Pascal (Lazarus/Delphi)

MedTunnel: Get Message Attachment

See more MedTunnel Examples

Get a specific attachment of a message. The MessageId and AttachmentId are obtained from the "Get Mailbox Messages" example. 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.BinData,
  Chilkat.Http;

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

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  bd: TBinData;
  respStatusCode: Integer;

begin
  success := False;

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

  http := THttp.Create;

  //  Implements the following CURL command:

  //  curl -X GET -k 
  //          -H "Authorization:PutAuthorizationTokenHere" 
  //          https://server.medtunnel.com/medtunnelmsg/api/Message/GetAttachment?messageid=989448&attachmentid=424857&setreadflag=false

  //  Use the following online tool to generate HTTP code from a CURL command
  //  Convert a cURL Command to HTTP Source Code

  http.SetRequestHeader('Authorization','PutAuthorizationTokenHere');

  //  The messageId and attachmentId are contained in the response from reading the mailbox messages.
  http.SetUrlVar('messageId','989448');
  http.SetUrlVar('attachmentId','424857');
  http.SetUrlVar('setReadFlag','false');

  //  Download the attachment data into bd.
  bd := TBinData.Create;
  success := http.QuickGetBd('https://server.medtunnel.com/MedTunnelMsg/api/Message/GetAttachment?messageid={$messageId}&attachmentid={$attachmentId}&setreadflag={$setReadFlag}',bd);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  respStatusCode := http.LastStatus;
  WriteLn('Response Status Code = ' + respStatusCode);
  if (respStatusCode >= 400) then
    begin
      WriteLn('Response Header:');
      WriteLn(http.LastHeader);
      //  For errors, the response body contains an error message instead of the actual attachment data.
      WriteLn('Response Body:');
      WriteLn(bd.GetString('utf-8'));
      WriteLn('Failed.');
      Exit;
    end;

  //  Save the attachment data.
  //  The attachment filename is also contained in the response from reading the mailbox messages.
  success := bd.WriteFile('qa_output/starfish.jpg');
  if (success <> True) then
    begin
      WriteLn('Failed to save attachment file.');
    end
  else
    begin
      WriteLn('Success.');
    end;


  http.Free;
  bd.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.