<?php

namespace App\Http\Controllers\Exports;


use Illuminate\Http\Request;
use Maatwebsite\Excel\Excel;
use Illuminate\Support\Facades\Storage;
use App\Classes\General\AWSS3Helper;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Concerns\ShouldAutoSize;
use Maatwebsite\Excel\Concerns\Exportable;
use App\Classes\Modules\Exports\Services\ExportsCompanies;
use App\Classes\Modules\Exports\Services\ExportsSalesInvoicesReport;
use App\Classes\Modules\Exports\Services\ExportsReceivePaymentDepositEntryReport;
use App\Classes\Modules\Exports\Services\ExportsReceivePaymentForOrderReport;
use Carbon\Carbon;

class ExportController
{
    public function companies(Request $request){
        [$startDate, $endDate] = $this->getValidatedDates($request);
        $exporter = new ExportsCompanies($startDate, $endDate);
        return $this->handleExport($exporter, 'IZYIM - Customers Data Report.xls');
    }

    public function salesInvoices(Request $request){
        [$startDate, $endDate] = $this->getValidatedDates($request);
        $exporter = new ExportsSalesInvoicesReport($startDate, $endDate);

        //This will merge both paid and unpaid into a single excel sheet
        // $exporterA = new ExportsSalesInvoicesReport($startDate, $endDate);
        // $exporterB = new ExportsSalesInvoicesReport($startDate, $endDate, true);
        // $exporter = $this->buildCombinedInvoices($exporterA, $exporterB);

        return $this->handleExport($exporter, 'IZYIM - Sales Invoice Report.xls');
    }

    public function salesInvoicesUnpaid(Request $request){
        [$startDate, $endDate] = $this->getValidatedDates($request);
        $exporter = new ExportsSalesInvoicesReport($startDate, $endDate, true);
        return $this->handleExport($exporter, 'IZYIM - Sales Invoice Report (unpaid).xls');
    }

    public function receivePaymentDepositEntry(Request $request){
        [$startDate, $endDate] = $this->getValidatedDates($request);
        $exporter = new ExportsReceivePaymentDepositEntryReport($startDate, $endDate);
        return $this->handleExport($exporter, '11D - IZYIM - RECEIVE PAYMENT (FULL PAYMENT) [AR DEPOSIT ENTRY].xls');
    }

    public function receivePaymentForOrder(Request $request){
        [$startDate, $endDate] = $this->getValidatedDates($request);
        $exporter = new ExportsReceivePaymentForOrderReport($startDate, $endDate);
        return $this->handleExport($exporter, '11R - IZYIM - RECEIVE PAYMENT (FULL PAYMENT) [AR RECEIVE PAYMENT].xls');
    }

    private function getValidatedDates(Request $request): array
    {
        $validated = $request->validate([
            'startDate' => 'nullable|date_format:d-m-Y',
            'endDate' => 'nullable|date_format:d-m-Y|after_or_equal:startDate',
        ]);

        // $startDate = isset($validated['startDate']) && $validated['startDate']
        //     ? Carbon::createFromFormat('d-m-Y', $validated['startDate'])->startOfDay()
        //     : Carbon::now()->subMonth()->startOfDay();

        // $endDate = isset($validated['endDate']) && $validated['endDate']
        //     ? Carbon::createFromFormat('d-m-Y', $validated['endDate'])->endOfDay()
        //     : Carbon::now()->endOfDay();

        $startDate = isset($validated['startDate']) && $validated['startDate']
            ? Carbon::createFromFormat('d-m-Y', $validated['startDate'])->startOfDay()
            : Carbon::now()->startOfMonth()->startOfDay();

        $endDate = isset($validated['endDate']) && $validated['endDate']
            ? Carbon::createFromFormat('d-m-Y', $validated['endDate'])->endOfDay()
            : Carbon::now()->endOfMonth()->endOfDay();

        return [$startDate, $endDate];
    }

    private function handleExport($exporter, string $exportFileName)
    {
        $filesystemDriver = Storage::getDefaultDriver();

        if ($filesystemDriver === 's3') {
            return response([
                'src' => AWSS3Helper::S3Exportable($exportFileName, $exporter)
            ]);
        }

        $response = $exporter->download(
            $exportFileName,
            Excel::XLS,
            ['Content-Type' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet']
        );

        ob_end_clean(); // prevent corrupt download in some environments
        return $response;
    }

    private function buildCombinedInvoices($reportA, $reportB)
    {
        return new class($reportA, $reportB) implements FromCollection, WithHeadings, ShouldAutoSize {

            use Exportable;

            private $reportA;
            private $reportB;

            public function __construct($reportA, $reportB)
            {
                $this->reportA = $reportA;
                $this->reportB = $reportB;
            }

            public function collection()
            {
                $dataA = $this->reportA->query()->get()->map(function ($row) {
                    return $this->reportA->map($row);
                });

                $dataB = $this->reportB->query()->get()->map(function ($row) {
                    return $this->reportB->map($row);
                });

                return $dataA->merge($dataB);
            }

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