artwork_id',
+        'target_artwork_id',
+        'relation_type',
+        'note',
+        'sort_order',
+        'created_by_user_id',
+    ];
+
+    protected $casts = [
+        'sort_order' => 'integer',
+    ];
+
+    public function sourceArtwork(): BelongsTo
+    {
+        return $this->belongsTo(Artwork::class, 'source_artwork_id');
+    }
+
+    public function targetArtwork(): BelongsTo
+    {
+        return $this->belongsTo(Artwork::class, 'target_artwork_id');
+    }
+
+    public function creator(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'created_by_user_id');
+    }
+}