<?php

/**
 * Provides getStockTables() — discovers td_stock_* tables scoped to this
 * company's active and historical warehouses via an information_schema JOIN.
 *
 * Requires the using class to expose:
 *   $this->pdo         PDO
 *   $this->company_id  int
 */
trait StockTablesTrait
{
    private function getStockTables(): array
    {
        $sth = $this->pdo->prepare(
            "SELECT t.table_name
             FROM md_warehouse w
             JOIN information_schema.tables t
               ON t.table_schema = DATABASE()
              AND t.table_name = CONCAT('td_stock_', w.id)
             WHERE w.company_id = :company_id"
        );
        $sth->execute([':company_id' => $this->company_id]);
        return $sth->fetchAll(PDO::FETCH_COLUMN);
    }
}