<?php

namespace PhpOffice\PhpSpreadsheet;

use PhpOffice\PhpSpreadsheet\Cell\AddressRange;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;

class CellReferenceHelper
{
    /**
     * @var string
     */
    protected $beforeCellAddress;

    /**
     * @var int
     */
    protected $beforeColumn;

    /**
     * @var int
     */
    protected $beforeRow;

    /**
     * @var int
     */
    protected $numberOfColumns;

    /**
     * @var int
     */
    protected $numberOfRows;

    public function __construct(string $beforeCellAddress = 'A1', int $numberOfColumns = 0, int $numberOfRows = 0)
    {
        $this->beforeCellAddress = str_replace('$', '', $beforeCellAddress);
        $this->numberOfColumns = $numberOfColumns;
        $this->numberOfRows = $numberOfRows;

        // Get coordinate of $beforeCellAddress
        [$beforeColumn, $beforeRow] = Coordinate::coordinateFromString($beforeCellAddress);
        $this->beforeColumn = (int) Coordinate::columnIndexFromString($beforeColumn);
        $this->beforeRow = (int) $beforeRow;
    }

    public function beforeCellAddress(): string
    {
        return $this->beforeCellAddress;
    }

    public function refreshRequired(string $beforeCellAddress, int $numberOfColumns, int $numberOfRows): bool
    {
        return $this->beforeCellAddress !== $beforeCellAddress ||
            $this->numberOfColumns !== $numberOfColumns ||
            $this->numberOfRows !== $numberOfRows;
    }

    public function updateCellReference(string $cellReference = 'A1', bool $includeAbsoluteReferences = false): string
    {
        if (Coordinate::coordinateIsRange($cellReference)) {
            throw new Exception('Only single cell references may be passed to this method.');
        }

        // Get coordinate of $cellReference
        [$newColumn, $newRow] = Coordinate::coordinateFromString($cellReference);
        $newColumnIndex = (int) Coordinate::columnIndexFromString(str_replace('$', '', $newColumn));
        $newRowIndex = (int) str_replace('$', '', $newRow);

        $absoluteColumn = $newColumn[0] === '$' ? '$' : '';
        $absoluteRow = $newRow[0] === '$' ? '$' : '';
        // Verify which parts should be updated
        if ($includeAbsoluteReferences === false) {
            $updateColumn = (($absoluteColumn !== '$') && $newColumnIndex >= $this->beforeColumn);
            $updateRow = (($absoluteRow !== '$') && $newRowIndex >= $this->beforeRow);
        } else {
            $updateColumn = ($newColumnIndex >= $this->beforeColumn);
            $updateRow = ($newRowIndex >= $this->beforeRow);
        }

        // Create new column reference
        if ($updateColumn) {
            $newColumn = $this->updateColumnReference($newColumnIndex, $absoluteColumn);
        }

        // Create new row reference
        if ($updateRow) {
            $newRow = $this->updateRowReference($newRowIndex, $absoluteRow);
        }

        // Return new reference
        return "{$newColumn}{$newRow}";
    }

    public function cellAddressInDeleteRange(string $cellAddress): bool
    {
        [$cellColumn, $cellRow] = Coordinate::coordinateFromString($cellAddress);
        $cellColumnIndex = Coordinate::columnIndexFromString($cellColumn);
        //    Is cell within the range of rows/columns if we're deleting
        if (
            $this->numberOfRows < 0 &&
            ($cellRow >= ($this->beforeRow + $this->numberOfRows)) &&
            ($cellRow < $this->beforeRow)
        ) {
            return true;
        } elseif (
            $this->numberOfColumns < 0 &&
            ($cellColumnIndex >= ($this->beforeColumn + $this->numberOfColumns)) &&
            ($cellColumnIndex < $this->beforeColumn)
        ) {
            return true;
        }

        return false;
    }

    protected function updateColumnReference(int $newColumnIndex, string $absoluteColumn): string
    {
        $newColumn = Coordinate::stringFromColumnIndex(min($newColumnIndex + $this->numberOfColumns, AddressRange::MAX_COLUMN_INT));

