openstamanager/plugins/statistiche_articoli/src/Stats.php

<?php
/*
 * OpenSTAManager: il software gestionale open source per l'assistenza tecnica e la fatturazione
 * Copyright (C) DevCode s.r.l.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */

namespace Plugins\StatisticheArticoli;

class Stats
{
    public static function prezzi($id_articolo, $start, $end, $dir = 'uscita')
    {
        $database = database();

        $from = 'FROM co_righe_documenti INNER JOIN co_documenti ON co_righe_documenti.iddocumento = co_documenti.id WHERE co_righe_documenti.subtotale != 0 AND co_documenti.idtipodocumento IN (SELECT id FROM co_tipidocumento WHERE dir = '.prepare($dir).') AND co_documenti.data BETWEEN '.prepare($start).' AND '.prepare($end).' AND co_righe_documenti.idarticolo='.prepare($id_articolo);

        $prezzo_medio = $database->fetchOne('SELECT (SUM(subtotale) - SUM(sconto)) / SUM(qta) AS prezzo '.$from)['prezzo'];

        $prezzo = 'SELECT (subtotale - sconto) / qta AS prezzo, co_documenti.data '.$from.' ORDER BY prezzo';
        $prezzo_min = $database->fetchOne($prezzo.' ASC');
        $prezzo_max = $database->fetchOne($prezzo.' DESC');

        return [
            'media' => $prezzo_medio,
            'max' => $prezzo_max,
            'min' => $prezzo_min,
        ];
    }
}