portal-api/app/Models/MailCampaign.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;

class MailCampaign extends Model
{
    use HasFactory;

    protected $table = 'mail_campaigns';

    protected $fillable = [
        'uuid',
        'name',
        'template_id',
        'subject',
        'message',
        'variables',
        'cc',
        'bcc',
        'recipient_type',
        'total_recipients',
        'sent_count',
        'failed_count',
        'status',
        'created_by',
        'completed_at',
    ];

    protected $casts = [
        'variables'         => 'array',
        'total_recipients' => 'integer',
        'sent_count'        => 'integer',
        'failed_count'      => 'integer',
        'completed_at'      => 'datetime',
    ];

    protected static function booted(): void
    {
        static::creating(function (self $campaign) {
            $campaign->uuid ??= (string) Str::uuid();
        });
    }

    public function isMarketing(): bool
    {
        return $this->template === null || $this->template->isMarketing();
    }

    public function logs()
    {
        return $this->hasMany(Mail::class, 'campaign_id');
    }

    public function template()
    {
        return $this->belongsTo(Template::class, 'template_id');
    }

    public function creator()
    {
        return $this->belongsTo(User::class, 'created_by');
    }
}