Delphi DLL
Outlook -- Copy Mail Folder and Contents to another Mail Folder

Copy a mailfolder and its contents to another mailfolder.
Chilkat Delphi DLL Downloads

Delphi DLL
uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, Hashtable, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
htFolderMap: HCkHashtable;
sbMap: HCkStringBuilder;
srcFolderId: PWideChar;
dstFolderId: PWideChar;
jsonRequestBody: HCkJsonObject;
resp: HCkHttpResponse;
jsonResponse: HCkJsonObject;

begin
success := False;

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

http := CkHttp_Create();

// Use your previously obtained access token here:
CkHttp_putAuthToken(http,'MICROSOFT_GRAPH_ACCESS_TOKEN');

// This example will copy /Inbox/abc/subFolderA and its contents to /Inbox/xyz
// We'll need the folder ids for both source and destination folders..

// Get the folder IDs from the folder map created by this example 
htFolderMap := CkHashtable_Create();
sbMap := CkStringBuilder_Create();
CkStringBuilder_LoadFile(sbMap,'qa_data/outlook/folderMap.xml','utf-8');
CkHashtable_AddFromXmlSb(htFolderMap,sbMap);

// Get the IDs for the source and destination folders.
srcFolderId := CkHashtable__lookupStr(htFolderMap,'/Inbox/abc/subFolderA');
if (CkHashtable_getLastMethodSuccess(htFolderMap) <> True) then
  begin
    Memo1.Lines.Add('Folder ID not found');
    Exit;
  end;
dstFolderId := CkHashtable__lookupStr(htFolderMap,'/Inbox/xyz');
if (CkHashtable_getLastMethodSuccess(htFolderMap) <> True) then
  begin
    Memo1.Lines.Add('Destination folder ID not found');
    Exit;
  end;

// Create a JSON request body with this content:
// 
// 		{
// 		  "DestinationId": "destinationId-value"
// 		}

jsonRequestBody := CkJsonObject_Create();
CkJsonObject_UpdateString(jsonRequestBody,'DestinationId',dstFolderId);

CkHttp_SetUrlVar(http,'src_folder_id',srcFolderId);

// Copy the source folder to the new location
resp := CkHttpResponse_Create();
success := CkHttp_HttpJson(http,'POST','https://graph.microsoft.com/v1.0/me/mailFolders/{$src_folder_id}/copy',jsonRequestBody,'application/json',resp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

// A 201 response indicates success.
if (CkHttpResponse_getStatusCode(resp) = 201) then
  begin
    Memo1.Lines.Add('Folder copied.');
  end
else
  begin
    Memo1.Lines.Add('Response status code = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
    Memo1.Lines.Add('Error: Folder not copied.');
  end;

// Show the response in both cases..
jsonResponse := CkJsonObject_Create();
CkJsonObject_putEmitCompact(jsonResponse,False);
CkJsonObject_Load(jsonResponse,CkHttpResponse__bodyStr(resp));
Memo1.Lines.Add(CkJsonObject__emit(jsonResponse));

// A sample successful JSON response looks like this:

// 	{
// 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#mailFolder",
// 	  "@odata.type": "#microsoft.graph.mailFolder",
// 	  "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAM6JqMAAAAA=",
// 	  "displayName": "subFolderA",
// 	  "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwEAAAA=",
// 	  "childFolderCount": 1,
// 	  "unreadItemCount": 0,
// 	  "totalItemCount": 0
// 	}

CkHttp_Dispose(http);
CkHashtable_Dispose(htFolderMap);
CkStringBuilder_Dispose(sbMap);
CkJsonObject_Dispose(jsonRequestBody);
CkHttpResponse_Dispose(resp);
CkJsonObject_Dispose(jsonResponse);

end;