<?php
namespace App\Service\Informe;

use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\IOFactory;

class Informe
{
    protected $spreadsheet;
    public function createSpreadsheet()
    {
        $this->spreadsheet = new Spreadsheet();
        return $this;
    }
    protected function formatArray(array $data)
    {
        $maxCols = 0;
        foreach ($data as $row) {
            if (!is_array($row)) {
                continue;
            }
            if (count($row) > $maxCols) {
                $maxCols = count($row);
            }
        }
        foreach ($data as &$row) {
            if (!is_array($row)) {
                $row = [$row];
            }
            if (count($row) < $maxCols) {
                $row = array_merge($row, array_fill(0, $maxCols - count($row), ''));
            }
        }
        return $data;
    }
    public function addArray(array $data, string $start = 'A1')
    {
        $this->spreadsheet->getActiveSheet()->fromArray($this->formatArray($data), null, $start);
        return $this;
    }
    public function send(string $filename)
    {
        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header("Content-Disposition: attachment;filename=\"{$filename}\"");
        header('Cache-Control: max-age=0');

        $writer = IOFactory::createWriter($this->spreadsheet, 'Xlsx');
        $writer->save('php://output');
    }
}