Delphi ActiveX Requires Chilkat v11.0.0+

VoiceBase -- Upload a Media File with a JSON Configuration

See more VoiceBase Examples

This example uploads a media file and also provides a configuration file. Delphi ActiveX

var
success: Integer;
accessToken: WideString;
http: TChilkatHttp;
req: TChilkatHttpRequest;
sbAuth: TChilkatStringBuilder;
json: TChilkatJsonObject;
jConfig: TChilkatJsonObject;
jKeywords: TChilkatJsonObject;
jGroups: TChilkatJsonArray;
resp: TChilkatHttpResponse;

begin
success := 0;

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

//  Insert your Bearer token here:
accessToken := 'VOICEBASE_TOKEN';

http := TChilkatHttp.Create(Self);

req := TChilkatHttpRequest.Create(Self);
req.HttpVerb := 'POST';
req.Path := '/v2-beta/media';
req.ContentType := 'multipart/form-data';

//  Add the access (bearer) token to the request, which is a header
//  having the following format:
//  Authorization: Bearer <userAccessToken>
sbAuth := TChilkatStringBuilder.Create(Self);
sbAuth.Append('Bearer ');
sbAuth.Append(accessToken);
req.AddHeader('Authorization',sbAuth.GetAsString());

success := req.AddFileForUpload2('media','qa_data/wav/msg_123_abc.wav','audio/x-wav');
if (success = 0) then
  begin
    Memo1.Lines.Add(req.LastErrorText);
    Exit;
  end;

//  This is the JSON of the configuration to be added as a parameter to the upload:
//  (Obviously, if you want a callback, you would use a URL that goes to your own web server..)

//  	{ 
//  	   "configuration":{ 
//  	      "publish":{ 
//  	         "callbacks":[
//  	            { 
//  	               "url":"https://www.chilkatsoft.com/dss/update_vm_transcription.asp",
//  	               "method":"POST",
//  	               "include":[
//  	                  "transcripts",
//  	                  "keywords",
//  	                  "topics",
//  	                  "metadata"
//  	               ]
//  	            }
//  	         ]
//  	      },
//  	      "keywords":{ 
//  	         "groups":[]
//  	      }
//  	   }
//  	}

//  This code produces the above JSON.
json := TChilkatJsonObject.Create(Self);
json.UpdateString('configuration.publish.callbacks[0].url','https://www.chilkatsoft.com/dss/update_vm_transcription.asp');
json.UpdateString('configuration.publish.callbacks[0].method','POST');
json.UpdateString('configuration.publish.callbacks[0].include[0]','transcripts');
json.UpdateString('configuration.publish.callbacks[0].include[1]','keywords');
json.UpdateString('configuration.publish.callbacks[0].include[2]','topics');
json.UpdateString('configuration.publish.callbacks[0].include[3]','metadata');

jConfig := TChilkatJsonObject.Create(Self);
json.ObjectOf2('configuration',jConfig.ControlInterface);

jKeywords := TChilkatJsonObject.Create(Self);
jConfig.AppendObject2('keywords',jKeywords.ControlInterface);

jGroups := TChilkatJsonArray.Create(Self);
jKeywords.AppendArray2('groups',jGroups.ControlInterface);

//  Add the configuration JSON to the upload.
req.AddParam('configuration',json.Emit());

//  Do the upload..
resp := TChilkatHttpResponse.Create(Self);
success := http.HttpSReq('apis.voicebase.com',443,1,req.ControlInterface,resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

//  Examine the response status code and body.
Memo1.Lines.Add('Response status code = ' + IntToStr(resp.StatusCode));

//  The response should be JSON, even if an error.
json.Load(resp.BodyStr);
json.EmitCompact := 0;

Memo1.Lines.Add(json.Emit());

//  A successful response will have a status code = 200
if (resp.StatusCode <> 200) then
  begin
    Memo1.Lines.Add('Failed.');
  end
else
  begin
    Memo1.Lines.Add('mediaId: ' + json.StringOf('mediaId'));
    Memo1.Lines.Add('href: ' + json.StringOf('_links.self.href'));
    Memo1.Lines.Add('status: ' + json.StringOf('status'));
    Memo1.Lines.Add('Success.');
  end;

//  Here is an example of a successful response:

//  	{ 
//  	  "_links": { 
//  	    "self": { 
//  	      "href": "/v2-beta/media/856a1e85-c847-4c3c-b7a4-6cf15cd51db4"
//  	    }
//  	  },
//  	  "mediaId": "856a1e85-c847-4c3c-b7a4-6cf15cd51db4",
//  	  "status": "accepted",
//  	  "metadata": {}
//  	}