(Delphi DLL) 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 non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

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

...

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

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

jsonToken := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/msGraphCalendar.json');
if (success = False) then
  begin
    Memo1.Lines.Add(CkJsonObject__lastErrorText(jsonToken));
    Exit;
  end;
CkHttp_putAuthToken(http,CkJsonObject__stringOf(jsonToken,'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 := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'subject','Let''s go for lunch');
CkJsonObject_UpdateString(json,'body.contentType','HTML');
CkJsonObject_UpdateString(json,'body.content','Does mid month work for you?');
CkJsonObject_UpdateString(json,'start.dateTime','2019-11-15T12:00:00');
CkJsonObject_UpdateString(json,'start.timeZone','Pacific Standard Time');
CkJsonObject_UpdateString(json,'end.dateTime','2019-11-15T14:00:00');
CkJsonObject_UpdateString(json,'end.timeZone','Pacific Standard Time');
CkJsonObject_UpdateString(json,'location.displayName','Harry''s Bar');
CkJsonObject_UpdateString(json,'attendees[0].emailAddress.address','adelev@contoso.onmicrosoft.com');
CkJsonObject_UpdateString(json,'attendees[0].emailAddress.name','Adele Vance');
CkJsonObject_UpdateString(json,'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
CkHttp_SetUrlVar(http,'id','AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEGAAAA5_vF7TKKdE6bGCRqXyl2PQAClEpRTgAAAA==');
resp := CkHttp_PostJson3(http,'https://graph.microsoft.com/v1.0/me/calendars/{$id}/events','application/json',json);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
CkJsonObject_putEmitCompact(json,False);

if (CkHttpResponse_getStatusCode(resp) <> 201) then
  begin
    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Failed, response status code = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
    CkHttpResponse_Dispose(resp);
    Exit;
  end;
CkHttpResponse_Dispose(resp);

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

// 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 := CkJsonObject__stringOf(json,'"@odata.context"');
odataEtag := CkJsonObject__stringOf(json,'"@odata.etag"');
id := CkJsonObject__stringOf(json,'id');
createdDateTime := CkJsonObject__stringOf(json,'createdDateTime');
lastModifiedDateTime := CkJsonObject__stringOf(json,'lastModifiedDateTime');
changeKey := CkJsonObject__stringOf(json,'changeKey');
originalStartTimeZone := CkJsonObject__stringOf(json,'originalStartTimeZone');
originalEndTimeZone := CkJsonObject__stringOf(json,'originalEndTimeZone');
iCalUId := CkJsonObject__stringOf(json,'iCalUId');
reminderMinutesBeforeStart := CkJsonObject_IntOf(json,'reminderMinutesBeforeStart');
isReminderOn := CkJsonObject_BoolOf(json,'isReminderOn');
hasAttachments := CkJsonObject_BoolOf(json,'hasAttachments');
subject := CkJsonObject__stringOf(json,'subject');
bodyPreview := CkJsonObject__stringOf(json,'bodyPreview');
importance := CkJsonObject__stringOf(json,'importance');
sensitivity := CkJsonObject__stringOf(json,'sensitivity');
isAllDay := CkJsonObject_BoolOf(json,'isAllDay');
isCancelled := CkJsonObject_BoolOf(json,'isCancelled');
isOrganizer := CkJsonObject_BoolOf(json,'isOrganizer');
responseRequested := CkJsonObject_BoolOf(json,'responseRequested');
seriesMasterId := CkJsonObject__stringOf(json,'seriesMasterId');
showAs := CkJsonObject__stringOf(json,'showAs');
type := CkJsonObject__stringOf(json,'type');
webLink := CkJsonObject__stringOf(json,'webLink');
onlineMeetingUrl := CkJsonObject__stringOf(json,'onlineMeetingUrl');
recurrence := CkJsonObject__stringOf(json,'recurrence');
responseStatusResponse := CkJsonObject__stringOf(json,'responseStatus.response');
responseStatusTime := CkJsonObject__stringOf(json,'responseStatus.time');
bodyContentType := CkJsonObject__stringOf(json,'body.contentType');
bodyContent := CkJsonObject__stringOf(json,'body.content');
startDateTime := CkJsonObject__stringOf(json,'start.dateTime');
startTimeZone := CkJsonObject__stringOf(json,'start.timeZone');
endDateTime := CkJsonObject__stringOf(json,'end.dateTime');
endTimeZone := CkJsonObject__stringOf(json,'end.timeZone');
locationDisplayName := CkJsonObject__stringOf(json,'location.displayName');
locationLocationType := CkJsonObject__stringOf(json,'location.locationType');
locationUniqueId := CkJsonObject__stringOf(json,'location.uniqueId');
locationUniqueIdType := CkJsonObject__stringOf(json,'location.uniqueIdType');
organizerEmailAddressName := CkJsonObject__stringOf(json,'organizer.emailAddress.name');
organizerEmailAddressAddress := CkJsonObject__stringOf(json,'organizer.emailAddress.address');
i := 0;
count_i := CkJsonObject_SizeOfArray(json,'categories');
while i < count_i do
  begin
    CkJsonObject_putI(json,i);
    // ...
    i := i + 1;
  end;

i := 0;
count_i := CkJsonObject_SizeOfArray(json,'locations');
while i < count_i do
  begin
    CkJsonObject_putI(json,i);
    displayName := CkJsonObject__stringOf(json,'locations[i].displayName');
    locationType := CkJsonObject__stringOf(json,'locations[i].locationType');
    uniqueId := CkJsonObject__stringOf(json,'locations[i].uniqueId');
    uniqueIdType := CkJsonObject__stringOf(json,'locations[i].uniqueIdType');
    i := i + 1;
  end;

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

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

CkHttp_Dispose(http);
CkJsonObject_Dispose(jsonToken);
CkJsonObject_Dispose(json);

end;