Pascal (Lazarus/Delphi)

MS Teamwork: Delete an Online Meeting

See more Microsoft Teams Examples

Demonstrates how to delete a Microsoft Teamwork Online Meeting

Note:If using Application access (i.e. client credentials) which is what this example is doing, then you'll need to "Configure application access to online meetings or virtual events" See https://learn.microsoft.com/en-us/graph/cloud-communication-online-meeting-application-access-policy#configure-application-access-policy

For example, here's our Powershell session to setup the policy.

Windows PowerShell
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PS C:\WINDOWS\system32> Install-Module -Name PowerShellGet -Force -AllowClobber
PS C:\WINDOWS\system32> Install-Module -Name MicrosoftTeams -Force -AllowClobber
PS C:\WINDOWS\system32> Connect-MicrosoftTeams

Account              Environment Tenant                               TenantId
-------              ----------- ------                               --------
admin@chilkat365.com AzureCloud  112d7ed6-71bf-4eba-a866-738364321bfc 112d7ed6-71bf-4eba-a866-738364321bfc

PS C:\WINDOWS\system32> New-CsApplicationAccessPolicy -Identity Test-Teams-policy -AppIds "e1cd2318-298b-4916-bfd6-78cae9938835" -Description "Want App to be able to work with Teams for a User"

Identity    : Tag:Test-Teams-policy
AppIds      : {e1cd2318-298b-4916-bfd6-78cae9938835}
Description : Want App to be able to work with Teams for a User

PS C:\WINDOWS\system32> Grant-CsApplicationAccessPolicy -PolicyName Test-Teams-policy -Identity "4ee732c3-322e-4a6b-b729-2fd1eb5c6004"
PS C:\WINDOWS\system32>

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.StringBuilder,
  Chilkat.HttpResponse,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  jsonOAuthCC: TJsonObject;
  userId: string;
  meetingId: string;
  sbUrl: TStringBuilder;
  numReplaced: Integer;
  url: string;
  resp: THttpResponse;
  jsonResp: TJsonObject;
  statusCode: Integer;

begin
  success := False;

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

  http := THttp.Create;

  //  Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
  //  access token as needed.
  jsonOAuthCC := TJsonObject.Create;

  //  --------------------------------------------------------------------------------------------------------
  //  You'll need to have registered an app in Azure beforehand.
  //  
  //  Note: Deleting an online meeting requires the following Application permission:  OnlineMeetings.ReadWrite.All
  //  
  //  See How to Create an Azure App Registration for OAuth 2.0 Client Credentials
  //  --------------------------------------------------------------------------------------------------------

  //  Use the values from your App Registration in Azure.
  jsonOAuthCC.UpdateString('client_id','e1cd2318-xxxx-4916-bfd6-xxxxxxxxxxxx');
  jsonOAuthCC.UpdateString('client_secret','K.d8Q~RoJxxxxvCj_u_xxxxxxxxxxxxxxxxxxxxx');

  //  You'll always use this scope for client credentials, because the allowed actions
  //  are determined by the App Permissions defined when you registered the app in Azure.
  jsonOAuthCC.UpdateString('scope','https://graph.microsoft.com/.default');

  //  The token endpoint includes your tenant ID.  Use your tenant ID (not the tenant ID shown here).
  jsonOAuthCC.UpdateString('token_endpoint','https://login.microsoftonline.com/112d7ed6-71bf-4eba-a866-738364321bfc/oauth2/v2.0/token');

  //  Provide the OAuth2 information. Chilkat will use this information to automatically fetch the OAuth2 access token as needed,
  http.AuthToken := jsonOAuthCC.Emit();

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

  //  To delete an online meeting, send a DELETE request like this:
  //  
  //  DELETE https://graph.microsoft.com/v1.0/users/{userId}/onlineMeetings/{meetingId}

  userId := '4ee732c3-322e-4a6b-b729-2fd1eb5c6004';
  meetingId := 'MSo0ZWU3MzJjMy0zMjJlLTRhNmItYjcyOS0yZmQxZWI1YzYwMDQqMCoqMTk6bWVldGluZ19ZemswWXpOaU9XTXRaV0l5TUMwME5EY3dMVGt4Tm1VdFlUSXpOMlF3WTJKbE9HWm1AdGhyZWFkLnYy';

  sbUrl := TStringBuilder.Create;
  sbUrl.Append('https://graph.microsoft.com/v1.0/users/{userId}/onlineMeetings/{meetingId}');
  numReplaced := sbUrl.Replace('{userId}',userId);
  numReplaced := sbUrl.Replace('{meetingId}',meetingId);

  url := sbUrl.GetAsString();
  resp := THttpResponse.Create;
  success := http.HttpNoBody('DELETE',url,resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  jsonResp := TJsonObject.Create;
  jsonResp.Load(resp.BodyStr);
  jsonResp.EmitCompact := False;
  WriteLn(jsonResp.Emit());

  statusCode := resp.StatusCode;
  WriteLn('response status code = ' + statusCode);

  if (statusCode <> 204) then
    begin
      WriteLn('Failed.');
      Exit;
    end;

  WriteLn('Success.');


  http.Free;
  jsonOAuthCC.Free;
  sbUrl.Free;
  resp.Free;
  jsonResp.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.