<?php
/**
 * 2007-2024 PrestaShop
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Academic Free License (AFL 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/afl-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 2007-2024 PrestaShop SA
 *  @license   http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
 *  International Registered Trademark & Property of PrestaShop SA
 */
namespace PrestaShop\Module\Chatgptcontentgenerator\Helper;

use PrestaShop\Module\Chatgptcontentgenerator\Entity\GptContentPostCron;

if (!defined('_PS_VERSION_')) {
    exit;
}

class GeneratePostPeriod
{
    private $gptContentPostCron;

    public function __construct($gptContentPostCron)
    {
        $this->gptContentPostCron = $gptContentPostCron;
    }

    public function getNumberByProduct($idProduct)
    {
        $numberOfPosts = [];

        switch ($this->gptContentPostCron->period) {
            case GptContentPostCron::PERIOD_DAY:
                $numberOfPosts = $this->getTimesPeriodDay($idProduct);
                break;

            case GptContentPostCron::PERIOD_WEEK:
                $numberOfPosts = $this->getTimesPeriodWeek($idProduct);
                break;

            case GptContentPostCron::PERIOD_MONTH:
                $numberOfPosts = $this->getTimesPeriodMonth($idProduct);
                break;
        }

        return $numberOfPosts;
    }

    private function getTimesPeriodDay($idProduct)
    {
        $dateFrom = date('Y-m-d 00:00:00');
        $dateTo = date('Y-m-d 23:59:59');

        return $this->generatePeriods($idProduct, $dateFrom, $dateTo);
    }

    private function getTimesPeriodWeek($idProduct)
    {
        $dateFrom = date('Y-m-d 00:00:00', strtotime('monday this week'));
        $dateTo = date('Y-m-d 23:59:59', strtotime('sunday this week'));

        return $this->generatePeriods($idProduct, $dateFrom, $dateTo);
    }

    private function getTimesPeriodMonth($idProduct)
    {
        $dateFrom = date('Y-m-01 00:00:00');
        $dateTo = date('Y-m-t 23:59:59');

        return $this->generatePeriods($idProduct, $dateFrom, $dateTo);
    }

    private function generatePeriods($idProduct, $dateFrom, $dateTo)
    {
        $res = [];
        $postGeneration = GptContentPostCron::getPostsGenerationByProduct($idProduct, $dateFrom, $dateTo);
        $postGenerationNumber = $this->gptContentPostCron->quantity - count($postGeneration);

        if ($postGenerationNumber <= 0) {
            return $res;
        }

        $lastTime = time();
        if (isset($postGeneration[0])) {
            $lastTime = strtotime($postGeneration[0]['date_add']);
        }

        $timePeriod = (int) floor((strtotime($dateTo) - $lastTime) / $postGenerationNumber);

        for ($i = 0; $i < $postGenerationNumber; ++$i) {
            $res[] = date('Y-m-d H:i:s', strtotime('+ ' . $timePeriod * $i . ' seconds', $lastTime));
        }

        return $res;
    }
}