Phase 3 asset storage management

app/Models/Attachment.php

@@ -6,6 +6,7 @@ use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\MorphTo;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Facades\Storage;
 
 #[Fillable(['user_id', 'kind', 'disk', 'path', 'original_name', 'mime_type', 'size', 'caption'])]
 class Attachment extends Model
@@ -19,4 +20,33 @@ class Attachment extends Model
     {
         return $this->belongsTo(User::class);
     }
+
+    public function publicUrl(): string
+    {
+        if ($this->disk === 'public') {
+            return asset('storage/'.$this->path);
+        }
+
+        return Storage::disk($this->disk)->url($this->path);
+    }
+
+    public function formattedSize(): string
+    {
+        $bytes = max(0, (int) $this->size);
+
+        if ($bytes >= 1048576) {
+            return round($bytes / 1048576, 1).' MB';
+        }
+
+        if ($bytes >= 1024) {
+            return round($bytes / 1024, 1).' KB';
+        }
+
+        return $bytes.' B';
+    }
+
+    public function isImage(): bool
+    {
+        return str_starts_with((string) $this->mime_type, 'image/');
+    }
 }