(Delphi ActiveX) OneDrive -- Create a New Folder

Demonstrates how to create a new folder.

Note: This example requires Chilkat v9.5.0.68 or greater.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_v9_5_0_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
json: TChilkatJsonObject;
resp: WideString;
jsonReqBody: TChilkatJsonObject;
jObj: IChilkatJsonObject;
url: WideString;
resp: IChilkatHttpResponse;

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

http := TChilkatHttp.Create(Self);

// Use your previously obtained access token here:
// See the following examples for getting an access token:
//    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
//    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
//    Refresh Access Token (Azure AD v2.0 Endpoint).
//    Refresh Access Token (Azure AD Endpoint).

// (Make sure your token was obtained with the Files.ReadWrite scope.)
http.AuthToken := 'MICROSOFT_GRAPH_ACCESS_TOKEN';

// To create a new folder, send a POST request like this:
// POST /me/drive/items/{parent-item-id}/children

// We first need to get the item-id for the folder where the new folder will be created.
// This example will create a new folder named "abc" within /someFolder,
// so we need the item-id for /someFolder.
json := TChilkatJsonObject.Create(Self);
json.EmitCompact := 0;
resp := http.QuickGetStr('https://graph.microsoft.com/v1.0/me/drive/root:/someFolder');
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;
json.Load(resp);
if (http.LastStatus <> 200) then
  begin
    Memo1.Lines.Add('Failed to get parent folder item id, status code = ' + IntToStr(http.LastStatus));
    Exit;
  end;

// Set the URL var for the next request which will create the new folder.
http.SetUrlVar('parent_item_id',json.StringOf('id'));

// The HTTP request body should contain JSON like this:

// 	{
// 	  "name": "abc",
// 	  "folder": { }
// 	}

jsonReqBody := TChilkatJsonObject.Create(Self);
jsonReqBody.AppendString('name','abc');
jObj := jsonReqBody.AppendObject('folder');

Memo1.Lines.Add('JSON body:');
Memo1.Lines.Add(jsonReqBody.Emit());

url := 'https://graph.microsoft.com/v1.0/me/drive/items/{$parent_item_id}/children';
resp := http.PostJson2(url,'application/json',jsonReqBody.Emit());
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

json.Load(resp.BodyStr);
Memo1.Lines.Add('Response:');
Memo1.Lines.Add(json.Emit());

// A 201 response indicates success.
if (resp.StatusCode <> 201) then
  begin
    Memo1.Lines.Add('Failed to create folder.');
    Memo1.Lines.Add('Response status code = ' + IntToStr(resp.StatusCode));
  end
else
  begin
    Memo1.Lines.Add('Successfully created folder.');
  end;

// A successful response:

// 	{
// 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/drive/items('3A33FCEB9B74CC15%214862')/children/$entity",
// 	  "createdBy": {
// 	    "application": {
// 	      "displayName": "Chilkat",
// 	      "id": "441c9990"
// 	    },
// 	    "user": {
// 	      "displayName": "Matt Smith",
// 	      "id": "3a33fceb9b74cc15"
// 	    }
// 	  },
// 	  "createdDateTime": "2017-06-04T16:02:22.203Z",
// 	  "cTag": "adDozQTMzRkNFQjlCNzRDQzE1ITQ4NzAuNjM2MzIxODg5NDIyMDMwMDAw",
// 	  "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODcwLjA",
// 	  "id": "3A33FCEB9B74CC15!4870",
// 	  "lastModifiedBy": {
// 	    "application": {
// 	      "displayName": "Chilkat",
// 	      "id": "441c9990"
// 	    },
// 	    "user": {
// 	      "displayName": "Matt Smith",
// 	      "id": "3a33fceb9b74cc15"
// 	    }
// 	  },
// 	  "lastModifiedDateTime": "2017-06-04T16:02:22.203Z",
// 	  "name": "abc",
// 	  "parentReference": {
// 	    "driveId": "3a33fceb9b74cc15",
// 	    "id": "3A33FCEB9B74CC15!4862",
// 	    "name": "someFolder",
// 	    "path": "/drive/root:/someFolder"
// 	  },
// 	  "size": 0,
// 	  "webUrl": "https://1drv.ms/f/s!ABXMdJvr_DM6pgY",
// 	  "fileSystemInfo": {
// 	    "createdDateTime": "2017-06-04T16:02:22.203Z",
// 	    "lastModifiedDateTime": "2017-06-04T16:02:22.203Z"
// 	  },
// 	  "folder": {
// 	    "childCount": 0
// 	  }
// 	}
// 
// 	Successfully created folder.
end;