ldc-supportweb/app/Models/Credit/CreditLog.php

<?php

namespace App\Models\Credit;

use App\Enums\Credit\BalanceOperationEnum;
use Illuminate\Database\Eloquent\Model;

/**
 * @property \App\Enums\Credit\BalanceOperationEnum $type
 * @property double                                 $amount
 * @property Account                                $credit_account_id
 * @property \Illuminate\Support\Carbon             $created_at
 */
class CreditLog extends Model
{
    /**
     * Indicates if the model should be timestamped.
     *
     * @var boolean
     */
    public $timestamps = false;

    /**
     * The attributes that are fillable.
     *
     * @var list<string>
     */
    protected $fillable = [
        'type',
        'amount',
        'credit_account_id',
        'created_at',
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'type' => BalanceOperationEnum::class
    ];

    /**
     * Perform any actions required after the model boots.
     *
     * @return void
     */
    protected static function booted(): void
    {
        static::creating(function (self $model) {
            $model->created_at = now();
            if ($model->type->equals(BalanceOperationEnum::debit)) {
                $model->account->balance = $model->account->balance - $model->amount;
            }
            if ($model->type->equals(BalanceOperationEnum::credit)) {
                $model->account->balance = $model->account->balance + $model->amount;
            }
            $model->account->saveOrFail();
        });
        static::deleting(function () {
            throw new \Error('Action impossible');
        });
    }

    // * RELATIONSHIPS

    /**
     * BelongsToMany estimation relation (1 nullable).
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
     */
    public function estimation(): \Illuminate\Database\Eloquent\Relations\BelongsToMany
    {
        return $this->belongsToMany(Estimation::class, EstimationLog::class, 'credit_log_id', 'credit_estimation_id')
            ->withTimestamps();
    }

    /**
     * BelongsTo account relation.
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function account(): \Illuminate\Database\Eloquent\Relations\BelongsTo
    {
        return $this->belongsTo(Account::class, 'credit_account_id');
    }
}