Pascal (Lazarus/Delphi)
Pascal (Lazarus/Delphi)
PayPal List Merchant Invoices
See more PayPal Examples
List PayPal invoices.See also PayPal List Invoices REST API Reference
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;
sbJsonResponse: TStringBuilder;
json: TJsonObject;
numInvoices: Integer;
i: Integer;
j: Integer;
numBillingInfo: Integer;
numLinks: Integer;
begin
success := False;
// 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)
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..
// ----------------------------------------------------------------------------------------------
rest.AddHeader('Authorization',sbAuth.GetAsString());
rest.AddQueryParam('page','0');
rest.AddQueryParam('page_size','20');
rest.AddQueryParam('total_count_required','true');
// Send the GET request and get the JSON response.
sbJsonResponse := TStringBuilder.Create;
success := rest.FullRequestNoBodySb('GET','/v1/invoicing/invoices',sbJsonResponse);
if (success <> True) then
begin
WriteLn(rest.LastErrorText);
Exit;
end;
json := TJsonObject.Create;
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 response JSON is shown below.
// Iterate over each invoice and get some information from each..
numInvoices := json.SizeOfArray('invoices');
i := 0;
while i < numInvoices do
begin
json.I := i;
WriteLn('Invoice ID: ' + json.StringOf('invoices[i].id'));
WriteLn('Invoice Number: ' + json.StringOf('invoices[i].number'));
WriteLn('Invoice Status: ' + json.StringOf('invoices[i].status'));
WriteLn('Shipping First Name: ' + json.StringOf('invoices[i].shipping_info.first_name'));
j := 0;
numBillingInfo := json.SizeOfArray('invoices[i].billing_info');
while j < numBillingInfo do
begin
json.J := j;
WriteLn('billing_info email: ' + json.StringOf('invoices[i].billing_info[j].email'));
j := j + 1;
end;
numLinks := json.SizeOfArray('invoices[i].links');
j := 0;
while j < numLinks do
begin
json.J := j;
WriteLn('link: ' + json.StringOf('invoices[i].links[j].href'));
j := j + 1;
end;
WriteLn('----');
i := i + 1;
end;
WriteLn('Success.');
// {
// "total_count": 2,
// "invoices": [
// {
// "id": "INV2-XV4B-736P-PLVN-SZCE",
// "number": "0002",
// "status": "DRAFT",
// "merchant_info": {
// "email": "smith-facilitator@chilkatsoft.com"
// },
// "billing_info": [
// {
// "email": "smith-buyer@chilkatsoft.com"
// }
// ],
// "shipping_info": {
// "email": "smith-buyer@chilkatsoft.com",
// "first_name": "Sally",
// "last_name": "Patient",
// "business_name": "Not applicable"
// },
// "invoice_date": "2016-11-15 PST",
// "payment_term": {
// "due_date": "2016-12-30 PST"
// },
// "note": "Medical Invoice 16 Jul, 2013 PST",
// "total_amount": {
// "currency": "USD",
// "value": "500.00"
// },
// "metadata": {
// "created_date": "2016-11-15 08:09:21 PST"
// },
// "paid_amount": {
// "paypal": {
// "currency": "USD",
// "value": "0.00"
// },
// "other": {
// "currency": "USD",
// "value": "0.00"
// }
// },
// "refunded_amount": {
// "paypal": {
// "currency": "USD",
// "value": "0.00"
// },
// "other": {
// "currency": "USD",
// "value": "0.00"
// }
// },
// "links": [
// {
// "rel": "self",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-XV4B-736P-PLVN-SZCE",
// "method": "GET"
// },
// {
// "rel": "send",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-XV4B-736P-PLVN-SZCE/send",
// "method": "POST"
// },
// {
// "rel": "update",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-XV4B-736P-PLVN-SZCE/update",
// "method": "PUT"
// },
// {
// "rel": "delete",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-XV4B-736P-PLVN-SZCE",
// "method": "DELETE"
// }
// ]
// },
// {
// "id": "INV2-ZG2H-HKAW-PMWU-N6ZR",
// "number": "0001",
// "status": "SENT",
// "merchant_info": {
// "email": "smith-facilitator@chilkatsoft.com"
// },
// "billing_info": [
// {
// "email": "smith-buyer@chilkatsoft.com"
// }
// ],
// "shipping_info": {
// "email": "smith-buyer@chilkatsoft.com",
// "first_name": "Sally",
// "last_name": "Patient",
// "business_name": "Not applicable"
// },
// "invoice_date": "2016-11-15 PST",
// "payment_term": {
// "due_date": "2016-12-30 PST"
// },
// "note": "Medical Invoice 16 Jul, 2013 PST",
// "total_amount": {
// "currency": "USD",
// "value": "500.00"
// },
// "metadata": {
// "created_date": "2016-11-15 06:17:03 PST",
// "payer_view_url": "https://www.sandbox.paypal.com/cgi_bin/webscr?cmd=_pay-inv&viewtype=altview&id=INV2-ZG2H-HKAW-PMWU-N6ZR"
// },
// "paid_amount": {
// "paypal": {
// "currency": "USD",
// "value": "0.00"
// },
// "other": {
// "currency": "USD",
// "value": "0.00"
// }
// },
// "refunded_amount": {
// "paypal": {
// "currency": "USD",
// "value": "0.00"
// },
// "other": {
// "currency": "USD",
// "value": "0.00"
// }
// },
// "links": [
// {
// "rel": "self",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-ZG2H-HKAW-PMWU-N6ZR",
// "method": "GET"
// },
// {
// "rel": "update",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-ZG2H-HKAW-PMWU-N6ZR/update",
// "method": "PUT"
// },
// {
// "rel": "cancel",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-ZG2H-HKAW-PMWU-N6ZR/remind",
// "method": "POST"
// },
// {
// "rel": "remind",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-ZG2H-HKAW-PMWU-N6ZR/cancel",
// "method": "POST"
// },
// {
// "rel": "record-payment",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-ZG2H-HKAW-PMWU-N6ZR/record-payment",
// "method": "POST"
// },
// {
// "rel": "qr-code",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices/INV2-ZG2H-HKAW-PMWU-N6ZR/qr-code",
// "method": "GET"
// }
// ]
// }
// ],
// "links": [
// {
// "rel": "self",
// "href": "https://api.sandbox.paypal.com/v1/invoicing/invoices?page=0&page_size=20&total_count_required=true",
// "method": "GET"
// }
// ]
// }
//
jsonToken.Free;
sbAuth.Free;
rest.Free;
sbJsonResponse.Free;
json.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.