<?php
/*
* 2007-2016 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2016 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

class Condition extends ObjectModel
{
    public $id;

    public $id_ps_condition;

    public $type;

    public $request;

    public $operator;

    public $value;

    public $result;

    public $calculation_type;

    public $calculation_detail;

    public $validated;

    public $date_add;

    public $date_upd;

    public static $unauthorized = ['DELETE', 'DROP'];

    /**
     * @see ObjectModel::$definition
     */
    public static $definition = [
        'table' => 'condition',
        'primary' => 'id_condition',
        'fields' => [
            'id_ps_condition' => ['type' => self::TYPE_INT, 'validate' => 'isInt'],
            'type' => ['type' => self::TYPE_STRING, 'size' => 32],
            'request' => ['type' => self::TYPE_STRING],
            'operator' => ['type' => self::TYPE_NOTHING],
            'value' => ['type' => self::TYPE_STRING],
            'result' => ['type' => self::TYPE_STRING],
            'calculation_type' => ['type' => self::TYPE_STRING],
            'calculation_detail' => ['type' => self::TYPE_STRING],
            'validated' => ['type' => self::TYPE_BOOL, 'validate' => 'isBool'],
            'date_add' => ['type' => self::TYPE_DATE, 'validate' => 'isDateFormat'],
            'date_upd' => ['type' => self::TYPE_DATE, 'validate' => 'isDateFormat'],
        ],
    ];

    public static function getIdByIdPs($id_ps_condition)
    {
        $query = new DbQuery();
        $query->select('id_condition');
        $query->from('condition', 'c');
        $query->where('`id_ps_condition` = ' . (int) $id_ps_condition);

        return (int) Db::getInstance()->getValue($query);
    }

    public static function getIdsByHookCalculation($hook_name)
    {
        $ids = [];

        $sub_query = new DbQuery();
        $sub_query->select('id_advice');
        $sub_query->from('advice', 'a');

        $sub_results = Db::getInstance()->executeS($sub_query);

        $in = [];

        foreach ($sub_results as $sub_result) {
            $in[] = $sub_result['id_advice'];
        }

        $query = new DbQuery();
        $query->select('c.`id_condition`');
        $query->from('condition', 'c');
        $query->join('LEFT JOIN `' . _DB_PREFIX_ . 'condition_advice` ca ON ca.`id_condition` = c.`id_condition`');
        $query->where('c.`calculation_type` = \'hook\'');
        $query->where('c.`calculation_detail` = \'' . pSQL($hook_name) . '\'');
        $query->where('c.`validated` = 0');
        if (count($in)) {
            $query->where('ca.`id_advice` IN (' . implode(',', $in) . ')');
        }
        $query->groupBy('c.`id_condition`');
        $result = Db::getInstance()->executeS($query);

        foreach ($result as $r) {
            $ids[] = $r['id_condition'];
        }

        return array_unique($ids);
    }

    public static function getIdsDailyCalculation()
    {
        $ids = [];
        $in = [];

        //advice conditions validation
        $sub_query = new DbQuery();
        $sub_query->select('id_advice');
        $sub_query->from('advice', 'a');

        $sub_results = Db::getInstance()->executeS($sub_query);

        $in = [];

        foreach ($sub_results as $sub_result) {
            $in[] = $sub_result['id_advice'];
        }

        $query = new DbQuery();
        $query->select('c.`id_condition`');
        $query->from('condition', 'c');
        $query->join('LEFT JOIN `' . _DB_PREFIX_ . 'condition_advice` ca ON ca.`id_condition` = c.`id_condition`');
        $query->where('c.`calculation_type` = \'time\'');
        $query->where('DATEDIFF(NOW(), `date_upd`) >= `calculation_detail`');
        $query->where('c.`validated` = 0');
        if (count($in)) {
            $query->where('ca.`id_advice` IN (' . implode(',', $in) . ')');
        }
        $query->groupBy('c.`id_condition`');

        $result = Db::getInstance()->executeS($query);
        foreach ($result as $r) {
            $ids[] = $r['id_condition'];
        }

        return array_unique($ids);
    }

    public function processCalculation()
    {
        switch ($this->type) {
            case 'configuration':
                $this->processConfiguration();
            break;
            case 'install':
                $this->processInstall();
            break;
            case 'sql':
                $this->processSql();
            break;
        }
    }

    protected function processSql()
    {
        if (preg_match('/' . implode('|', self::$unauthorized) . '/', $this->request)) {
            return false;
        }

        try {
            $this->result = (int) Db::getInstance()->getValue(GamificationTools::parseMetaData($this->request));
        } catch (Exception $e) {
            return false;
        }

        if ($this->makeCalculation($this->operator, $this->result, $this->value)) {
            $this->validated = 1;
        }

        return $this->save();
    }

    protected function processConfiguration()
    {
        $this->result = Configuration::get($this->request);
        if ($this->result = $this->makeCalculation($this->operator, $this->result, $this->value)) {
            $this->validated = 1;
        }
        $this->save();
    }

    protected function processInstall()
    {
        $install = strtotime(_PS_CREATION_DATE_ . ' 00:00:00');
        $value = strtotime('+ ' . (int) $this->value . ' day', $install);
        $this->result = $this->makeCalculation($this->operator, (time() - $install), $value - $install);
        if ($this->result) {
            $this->validated = 1;
        }

        $this->save();
    }

    protected function makeCalculation($operator, $arg1, $arg2)
    {
        $result = false;
        switch ($operator) {
            case '>':
                $result = $arg1 > $arg2;
                break;
            case '>=':
                $result = $arg1 >= $arg2;
                break;
            case '<':
                $result = $arg1 < $arg2;
                break;
            case '<=':
                $result = $arg1 <= $arg2;
                break;
            case '==':
                $result = $arg1 == $arg2;
                break;
            case '!=':
                $result = $arg1 != $arg2;
                break;
        }

        return (bool) $result;
    }
}