Pascal (Lazarus/Delphi)

OneDrive -- List Non-Root Directory

See more OneDrive Examples

This gets the collection of DriveItem children for a non-root DriveItem. This is the same as for getting the children for the root DriveItem, except the URL includes the path to the desired non-root DriveItem.

Note: This example requires Chilkat v9.5.0.97 or greater.

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.JsonObject,
  Chilkat.CkDateTime;

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

procedure RunDemo;
var
  success: Boolean;
  json: TJsonObject;
  http: THttp;
  resp: string;
  lastMod: TCkDateTime;
  photoTaken: TCkDateTime;
  i: Integer;
  numItems: Integer;

begin
  success := False;

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

  //  This example uses the OAuth client credentials flow.
  //  See How to Create an Azure App Registration for OAuth 2.0 Client Credentials

  //  Use your client ID, client secret, and tenant ID in the following lines
  json := TJsonObject.Create;
  json.UpdateString('client_id','2871da2c-8176-4b7f-869b-2311aa82e743');
  json.UpdateString('client_secret','2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH');
  json.UpdateString('scope','https://graph.microsoft.com/.default');
  json.UpdateString('token_endpoint','https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token');

  http := THttp.Create;
  http.AuthToken := json.Emit();

  //  Send a Get request like this:
  //  GET /users/{user-id}/drive/root:/{item-path}:/children

  //  This example will get the DriveItems in /TestDir
  //  (In other words, we're getting the directory listing for /TestDir.)
  http.SetUrlVar('item_path','/TestDir');
  http.SetUrlVar('user_id','4fe732c3-322e-4a6b-b729-2fd1eb5c6104');

  resp := http.QuickGetStr('https://graph.microsoft.com/v1.0/users/{$user_id}/drive/root:{$item_path}:/children');
  if (http.LastMethodSuccess <> True) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  //  The response should be JSON.
  json.EmitCompact := False;
  json.Load(resp);

  //  A successful response should return a status code of 200.
  if (http.LastStatus <> 200) then
    begin
      WriteLn(json.Emit());
      WriteLn('Response status = ' + http.LastStatus);
      Exit;
    end;

  WriteLn(json.Emit());

  lastMod := TCkDateTime.Create;
  photoTaken := TCkDateTime.Create;

  //  Iterate over the DriveItems in the JSON response:
  i := 0;
  numItems := json.SizeOfArray('value');
  while i < numItems do
    begin
      json.I := i;
      WriteLn('-- DriveItem ' + i + 1);
      WriteLn('id: ' + json.StringOf('value[i].id'));
      WriteLn('name: ' + json.StringOf('value[i].name'));
      WriteLn('size: ' + json.IntOf('value[i].size'));

      //  Get the lastModifiedDateTime
      lastMod.SetFromTimestamp(json.StringOf('value[i].fileSystemInfo.lastModifiedDateTime'));

      //  Is this a folder?
      if (json.HasMember('value[i].folder') = True) then
        begin
          WriteLn('This is a folder with ' + json.IntOf('value[i].folder.childCount') + ' children');
        end;
      if (json.HasMember('value[i].file') = True) then
        begin
          WriteLn('This is a file.');
          WriteLn('SHA1 hash: ' + json.StringOf('value[i].file.hashes.sha1Hash'));
          WriteLn('mimeType: ' + json.StringOf('value[i].mimeType'));
        end;
      if (json.HasMember('value[i].image') = True) then
        begin
          WriteLn('This is an image.');
          WriteLn('height: ' + json.IntOf('value[i].image.height'));
          WriteLn('width: ' + json.IntOf('value[i].image.width'));
        end;
      if (json.HasMember('value[i].photo') = True) then
        begin
          WriteLn('This is a photo.');
          photoTaken.SetFromTimestamp(json.StringOf('value[i].photo.takenDateTime'));
          WriteLn('photo taken on ' + photoTaken.GetAsRfc822(True));
        end;
      if (json.HasMember('value[i].audio') = True) then
        begin
          WriteLn('This is an audio file.');
          WriteLn('duration: ' + json.IntOf('value[i].audio.duration'));
        end;

      i := i + 1;
    end;



  json.Free;
  http.Free;
  lastMod.Free;
  photoTaken.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.