(Node.js) PayPal - Authorize a Payment

Creates an authorization for a payment. This is for the case where the payment will first be authorized, and then captured at a later date. (In other words, the buyer is providing his/her credit card information now, and the actual charge (capture) will take place at a later time.)

Creating the authorization is the same as creating "sale" payment, except the intent is set to "authorize" instead of "sale".

This example requests an authorization for a credit card payment (using a credit card ID previoulsy stored in the PayPal vault).

Note: This example requires Chilkat v9.5.0.65 or greater.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    // Note: Requires Chilkat v9.5.0.65 or greater.

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Load our previously obtained access token. (see PayPal OAuth2 Access Token)
    var jsonToken = new chilkat.JsonObject();
    jsonToken.LoadFile("qa_data/tokens/paypal.json");

    // Build the Authorization request header field value.
    var sbAuth = new chilkat.StringBuilder();
    // token_type should be "Bearer"
    sbAuth.Append(jsonToken.StringOf("token_type"));
    sbAuth.Append(" ");
    sbAuth.Append(jsonToken.StringOf("access_token"));

    // Make the initial connection.
    // A single REST object, once connected, can be used for many PayPal REST API calls.
    // The auto-reconnect indicates that if the already-established HTTPS connection is closed,
    // then it will be automatically re-established as needed.
    var rest = new chilkat.Rest();
    var bAutoReconnect = true;
    var success = rest.Connect("api.sandbox.paypal.com",443,true,bAutoReconnect);
    if (success !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    // ----------------------------------------------------------------------------------------------
    // The code above this comment could be placed inside a function/subroutine within the application
    // because the connection does not need to be made for every request.  Once the connection is made
    // the app may send many requests..
    // ----------------------------------------------------------------------------------------------

    // Build the JSON containing the transaction information.
    var json = new chilkat.JsonObject();
    json.EmitCompact = false;
    json.UpdateString("intent","authorize");
    json.UpdateString("payer.payment_method","credit_card");
    json.UpdateString("payer.funding_instruments[0].credit_card_token.credit_card_id","CARD-52W84623JH8043102LA3CLGA");
    json.UpdateString("payer.funding_instruments[0].credit_card_token.payer_id","user12345");
    json.UpdateString("transactions[0].amount.total","6.70");
    json.UpdateString("transactions[0].amount.currency","USD");
    json.UpdateString("transactions[0].description","This is the payment transaction description.");

    console.log(json.Emit());

    // The JSON created by the above code is this:

    // 	{ 
    // 	  "intent": "authorize",
    // 	  "payer": { 
    // 	    "payment_method": "credit_card",
    // 	    "funding_instruments": [
    // 	      { 
    // 	        "credit_card_token": { 
    // 	          "credit_card_id": "CARD-52W84623JH8043102LA3CLGA",
    // 	          "payer_id": "user12345"
    // 	        }
    // 	      }
    // 	    ]
    // 	  },
    // 	  "transactions": [
    // 	    { 
    // 	      "amount": { 
    // 	        "total": "6.70",
    // 	        "currency": "USD"
    // 	      },
    // 	      "description": "This is the payment transaction description."
    // 	    }
    // 	  ]
    // 	}

    rest.AddHeader("Authorization",sbAuth.GetAsString());
    rest.AddHeader("Content-Type","application/json");

    // Send the POST request containign the JSON in the request body, and get the JSON response.
    var sbJsonRequest = new chilkat.StringBuilder();
    json.EmitCompact = true;
    json.EmitSb(sbJsonRequest);
    var sbJsonResponse = new chilkat.StringBuilder();
    success = rest.FullRequestSb("POST","/v1/payments/payment",sbJsonRequest,sbJsonResponse);
    if (success !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    json.EmitCompact = false;
    json.LoadSb(sbJsonResponse);

    console.log("Response Status Code = " + rest.ResponseStatusCode);

    // Did we get a 201 success response?
    if (rest.ResponseStatusCode !== 201) {
        console.log(json.Emit());
        console.log("Failed.");
        return;
    }

    // Sample JSON response is shown below.
    console.log(json.Emit());
    // The authorization ID found in the related_resources is used to capture the payment at a later time.
    console.log("authorization id: " + json.StringOf("transactions[0].related_resources[0].authorization.id"));
    console.log("success");

    // ------------------------------------------------
    // A sample JSON response:

    // 	{ 
    // 	  "id": "PAY-2CY489250W145633HLA3DK3Y",
    // 	  "create_time": "2016-11-24T00:33:51Z",
    // 	  "update_time": "2016-11-24T00:33:58Z",
    // 	  "state": "approved",
    // 	  "intent": "authorize",
    // 	  "payer": { 
    // 	    "payment_method": "credit_card",
    // 	    "funding_instruments": [
    // 	      { 
    // 	        "credit_card_token": { 
    // 	          "credit_card_id": "CARD-52W84623JH8043102LA3CLGA",
    // 	          "payer_id": "user12345",
    // 	          "last4": "9974",
    // 	          "type": "visa",
    // 	          "expire_month": "9",
    // 	          "expire_year": "2021"
    // 	        }
    // 	      }
    // 	    ]
    // 	  },
    // 	  "transactions": [
    // 	    { 
    // 	      "amount": { 
    // 	        "total": "6.70",
    // 	        "currency": "USD",
    // 	        "details": { 
    // 	          "subtotal": "6.70"
    // 	        }
    // 	      },
    // 	      "description": "This is the payment transaction description.",
    // 	      "related_resources": [
    // 	        { 
    // 	          "authorization": { 
    // 	            "id": "7X8332687A4929542",
    // 	            "create_time": "2016-11-24T00:33:51Z",
    // 	            "update_time": "2016-11-24T00:33:58Z",
    // 	            "amount": { 
    // 	              "total": "6.70",
    // 	              "currency": "USD",
    // 	              "details": { 
    // 	                "subtotal": "6.70"
    // 	              }
    // 	            },
    // 	            "state": "authorized",
    // 	            "parent_payment": "PAY-2CY489250W145633HLA3DK3Y",
    // 	            "valid_until": "2016-12-23T00:33:51Z",
    // 	            "links": [
    // 	              { 
    // 	                "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542",
    // 	                "rel": "self",
    // 	                "method": "GET"
    // 	              },
    // 	              { 
    // 	                "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542/capture",
    // 	                "rel": "capture",
    // 	                "method": "POST"
    // 	              },
    // 	              { 
    // 	                "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542/void",
    // 	                "rel": "void",
    // 	                "method": "POST"
    // 	              },
    // 	              { 
    // 	                "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
    // 	                "rel": "parent_payment",
    // 	                "method": "GET"
    // 	              }
    // 	            ],
    // 	            "processor_response": { 
    // 	              "avs_code": "X",
    // 	              "cvv_code": "M"
    // 	            },
    // 	            "fmf_details": {}
    // 	          }
    // 	        }
    // 	      ]
    // 	    }
    // 	  ],
    // 	  "links": [
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
    // 	      "rel": "self",
    // 	      "method": "GET"
    // 	    }
    // 	  ]
    // 	}

}

chilkatExample();