Pascal (Lazarus/Delphi)

VoiceBase -- Compound Expression Search

See more VoiceBase Examples

Demonstrates how to do a VoiceBase compound expression search. See VoiceBase Search for more details about Search. 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.CkDateTime,
  Chilkat.DtObj,
  Chilkat.HttpResponse,
  Chilkat.StringBuilder,
  Chilkat.JsonObject,
  Chilkat.HttpRequest;

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

procedure RunDemo;
var
  success: Boolean;
  accessToken: string;
  http: THttp;
  req: THttpRequest;
  sbAuth: TStringBuilder;
  resp: THttpResponse;
  json: TJsonObject;
  dt: TCkDateTime;
  dtObj: TDtObj;
  mediaCount: Integer;
  i: Integer;
  dateCreated: string;
  localTime: Boolean;

begin
  success := False;

  //  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 := THttp.Create;

  req := THttpRequest.Create;
  req.HttpVerb := 'GET';
  req.Path := '/v2-beta/media';

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

  //  Search for media containing the terms any of the terms "test", "number", or "three"
  req.AddParam('query','"test" OR "number" OR "three"');

  resp := THttpResponse.Create;
  success := http.HttpSReq('apis.voicebase.com',443,True,req,resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  //  Examine the response status code and body.
  WriteLn('Response status code = ' + resp.StatusCode);

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

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

  //  See the sample JSON response below..

  //  Iterate over the JSON like this:
  dt := TCkDateTime.Create;
  dtObj := TDtObj.Create;

  mediaCount := json.SizeOfArray('media');
  i := 0;
  while i < mediaCount do
    begin
      json.I := i;

      WriteLn('-- ' + i + ' --');
      WriteLn('  mediaId: ' + json.StringOf('media[i].mediaId'));
      WriteLn('  status: ' + json.StringOf('media[i].status'));
      WriteLn('  contentType: ' + json.StringOf('media[i].metadata.contentType'));
      WriteLn('  milliseconds: ' + json.StringOf('media[i].metadata.length.milliseconds'));
      WriteLn('  descriptive: ' + json.StringOf('media[i].metadata.length.descriptive'));
      dateCreated := json.StringOf('media[i].dateCreated');
      dt.SetFromTimestamp(dateCreated);

      localTime := True;
      dt.ToDtObj(localTime,dtObj);

      WriteLn('  ' + dtObj.Month + '/' + dtObj.Day + '  ' + dtObj.Hour + ':' + dtObj.Minute);

      i := i + 1;
    end;

  WriteLn('Finished.');

  //  A sample JSON response:

  //  { 
  //    "_links": { 
  //      "self": { 
  //        "href": "/v2-beta/media"
  //      }
  //    },
  //    "media": [
  //      { 
  //        "mediaId": "26063536-FFFF-4020-93ba-0878112d834b",
  //        "status": "finished",
  //        "metadata": { 
  //          "contentType": "audio/x-wav",
  //          "length": { 
  //            "milliseconds": 85141,
  //            "descriptive": "85.0 sec"
  //          }
  //        },
  //        "dateCreated": "2017-01-19T16:49:32.000Z"
  //      },
  //      { 
  //        "mediaId": "8163fbbc-FFFF-4794-aa95-045420bb321d",
  //        "status": "finished",
  //        "metadata": { 
  //          "contentType": "audio/x-wav",
  //          "length": { 
  //            "milliseconds": 65342,
  //            "descriptive": "65.0 sec"
  //          }
  //        },
  //        "dateCreated": "2017-01-19T20:08:49.000Z"
  //      },
  //  ...
  //  ...
  //      { 
  //        "mediaId": "b01e27be-FFFF-4b62-8802-6dc66a75c4d3",
  //        "status": "finished",
  //        "metadata": { 
  //          "contentType": "audio/x-wav",
  //          "length": { 
  //            "milliseconds": 11581,
  //            "descriptive": "11.0 sec"
  //          }
  //        },
  //        "dateCreated": "2017-02-06T20:55:43.000Z"
  //      }
  //    ]
  //  }


  http.Free;
  req.Free;
  sbAuth.Free;
  resp.Free;
  json.Free;
  dt.Free;
  dtObj.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.