(Delphi DLL) Create Google Photos Media Item using Upload Token

This is the 2nd step in uploading a photo to a Google Photos album. The 1st step is to upload the media data to get an upload token. This step is to use the upload token to add the media item to an album.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
jsonToken: HCkJsonObject;
success: Boolean;
http: HCkHttp;
json: HCkJsonObject;
resp: HCkHttpResponse;
i: Integer;
count_i: Integer;
uploadToken: PWideChar;
statusMessage: PWideChar;
mediaItemId: PWideChar;
mediaItemDescription: PWideChar;
mediaItemProductUrl: PWideChar;
mediaItemMimeType: PWideChar;
mediaItemMediaMetadataCreationTime: PWideChar;
mediaItemMediaMetadataWidth: PWideChar;
mediaItemMediaMetadataHeight: PWideChar;
mediaItemFilename: PWideChar;

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

// Get the previously obtained access token.
// See Get Google Photos Access Token.

jsonToken := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/googlePhotos.json');
if (success = False) then
  begin
    Memo1.Lines.Add(CkJsonObject__lastErrorText(jsonToken));
    Exit;
  end;

http := CkHttp_Create();

CkHttp_putAuthToken(http,CkJsonObject__stringOf(jsonToken,'access_token'));

// For more information, see Google Photos Upload Media REST API Documentation

// Build a JSON body that looks like this:
// {
//   "albumId": "ALBUM_ID",
//   "newMediaItems": [
//     {
//       "description": "ITEM_DESCRIPTION",
//       "simpleMediaItem": {
//         "uploadToken": "UPLOAD_TOKEN"
//       }
//     }
//    , ...
//   ]
// }

// Use this online tool to generate the code from sample JSON: 
// Generate Code to Create JSON

// Build the above JSON:
json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'albumId','ALBUM_ID');
CkJsonObject_UpdateString(json,'newMediaItems[0].description','Photo of Penguins');
CkJsonObject_UpdateString(json,'newMediaItems[0].simpleMediaItem.uploadToken','UPLOAD_TOKEN');

resp := CkHttp_PostJson(http,'https://photoslibrary.googleapis.com/v1/mediaItems:batchCreate',CkJsonObject__emit(json));
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

// Examine the response status code.  Success is indicated by a status code of 200.
Memo1.Lines.Add('response status code: ' + IntToStr(CkHttpResponse_getStatusCode(resp)));

CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
CkJsonObject_putEmitCompact(json,False);
Memo1.Lines.Add(CkJsonObject__emit(json));

CkHttpResponse_Dispose(resp);

// Sample response:

// {
//   "newMediaItemResults": [
//     {
//       "uploadToken": "CAISiQMASsyg4M/x ... CIKFRzD3l8OpFJMRzMsd00D5w",
//       "status": {
//         "message": "OK"
//       },
//       "mediaItem": {
//         "id": "AKcbugGwtCih2tdl3s1-NMvZFaco3W7XnRwvwtj02J9DJyl6JmrLZDVUFcxQl4AT04LaNrPpsrojeTsDSzOVOF5IgKefD0Y-MQ",
//         "description": "Photo of Penguins",
//         "productUrl": "https://photos.google.com/lr/photo/AKcbugGwtCih2tdl3s1-NMvZFaco3W7XnRwvwtj02J9DJyl6JmrLZDVUFcxQl4AT04LaNrPpsrojeTsDSzOVOF5IgKefD0Y-MQ",
//         "mimeType": "image/jpeg",
//         "mediaMetadata": {
//           "creationTime": "2008-02-18T05:07:31Z",
//           "width": "1024",
//           "height": "768"
//         },
//         "filename": "penguins.jpg"
//       }
//     }
//   ]
// }

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

i := 0;
count_i := CkJsonObject_SizeOfArray(json,'newMediaItemResults');
while i < count_i do
  begin
    CkJsonObject_putI(json,i);
    uploadToken := CkJsonObject__stringOf(json,'newMediaItemResults[i].uploadToken');
    statusMessage := CkJsonObject__stringOf(json,'newMediaItemResults[i].status.message');
    mediaItemId := CkJsonObject__stringOf(json,'newMediaItemResults[i].mediaItem.id');
    mediaItemDescription := CkJsonObject__stringOf(json,'newMediaItemResults[i].mediaItem.description');
    mediaItemProductUrl := CkJsonObject__stringOf(json,'newMediaItemResults[i].mediaItem.productUrl');
    mediaItemMimeType := CkJsonObject__stringOf(json,'newMediaItemResults[i].mediaItem.mimeType');
    mediaItemMediaMetadataCreationTime := CkJsonObject__stringOf(json,'newMediaItemResults[i].mediaItem.mediaMetadata.creationTime');
    mediaItemMediaMetadataWidth := CkJsonObject__stringOf(json,'newMediaItemResults[i].mediaItem.mediaMetadata.width');
    mediaItemMediaMetadataHeight := CkJsonObject__stringOf(json,'newMediaItemResults[i].mediaItem.mediaMetadata.height');
    mediaItemFilename := CkJsonObject__stringOf(json,'newMediaItemResults[i].mediaItem.filename');
    i := i + 1;
  end;

CkJsonObject_Dispose(jsonToken);
CkHttp_Dispose(http);
CkJsonObject_Dispose(json);

end;