Pascal (Lazarus/Delphi)
Pascal (Lazarus/Delphi)
PayPal - Execute Approved PayPal Payment
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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.
Chilkat Pascal (Lazarus/Delphi) Downloads
program ChilkatDemo;
// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}
uses
{$IFDEF UNIX}
cthreads,
{$ENDIF}
SysUtils,
CkDllLoader,
Chilkat.StringBuilder,
Chilkat.Rest,
Chilkat.JsonObject;
// ---------------------------------------------------------------------------
procedure RunDemo;
var
success: Boolean;
jsonToken: TJsonObject;
sbAuth: TStringBuilder;
rest: TRest;
bAutoReconnect: Boolean;
json: TJsonObject;
sbPath: TStringBuilder;
numReplaced: Integer;
sbJsonRequest: TStringBuilder;
sbJsonResponse: TStringBuilder;
begin
success := False;
// 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)
jsonToken := TJsonObject.Create;
jsonToken.LoadFile('qa_data/tokens/paypal.json');
// Build the Authorization request header field value.
sbAuth := TStringBuilder.Create;
// 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.
rest := TRest.Create;
bAutoReconnect := True;
success := rest.Connect('api.sandbox.paypal.com',443,True,bAutoReconnect);
if (success <> True) then
begin
WriteLn(rest.LastErrorText);
Exit;
end;
// ----------------------------------------------------------------------------------------------
// 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
json := TJsonObject.Create;
json.EmitCompact := False;
json.AppendString('payer_id','RRCYJUTFJGZTA');
WriteLn(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.
sbPath := TStringBuilder.Create;
sbPath.Append('/v1/payments/payment/payment_id/execute');
numReplaced := sbPath.Replace('payment_id','PAY-4N746561P0587231SKQQK6MY');
// Send the POST request containign the JSON in the request body, and get the JSON response.
sbJsonRequest := TStringBuilder.Create;
json.EmitCompact := True;
json.EmitSb(sbJsonRequest);
sbJsonResponse := TStringBuilder.Create;
success := rest.FullRequestSb('POST',sbPath.GetAsString(),sbJsonRequest,sbJsonResponse);
if (success <> True) then
begin
WriteLn(rest.LastErrorText);
Exit;
end;
json.EmitCompact := False;
json.LoadSb(sbJsonResponse);
WriteLn('Response Status Code = ' + rest.ResponseStatusCode);
// Did we get a 200 success response?
if (rest.ResponseStatusCode <> 200) then
begin
WriteLn(json.Emit());
WriteLn('Failed.');
Exit;
end;
// Sample JSON response is shown below.
WriteLn(json.Emit());
WriteLn('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"
// }
// ]
// }
jsonToken.Free;
sbAuth.Free;
rest.Free;
json.Free;
sbPath.Free;
sbJsonRequest.Free;
sbJsonResponse.Free;
end;
// ---------------------------------------------------------------------------
begin
try
RunDemo;
except
on E: Exception do
WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
end;
WriteLn;
{$IFDEF MSWINDOWS}
WriteLn('Press Enter to exit...');
ReadLn;
{$ENDIF}
end.