        return "{$absoluteColumn}{$newColumn}";
    }

    protected function updateRowReference(int $newRowIndex, string $absoluteRow): string
    {
        $newRow = $newRowIndex + $this->numberOfRows;
        $newRow = ($newRow > AddressRange::MAX_ROW) ? AddressRange::MAX_ROW : $newRow;

        return "{$absoluteRow}{$newRow}";
    }
}

• [D] Calculation
• [D] Cell
• [D] Chart
• [D] Collection
• [D] Document
• [D] Helper
• [D] Reader
• [D] RichText
• [D] Shared
• [D] Style
• [D] Worksheet
• [D] Writer
• [F] CellReferenceHelper.php
  Delete
• [F] Comment.php
  Delete
• [F] DefinedName.php
  Delete
• [F] Exception.php
  Delete
• [F] HashTable.php
  Delete
• [F] IComparable.php
  Delete
• [F] IOFactory.php
  Delete
• [F] NamedFormula.php
  Delete
• [F] NamedRange.php
  Delete
• [F] ReferenceHelper.php
  Delete
• [F] Settings.php
  Delete
• [F] Spreadsheet.php
  Delete
• [F] Theme.php
  Delete

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                        Request Example (guzzle)
                        

                        
                            
<?php
                            
 require_once('vendor/autoload.php');
                            
 $client = new \GuzzleHttp\Client();
                            
 $response = $client->request('POST', $base_url. 'v1/generate-token', [
                            
'headers' => [
                            
  'accept' => 'application/json',
                            
  'content-type' => 'application/json',
                            
 ],
                            
'form_params' => [
                            
  'client_id'     => '$client_id',
                            
  'secret_id'     => 'secret_id',
                            
  'env'           => 'env',
                            
  'merchant_id'   => 'merchant_id',
                            
 ],
                            
                            
]);
                            
echo $response->getBody();
                        
                    
                

                    
                        
**Response: SUCCESS (200 OK)**
                        
{
                        
 "message": {
                        
 "success": [
                        
  "Successfully token is generated"
                        
 ]
                        
},
                        
"data": {
                        
 "token":"eyJpdiI6InpkczhjTjhQdVhUL2lKQ0pSUUx6aUE9P
SIsInZhbHVlIjoiVGVBTVBDTXltbjNZcEIvdEJveGpTSno3TU5NRUtn
VkhCZ1pHTFNCUnZGQ2UxMnYxN202cEE1YVRDTEFsc0ZERExoTjdtL0dTL2x
oU3QzeUJJOExiMUx5T0w1L0llUXhTUkU1cWVLWEdEbEplb0dKNXcwbTNRM0
VxdkUwYzZuNFdtNkhMQ0pRZysyNWkvdzBxSlBoSVBSOGFTekNnR2RXNHVtc
G9lMGZOTmNCcm1hR3c5Sk9KTnB4Y3ltZDl6cm90MThrR21Ca3B1azc3bXRi
Q0J6SW96UVo1elNkU1ZqeE05bTcwWGp1MEUxWlJFdnNWTmpSbnVpeW92b2U
4dXZkUGgyb1VmK0luaGdyaFlsVTZlcVpVRnZlTG1DeFF6Ykk2T2h6Z3Jzbn
IyNHpNdHowSE5JdDR0Y0pZT20zUm1XYW8iLCJtYWMiOiJlY2M4NGE1OGUzYz
kzYzk0YzljNmVmNjE0YWI0ZDIwOGI3NDQ2YWEyY2ZhNzc0NzE4ZmY1ZmYyMz

                        IyZmQzNDY1IiwidGFnIjoiIn0=",
                        
},
                        
"type": "success"
                        
}
                    
                

                    
                        
**Response: ERROR (400 FAILED)**
                        
{
                        
 "message": {
                        
 "error": [
                        
  "Invalid credentials."
                        
 ]
                        
},
                        
"data": null,
                        
"type": "error"
                        
}