BlueSnap Payment Gateway implementation as a custom module in Drupal is explained in the post. BlueSnap is a global payment gateway that supports credit and debit card payments, ACH/ECP, SEPA Direct Debit, digital wallets, and Paypal. Its Payment API is RESTful and uses standard HTTP features. Bluesnap API supports automatic recurring subscriptions and we utilize this feature for BlueSnap implementation as a Custom Drupal 7 Module. We use CURL to get the response in JSON format.

1.1 Create a Subscription Plan

Sample:

curl -v -X POST https://sandbox.bluesnap.com/services/2/recurring/plans\

-H'Content-Type: application/json'\

-H'Accept: application/json'\ 

-H'Authorization:Basic dXNlcm5hbWU6cGFzc3dvcmQ='\

-d'
{
  "chargeFrequency":"MONTHLY",

  "name":"Gold Plan",

  "currency":"USD",

  "recurringChargeAmount":29.99
}'

1.2 Update/Retrieve Specific Plan

Sample:

curl -v -X GET https://sandbox.bluesnap.com/services/2/recurring/plans/2283845\

-H'Content-Type: application/json'\

-H'Accept: application/json'\ 

-H'Authorization:Basic dXNlcm5hbWU6cGFzc3dvcmQ='\
-d '

1.3 Create Subscription

Sample:

curl -v -X POST https://sandbox.bluesnap.com/services/2/recurring/subscriptions\

-H'Content-Type: application/json'\

-H'Accept: application/json'\

-H'Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ='\
-d '
{
 "payerInfo":{
    "zip":12345,
       "firstName":"John",
       "lastName":"Doe",
       "phone": 1234567890
    },
    "paymentSource":{"creditCardInfo":{"creditCard":{
       "expirationYear":2019,
       "securityCode":111,
       "expirationMonth":"07",
       "cardNumber":4111111111111111
 }}},
       "planId":2283845,
       "transactionFraudInfo":{"fraudSessionId":1234}
}'

1.4 Update/Retrieve Subscription

Sample:

curl -v -X GET https://sandbox.bluesnap.com/services/2/recurring/subscriptions/8491535\
-H'Content-Type: application/json'\
-H'Accept: application/json'\ 
-H'Authorization:Basic dXNlcm5hbWU6cGFzc3dvcmQ='\
-d '

2. Convert currency from Base currency to USD in Paypal payment in Magento 2.2.3

Magento uses the default Magento-Paypal module for the Paypal payment gateway. So the payment currency codes and the functionality calls from the core module. In order to alter that we have to override the existing functionality and extend it as a new module.