Pascal (Lazarus/Delphi)

MS Graph Calendar Update Event

See more Microsoft Calendar Examples

Update the properties of an event object. 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;
  json: TJsonObject;
  sbRequestBody: TStringBuilder;
  resp: THttpResponse;
  sbResponseBody: TStringBuilder;
  jResp: TJsonObject;
  respStatusCode: Integer;
  originalStartTimeZone: string;
  originalEndTimeZone: string;
  responseStatusResponse: string;
  responseStatusTime: string;
  recurrence: string;
  iCalUId: string;
  reminderMinutesBeforeStart: Integer;
  isOnlineMeeting: Boolean;
  onlineMeetingProvider: string;
  isReminderOn: Boolean;
  onlineMeetingJoinUrl: string;
  onlineMeetingConferenceId: string;
  onlineMeetingTollNumber: string;

begin
  success := False;

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

  http := THttp.Create;

  //  Implements the following CURL command:

  //  curl -X PATCH https://graph.microsoft.com/v1.0/me/events/{id} \
  //    -H "Content-type: application/json" \
  //    -d '{
  //    "originalStartTimeZone": "originalStartTimeZone-value",
  //    "originalEndTimeZone": "originalEndTimeZone-value",
  //    "responseStatus": {
  //      "response": "",
  //      "time": "datetime-value"
  //    },
  //    "recurrence": null,
  //    "iCalUId": "iCalUId-value",
  //    "reminderMinutesBeforeStart": 99,
  //    "isOnlineMeeting": true,
  //    "onlineMeetingProvider": "teamsForBusiness",
  //    "isReminderOn": true,
  //    "categories": ["Red category"]
  //  }'

  //  Use the following online tool to generate HTTP code from a CURL command
  //  Convert a cURL Command to HTTP Source Code

  //  Use this online tool to generate code from sample JSON:
  //  Generate Code to Create JSON

  //  The following JSON is sent in the request body.

  //  {
  //    "originalStartTimeZone": "originalStartTimeZone-value",
  //    "originalEndTimeZone": "originalEndTimeZone-value",
  //    "responseStatus": {
  //      "response": "",
  //      "time": "datetime-value"
  //    },
  //    "recurrence": null,
  //    "iCalUId": "iCalUId-value",
  //    "reminderMinutesBeforeStart": 99,
  //    "isOnlineMeeting": true,
  //    "onlineMeetingProvider": "teamsForBusiness",
  //    "isReminderOn": true,
  //    "categories": [
  //      "Red category"
  //    ]
  //  }

  json := TJsonObject.Create;
  json.UpdateString('originalStartTimeZone','originalStartTimeZone-value');
  json.UpdateString('originalEndTimeZone','originalEndTimeZone-value');
  json.UpdateString('responseStatus.response','');
  json.UpdateString('responseStatus.time','datetime-value');
  json.UpdateNull('recurrence');
  json.UpdateString('iCalUId','iCalUId-value');
  json.UpdateInt('reminderMinutesBeforeStart',99);
  json.UpdateBool('isOnlineMeeting',True);
  json.UpdateString('onlineMeetingProvider','teamsForBusiness');
  json.UpdateBool('isReminderOn',True);
  json.UpdateString('categories[0]','Red category');

  http.SetRequestHeader('Content-type','application/json');

  sbRequestBody := TStringBuilder.Create;
  json.EmitSb(sbRequestBody);

  resp := THttpResponse.Create;
  success := http.HttpSb('PATCH','https://graph.microsoft.com/v1.0/me/events/{id}',sbRequestBody,'utf-8','application/json',resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  sbResponseBody := TStringBuilder.Create;
  resp.GetBodySb(sbResponseBody);
  jResp := TJsonObject.Create;
  jResp.LoadSb(sbResponseBody);
  jResp.EmitCompact := False;

  WriteLn('Response Body:');
  WriteLn(jResp.Emit());

  respStatusCode := resp.StatusCode;
  WriteLn('Response Status Code = ' + respStatusCode);
  if (respStatusCode >= 400) then
    begin
      WriteLn('Response Header:');
      WriteLn(resp.Header);
      WriteLn('Failed.');
      Exit;
    end;

  //  Sample JSON response:
  //  (Sample code for parsing the JSON response is shown below)

  //  {
  //    "originalStartTimeZone": "originalStartTimeZone-value",
  //    "originalEndTimeZone": "originalEndTimeZone-value",
  //    "responseStatus": {
  //      "response": "",
  //      "time": "datetime-value"
  //    },
  //    "recurrence": null,
  //    "iCalUId": "iCalUId-value",
  //    "reminderMinutesBeforeStart": 99,
  //    "isOnlineMeeting": true,
  //    "onlineMeetingProvider": "teamsForBusiness",
  //    "isReminderOn": true,
  //    "onlineMeeting": {
  //      "joinUrl": "https://teams.microsoft.com/l/meetup-join/19%3ameeting_NzIyNzhlMGEtM2YyZC00ZmY0LTlhNzUtZmZjNWFmZGNlNzE2%40thread.v2/0?context=%7b%22Tid%22%3a%2272f988bf-86f1-41af-91ab-2d7cd011db47%22%2c%22Oid%22%3a%22bc55b173-cff6-457d-b7a1-64bda7d7581a%22%7d",
  //      "conferenceId": "177513992",
  //      "tollNumber": "+91 22 6241 6885"
  //    }
  //  }

  //  Sample code for parsing the JSON response...
  //  Use the following online tool to generate parsing code from sample JSON:
  //  Generate Parsing Code from JSON

  originalStartTimeZone := jResp.StringOf('originalStartTimeZone');
  originalEndTimeZone := jResp.StringOf('originalEndTimeZone');
  responseStatusResponse := jResp.StringOf('responseStatus.response');
  responseStatusTime := jResp.StringOf('responseStatus.time');
  recurrence := jResp.StringOf('recurrence');
  iCalUId := jResp.StringOf('iCalUId');
  reminderMinutesBeforeStart := jResp.IntOf('reminderMinutesBeforeStart');
  isOnlineMeeting := jResp.BoolOf('isOnlineMeeting');
  onlineMeetingProvider := jResp.StringOf('onlineMeetingProvider');
  isReminderOn := jResp.BoolOf('isReminderOn');
  onlineMeetingJoinUrl := jResp.StringOf('onlineMeeting.joinUrl');
  onlineMeetingConferenceId := jResp.StringOf('onlineMeeting.conferenceId');
  onlineMeetingTollNumber := jResp.StringOf('onlineMeeting.tollNumber');


  http.Free;
  json.Free;
  sbRequestBody.Free;
  resp.Free;
  sbResponseBody.Free;
  jResp.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.