(Node.js) PayPal - Capture Authorization

Capture and process a previously created authorization. The original payment call must have the intent set to authorize.

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 v9.5.0.64 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..
    // ----------------------------------------------------------------------------------------------

    // To capture a particular amount, build JSON such as this:
    var json = new chilkat.JsonObject();
    json.EmitCompact = false;
    json.UpdateString("amount.currency","USD");
    json.UpdateString("amount.total","6.70");
    // is_final_capture is optional and indicates whether to release all remaining funds that the authorization holds in the funding instrument.
    json.UpdateBool("is_final_capture",true);
    console.log(json.Emit());

    // The JSON created by the above code:

    // 	{ 
    // 	  "amount": { 
    // 	    "currency": "USD",
    // 	    "total": "6.70"
    // 	  },
    // 	  "is_final_capture": true
    // 	}

    // This is the OAuth2 Authorization header, not to be confused with a PayPal credit card authorization...
    rest.AddHeader("Authorization",sbAuth.GetAsString());
    rest.AddHeader("Content-Type","application/json");

    // The authorization ID is added to the path.
    // The authorization ID is obtained from payment records as shown here: Find Authorizations
    var sbPath = new chilkat.StringBuilder();
    sbPath.Append("/v1/payments/authorization/authorization_id/capture");
    var numReplaced = sbPath.Replace("authorization_id","6HG91590AX913463C");

    // Send the POST request containing 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);

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

    console.log(json.Emit());
    console.log("Success.");

    // A successful JSON response:

    // 	{ 
    // 	  "id": "87S70321AE222860G",
    // 	  "create_time": "2016-11-26T17:27:46Z",
    // 	  "update_time": "2016-11-26T17:27:50Z",
    // 	  "amount": { 
    // 	    "total": "6.70",
    // 	    "currency": "USD"
    // 	  },
    // 	  "is_final_capture": true,
    // 	  "state": "completed",
    // 	  "reasonCode": "None",
    // 	  "parent_payment": "PAY-3SL8976592063093RLA3DMAY",
    // 	  "transaction_fee": { 
    // 	    "value": "0.49",
    // 	    "currency": "USD"
    // 	  },
    // 	  "links": [
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/87S70321AE222860G",
    // 	      "rel": "self",
    // 	      "method": "GET"
    // 	    },
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/87S70321AE222860G/refund",
    // 	      "rel": "refund",
    // 	      "method": "POST"
    // 	    },
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/authorization/6HG91590AX913463C",
    // 	      "rel": "authorization",
    // 	      "method": "GET"
    // 	    },
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-3SL8976592063093RLA3DMAY",
    // 	      "rel": "parent_payment",
    // 	      "method": "GET"
    // 	    }
    // 	  ]
    // 	}
    // 

}

chilkatExample();