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✏️ Editing: PaypalPaymentController.php

<?php

namespace App\Http\Controllers;

use App\Models\PaymentRequest;
use App\Traits\Processor;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Redirect;
use Illuminate\Support\Facades\Validator;
use Illuminate\Support\Str;

class PaypalPaymentController extends Controller
{
    use Processor;

private $config_values;
    private $base_url;

private PaymentRequest $payment;

public function __construct(PaymentRequest $payment)
    {
        $config = $this->payment_config('paypal', 'payment_config');
        if (!is_null($config) && $config->mode == 'live') {
            $this->config_values = json_decode($config->live_values);
        } elseif (!is_null($config) && $config->mode == 'test') {
            $this->config_values = json_decode($config->test_values);
        }

if($config){
            $this->base_url = ($config->mode == 'test') ? 'https://api-m.sandbox.paypal.com' : 'https://api-m.paypal.com';
        }
        $this->payment = $payment;
    }

public function token(){
        $ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $this->base_url.'/v1/oauth2/token');
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, "grant_type=client_credentials");
        curl_setopt($ch, CURLOPT_USERPWD, $this->config_values->client_id . ':' . $this->config_values->client_secret);

$headers = array();
        $headers[] = 'Content-Type: application/x-www-form-urlencoded';
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$accessToken = curl_exec($ch);
        if (curl_errno($ch)) {
            echo 'Error:' . curl_error($ch);
        }
        curl_close($ch);
        return $accessToken;
    }

/**
     * Responds with a welcome message with instructions
     *
     */
    public function payment(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'payment_id' => 'required|uuid'
        ]);

if ($validator->fails()) {
            return response()->json($this->response_formatter(GATEWAYS_DEFAULT_400, null, $this->error_processor($validator)), 400);
        }

$data = $this->payment::where(['id' => $request['payment_id']])->where(['is_paid' => 0])->first();
        if (!isset($data)) {
            return response()->json($this->response_formatter(GATEWAYS_DEFAULT_204), 200);
        }

if ($data['additional_data'] != null) {
            $business = json_decode($data['additional_data']);
            $business_name = $business->business_name ?? "my_business";
        } else {
            $business_name = "my_business";
        }

$accessToken = json_decode($this->token(),true);

if ( isset($accessToken['access_token'])) {
            $accessToken = $accessToken['access_token'];
            $payment_data = [];
            $payment_data['purchase_units'] = [
                [
                    'reference_id' => $data->id,
                    'name' => $business_name,
                    'desc'  => 'payment ID :' . $data->id,
                    'amount' => [
                        'currency_code' => 'USD',
                        'value' => round($data->payment_amount, 2)
                    ]
                ]
            ];

$payment_data['invoice_id'] = $data->id;
            $payment_data['invoice_description'] = "Order #{$payment_data['invoice_id']} Invoice";
            $payment_data['total'] = round($data->payment_amount, 2);
            $payment_data['intent'] = 'CAPTURE';
            $payment_data['application_context'] = [
                'return_url' => route('paypal.success',['payment_id' => $data->id]),
                'cancel_url' => route('paypal.cancel',['payment_id' => $data->id])
            ];
            $ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $this->base_url.'/v2/checkout/orders');
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS,  json_encode($payment_data));

$headers = array();
            $headers[] = 'Content-Type: application/json';
            $headers[] = "Authorization: Bearer $accessToken";
            $headers[] = "Paypal-Request-Id:".Str::uuid();
            curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);
            if (curl_errno($ch)) {
                echo 'Error:' . curl_error($ch);
            }
            curl_close($ch);
        }else{
            return response()->json($this->response_formatter(GATEWAYS_DEFAULT_204), 200);
        }
        ;
        $response = json_decode($response);

$links = $response->links;
        return Redirect::away($links[1]->href);

return 0;

}

/**
     * Responds with a welcome message with instructions
     */
    public function cancel(Request $request)
    {
        $data = $this->payment::where(['id' => $request['payment_id']])->first();
        return $this->payment_response($data,'cancel');
    }

/**
     * Responds with a welcome message with instructions
     */
    public function success(Request $request)
    {

$accessToken = json_decode($this->token(),true);
        $accessToken = $accessToken['access_token'];

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $this->base_url."/v2/checkout/orders/{$request->token}/capture");
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);

$headers = array();
        $headers[] = 'Content-Type: application/json';
        $headers[] = "Authorization: Bearer  $accessToken";
        $headers[] = 'Paypal-Request-Id:'.Str::uuid();
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);
        if (curl_errno($ch)) {
            echo 'Error:' . curl_error($ch);
        }
        curl_close($ch);

$response = json_decode($result);

if($response->status === 'COMPLETED'){
            $this->payment::where(['id' => $request['payment_id']])->update([
                'payment_method' => 'paypal',
                'is_paid' => 1,
                'transaction_id' => $response->id,
            ]);

$data = $this->payment::where(['id' => $request['payment_id']])->first();

if (isset($data) && function_exists($data->success_hook)) {
                call_user_func($data->success_hook, $data);
            }

return $this->payment_response($data,'success');
        }
        $payment_data = $this->payment::where(['id' => $request['payment_id']])->first();
        if (isset($payment_data) && function_exists($payment_data->failure_hook)) {
            call_user_func($payment_data->failure_hook, $payment_data);
        }
        return $this->payment_response($payment_data,'fail');
    }

}

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