<?php

namespace App\Exports;

use App\Models\Transmittal;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\View;
use Maatwebsite\Excel\Concerns\Exportable;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\FromView;
use Maatwebsite\Excel\Concerns\ShouldAutoSize;
use Maatwebsite\Excel\Concerns\WithDefaultStyles;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Concerns\WithMapping;
use PhpOffice\PhpSpreadsheet\Exception;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Style;

class TransmittalsExport implements FromCollection, WithMapping, ShouldAutoSize, ShouldQueue, WithDefaultStyles, WithHeadings
{

    use Exportable, Queueable, SerializesModels;


    public function __construct(
        private readonly array $id
    )
    {}


    public function view(): \Illuminate\Contracts\View\View
    {
        $transmittals = Transmittal::query()->with(['client','branch', 'files.notes', 'files.remarks'])->whereIn('id', Arr::flatten($this->id))->get();
        return View::make('transmittal.export.transmittal-export-table')->with(['transmittals' => $transmittals]);
    }


    /**
     * @throws Exception
     */
    public function defaultStyles(Style $defaultStyle)
    {
        return $defaultStyle->applyFromArray([
            'alignment' => [
                'horizontal' => Alignment::HORIZONTAL_CENTER,
                'vertical' => Alignment::VERTICAL_CENTER,
            ],

        ]);
    }

    public function headings(): array
    {
        return [
            'series',
            'files',
            'notes',
            'remarks'
        ];
    }

    public function collection()
    {
        $transmittals =  Transmittal::query()->with(['client','branch', 'files.notes', 'files.remarks'])
            ->withCount(['files','notes','remarks'])->with(['files' => function($files) {
                $files->withCount(['notes','remarks']);
            }])
            ->whereIn('id', Arr::flatten($this->id))->get();


        return $transmittals;
    }

    public function map($transmittal): array
    {


        $data = [];


        $firstFile = $transmittal->files->first();


        $data[] = [$transmittal->series, $firstFile?->description, $firstFile->notes->first()?->comment, $firstFile->remarks->first()?->remark];

        $fileRowCounter = 0;
        foreach ($transmittal->files as $file) {
            $notes = $file->notes->pluck('comment');
            $remarks = $file->remarks->pluck('remark');

            $fileNoteCount = count($notes);
            $fileRemarkCount = count($remarks);

            $fileRowCount = $fileNoteCount;
            if($fileRemarkCount > $fileNoteCount) {
                $fileRowCount = $fileRemarkCount;
            }


            if($fileRowCounter != 0) {
                $data[] = [
                    '',
                    $file->description ,
                    $notes[$fileRowCounter - 1] ?? '',
                    $remarks[$fileRowCounter - 1] ?? '',
                ];

                for ($i = 0; $i < $fileRowCount; $i++) {
                    $data[] = [
                        '',
                        '',
                        $notes[$i] ?? '',
                        $remarks[$i] ?? '',
                    ];
                }
            }

            $fileRowCounter++;
        }


        return $data;
    }
}