<?php

namespace Maatwebsite\Excel\Validators;

use Illuminate\Contracts\Validation\Factory;
use Illuminate\Support\Str;
use Illuminate\Validation\ValidationException as IlluminateValidationException;
use Maatwebsite\Excel\Concerns\SkipsOnFailure;
use Maatwebsite\Excel\Concerns\WithValidation;
use Maatwebsite\Excel\Exceptions\RowSkippedException;

class RowValidator
{
    /**
     * @var Factory
     */
    private $validator;

    /**
     * @param  Factory  $validator
     */
    public function __construct(Factory $validator)
    {
        $this->validator = $validator;
    }

    /**
     * @param  array  $rows
     * @param  WithValidation  $import
     *
     * @throws ValidationException
     * @throws RowSkippedException
     */
    public function validate(array $rows, WithValidation $import)
    {
        $rules      = $this->rules($import);
        $messages   = $this->messages($import);
        $attributes = $this->attributes($import);

        try {
            $validator = $this->validator->make($rows, $rules, $messages, $attributes);

            if (method_exists($import, 'withValidator')) {
                $import->withValidator($validator);
            }

            $validator->validate();
        } catch (IlluminateValidationException $e) {
            $failures = [];
            foreach ($e->errors() as $attribute => $messages) {
                $row           = strtok($attribute, '.');
                $attributeName = strtok('');
                $attributeName = $attributes['*.' . $attributeName] ?? $attributeName;

                $failures[] = new Failure(
                    $row,
                    $attributeName,
                    str_replace($attribute, $attributeName, $messages),
                    $rows[$row] ?? []
                );
            }

            if ($import instanceof SkipsOnFailure) {
                $import->onFailure(...$failures);
                throw new RowSkippedException(...$failures);
            }

            throw new ValidationException(
                $e,
                $failures
            );
        }
    }

    /**
     * @param  WithValidation  $import
     * @return array
     */
    private function messages(WithValidation $import): array
    {
        return method_exists($import, 'customValidationMessages')
            ? $this->formatKey($import->customValidationMessages())
            : [];
    }

    /**
     * @param  WithValidation  $import
     * @return array
     */
    private function attributes(WithValidation $import): array
    {
        return method_exists($import, 'customValidationAttributes')
            ? $this->formatKey($import->customValidationAttributes())
            : [];
    }

    /**
     * @param  WithValidation  $import
     * @return array
     */
    private function rules(WithValidation $import): array
    {
        return $this->formatKey($import->rules());
    }

    /**
     * @param  array  $elements
     * @return array
     */
    private function formatKey(array $elements): array
    {
        return collect($elements)->mapWithKeys(function ($rule, $attribute) {
            $attribute = Str::startsWith($attribute, '*.') ? $attribute : '*.' . $attribute;

            return [$attribute => $this->formatRule($rule)];
        })->all();
    }

    /**
     * @param  string|object|callable|array  $rules
     * @return string|array
     */
    private function formatRule($rules)
    {
        if (is_array($rules)) {
            foreach ($rules as $rule) {
                $formatted[] = $this->formatRule($rule);
            }

            return $formatted ?? [];
        }

        if (is_object($rules) || is_callable($rules)) {
            return $rules;
        }

        if (Str::contains($rules, 'required_') && preg_match('/(.*?):(.*),(.*)/', $rules, $matches)) {
            $column = Str::startsWith($matches[2], '*.') ? $matches[2] : '*.' . $matches[2];

            return $matches[1] . ':' . $column . ',' . $matches[3];
        }

        return $rules;
    }
}

• [F] Failure.php
  Delete
• [F] RowValidator.php
  Delete
• [F] ValidationException.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"
                        
}