<?php

namespace App\Exports;

use Maatwebsite\Excel\Concerns\FromArray;
use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Events\AfterSheet;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Style\Fill;

class ZenovaReportExport implements FromArray, WithEvents
{
    protected $groups;
    protected $body;
    protected $totals;

    public function __construct(array $groups, array $body, array $totals)
    {
        $this->groups = $groups;
        $this->body = $body;
        $this->totals = $totals;
    }

    public function array(): array
    {
        $groupRow = [];
        $labelRow = [];
        foreach ($this->groups as $group) {
            $first = true;
            foreach ($group['columns'] as $column) {
                $groupRow[] = $first ? $group['label'] : '';
                $labelRow[] = $column['label'];
                $first = false;
            }
        }

        $rows = [$groupRow, $labelRow];
        foreach ($this->body as $line) {
            $rows[] = $line;
        }
        if (!empty($this->totals)) {
            $rows[] = $this->totals;
        }

        return $rows;
    }

    public function registerEvents(): array
    {
        return [
            AfterSheet::class => function (AfterSheet $event) {
                $sheet = $event->sheet->getDelegate();
                $rows = $this->array();
                $rowCount = max(1, count($rows));
                $colCount = 0;
                foreach ($this->groups as $group) {
                    $colCount += count($group['columns']);
                }
                if ($colCount < 1) {
                    return;
                }

                $lastCol = Coordinate::stringFromColumnIndex($colCount);
                $colors = [
                    'demo' => 'FFF2CC',
                    'day' => 'DDEBF7',
                    'yesterday' => 'E2EFDA',
                    'today' => 'C6EFCE',
                    'mtd' => 'FCE4D6',
                    'ytd' => 'D9E2F3',
                ];

                $sheet->getStyle('A1:' . $lastCol . $rowCount)->applyFromArray([
                    'font' => [
                        'name' => 'Calibri',
                        'size' => 11,
                    ],
                    'borders' => [
                        'allBorders' => [
                            'borderStyle' => Border::BORDER_THIN,
                            'color' => ['rgb' => 'B0B0B0'],
                        ],
                    ],
                    'alignment' => [
                        'vertical' => Alignment::VERTICAL_CENTER,
                    ],
                ]);

                $col = 1;
                foreach ($this->groups as $group) {
                    $span = count($group['columns']);
                    $start = Coordinate::stringFromColumnIndex($col);
                    $end = Coordinate::stringFromColumnIndex($col + $span - 1);
                    if ($span > 1) {
                        $sheet->mergeCells($start . '1:' . $end . '1');
                    }
                    $sheet->getStyle($start . '1:' . $end . '2')->applyFromArray([
                        'font' => [
                            'bold' => true,
                            'color' => ['rgb' => '000000'],
                        ],
                        'fill' => [
                            'fillType' => Fill::FILL_SOLID,
                            'startColor' => ['rgb' => $colors[$group['tone']] ?? 'FFFFFF'],
                        ],
                        'alignment' => [
                            'horizontal' => Alignment::HORIZONTAL_CENTER,
                            'vertical' => Alignment::VERTICAL_CENTER,
                            'wrapText' => true,
                        ],
                    ]);

                    foreach ($group['columns'] as $offset => $column) {
                        $letter = Coordinate::stringFromColumnIndex($col + $offset);
                        $width = $column['type'] === 'text' ? 24 : 16;
                        $sheet->getColumnDimension($letter)->setWidth($width);
                        if ($rowCount < 3) {
                            continue;
                        }
                        $dataRange = $letter . '3:' . $letter . $rowCount;
                        if ($column['type'] === 'text') {
                            $sheet->getStyle($dataRange)->getAlignment()->setHorizontal(Alignment::HORIZONTAL_LEFT);
                        } elseif ($column['type'] === 'percent') {
                            $sheet->getStyle($dataRange)->getNumberFormat()->setFormatCode('0.00"%"');
                            $sheet->getStyle($dataRange)->getAlignment()->setHorizontal(Alignment::HORIZONTAL_RIGHT);
                        } else {
                            $sheet->getStyle($dataRange)->getNumberFormat()->setFormatCode('#,##0');
                            $sheet->getStyle($dataRange)->getAlignment()->setHorizontal(Alignment::HORIZONTAL_RIGHT);
                        }
                    }

                    $col += $span;
                }

                $sheet->getRowDimension(1)->setRowHeight(22);
                $sheet->getRowDimension(2)->setRowHeight(36);
                $sheet->freezePane('A3');

                if (!empty($this->totals)) {
                    $sheet->getStyle('A' . $rowCount . ':' . $lastCol . $rowCount)->applyFromArray([
                        'font' => ['bold' => true],
                        'fill' => [
                            'fillType' => Fill::FILL_SOLID,
                            'startColor' => ['rgb' => 'F2F2F2'],
                        ],
                    ]);
                }
            },
        ];
    }
}