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Dir : ~/var/www/ecommerce_pg/app/Http/Controllers/
View File Name : PayInstantController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;
use Illuminate\Support\Facades\Log;
use Carbon\Carbon;

class PayInstantController extends Controller
{

    public function index(Request $request)
    {

      \Log::info($request->all());
      $data = [];

      $params = $request->all();

      $params['city'] = 'Bangalore';
      $params['zip_code'] = '560001';
      $params['country'] = 'India';
      // dd($params);
      $validator = self::validator($params);
      if ($validator->fails()) {
        return Response()->json([
          'status'=>201,
          'message'=>$validator->errors()->first()
        ]);
      }

      $order_id = $request['orderId'];
      $amount = $request['amount'];
      $description = 'Order #'.$request['orderId'];
      $cust_name = $request['name'];
      $cust_email = $request['email'];
      $cust_phone = $request['phone'];
      $cust_city = 'NA';
      $cust_zip = 'NA';
      $cust_country = 'India';

      // Do not change anything below this
      $data = $params = [];
      $salt = config('app.pay_instant_salt');
      $params['api_key'] = config('app.pay_instant_app_key');
      $params['return_url'] = \URL::to('/pi/checkout/cb/callback');
      $params['order_id'] = $order_id;
      $params['amount'] = $amount;
      $params['currency'] = 'INR';
      $params['description'] = $description;
      $params['name'] = $cust_name;
      $params['email'] = $cust_email;
      $params['phone'] = $cust_phone;
      $params['city'] = $cust_city;
      $params['zip_code'] = $cust_zip;
      $params['country'] = $cust_country;
      // Hash Generation
      $hash = self::hashCalculate($salt, $params);
      $params['hash'] = $hash;
      $data['fields'] = $params;
      $data['action_url'] = 'https://api.payinstance.com/v2/paymentrequest';

      return view('payments.PayInstant.checkout',$data);
    }

    static public function validator(array $data)
    {
      return Validator::make($data, [
      'name' => ['required', 'string', 'max:255'],
      'email' => ['required', 'email', 'max:255'],
      'phone' => ['required', 'string', 'min:10', 'max:10'],
      'orderId' => ['required', 'string', 'max:255'],
      'amount' => ['required', 'string', 'max:255'],
      ]);
    }

    static public function hashCalculate($salt,$input)
    {
      $hash_columns = ['address_line_1', 'address_line_2', 'amount', 'api_key', 'city', 'country', 'currency', 'description', 'email', 'mode', 'name', 'order_id', 'phone', 'return_url', 'state', 'udf1', 'udf2', 'udf3', 'udf4', 'udf5', 'zip_code',];
      sort($hash_columns);
      $hash_data = $salt;
      foreach ($hash_columns as $column) {
        if (isset($input[$column])) {
          if (strlen($input[$column]) > 0) {
            $hash_data .= '|' . trim($input[$column]);
          }
        }
      }
      $hash = strtoupper(hash("sha512", $hash_data));
      return $hash;
    }

  public function callback(Request $request)
  {

    try {
      $client = new \GuzzleHttp\Client();
      // $response = $client->request('POST', \DB::table('redirection_links')->first()->link, [
      // $response = $client->request('POST', 'https://stylemirror.in/pi/checkout/PayInstant/callback', [
      // $response = $client->request('POST', 'http://localhost:8002/pi/checkout/PayInstant/callback', [
      $client__ = 'https://stylezones.in';

      $response = $client->request('POST', $client__.'/pi/checkout/PayInstant/callback', [
        'headers'=>$headers,
        'form_params' => ['data'=>$request->all()]
      ]);

      $response=json_decode($response->getBody()->getContents(),true);
    } catch (\Exception $e) {
    }

    $client__ = 'https://stylezones.in';

    $redirection_url = $client__.'/appcheckout/check/?orderId='.$request->order_id;

   // if ($response['status'] == 'success') {
     // return redirect('/pi/payment/success?r='.$redirection_url);
   // }
   // else {
     // return redirect('/pi/payment/fail?r='.$redirection_url);
   // }

	 if ($request['response_message'] == 'Transaction successful')
	 {
      		return redirect('/pi/payment/success?r='.$redirection_url);
	 }
    	else
	{
      		return redirect('/pi/payment/fail?r='.$redirection_url);
    	}



  }

    public static function fetchTransactionStatus($order_id)
    {

      $salt = config('app.pay_instant_salt');
      $params = [];
      $params['api_key'] = config('app.pay_instant_app_key');
      $params['order_id'] = $order_id;

      $hash = self::hashCalculate($salt, $params);
      $params['hash'] = $hash;

      try {
        $endpoint = 'https://api.payinstance.com/v2/paymentstatus';
        $client = new \GuzzleHttp\Client();
        $response = $client->request('POST', $endpoint, [
          'form_params'=>$params,
        ]);
        $response=json_decode($response->getBody()->getContents(),true);
      } catch (\GuzzleHttp\Exception $e) {
        $response = $e->getResponse()->getBody()->getContents();
      } catch (\Exception $e) {
        $response = $e->getMessage();
      }

      $statusCode = 303;
      $data = [];
      if (isset($response['data'])) {
        $statusCode = 200;
        $data = $response['data'];
      }

      return [
        'status'=>200,
        'message'=>'Data fetched successfully',
        'data' => $data,
        'actual_response' => $response
      ];
    }

}