<?php

namespace AcyMailing\Controllers\Users;

use AcyMailing\Classes\MailpoetClass;
use AcyMailing\Classes\UserClass;
use AcyMailing\Helpers\EntitySelectHelper;
use AcyMailing\Helpers\ExportHelper;
use AcyMailing\Helpers\ImportHelper;
use AcyMailing\Helpers\TabHelper;

trait Import
{
    public function import(): void
    {
        acym_setVar('layout', 'import');

        $userClass = new UserClass();

        // Get tables from database
        $tables = acym_getTables();
        $arrayTables = [];
        foreach ($tables as $tableName) {
            $arrayTables[$tableName] = $tableName;
        }

        global $acymCmsUserVars;

        $nbUsersCMS = acym_loadResult('SELECT count('.$acymCmsUserVars->id.') FROM '.$acymCmsUserVars->table);
        if ('wordpress' === ACYM_CMS && is_multisite()) {
            $nbUsersCMS = acym_loadResult(
                'SELECT count('.$acymCmsUserVars->id.')  
                FROM '.$acymCmsUserVars->table.' AS user JOIN #__usermeta  AS `meta` ON `user`.'.$acymCmsUserVars->id.'=`meta`.`user_id`  
                WHERE `meta`.`meta_key`=\'#__capabilities\''
            );
        }
        $data = [
            'tab' => new TabHelper(),
            'nbUsersAcymailing' => $userClass->getCountTotalUsers(),
            'nbUsersCMS' => $nbUsersCMS,
            'tables' => $arrayTables,
            'entitySelect' => new EntitySelectHelper(),
            'importHelper' => new ImportHelper(),
        ];

        if (ACYM_CMS === 'wordpress' && acym_isExtensionActive('mailpoet/mailpoet.php')) {
            $this->prepareMailPoetList($data);
        }


        $this->breadcrumb[acym_translation('ACYM_IMPORT')] = acym_completeLink('users&task=import');
        $data['menuClass'] = $this->menuClass;

        parent::display($data);
    }

    private function prepareMailPoetList(array &$data): void
    {
        $mailpoetClass = new MailpoetClass();
        $data['mailpoet_list'] = $mailpoetClass->getAllLists();
    }


    public function doImport(): void
    {
        wp_verify_nonce(acym_getVar('cmd', '_wpnonce'), 'acymnonce') || die('Invalid Token');

        $function = acym_getVar('cmd', 'import_from');
        $allowedImportModes = acym_isAdmin() ? ['file', 'textarea', 'cms', 'mailpoet', 'contact'] : ['file', 'textarea'];

        // The table name comes from the request, this mode can read any data of the site
        if (acym_hasAdminPermissions()) {
            $allowedImportModes[] = 'database';
        }

        if (!in_array($function, $allowedImportModes)) {
            die('Access denied for this import method');
        }

        $importHelper = new ImportHelper();

        if (empty($function) || !$importHelper->$function()) {
            $this->import();

            return;
        }

        if (in_array($function, ['file', 'textarea'])) {
            $importFile = ACYM_MEDIA.'import'.DS.acym_getVar('cmd', 'acym_import_filename');
            if (file_exists($importFile)) {
                $importContent = file_get_contents($importFile);
            }

            if (empty($importContent)) {
                acym_enqueueMessage(acym_translation('ACYM_EMPTY_TEXTAREA'), 'error');
                $this->import();
            } else {
                acym_setVar('layout', 'genericimport');
                $this->breadcrumb[acym_translation('ACYM_IMPORT')] = acym_completeLink('users&task=import');
                parent::display();
            }
        } else {
            $this->listing();
        }
    }

    public function ajaxEncoding(): void
    {
        acym_setVar('layout', 'ajaxencoding');

        $data = [];

        ob_start();
        parent::display($data);

        $data = [
            'preview' => ob_get_clean(),
        ];

        acym_sendAjaxResponse('', $data);
    }

    public function finalizeImport(): void
    {
        wp_verify_nonce(acym_getVar('cmd', '_wpnonce'), 'acymnonce') || die('Invalid Token');

        $importHelper = new ImportHelper();
        $importHelper->finalizeImport();

        $this->listing();
    }

    public function downloadImport(): void
    {
        $filename = acym_getVar('cmd', 'filename');
        if (!file_exists(ACYM_MEDIA.'import'.DS.$filename.'.csv')) {
            return;
        }
        $exportHelper = new ExportHelper();
        $exportHelper->setDownloadHeaders($filename);

        // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Downloading a file.
        echo file_get_contents(ACYM_MEDIA.'import'.DS.$filename.'.csv');
        exit;
    }

    public function getColumnsFromTable(): void
    {
        $tableName = acym_secureDBColumn(acym_getVar('string', 'tablename', ''));
        if (empty($tableName)) {
            exit;
        }

        echo '<option value=""></option>';

        $columns = acym_getColumns($tableName, false, false);
        foreach ($columns as $oneColumn) {
            echo '<option value="'.esc_attr($oneColumn).'">'.esc_html($oneColumn).'</option>';
        }

        exit;
    }
}