TenantAtlas/app/Models/BackupSet.php

<?php

namespace App\Models;

use App\Support\Concerns\DerivesWorkspaceIdFromTenant;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\SoftDeletes;

class BackupSet extends Model
{
    use DerivesWorkspaceIdFromTenant;
    use HasFactory;
    use SoftDeletes;

    protected $guarded = [];

    protected $casts = [
        'metadata' => 'array',
        'completed_at' => 'datetime',
    ];

    public function tenant(): BelongsTo
    {
        return $this->belongsTo(Tenant::class);
    }

    public function items(): HasMany
    {
        return $this->hasMany(BackupItem::class);
    }

    public function restoreRuns(): HasMany
    {
        return $this->hasMany(RestoreRun::class);
    }

    protected static function booted(): void
    {
        static::deleting(function (BackupSet $backupSet) {
            if ($backupSet->isForceDeleting()) {
                return;
            }

            $backupSet->items()->delete();
        });
    }
}