<?php

namespace App\Traits;

use App\Utilities\Notice;
use Illuminate\Support\Carbon;
use PhpOffice\PhpSpreadsheet\IOFactory;
use PhpOffice\PhpSpreadsheet\Spreadsheet;

trait GrappingToExcel
{
    public static $max = 2000;

    public function import_to_excel(string $folder)
    {
        ini_set('memory_limit', -1);

        if ($this->debug) {
            Notice::note("import $folder to excel", 'g');
        }

        $titel = ucfirst($folder).'_'.Carbon::now()->format('Y-m-d');

        $files = $this->get_tree("$this->data_dir/$folder");

        $files = array_chunk($this->filter($files), self::$max);

        foreach ($files as $key => $value) {

            $has = count($value);
            if (! $key && $has < self::$max) {
                $from = 1;
                $to = $has;
            } elseif (! $key) {
                $from = 1;
                $key++;
                $to = $key * self::$max;
            } elseif ($has == self::$max) {
                $from = $key * self::$max + 1;
                $key++;
                $to = $key * self::$max;
            } else {
                $from = $key * self::$max + 1;
                $to = $key * self::$max + $has;
            }

            $spreadsheet = new Spreadsheet;
            $spreadsheet->getProperties()->setTitle("$titel-$from-$to");
            $activeWorksheet = $spreadsheet->getActiveSheet();

            $column = 1;
            foreach ($value as $file) {
                $data = file_get_contents($file);
                $data = json_decode($data, true);
                $json_string = json_encode($data, JSON_PRETTY_PRINT);

                $arr = explode(PHP_EOL, $json_string);
                $row = 0;
                foreach ($arr as $string) {
                    $row++;
                    $replacedString = preg_replace('/\\\\u([0-9abcdef]{4})/', '&#x$1;', $string);
                    $utf8string = mb_convert_encoding($replacedString, 'UTF-8', 'HTML-ENTITIES');
                    $activeWorksheet->setCellValue([$column, $row], $utf8string);
                }
                $column++;
            }

            $spreadsheet->setActiveSheetIndex(0);
            $writer = IOFactory::createWriter($spreadsheet, 'Xlsx');
            $writer->save("$this->data_dir/$folder/$titel-$from-$to.xlsx");
        }
    }

    protected function filter(array $files, array $types = ['json'])
    {
        $filtered = [];
        foreach ($files as $file) {
            $path_parts = pathinfo($file);
            if (isset($path_parts['extension']) && in_array($path_parts['extension'], $types)) {
                $filtered[] = $file;
            }
        }

        return $filtered;
    }
}