<?php

namespace Matrix\Operators;

use Matrix\Matrix;
use Matrix\Exception;

class DirectSum extends Operator
{
    /**
     * Execute the addition
     *
     * @param mixed $value The matrix or numeric value to add to the current base value
     * @return $this The operation object, allowing multiple additions to be chained
     * @throws Exception If the provided argument is not appropriate for the operation
     */
    public function execute($value): Operator
    {
        if (is_array($value)) {
            $value = new Matrix($value);
        }

        if ($value instanceof Matrix) {
            return $this->directSumMatrix($value);
        }

        throw new Exception('Invalid argument for addition');
    }

    /**
     * Execute the direct sum for a matrix
     *
     * @param Matrix $value The numeric value to concatenate/direct sum with the current base value
     * @return $this The operation object, allowing multiple additions to be chained
     **/
    private function directSumMatrix($value): Operator
    {
        $originalColumnCount = count($this->matrix[0]);
        $originalRowCount = count($this->matrix);
        $valColumnCount = $value->columns;
        $valRowCount = $value->rows;
        $value = $value->toArray();

        for ($row = 0; $row < $this->rows; ++$row) {
            $this->matrix[$row] = array_merge($this->matrix[$row], array_fill(0, $valColumnCount, 0));
        }

        $this->matrix = array_merge(
            $this->matrix,
            array_fill(0, $valRowCount, array_fill(0, $originalColumnCount, 0))
        );

        for ($row = $originalRowCount; $row < $originalRowCount + $valRowCount; ++$row) {
            array_splice(
                $this->matrix[$row],
                $originalColumnCount,
                $valColumnCount,
                $value[$row - $originalRowCount]
            );
        }

        return $this;
    }
}

• [F] Addition.php
  Delete
• [F] DirectSum.php
  Delete
• [F] Division.php
  Delete
• [F] Multiplication.php
  Delete
• [F] Operator.php
  Delete
• [F] Subtraction.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"
                        
}