<?php

namespace App\Jobs;

use App\Mail\ExportCodesUniques;
use App\Mail\JobFailed;
use App\Models\Codes;
use App\Models\Settings;
use Exception;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\Mail;

class ProcessExportCodesUniques implements ShouldQueue
{
    use Dispatchable;
    use InteractsWithQueue;
    use Queueable;
    use SerializesModels;

    private $nbCodeFic, $nbCodeTot, $nbCodeLigne;

    /**
     * Create a new job instance.
     *
     * @return void
     */
    public function __construct($nbCodeFic, $nbCodeTot, $nbCodeLigne)
    {
        $this->nbCodeFic   = $nbCodeFic;
        $this->nbCodeTot   = $nbCodeTot;
        $this->nbCodeLigne = $nbCodeLigne;
    }

    /**
     * Execute the job.
     *
     * @return void
     */
    public function handle()
    {
        $nbCodeFic   = $this->nbCodeFic; // Nombre de code par fichier
        $nbCodeTot   = $this->nbCodeTot; // Nombre total de code à exporter
        $nbCodeLigne = $this->nbCodeLigne; // Nombre de code par ligne

        $totalExportedCodes   = 0;
        $currentFilename      = 1;
        $currentExportedCodes = 0;
        $currentLineCodes     = ($nbCodeLigne === 1 ? 1 : 0);

        $this->process($nbCodeFic, $nbCodeTot, $nbCodeLigne, $totalExportedCodes, $currentFilename, $currentExportedCodes, $currentLineCodes);

        // Compression des fichiers
        $zip = new \ZipArchive();
        if ($zip->open(storage_path('export_codes_uniques/') . "CodesUniques_" . date('dmY') . ".zip", \ZipArchive::CREATE) === true) {
            if ($handle = opendir(storage_path('export_codes_uniques/tmp'))) {
                while (false !== ($file_to_zip = readdir($handle))) {
                    if (pathinfo($file_to_zip, PATHINFO_EXTENSION) != 'csv') {
                        continue;
                    }
                    $zip->addFile(storage_path('export_codes_uniques/tmp/') . $file_to_zip, "$file_to_zip");
                }
                closedir($handle);
            }
            $zip->close();
        }

        // On vide le dossier temporaire des fichiers csv
        if ($handle = opendir(storage_path('export_codes_uniques/tmp'))) {
            while (false !== ($file_to_zip = readdir($handle))) {
                if (pathinfo($file_to_zip, PATHINFO_EXTENSION) != 'csv') {
                    continue;
                }
                unlink(storage_path('export_codes_uniques/tmp/') . $file_to_zip);
            }
            closedir($handle);
        }

        // Envoi de mail à MAIL_ADMIN avec le nom du ZIP "CodesUniques_". date('dmY') .".zip"
        Mail::to(config('mail.MAIL_ADMIN'))->send(new ExportCodesUniques(Settings::find(1)->name, $nbCodeFic, $nbCodeTot, $nbCodeLigne));
    }

    private function process($nbCodeFic, $nbCodeTot, $nbCodeLigne, $totalExportedCodes, $currentFilename, $currentExportedCodes, $currentLineCodes, $lastExportedCodeId = null)
    {
        $paginate = config('codes.paginate');

        if ($nbCodeTot < $paginate) {
            $nbCodeToRetrieve = $nbCodeTot;
        } else {
            if ($totalExportedCodes + $paginate > $nbCodeTot) {
                $nbCodeToRetrieve = $nbCodeTot - $totalExportedCodes;
            } else {
                $nbCodeToRetrieve = $paginate;
            }
        }

        if ($lastExportedCodeId === null) {
            $codes = Codes::where('code_exported', 0)->take($nbCodeToRetrieve)->get();
        } else {
            $codes = Codes::where([
                ['code_exported', '=', 0],
                ['id', '>', $lastExportedCodeId]
            ])->take($nbCodeToRetrieve)->get();
        }

        $countCodes = count($codes);

        $exportedCodesId = [];

        foreach ($codes as $k => $code) {
            if ($currentExportedCodes < $nbCodeTot) {
                if ($currentLineCodes === ($nbCodeLigne === 1 ? 1 : $nbCodeLigne - 1)) {
                    file_put_contents(storage_path('export_codes_uniques/tmp/') . $currentFilename . ".csv", $code->code_unique . PHP_EOL, FILE_APPEND);
                    $totalExportedCodes++;
                    $currentExportedCodes++;
                    $currentLineCodes = ($nbCodeLigne === 1 ? 1 : 0);
                } else {
                    file_put_contents(storage_path('export_codes_uniques/tmp/') . $currentFilename . ".csv", $code->code_unique . ";", FILE_APPEND);
                    $totalExportedCodes++;
                    $currentExportedCodes++;
                    $currentLineCodes++;
                }

                array_push($exportedCodesId, $code->id);
                $lastExportedCodeId = $code->id;

                if ($currentExportedCodes === $nbCodeFic) {
                    $currentFilename++;
                    $currentExportedCodes = 0;
                }
                if ((($k + 1) === $countCodes) && $totalExportedCodes < $nbCodeTot) {
                    Codes::whereIn('id', $exportedCodesId)->update(['code_exported' => 1]);
                    return $this->process($nbCodeFic, $nbCodeTot, $nbCodeLigne, $totalExportedCodes, $currentFilename, $currentExportedCodes, $currentLineCodes, $lastExportedCodeId);
                }
                if (($k + 1) === $countCodes) {
                    Codes::whereIn('id', $exportedCodesId)->update(['code_exported' => 1]);
                }
            }
        }
    }

    public function failed(Exception $exception)
    {
        Mail::to(config('mail.MAIL_ADMIN'))->send(new JobFailed("ProcessExportCodeUnique", ['message' => $exception->getMessage(), 'trace' => $exception->getTraceAsString()]));
    }
}