Delphi DLL

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.

Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, JsonObject, CkDateTime;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
json: HCkJsonObject;
http: HCkHttp;
resp: PWideChar;
lastMod: HCkDateTime;
photoTaken: HCkDateTime;
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 := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'client_id','2871da2c-8176-4b7f-869b-2311aa82e743');
CkJsonObject_UpdateString(json,'client_secret','2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH');
CkJsonObject_UpdateString(json,'scope','https://graph.microsoft.com/.default');
CkJsonObject_UpdateString(json,'token_endpoint','https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token');

http := CkHttp_Create();
CkHttp_putAuthToken(http,CkJsonObject__emit(json));

// 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.)
CkHttp_SetUrlVar(http,'item_path','/TestDir');
CkHttp_SetUrlVar(http,'user_id','4fe732c3-322e-4a6b-b729-2fd1eb5c6104');

resp := CkHttp__quickGetStr(http,'https://graph.microsoft.com/v1.0/users/{$user_id}/drive/root:{$item_path}:/children');
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

// The response should be JSON.
CkJsonObject_putEmitCompact(json,False);
CkJsonObject_Load(json,resp);

// A successful response should return a status code of 200.
if (CkHttp_getLastStatus(http) <> 200) then
  begin
    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Response status = ' + IntToStr(CkHttp_getLastStatus(http)));
    Exit;
  end;

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

lastMod := CkDateTime_Create();
photoTaken := CkDateTime_Create();

// Iterate over the DriveItems in the JSON response:
i := 0;
numItems := CkJsonObject_SizeOfArray(json,'value');
while i < numItems do
  begin
    CkJsonObject_putI(json,i);
    Memo1.Lines.Add('-- DriveItem ' + IntToStr(i + 1));
    Memo1.Lines.Add('id: ' + CkJsonObject__stringOf(json,'value[i].id'));
    Memo1.Lines.Add('name: ' + CkJsonObject__stringOf(json,'value[i].name'));
    Memo1.Lines.Add('size: ' + IntToStr(CkJsonObject_IntOf(json,'value[i].size')));

    // Get the lastModifiedDateTime
    CkDateTime_SetFromTimestamp(lastMod,CkJsonObject__stringOf(json,'value[i].fileSystemInfo.lastModifiedDateTime'));

    // Is this a folder?
    if (CkJsonObject_HasMember(json,'value[i].folder') = True) then
      begin
        Memo1.Lines.Add('This is a folder with ' + IntToStr(CkJsonObject_IntOf(json,'value[i].folder.childCount')) + ' children');
      end;
    if (CkJsonObject_HasMember(json,'value[i].file') = True) then
      begin
        Memo1.Lines.Add('This is a file.');
        Memo1.Lines.Add('SHA1 hash: ' + CkJsonObject__stringOf(json,'value[i].file.hashes.sha1Hash'));
        Memo1.Lines.Add('mimeType: ' + CkJsonObject__stringOf(json,'value[i].mimeType'));
      end;
    if (CkJsonObject_HasMember(json,'value[i].image') = True) then
      begin
        Memo1.Lines.Add('This is an image.');
        Memo1.Lines.Add('height: ' + IntToStr(CkJsonObject_IntOf(json,'value[i].image.height')));
        Memo1.Lines.Add('width: ' + IntToStr(CkJsonObject_IntOf(json,'value[i].image.width')));
      end;
    if (CkJsonObject_HasMember(json,'value[i].photo') = True) then
      begin
        Memo1.Lines.Add('This is a photo.');
        CkDateTime_SetFromTimestamp(photoTaken,CkJsonObject__stringOf(json,'value[i].photo.takenDateTime'));
        Memo1.Lines.Add('photo taken on ' + CkDateTime__getAsRfc822(photoTaken,True));
      end;
    if (CkJsonObject_HasMember(json,'value[i].audio') = True) then
      begin
        Memo1.Lines.Add('This is an audio file.');
        Memo1.Lines.Add('duration: ' + IntToStr(CkJsonObject_IntOf(json,'value[i].audio.duration')));
      end;

    i := i + 1;
  end;

CkJsonObject_Dispose(json);
CkHttp_Dispose(http);
CkDateTime_Dispose(lastMod);
CkDateTime_Dispose(photoTaken);

end;