<?php

namespace App\Exports;

use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Concerns\ShouldAutoSize;
use Maatwebsite\Excel\Concerns\WithTitle;
use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Events\AfterSheet;
use PhpOffice\PhpSpreadsheet\Worksheet\PageSetup;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Fill;
use PhpOffice\PhpSpreadsheet\Style\NumberFormat;

class FormExport implements FromCollection, WithTitle, ShouldAutoSize, WithEvents
{
    private $data;
    private $isTemplate, $titleExcel, $inventoryYear;

    private $instansi;

    public function __construct($data)
    {
        $this->data = $data;
        $this->isTemplate = $data['isTemplate'];
        $this->titleExcel = $data['titleExcel'];
        $this->inventoryYear = $data['inventoryYear'];
        
        $this->instansi = $data['instansi'];
    }

    public function collection()
    {
        // Fetch necessary data
        $data = $this->data;
        $formDetails = $data['formDetails'];
        $unitsMap = $data['unitsMap'];
        $activityFormDetails = $data['activityFormDetails'];

        $excelData = collect();

        if (!$this->isTemplate) {
            // Add title row
            $titleRow = [$this->titleExcel];
            $excelData->push($titleRow);
            $excelData->push(['']);

            // Add print date row
            $tanggalCetakRow = ['Tanggal Cetak: ' . now()->format('Y-m-d')];
            $excelData->push($tanggalCetakRow);
            $excelData->push(['']);
        }

        // Add header row
        $header = ['TAHUN'];
        foreach ($formDetails as $detail) {
            $activityName = $detail->activity ? $detail->activity->name : 'N/A';
            $unitCode = $unitsMap[$detail->unit_code]->code ?? '';
            $header[] = $activityName . "\n" . '(' . $unitCode . ')';
        }
        $excelData->push($header);

        // Add data rows
        $years = activityYearRange($this->inventoryYear);
        foreach ($years as $year) {
            $row = [$year];
            foreach ($formDetails as $detail) {
                $activityValue = isset($activityFormDetails[$year])
                    ? $activityFormDetails[$year]
                    ->where('activity_code', $detail->activity_code)
                    ->where('activity_unit_code', $detail->unit_code)
                    ->first()->activity_value ?? ''
                    : '';

                $row[] = $activityValue;
            }
            $excelData->push($row);
        }

        return $excelData;
    }

    public function title(): string
    {
        return 'Template'; // Sheet name
    }

    public function registerEvents(): array
    {
        return [
            AfterSheet::class => function (AfterSheet $event) {
                // Set page properties
                $event->sheet->getPageSetup()->setOrientation(PageSetup::ORIENTATION_LANDSCAPE);
                $event->sheet->getPageSetup()->setFitToWidth(1);
                $event->sheet->getPageSetup()->setFitToHeight(0);
                $event->sheet->getPageMargins()->setTop(0.5);
                $event->sheet->getPageMargins()->setBottom(0.5);
                $event->sheet->getPageMargins()->setLeft(0.5);
                $event->sheet->getPageMargins()->setRight(0.5);
                $event->sheet->getPageSetup()->setPaperSize(PageSetup::PAPERSIZE_A4);
                $event->sheet->getPageSetup()->setHorizontalCentered(true);
                $event->sheet->getPageSetup()->setVerticalCentered(true);

                if (!$this->isTemplate) {
                    // Merge cells for title and print date
                    // $event->sheet->mergeCells('A1:' . $event->sheet->getHighestColumn() . '1');
                    // $event->sheet->mergeCells('A3:' . $event->sheet->getHighestColumn() . '3');

                    $event->sheet->mergeCells('A1:' . 'S1');
                    $event->sheet->mergeCells('A3:' . 'S3');
                }

                // Set alignment and make header row bold and centered
                $headerRow = $this->isTemplate == 1 ? 'A1' : 'A5';
                $valueRow = $this->isTemplate == 1 ? 1 : 5;
                $event->sheet->getStyle($headerRow . ':' . $event->sheet->getHighestColumn() . $valueRow)
                    ->applyFromArray([
                        'font' => [
                            'bold' => true,
                        ],
                        'alignment' => [
                            'horizontal' => Alignment::HORIZONTAL_CENTER,
                            'vertical' => Alignment::VERTICAL_CENTER,
                            'wrapText' => true, // Ensure wrap text is enabled for newlines
                        ],
                    ]);

                // Apply borders to the table
                $event->sheet->getDelegate()->getStyle($headerRow . ':' . $event->sheet->getDelegate()->getHighestColumn() . $event->sheet->getDelegate()->getHighestRow())
                    ->applyFromArray([
                        'borders' => [
                            'allBorders' => [
                                'borderStyle' => Border::BORDER_THIN,
                                'color' => ['argb' => 'FF000000'],
                            ],
                        ],
                    ]);

                // Auto size columns starting from A onwards
                $highestColumn = $event->sheet->getDelegate()->getHighestColumn();
                $columns = $this->generateColumnsRange('A', $highestColumn);

                $valueRow = $this->isTemplate == 1 ? '2' : '6';
                foreach ($columns as $column) {
                    $event->sheet->getDelegate()->getColumnDimension($column)->setAutoSize(true);

                    // Apply number format to data columns (B onwards)
                    if ($column != 'A') {
                        $highestRow = $event->sheet->getDelegate()->getHighestRow($column);
                        for ($row = $valueRow; $row <= $highestRow; $row++) {
                            $cellValue = $event->sheet->getCell($column . $row)->getValue();
                            $formatCode = NumberFormat::FORMAT_GENERAL;
                            if (!$this->isTemplate) {
                                if (is_numeric($cellValue)) {
                                    $formatCode = floor($cellValue) != $cellValue ? '#,##0.0###############' : '#,##0';
                                }
                            }

                            $event->sheet->getStyle($column . $row)->getNumberFormat()->setFormatCode($formatCode);
                        }

                        if ($this->isTemplate) {
                            $event->sheet->getStyle($column . '2:' . $column . $event->sheet->getDelegate()->getHighestRow())
                                ->applyFromArray([
                                    'fill' => [
                                        'fillType' => Fill::FILL_SOLID,
                                        'color' => ['argb' => 'FFFFFF00'],
                                    ],
                                ]);
                        }
                    }
                }
            },
        ];
    }

    function generateColumnsRange($start, $end)
    {
        $columns = [];
        $current = $start;

        while ($current !== $end) {
            $columns[] = $current;
            $current++;
        }
        $columns[] = $end;

        return $columns;
    }
}