(C#) PayPal - Execute Approved PayPal Payment

Executes an approved PayPal payment. (This is for executing an approved PayPal payment, not a credit card payment.)

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

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// 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)
Chilkat.JsonObject jsonToken = new Chilkat.JsonObject();
jsonToken.LoadFile("qa_data/tokens/paypal.json");

// Build the Authorization request header field value.
Chilkat.StringBuilder 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.
Chilkat.Rest rest = new Chilkat.Rest();
bool bAutoReconnect = true;
bool success = rest.Connect("api.sandbox.paypal.com",443,true,bAutoReconnect);
if (success != true) {
    Debug.WriteLine(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 payer_id
Chilkat.JsonObject json = new Chilkat.JsonObject();
json.EmitCompact = false;
json.AppendString("payer_id","RRCYJUTFJGZTA");
Debug.WriteLine(json.Emit());

// The JSON created by the above code:

// 	{ 
// 	  "payer_id": "RRCYJUTFJGZTA"
// 	}

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

// The payment ID is passed in the path.
Chilkat.StringBuilder sbPath = new Chilkat.StringBuilder();
sbPath.Append("/v1/payments/payment/payment_id/execute");
int numReplaced = sbPath.Replace("payment_id","PAY-4N746561P0587231SKQQK6MY");

// Send the POST request containign the JSON in the request body, and get the JSON response.
Chilkat.StringBuilder sbJsonRequest = new Chilkat.StringBuilder();
json.EmitCompact = true;
json.EmitSb(sbJsonRequest);
Chilkat.StringBuilder sbJsonResponse = new Chilkat.StringBuilder();
success = rest.FullRequestSb("POST",sbPath.GetAsString(),sbJsonRequest,sbJsonResponse);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

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

Debug.WriteLine("Response Status Code = " + Convert.ToString(rest.ResponseStatusCode));

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

// Sample JSON response is shown below.
Debug.WriteLine(json.Emit());

Debug.WriteLine("success");

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

// 	{ 
// 	  "id": "PAY-4N746561P0587231SKQQK6MY",
// 	  "create_time": "2014-09-22T23:22:27Z",
// 	  "update_time": "2014-09-22T23:31:13Z",
// 	  "state": "approved",
// 	  "intent": "sale",
// 	  "payer": { 
// 	    "payment_method": "paypal",
// 	    "payer_info": { 
// 	      "email": "npurayil-uspr-60@paypal.com",
// 	      "first_name": "Brian",
// 	      "last_name": "Robinson",
// 	      "payer_id": "JMKDKJ4D7DG7G",
// 	      "shipping_address": { 
// 	        "line1": "4thFloor",
// 	        "line2": "unit#34",
// 	        "city": "SAn Jose",
// 	        "state": "CA",
// 	        "postal_code": "95131",
// 	        "country_code": "US",
// 	        "phone": "011862212345678",
// 	        "recipient_name": "HelloWorld"
// 	      }
// 	    }
// 	  },
// 	  "transactions": [
// 	    { 
// 	      "amount": { 
// 	        "total": "30.11",
// 	        "currency": "USD",
// 	        "details": { 
// 	          "subtotal": "30.00",
// 	          "tax": "0.07",
// 	          "shipping": "0.03",
// 	          "handling_fee": "1.00",
// 	          "insurance": "0.01",
// 	          "shipping_discount": "-1.00"
// 	        }
// 	      },
// 	      "description": "This is the payment transaction description.",
// 	      "item_list": { 
// 	        "items": [
// 	          { 
// 	            "name": "hat",
// 	            "sku": "1",
// 	            "price": "3.00",
// 	            "currency": "USD",
// 	            "quantity": "5",
// 	            "description": "Brown color hat",
// 	            "tax": "0.01"
// 	          },
// 	          { 
// 	            "name": "handbag",
// 	            "sku": "product34",
// 	            "price": "15.00",
// 	            "currency": "USD",
// 	            "quantity": "1",
// 	            "description": "Black color handbag",
// 	            "tax": "0.02"
// 	          }
// 	        ],
// 	        "shipping_address": { 
// 	          "recipient_name": "HelloWorld",
// 	          "line1": "4thFloor",
// 	          "line2": "unit#34",
// 	          "city": "SAn Jose",
// 	          "state": "CA",
// 	          "phone": "011862212345678",
// 	          "postal_code": "95131",
// 	          "country_code": "US"
// 	        }
// 	      },
// 	      "related_resources": [
// 	        { 
// 	          "sale": { 
// 	            "id": "4XP56210M0797192Y",
// 	            "create_time": "2014-09-22T23:22:27Z",
// 	            "update_time": "2014-09-22T23:31:13Z",
// 	            "amount": { 
// 	              "total": "30.11",
// 	              "currency": "USD"
// 	            },
// 	            "payment_mode": "INSTANT_TRANSFER",
// 	            "state": "completed",
// 	            "protection_eligibility": "ELIGIBLE",
// 	            "protection_eligibility_type": "ITEM_NOT_RECEIVED_ELIGIBLE",
// 	            "transaction_fee": { 
// 	              "value": "1.75",
// 	              "currency": "USD"
// 	            },
// 	            "parent_payment": "PAY-4N746561P0587231SKQQK6MY",
// 	            "links": [
// 	              { 
// 	                "href": "https://api.paypal.com/v1/payments/sale/4XP56210M0797192Y",
// 	                "rel": "self",
// 	                "method": "GET"
// 	              },
// 	              { 
// 	                "href": "https://api.paypal.com/v1/payments/sale/4XP56210M0797192Y/refund",
// 	                "rel": "refund",
// 	                "method": "POST"
// 	              },
// 	              { 
// 	                "href": "https://api.paypal.com/v1/payments/payment/PAY-4N746561P0587231SKQQK6MY",
// 	                "rel": "parent_payment",
// 	                "method": "GET"
// 	              }
// 	            ]
// 	          }
// 	        }
// 	      ]
// 	    }
// 	  ],
// 	  "links": [
// 	    { 
// 	      "href": "https://api.paypal.com/v1/payments/payment/PAY-4N746561P0587231SKQQK6MY",
// 	      "rel": "self",
// 	      "method": "GET"
// 	    }
// 	  ]
// 	}