<?php

namespace PhpOffice\PhpSpreadsheet\Calculation\Engine;

class Logger
{
    /**
     * Flag to determine whether a debug log should be generated by the calculation engine
     *        If true, then a debug log will be generated
     *        If false, then a debug log will not be generated.
     *
     * @var bool
     */
    private $writeDebugLog = false;

    /**
     * Flag to determine whether a debug log should be echoed by the calculation engine
     *        If true, then a debug log will be echoed
     *        If false, then a debug log will not be echoed
     * A debug log can only be echoed if it is generated.
     *
     * @var bool
     */
    private $echoDebugLog = false;

    /**
     * The debug log generated by the calculation engine.
     *
     * @var string[]
     */
    private $debugLog = [];

    /**
     * The calculation engine cell reference stack.
     *
     * @var CyclicReferenceStack
     */
    private $cellStack;

    /**
     * Instantiate a Calculation engine logger.
     */
    public function __construct(CyclicReferenceStack $stack)
    {
        $this->cellStack = $stack;
    }

    /**
     * Enable/Disable Calculation engine logging.
     *
     * @param bool $writeDebugLog
     */
    public function setWriteDebugLog($writeDebugLog): void
    {
        $this->writeDebugLog = $writeDebugLog;
    }

    /**
     * Return whether calculation engine logging is enabled or disabled.
     *
     * @return bool
     */
    public function getWriteDebugLog()
    {
        return $this->writeDebugLog;
    }

    /**
     * Enable/Disable echoing of debug log information.
     *
     * @param bool $echoDebugLog
     */
    public function setEchoDebugLog($echoDebugLog): void
    {
        $this->echoDebugLog = $echoDebugLog;
    }

    /**
     * Return whether echoing of debug log information is enabled or disabled.
     *
     * @return bool
     */
    public function getEchoDebugLog()
    {
        return $this->echoDebugLog;
    }

    /**
     * Write an entry to the calculation engine debug log.
     *
     * @param mixed $args
     */
    public function writeDebugLog(string $message, ...$args): void
    {
        //    Only write the debug log if logging is enabled
        if ($this->writeDebugLog) {
            $message = sprintf($message, ...$args);
            $cellReference = implode(' -> ', $this->cellStack->showStack());
            if ($this->echoDebugLog) {
                echo $cellReference,
                ($this->cellStack->count() > 0 ? ' => ' : ''),
                $message,
                PHP_EOL;
            }
            $this->debugLog[] = $cellReference .
                ($this->cellStack->count() > 0 ? ' => ' : '') .
                $message;
        }
    }

    /**
     * Write a series of entries to the calculation engine debug log.
     *
     * @param string[] $args
     */
    public function mergeDebugLog(array $args): void
    {
        if ($this->writeDebugLog) {
            foreach ($args as $entry) {
                $this->writeDebugLog($entry);
            }
        }
    }

    /**
     * Clear the calculation engine debug log.
     */
    public function clearLog(): void
    {
        $this->debugLog = [];
    }

    /**
     * Return the calculation engine debug log.
     *
     * @return string[]
     */
    public function getLog()
    {
        return $this->debugLog;
    }
}

• [D] Operands
• [F] ArrayArgumentHelper.php
  Delete
• [F] ArrayArgumentProcessor.php
  Delete
• [F] BranchPruner.php
  Delete
• [F] CyclicReferenceStack.php
  Delete
• [F] FormattedNumber.php
  Delete
• [F] Logger.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"
                        
}