(Delphi ActiveX) MS Graph Calendar Create Event

Creates a new event in a specified calendar.

For more details, see https://docs.microsoft.com/en-us/graph/api/calendar-post-events?view=graph-rest-1.0

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_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
jsonToken: TChilkatJsonObject;
success: Integer;
json: TChilkatJsonObject;
resp: IChilkatHttpResponse;
displayName: WideString;
locationType: WideString;
uniqueId: WideString;
uniqueIdType: WideString;
statusResponse: WideString;
statusTime: WideString;
emailAddressName: WideString;
emailAddressAddress: WideString;
odataContext: WideString;
odataEtag: WideString;
id: WideString;
createdDateTime: WideString;
lastModifiedDateTime: WideString;
changeKey: WideString;
originalStartTimeZone: WideString;
originalEndTimeZone: WideString;
iCalUId: WideString;
reminderMinutesBeforeStart: WideString;
isReminderOn: WideString;
hasAttachments: WideString;
subject: WideString;
bodyPreview: WideString;
importance: WideString;
sensitivity: WideString;
isAllDay: WideString;
isCancelled: WideString;
isOrganizer: WideString;
responseRequested: WideString;
seriesMasterId: WideString;
showAs: WideString;
type: WideString;
webLink: WideString;
onlineMeetingUrl: WideString;
recurrence: WideString;
responseStatusResponse: WideString;
responseStatusTime: WideString;
bodyContentType: WideString;
bodyContent: WideString;
startDateTime: WideString;
startTimeZone: WideString;
endDateTime: WideString;
endTimeZone: WideString;
locationDisplayName: WideString;
locationLocationType: WideString;
locationUniqueId: WideString;
locationUniqueIdType: WideString;
organizerEmailAddressName: WideString;
organizerEmailAddressAddress: WideString;
i: Integer;
count_i: Integer;

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 as shown here:
//    Get Microsoft Graph OAuth2 Access Token with Calendars.ReadWrite scope.

jsonToken := TChilkatJsonObject.Create(Self);
success := jsonToken.LoadFile('qa_data/tokens/msGraphCalendar.json');
if (success = 0) then
  begin
    Memo1.Lines.Add(jsonToken.LastErrorText);
    Exit;
  end;
http.AuthToken := jsonToken.StringOf('access_token');

// Create a JSON body for the HTTP POST
// Use this online tool to generate the code from sample JSON: 
// Generate Code to Create JSON

// {
//   "subject": "Let's go for lunch",
//   "body": {
//     "contentType": "HTML",
//     "content": "Does mid month work for you?"
//   },
//   "start": {
//       "dateTime": "2019-11-15T12:00:00",
//       "timeZone": "Pacific Standard Time"
//   },
//   "end": {
//       "dateTime": "2019-11-15T14:00:00",
//       "timeZone": "Pacific Standard Time"
//   },
//   "location":{
//       "displayName":"Harry's Bar"
//   },
//   "attendees": [
//     {
//       "emailAddress": {
//         "address":"adelev@contoso.onmicrosoft.com",
//         "name": "Adele Vance"
//       },
//       "type": "required"
//     }
//   ]
// }

json := TChilkatJsonObject.Create(Self);
json.UpdateString('subject','Let''s go for lunch');
json.UpdateString('body.contentType','HTML');
json.UpdateString('body.content','Does mid month work for you?');
json.UpdateString('start.dateTime','2019-11-15T12:00:00');
json.UpdateString('start.timeZone','Pacific Standard Time');
json.UpdateString('end.dateTime','2019-11-15T14:00:00');
json.UpdateString('end.timeZone','Pacific Standard Time');
json.UpdateString('location.displayName','Harry''s Bar');
json.UpdateString('attendees[0].emailAddress.address','adelev@contoso.onmicrosoft.com');
json.UpdateString('attendees[0].emailAddress.name','Adele Vance');
json.UpdateString('attendees[0].type','required');

// POST the JSON to https://graph.microsoft.com/v1.0/me/calendars/{id}/events
// This is posting to a calendar in the default calendarGroup.

// Specify the calendar id
http.SetUrlVar('id','AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEGAAAA5_vF7TKKdE6bGCRqXyl2PQAClEpRTgAAAA==');
resp := http.PostJson3('https://graph.microsoft.com/v1.0/me/calendars/{$id}/events','application/json',json.ControlInterface);
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

json.Load(resp.BodyStr);
json.EmitCompact := 0;

if (resp.StatusCode <> 201) then
  begin
    Memo1.Lines.Add(json.Emit());
    Memo1.Lines.Add('Failed, response status code = ' + IntToStr(resp.StatusCode));

    Exit;
  end;

Memo1.Lines.Add(json.Emit());

// A sample response:
// (See code for parsing this response below..)

