<?php

declare(strict_types=1);
/**
 * Calendar App
 *
 * @copyright 2021 Anna Larch <anna.larch@gmx.net>
 *
 * @author Anna Larch <anna.larch@gmx.net>
 * @author Richard Steinmetz <richard@steinmetz.cloud>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or any later version.
 *
 * This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

namespace OCA\Gestion\Service;

use OCA\Gestion\Db\Bdd;
use OCA\Gestion\Helpers\FileExportHelpers;
use Psr\Log\LoggerInterface;

class ExportClientStatisticService
{
    /** @var Bdd */
    private $gestionBdd;

    /** @var LoggerInterface */
    private $logger;

    public function __construct(
        Bdd $gestionBdd,
        LoggerInterface $logger
    ) {
        $this->logger = $logger;
        $this->gestionBdd = $gestionBdd;
    }

    public function getFileName(array $clientIds)
    {
        $filename = "";
        $clients = $this->gestionBdd->getClientsByClientsID($clientIds);
        foreach($clients as $client) {
            $filename .= $client['client_nom'] . '-' . $client['client_entreprise'] . '--';
        }
        $filename = rtrim($filename, '-');
        $filename = str_replace(' ', '-', $filename);
        $filename = str_replace('&nbsp;', '-', $filename);
        return $filename;
    }

    public function getExportClientFileHeader(): string
    {
        $fileHeader =
        'CLIENT'.';'.
        'MOIS'.';'.
        'ANNEE'.';'.
        'NB DE DEFUNTS'.';';

        $produitList = $this->gestionBdd->getProduitsListAsArray();
        foreach($produitList as $produit) {
            $fileHeader .= FileExportHelpers::FormatTextForExport($produit['reference']).';';
        }
        $fileHeader .= 'TOTAL HT'.';'."\n";
        return $fileHeader;
    }

    public function populateExportDataIntoFileContent(array $exportData, string $fileContent): string
    {
        foreach($exportData as $clientId => $clientData) {
            $clientName = $clientData["client_name"];
            $clientStatPerMonth = $clientData["client_data"];
            $totalPrice = 0;
            if(!empty($clientStatPerMonth)) {
                foreach($clientStatPerMonth as $month => $stat) {
                    $stat["client_name"] = $clientName;
                    $totalPrice += $stat["total_price"];
                    $fileContent = $this->populateClientStatDataIntoFileContent($fileContent, $month, $stat);
                }
                $fileContent = $this->populateTotalPriceIntoFileContent($fileContent, $totalPrice, count($stat["products"]));
            }
        }
        return $fileContent;
    }

    private function populateTotalPriceIntoFileContent(string $fileContent, $totalPrice, $productsCount)
    {
        $fileContent = $fileContent.
        ''.';'.
        ''.';'.
        ''.';'.
        ''.';';
        while($productsCount > 0) {
            $fileContent .= ''.';';
            $productsCount--;
        }
        $fileContent .= "$totalPrice".";"."\n";
        return $fileContent;
    }

    private function populateClientStatDataIntoFileContent(string $fileContent, $month, array $statPerMonth)
    {
        $yearValue = $statPerMonth["year"];
        $defuntCount = $statPerMonth["defunt_count"];
        $products = $statPerMonth["products"];
        $priceTotal = $statPerMonth["total_price"];

        $fileContent = $fileContent.
        FileExportHelpers::FormatTextForExport($statPerMonth['client_name']).';'.
        "$month".';'.
        "$yearValue".';'.
        "$defuntCount".';';

        foreach($products as $productCount) {
            $fileContent .= "$productCount".";";
        }
        $fileContent .= "$priceTotal".';'."\n";
        return $fileContent;

    }
}