<?php


use Empik\Marketplace\Factory\EmpikClientFactory;
use Empik\Marketplace\API\EmpikClient;

class AdminEmpikActionLogController extends ModuleAdminController
{
    /** @var EmpikClientFactory */
    private $empikClientFactory;

    /** @var EmpikClient */
    private $empikClient;

    /** @var int */
    protected $logLimit = 20;

    public function __construct()
    {
        $this->bootstrap = true;
        $this->table = 'empik_action';
        $this->className = 'EmpikAction';
        $this->lang = false;

        parent::__construct();

        $this->empikClientFactory = $this->module->getService('empik.marketplace.factory.empikClientFactory');
        $this->empikClient = $this->empikClientFactory->createClient();

        $this->_select .= 'id_import AS id_import_log';
        $this->_defaultOrderWay = 'DESC';

        $this->fields_list = [
            'id_empik_action' => [
                'title' => $this->l('ID'),
                'align' => 'center',
                'class' => 'fixed-width-xs'
            ],
            'action' => [
                'title' => $this->l('Action'),
            ],
            'date_start' => [
                'title' => $this->l('Date start'),
                'type' => 'datetime',
            ],
            'date_end' => [
                'title' => $this->l('Date end'),
                'type' => 'datetime',
            ],
            'status' => [
                'title' => $this->l('Status'),
            ],
            'id_import' => [
                'title' => $this->l('Import ID'),
            ],
            'import_count' => [
                'title' => $this->l('Nb. products'),
            ],
            'id_import_log' => [
                'title' => $this->l('Report'),
                'class' => 'fixed-width-md',
                'align' => 'center',
                'callback' => 'displayDownloadReportButton',
                'search' => false,
                'orderby' => false,
            ],
        ];
    }

    public function initToolbar()
    {
        $this->toolbar_btn = [];
    }

    public function initContent()
    {
        $this->cleanupActionLog();

        parent::initContent();

        $this->updateActionLog();
    }

    public function init()
    {
        if (Tools::getValue('action') === 'downloadLog') {
            $this->getExportErrorLog();
        }

        parent::init();
    }

    public function displayDownloadReportButton($val, $row)
    {
        if (!$val || $row['status'] !== 'COMPLETE') {
            return '';
        }

        $this->context->smarty->assign(
            [
                'href' => self::$currentIndex.'&token='.$this->token. '&'.$this->identifier.'='.$row['id_empik_action'].'&action=downloadLog',
            ]
        );

        return $this->module->display($this->module->name, 'views/templates/admin/list_action_download.tpl');
    }

    public function getExportErrorLog()
    {
        /** @var EmpikAction $obj */
        $empikAction = $this->loadObject();
        $importId = $empikAction->id_import;

        if (!$importId) {
            $this->errors[] = $this->l('No import ID for selected action');
            return;
        }

        try {
            switch ($empikAction->action) {
                case EmpikAction::ACTION_PRODUCT_EXPORT:
                    $response = $this->empikClient->getProductImportErrorReport($importId);
                    break;
                case EmpikAction::ACTION_OFFER_EXPORT:
                    $response = $this->empikClient->getOfferImportErrorReport($importId);
                    break;
                default:
                    return;
            }

            $this->contentOutput($response, sprintf('report_%s.csv', $importId));

        } catch (Exception $e) {
            $this->errors[] = sprintf($this->l('No error report found for import: %s'), $importId);
        }
    }

    protected function cleanupActionLog()
    {
        $id =  Db::getInstance()->getValue('SELECT MAX(id_empik_action) - '.(int)$this->logLimit.' FROM `'._DB_PREFIX_.'empik_action`');
        Db::getInstance()->execute('DELETE FROM `'._DB_PREFIX_.'empik_action` WHERE id_empik_action <= ' . (int)$id);
    }

    protected function updateActionLog()
    {
        $this->getList(Context::getContext()->language->id);

        $endStatuses = ['COMPLETE', 'FAILED', 'API_ERROR'];

        foreach ($this->_list as $row) {

            $empikAction = new EmpikAction($row['id_empik_action']);

            if (!$empikAction->id_import || in_array($empikAction->status, $endStatuses)) {
                continue;
            }

            try {
                switch ($empikAction->action) {
                    case EmpikAction::ACTION_PRODUCT_EXPORT:
                        $response = $this->empikClient->getProductsImport($empikAction->id_import);
                        $this->updateActionProductImport($response, $empikAction);
                        break;
                    case EmpikAction::ACTION_OFFER_EXPORT:
                        $response = $this->empikClient->getOffersImport($empikAction->id_import);
                        $this->updateActionOfferImport($response, $empikAction);
                        break;
                }
            } catch (Exception $e) {
                $this->errors[] = $e->getMessage();
            }
        }
    }

    /**
     * @param array $response
     * @param EmpikAction $action
     * @throws PrestaShopDatabaseException
     * @throws PrestaShopException
     */
    protected function updateActionProductImport($response, $action)
    {
        $action->status = $response['import_status'];
        $action->import_count = $response['transform_lines_read'];
        $action->update();
    }

    /**
     * @param array $response
     * @param EmpikAction $action
     * @throws PrestaShopDatabaseException
     * @throws PrestaShopException
     */
    protected function updateActionOfferImport($response, $action)
    {
        $action->status = $response['status'];
        $action->import_count = $response['lines_read'];
        $action->update();
    }

    /**
     * @param string $content
     * @param string $filename
     */
    protected function contentOutput($content, $filename = 'error_report.csv')
    {
        if (ob_get_level() > 0) {
            ob_clean();
        }

        header('Content-Type: application/octet-stream');
        header('Content-Disposition: attachment; filename="'.$filename.'"');
        header('Content-Length: ' . strlen($content));
        echo $content;
        exit;
    }

    protected function l($string, $class = null, $addslashes = false, $htmlentities = true)
    {
        return Translate::getModuleTranslation($this->module, $string, get_class($this), null, $addslashes);
    }
}