// {
//   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('admin%40chilkat.io')/calendars('AQMkADAwATM0MDAAMS ... AClEpRTgAAAA%3D%3D')/events/$entity",
//   "@odata.etag": "W/\"5+vF7TKKdE6bGCRqXyl2PQAClIgmmw==\"",
//   "id": "AQMkADAwAT ... ApRZ7JkAAAA=",
//   "createdDateTime": "2019-04-26T14:31:39.8791929Z",
//   "lastModifiedDateTime": "2019-04-26T14:31:41.2753537Z",
//   "changeKey": "5+vF7TKKdE6bGCRqXyl2PQAClIgmmw==",
//   "categories": [
//   ],
//   "originalStartTimeZone": "Pacific Standard Time",
//   "originalEndTimeZone": "Pacific Standard Time",
//   "iCalUId": "040000008200E00074C5B7101A82E00800000000F05DF1C23CFCD40100000000000000001000000009911D155F71EF42A230FEBFE5F7486A",
//   "reminderMinutesBeforeStart": 15,
//   "isReminderOn": true,
//   "hasAttachments": false,
//   "subject": "Let's go for lunch",
//   "bodyPreview": "Does mid month work for you?",
//   "importance": "normal",
//   "sensitivity": "normal",
//   "isAllDay": false,
//   "isCancelled": false,
//   "isOrganizer": true,
//   "responseRequested": true,
//   "seriesMasterId": null,
//   "showAs": "busy",
//   "type": "singleInstance",
//   "webLink": "https://outlook.live.com/owa/?itemid=AQMkADAwATM0MDAAMS1iNTcwL...pRZ7JkAAAA%3D&exvsurl=1&path=/calendar/item",
//   "onlineMeetingUrl": null,
//   "recurrence": null,
//   "responseStatus": {
//     "response": "organizer",
//     "time": "0001-01-01T00:00:00Z"
//   },
//   "body": {
//     "contentType": "html",
//     "content": "<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\r\n<meta content=\"text/html; charset=us-ascii\">\r\n</head>\r\n<body>\r\nDoes mid month work for you?\r\n</body>\r\n</html>\r\n"
//   },
//   "start": {
//     "dateTime": "2019-11-15T12:00:00.0000000",
//     "timeZone": "Pacific Standard Time"
//   },
//   "end": {
//     "dateTime": "2019-11-15T14:00:00.0000000",
//     "timeZone": "Pacific Standard Time"
//   },
//   "location": {
//     "displayName": "Harry's Bar",
//     "locationType": "default",
//     "uniqueId": "Harry's Bar",
//     "uniqueIdType": "private"
//   },
//   "locations": [
//     {
//       "displayName": "Harry's Bar",
//       "locationType": "default",
//       "uniqueId": "Harry's Bar",
//       "uniqueIdType": "private"
//     }
//   ],
//   "attendees": [
//     {
//       "type": "required",
//       "status": {
//         "response": "none",
//         "time": "0001-01-01T00:00:00Z"
//       },
//       "emailAddress": {
//         "name": "Adele Vance",
//         "address": "adelev@contoso.onmicrosoft.com"
//       }
//     }
//   ],
//   "organizer": {
//     "emailAddress": {
//       "name": "Matt",
//       "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"');
odataEtag := json.StringOf('"@odata.etag"');
id := json.StringOf('id');
createdDateTime := json.StringOf('createdDateTime');
lastModifiedDateTime := json.StringOf('lastModifiedDateTime');
changeKey := json.StringOf('changeKey');
originalStartTimeZone := json.StringOf('originalStartTimeZone');
originalEndTimeZone := json.StringOf('originalEndTimeZone');
iCalUId := json.StringOf('iCalUId');
reminderMinutesBeforeStart := json.IntOf('reminderMinutesBeforeStart');
isReminderOn := json.BoolOf('isReminderOn');
hasAttachments := json.BoolOf('hasAttachments');
subject := json.StringOf('subject');
bodyPreview := json.StringOf('bodyPreview');
importance := json.StringOf('importance');
sensitivity := json.StringOf('sensitivity');
isAllDay := json.BoolOf('isAllDay');
isCancelled := json.BoolOf('isCancelled');
isOrganizer := json.BoolOf('isOrganizer');
responseRequested := json.BoolOf('responseRequested');
seriesMasterId := json.StringOf('seriesMasterId');
showAs := json.StringOf('showAs');
type := json.StringOf('type');
webLink := json.StringOf('webLink');
onlineMeetingUrl := json.StringOf('onlineMeetingUrl');
recurrence := json.StringOf('recurrence');
responseStatusResponse := json.StringOf('responseStatus.response');
responseStatusTime := json.StringOf('responseStatus.time');
bodyContentType := json.StringOf('body.contentType');
bodyContent := json.StringOf('body.content');
startDateTime := json.StringOf('start.dateTime');
startTimeZone := json.StringOf('start.timeZone');
endDateTime := json.StringOf('end.dateTime');
endTimeZone := json.StringOf('end.timeZone');
locationDisplayName := json.StringOf('location.displayName');
locationLocationType := json.StringOf('location.locationType');
locationUniqueId := json.StringOf('location.uniqueId');
locationUniqueIdType := json.StringOf('location.uniqueIdType');
organizerEmailAddressName := json.StringOf('organizer.emailAddress.name');
organizerEmailAddressAddress := json.StringOf('organizer.emailAddress.address');
i := 0;
count_i := json.SizeOfArray('categories');
while i < count_i do
  begin
    json.I := i;
    // ...
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('locations');
while i < count_i do
  begin
    json.I := i;
    displayName := json.StringOf('locations[i].displayName');
    locationType := json.StringOf('locations[i].locationType');
    uniqueId := json.StringOf('locations[i].uniqueId');
    uniqueIdType := json.StringOf('locations[i].uniqueIdType');
    i := i + 1;
  end;

i := 0;
count_i := json.SizeOfArray('attendees');
while i < count_i do
  begin
    json.I := i;
    type := json.StringOf('attendees[i].type');
    statusResponse := json.StringOf('attendees[i].status.response');
    statusTime := json.StringOf('attendees[i].status.time');
    emailAddressName := json.StringOf('attendees[i].emailAddress.name');
    emailAddressAddress := json.StringOf('attendees[i].emailAddress.address');
    i := i + 1;
  end;

Memo1.Lines.Add('Success.');
end;