Delphi DLL

Google Contacts - Adding/Updating a photo for a contact

See more Google APIs Examples

Demonstrates how to upload a photo for a Google Contact. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, StringBuilder, AuthGoogle, BinData, JsonObject, Rest;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
jsonToken: HCkJsonObject;
gAuth: HCkAuthGoogle;
rest: HCkRest;
bAutoReconnect: Boolean;
sbPath: HCkStringBuilder;
numReplacements: Integer;
pngData: HCkBinData;
sbResponseBody: HCkStringBuilder;

begin
success := False;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// --------------------------------------------------------------------------------------------------------
// Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
// Once connected, the REST object may be re-used for many REST API calls.
// (It's a good idea to put the connection setup code in a separate function/subroutine.)
// --------------------------------------------------------------------------------------------------------

// It is assumed we previously obtained an OAuth2 access token.
// This example loads the JSON access token file 
// saved by this example: Get Google Contacts OAuth2 Access Token

jsonToken := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/googleContacts.json');
if (success <> True) then
  begin
    Memo1.Lines.Add('Failed to load googleContacts.json');
    Exit;
  end;

gAuth := CkAuthGoogle_Create();
CkAuthGoogle_putAccessToken(gAuth,CkJsonObject__stringOf(jsonToken,'access_token'));

rest := CkRest_Create();

// Connect using TLS.
bAutoReconnect := True;
success := CkRest_Connect(rest,'www.google.com',443,True,bAutoReconnect);

// Provide the authentication credentials (i.e. the access token)
CkRest_SetAuthGoogle(rest,gAuth);

// ----------------------------------------------
// OK, the REST connection setup is completed..
// ----------------------------------------------

// To upload a photo for the contact, send the following:

// 	PUT /m8/feeds/photos/media/default/contactId
// 	If-match: Etag
// 	Content-Type: image/*
// 	...
// 	[Photo data bytes]

CkRest_AddHeader(rest,'GData-Version','3.0');
CkRest_AddHeader(rest,'If-Match','*');
CkRest_AddHeader(rest,'Content-Type','image/*');

sbPath := CkStringBuilder_Create();
CkStringBuilder_Append(sbPath,'/m8/feeds/photos/media/default/{contactId}');
// Upload a photo for the contact having contactId = "1ea2e4fe0ef24e09"
numReplacements := CkStringBuilder_Replace(sbPath,'{contactId}','1ea2e4fe0ef24e09');

// Let's get our photo data..
pngData := CkBinData_Create();
success := CkBinData_LoadFile(pngData,'qa_data/png/dude.png');

sbResponseBody := CkStringBuilder_Create();
success := CkRest_FullRequestBd(rest,'PUT',CkStringBuilder__getAsString(sbPath),pngData,sbResponseBody);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

// A successful response will have a status code equal to 200.
if (CkRest_getResponseStatusCode(rest) <> 200) then
  begin
    Memo1.Lines.Add('response status code = ' + IntToStr(CkRest_getResponseStatusCode(rest)));
    Memo1.Lines.Add('response status text = ' + CkRest__responseStatusText(rest));
    Memo1.Lines.Add('response header: ' + CkRest__responseHeader(rest));
    Memo1.Lines.Add('response body: ' + CkStringBuilder__getAsString(sbResponseBody));
    Exit;
  end;

// If the 200 success response was received.
Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponseBody));
Memo1.Lines.Add('Success.');

CkJsonObject_Dispose(jsonToken);
CkAuthGoogle_Dispose(gAuth);
CkRest_Dispose(rest);
CkStringBuilder_Dispose(sbPath);
CkBinData_Dispose(pngData);
CkStringBuilder_Dispose(sbResponseBody);

end;