Pascal (Lazarus/Delphi)

MS Graph Calendars List

See more Microsoft Calendar Examples

Get all the user's calendars (/calendars navigation property), get the calendars from the default calendar group or from a specific calendar group.

For more details, see https://docs.microsoft.com/en-us/graph/api/user-list-calendars?view=graph-rest-1.0

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.JsonObject,
  Chilkat.Http;

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

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  jsonToken: TJsonObject;
  strResponse: string;
  json: TJsonObject;
  odataContext: string;
  i: Integer;
  count_i: Integer;
  id: string;
  name: string;
  color: string;
  changeKey: string;
  canShare: Boolean;
  canViewPrivateItems: Boolean;
  canEdit: Boolean;
  ownerName: string;
  ownerAddress: string;

begin
  success := False;

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

  http := THttp.Create;

  //  Use your previously obtained access token as shown here:
  //     Get Microsoft Graph OAuth2 Access Token with Calendars.ReadWrite scope.

  jsonToken := TJsonObject.Create;
  success := jsonToken.LoadFile('qa_data/tokens/msGraphCalendar.json');
  if (success = False) then
    begin
      WriteLn(jsonToken.LastErrorText);
      Exit;
    end;
  http.AuthToken := jsonToken.StringOf('access_token');

  //  Send a GET request to https://graph.microsoft.com/v1.0/me/calendars
  strResponse := http.QuickGetStr('https://graph.microsoft.com/v1.0/me/calendars');
  if (http.LastMethodSuccess = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  json := TJsonObject.Create;
  json.Load(strResponse);
  json.EmitCompact := False;

  if (http.LastStatus <> 200) then
    begin
      WriteLn(json.Emit());
      WriteLn('Failed, response status code = ' + http.LastStatus);
      Exit;
    end;

  WriteLn(json.Emit());

  //  Sample output:

  //  {
  //    "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('admin%40chilkat.io')/calendars",
  //    "value": [
  //      {
  //        "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEGAAAA5_vF7TKKdE6bGCRqXyl2PQAAAiCsAAAA",
  //        "name": "Calendar",
  //        "color": "auto",
  //        "changeKey": "5+vF7TKKdE6bGCRqXyl2PQAAAAAiEQ==",
  //        "canShare": true,
  //        "canViewPrivateItems": true,
  //        "canEdit": true,
  //        "owner": {
  //          "name": "...",
  //          "address": "outlook_3A33FCEB9B74CC15@outlook.com"
  //        }
  //      },
  //      {
  //        "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEGAAAA5_vF7TKKdE6bGCRqXyl2PQAClEpRTgAAAA==",
  //        "name": "Work",
  //        "color": "auto",
  //        "changeKey": "5+vF7TKKdE6bGCRqXyl2PQAClHjDcA==",
  //        "canShare": true,
  //        "canViewPrivateItems": true,
  //        "canEdit": true,
  //        "owner": {
  //          "name": "...",
  //          "address": "outlook_3A33FCEB9B74CC15@outlook.com"
  //        }
  //      }
  //    ]
  //  }
  //  
  //  Use this online tool to generate parsing code from sample JSON: 
  //  Generate Parsing Code from JSON

  odataContext := json.StringOf('"@odata.context"');
  i := 0;
  count_i := json.SizeOfArray('value');
  while i < count_i do
    begin
      json.I := i;
      id := json.StringOf('value[i].id');
      name := json.StringOf('value[i].name');
      color := json.StringOf('value[i].color');
      changeKey := json.StringOf('value[i].changeKey');
      canShare := json.BoolOf('value[i].canShare');
      canViewPrivateItems := json.BoolOf('value[i].canViewPrivateItems');
      canEdit := json.BoolOf('value[i].canEdit');
      ownerName := json.StringOf('value[i].owner.name');
      ownerAddress := json.StringOf('value[i].owner.address');
      i := i + 1;
    end;

  WriteLn('Success.');


  http.Free;
  jsonToken.Free;
  json.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.