[HOTFIX][BE]: Use old php native function to count PDF pages (#299)

Before Condtion:
In some condition, when count pdf files by using $pdf->pageCount() with
spatiePDF modules. It'll run issue in some of PDF files when it can't
repopulate with Ghostscript and return error;

`PDFDelegateFailed [ghostscript library 10.04] -sstdout=%stderr -dQUIET
-dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000
-dAlignToPixels=0 -dGridFitTT=2 '-sDEVICE=pngalpha' -dTextAlphaBits=4
-dGraphicsAlphaBits=4 '-r2.0x2.0' -dPrinted=false
'-sOutputFile=/tmp/magick-eLtRTJYemQEHIfT1hu3Tuv42uBnodDfK%d'
'-f/tmp/magick-Coayb8omrqMkD5YVdcNfHgbCobmeJmeK'
'-f/tmp/magick-gjttaXChInmMeYFp5Fq7DgXYBefCiceK': (null)' @
error/pdf.c/ReadPDFImage/712`

The backend itself doesn't crash, cause error already handled properly.
But it'll be stopper to main process due fail to get total PDF pages.

Next Condition:
Use old php native function to count PDF pages from previous method, to
count properly PDF pages in the mean time

Author: Nicklas373

app/Helpers/AppHelper.php

@@ -42,6 +42,13 @@ function convert($size,$unit)
         }
     }
 
+    function count($path)
+    {
+        $pdf = file_get_contents($path);
+        $number = preg_match_all("/\/Page\W/", $pdf, $dummy);
+        return $number;
+    }
+
     function folderSize($dir)
     {
         $size = 0;

app/Http/Controllers/Api/Core/convertController.php

@@ -22,7 +22,6 @@
 use Ilovepdf\ImagepdfTask;
 use Ilovepdf\OfficepdfTask;
 use Ilovepdf\PdfjpgTask;
-use Spatie\PdfToImage\Pdf;
 use Symfony\Component\Process\Process;
 use Symfony\Component\Process\Exception\ProcessFailedException;
 use Symfony\Component\Process\Exception\RuntimeException;
@@ -507,43 +506,8 @@ public function convert(Request $request) {
                             $minioUpload = Storage::disk('minio')->get($pdfUpload_Location.'/'.$currentFileName);
                             file_put_contents(Storage::disk('local')->path('public/'.$pdfUpload_Location.'/'.$currentFileName), $minioUpload);
                             $newFilePath = Storage::disk('local')->path('public/'.$pdfUpload_Location.'/'.$currentFileName);
-                            try {
-                                $pdf = new Pdf($newFilePath);
-                                $pdfTotalPages = $pdf->pageCount();
-                                Storage::disk('local')->delete('public/'.$pdfUpload_Location.'/'.$trimPhase1);
-                            } catch (\Exception $e) {
-                                $end = Carbon::parse(AppHelper::instance()->getCurrentTimeZone());
-                                $duration = $end->diff($startProc);
-                                appLogModel::where('groupId', '=', $batchId)
-                                    ->update([
-                                        'errReason' => $e->getMessage(),
-                                        'errStatus' => 'Failed to count total PDF pages'
-                                    ]);
-                                cnvModel::where('groupId', '=', $batchId)
-                                    ->update([
-                                        'result' => false,
-                                        'procEndAt' => AppHelper::instance()->getCurrentTimeZone(),
-                                        'procDuration' => $duration->s.' seconds'
-                                    ]);
-                                NotificationHelper::Instance()->sendErrNotify(
-                                    $currentFileName,
-                                    $newFileSize,
-                                    $batchId,
-                                    'FAIL',
-                                    'cnvToImg',
-                                    'Failed to count total PDF pages',
-                                    $e->getMessage()
-                                );
-                                Storage::disk('local')->delete('public/'.$pdfUpload_Location.'/'.$trimPhase1);
-                                return $this->returnDataMesage(
-                                    400,
-                                    'PDF Convert failed !',
-                                    $e->getMessage(),
-                                    $batchId,
-                                    null,
-                                    'Failed to count total PDF pages'
-                                );
-                            }
+                            $pdfTotalPages = AppHelper::instance()->count($newFilePath);
+                            Storage::disk('local')->delete('public/'.$pdfUpload_Location.'/'.$trimPhase1);
                             try {
                                 $ilovepdfTask = new PdfjpgTask(env('ILOVEPDF_PUBLIC_KEY'),env('ILOVEPDF_SECRET_KEY'));
                                 $ilovepdfTask->setFileEncryption($pdfEncKey);