Pascal (Lazarus/Delphi)

Create Google Photos Media Item using Upload Token

See more Google Photos Examples

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. Pascal (Lazarus/Delphi)

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.Http,
  Chilkat.HttpResponse,
  Chilkat.JsonObject;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  jsonToken: TJsonObject;
  http: THttp;
  json: TJsonObject;
  resp: THttpResponse;
  i: Integer;
  count_i: Integer;
  uploadToken: string;
  statusMessage: string;
  mediaItemId: string;
  mediaItemDescription: string;
  mediaItemProductUrl: string;
  mediaItemMimeType: string;
  mediaItemMediaMetadataCreationTime: string;
  mediaItemMediaMetadataWidth: string;
  mediaItemMediaMetadataHeight: string;
  mediaItemFilename: string;

begin
  success := False;

  //  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 := TJsonObject.Create;
  success := jsonToken.LoadFile('qa_data/tokens/googlePhotos.json');
  if (success = False) then
    begin
      WriteLn(jsonToken.LastErrorText);
      Exit;
    end;

  http := THttp.Create;

  http.AuthToken := jsonToken.StringOf('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 := TJsonObject.Create;
  json.UpdateString('albumId','ALBUM_ID');
  json.UpdateString('newMediaItems[0].description','Photo of Penguins');
  json.UpdateString('newMediaItems[0].simpleMediaItem.uploadToken','UPLOAD_TOKEN');

  resp := THttpResponse.Create;
  success := http.HttpJson('POST','https://photoslibrary.googleapis.com/v1/mediaItems:batchCreate',json,'application/json',resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  //  Examine the response status code.  Success is indicated by a status code of 200.
  WriteLn('response status code: ' + resp.StatusCode);

  json.Load(resp.BodyStr);
  json.EmitCompact := False;
  WriteLn(json.Emit());

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



  jsonToken.Free;
  http.Free;
  json.Free;
  resp.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.