<?php

namespace App\Exports;

use Maatwebsite\Excel\Concerns\FromArray;
use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Events\AfterSheet;
use PhpOffice\PhpSpreadsheet\Style\Fill;

class CustomInvoiceExport implements FromArray, WithEvents
{
    protected $data;
    protected $headers;

    public function __construct(array $data, array $headers)
    {
        $this->data = $data;
        $this->headers = $headers;
    }

    public function array(): array
    {
        return $this->data;
    }

    public function registerEvents(): array
    {
        return [
            AfterSheet::class => function (AfterSheet $event) {
                $sheet = $event->sheet->getDelegate();

                // Freeze first row
                $sheet->freezePane('A2');

                // Auto filter for all header columns
                $columnCount = count($this->headers);
                $lastColumnLetter = \PhpOffice\PhpSpreadsheet\Cell\Coordinate::stringFromColumnIndex($columnCount);
                $sheet->setAutoFilter("A1:{$lastColumnLetter}1");

                // Style each header with individual colors
                foreach ($this->headers as $index => $header) {
                    $cell = \PhpOffice\PhpSpreadsheet\Cell\Coordinate::stringFromColumnIndex($index + 1) . '1';
                    $sheet->getStyle($cell)->applyFromArray([
                        'font' => ['bold' => true, 'color'=> ['rgb' => isset($header['fontcolor']) ? $header['fontcolor'] : 'FFFFFF']],
                        'fill' => [
                            'fillType' => Fill::FILL_SOLID,
                            'startColor' => ['rgb' => $header['color']],
                        ],
                    ]);
                }
            },
        ];
    }
}