Delphi DLL Requires Chilkat v11.0.0+
Delphi DLL
PayPal - Find Authorizations
See more PayPal Examples
Finds previously created authorizations.Chilkat Delphi DLL Downloads
var
success: Boolean;
jsonToken: HCkJsonObject;
sbAuth: HCkStringBuilder;
rest: HCkRest;
bAutoReconnect: Boolean;
sbJsonResponse: HCkStringBuilder;
json: HCkJsonObject;
sbTemp: HCkStringBuilder;
jsonAuth: HCkJsonObject;
numPayments: Integer;
i: Integer;
j: Integer;
numTransactions: Integer;
numRelatedResources: Integer;
k: Integer;
begin
success := False;
// 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 := CkJsonObject_Create();
CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/paypal.json');
// Build the Authorization request header field value.
sbAuth := CkStringBuilder_Create();
// token_type should be "Bearer"
CkStringBuilder_Append(sbAuth,CkJsonObject__stringOf(jsonToken,'token_type'));
CkStringBuilder_Append(sbAuth,' ');
CkStringBuilder_Append(sbAuth,CkJsonObject__stringOf(jsonToken,'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 := CkRest_Create();
bAutoReconnect := True;
success := CkRest_Connect(rest,'api.sandbox.paypal.com',443,True,bAutoReconnect);
if (success = False) then
begin
Memo1.Lines.Add(CkRest__lastErrorText(rest));
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..
// ----------------------------------------------------------------------------------------------
// Clear the REST object of any headers or query params from previous requests.
CkRest_ClearAllHeaders(rest);
CkRest_ClearAllQueryParams(rest);
CkRest_AddHeader(rest,'Authorization',CkStringBuilder__getAsString(sbAuth));
// To find authoriaztions, we list payments and look for those
// containing "authorization" transactions
CkRest_AddQueryParam(rest,'count','100');
CkRest_AddQueryParam(rest,'start_index','0');
CkRest_AddQueryParam(rest,'sort_by','update_time');
CkRest_AddQueryParam(rest,'sort_order','asc');
// Send the GET request and get the JSON response.
sbJsonResponse := CkStringBuilder_Create();
success := CkRest_FullRequestNoBodySb(rest,'GET','/v1/payments/payment',sbJsonResponse);
if (success = False) then
begin
Memo1.Lines.Add(CkRest__lastErrorText(rest));
Exit;
end;
json := CkJsonObject_Create();
CkJsonObject_putEmitCompact(json,False);
CkJsonObject_LoadSb(json,sbJsonResponse);
// (optional) Save the entire JSON response to a file to examine if desired..
sbTemp := CkStringBuilder_Create();
CkJsonObject_EmitSb(json,sbTemp);
CkStringBuilder_WriteFile(sbTemp,'qa_output/paypal_payments.json','utf-8',False);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(CkRest_getResponseStatusCode(rest)));
// Did we get a 200 success response?
if (CkRest_getResponseStatusCode(rest) <> 200) then
begin
Memo1.Lines.Add(CkJsonObject__emit(json));
Memo1.Lines.Add('Failed.');
Exit;
end;
// We are looking for "authorization" transactions .
// As shown below, we are looking in the "transactions" for "related_resources"
// containing "authorization" JSON objects.
// {
// "payments": [
// {
// "id": "PAY-3SL8976592063093RLA3DMAY",
// "create_time": "2016-11-24T00:36:19Z",
// "update_time": "2016-11-24T00:36:24Z",
// "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": "6HG91590AX913463C",
// "create_time": "2016-11-24T00:36:19Z",
// "update_time": "2016-11-24T00:36:24Z",
// "amount": {
// ...
// }
// },
// "state": "authorized",
// "parent_payment": "PAY-3SL8976592063093RLA3DMAY",
// "valid_until": "2016-12-23T00:36:19Z",
// ...
//
// Iterate over the payments and show each authorization
jsonAuth := CkJsonObject_Create();
numPayments := CkJsonObject_SizeOfArray(json,'payments');
i := 0;
while i < numPayments do
begin
CkJsonObject_putI(json,i);
j := 0;
numTransactions := CkJsonObject_SizeOfArray(json,'payments[i].transactions');
while j < numTransactions do
begin
CkJsonObject_putJ(json,j);
numRelatedResources := CkJsonObject_SizeOfArray(json,'payments[i].transactions[j].related_resources');
k := 0;
while k < numRelatedResources do
begin
CkJsonObject_putK(json,k);
if (CkJsonObject_HasMember(json,'payments[i].transactions[j].related_resources[k].authorization') = True) then
begin
CkJsonObject_ObjectOf2(json,'payments[i].transactions[j].related_resources[k].authorization',jsonAuth);
Memo1.Lines.Add('authorization id: ' + CkJsonObject__stringOf(jsonAuth,'id'));
Memo1.Lines.Add('state: ' + CkJsonObject__stringOf(jsonAuth,'state'));
Memo1.Lines.Add('total: ' + CkJsonObject__stringOf(jsonAuth,'amount.total'));
Memo1.Lines.Add('----');
end;
k := k + 1;
end;
j := j + 1;
end;
i := i + 1;
end;
Memo1.Lines.Add('success');
CkJsonObject_Dispose(jsonToken);
CkStringBuilder_Dispose(sbAuth);
CkRest_Dispose(rest);
CkStringBuilder_Dispose(sbJsonResponse);
CkJsonObject_Dispose(json);
CkStringBuilder_Dispose(sbTemp);
CkJsonObject_Dispose(jsonAuth);