(Node.js) PayPal - Capture a Previously Authorized Payment

Captures a previously authorized payment.

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("amount.currency","USD");
    json.UpdateString("amount.total","4.54");
    json.UpdateBool("is_final_capture",true);
    console.log(json.Emit());

    // The JSON created by the above code:

    // 	{ 
    // 	  "amount": { 
    // 	    "currency": "USD",
    // 	    "total": "4.54"
    // 	  },
    // 	  "is_final_capture": true
    // 	}

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

    // To capture payment, make a call to /v1/payments/authorization/[authorization_id]/capture with the authorization ID in the URI.
    // See PayPal Authorize Payment for sample code to create the authorization.
    // The "7X8332687A4929542" comes from the "transactions[0].related_resources[0].authorization.id" part of the authorization response.

    var sbPath = new chilkat.StringBuilder();
    sbPath.Append("/v1/payments/authorization/[authorization_id]/capture");
    var numReplacements = sbPath.Replace("[authorization_id]","7X8332687A4929542");

    // 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",sbPath.GetAsString(),sbJsonRequest,sbJsonResponse);
    if (success !== true) {
        console.log(rest.LastErrorText);
        return;
    }

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

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

    // IMPORTANT: In most PayPal examples, the return status code is 201.
    // For this particular call, PayPal returns status code 200.

    // Did we get a 200 success response?
    if (rest.ResponseStatusCode !== 200) {
        console.log(json.Emit());
        console.log("Failed.");
        return;
    }

    // Sample JSON response is shown below.
    console.log(json.Emit());

    console.log("success");

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

    // 	{ 
    // 	  "id": "1LY5310469661362J",
    // 	  "create_time": "2016-11-24T00:40:50Z",
    // 	  "update_time": "2016-11-24T00:40:54Z",
    // 	  "amount": { 
    // 	    "total": "4.54",
    // 	    "currency": "USD"
    // 	  },
    // 	  "is_final_capture": true,
    // 	  "state": "completed",
    // 	  "reasonCode": "None",
    // 	  "parent_payment": "PAY-2CY489250W145633HLA3DK3Y",
    // 	  "transaction_fee": { 
    // 	    "value": "0.43",
    // 	    "currency": "USD"
    // 	  },
    // 	  "links": [
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/1LY5310469661362J",
    // 	      "rel": "self",
    // 	      "method": "GET"
    // 	    },
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/1LY5310469661362J/refund",
    // 	      "rel": "refund",
    // 	      "method": "POST"
    // 	    },
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542",
    // 	      "rel": "authorization",
    // 	      "method": "GET"
    // 	    },
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
    // 	      "rel": "parent_payment",
    // 	      "method": "GET"
    // 	    }
    // 	  ]
    // 	

}

chilkatExample();