<?php
/**
 * AccountingEngine
 *
 * Core double-entry validation and rules.
 * Ensures every journal entry balances (total debit = total credit).
 * All other accounting classes depend on this for validation.
 */
class AccountingEngine
{
    private PDO $pdo;
    private int $companyId;

    public function __construct(PDO $pdo, int $company_id)
    {
        $this->pdo       = $pdo;
        $this->companyId = $company_id;
    }

    // TODO: validate journal lines balance (sum debit = sum credit)
    // TODO: validate account codes exist and are posting accounts
    // TODO: validate period is open
}