<?php

namespace App\Services\Analytics\Export;

use App\Exports\Sheets\ArraySheetExport;
use App\Services\Analytics\AnalyticsResult;
use App\Services\Analytics\Column;
use Maatwebsite\Excel\Concerns\WithMultipleSheets;

class AnalyticsExcelExport implements WithMultipleSheets
{
    public function __construct(
        private readonly AnalyticsResult $result,
        private readonly string $title,
    ) {}

    public function sheets(): array
    {
        $rows = [array_map(fn (Column $c) => $c->label, $this->result->columns)];

        if ($this->result->rows === []) {
            $rows[] = ['Нет данных за выбранный период'];
        }

        foreach ($this->result->rows as $row) {
            $line = [];
            foreach ($this->result->columns as $column) {
                $line[] = $row[$column->key] ?? '';
            }
            $rows[] = $line;
        }

        return [new ArraySheetExport($this->sheetTitle(), $rows)];
    }

    private function sheetTitle(): string
    {
        return mb_substr(preg_replace('/[\\\\\/\?\*\[\]:]/', ' ', $this->title), 0, 31) ?: 'Отчёт';
    }
}