Delphi DLL Google Calendar: Update (Patch) a Calendar Entry

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Updates an entry on the user's calendar list.
This example updates the "summary" for the calendar having the ID = "chilkatcloud.com_su2u8trmo6rlq2jh6cr9hb032o@group.calendar.google.com". The new summary will be "Party Calendar".

Documentation: https://developers.google.com/google-apps/calendar/v3/reference/calendarList/patch

var
rest: HCkRest;
success: Boolean;
oauth2: HCkOAuth2;
jsonReq: HCkJsonObject;
sbReq: HCkStringBuilder;
sbJson: HCkStringBuilder;
json: HCkJsonObject;
kind: PWideChar;
etag: PWideChar;
id: PWideChar;
summary: PWideChar;
timeZone: PWideChar;

begin
rest := CkRest_Create();

//   Provide a previously obtained OAuth2 access token.
oauth2 := CkOAuth2_Create();
CkOAuth2_putAccessToken(oauth2,'OAUTH2_ACCESS_TOKEN');
CkRest_SetAuthOAuth2(rest,oauth2);

success := CkRest_Connect(rest,'www.googleapis.com',443,True,True);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

//  The following code creates the JSON request body.
//  The JSON created by this code is shown below.
jsonReq := CkJsonObject_Create();
CkJsonObject_UpdateString(jsonReq,'summary','Party Calendar');

sbReq := CkStringBuilder_Create();
CkJsonObject_EmitSb(jsonReq,sbReq);

CkRest_AddHeader(rest,'Content-Type','application/json');

sbJson := CkStringBuilder_Create();
success := CkRest_FullRequestSb(rest,'PATCH','/calendar/v3/calendars/chilkatcloud.com_su2u8trmo6rlq2jh6cr9hb032o@group.calendar.google.com',sbReq,sbJson);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

if (CkRest_getResponseStatusCode(rest) <> 200) then
  begin
    Memo1.Lines.Add('Received error response code: ' + IntToStr(CkRest_getResponseStatusCode(rest)));
    Memo1.Lines.Add('Response body:');
    Memo1.Lines.Add(CkStringBuilder__getAsString(sbJson));
    Exit;
  end;

json := CkJsonObject_Create();
CkJsonObject_LoadSb(json,sbJson);

//  The following code parses the JSON response.
//  A sample JSON response is shown below the sample code.

kind := CkJsonObject__stringOf(json,'kind');
etag := CkJsonObject__stringOf(json,'etag');
id := CkJsonObject__stringOf(json,'id');
summary := CkJsonObject__stringOf(json,'summary');
timeZone := CkJsonObject__stringOf(json,'timeZone');

Memo1.Lines.Add('Example Completed.');

CkRest_Dispose(rest);
CkOAuth2_Dispose(oauth2);
CkJsonObject_Dispose(jsonReq);
CkStringBuilder_Dispose(sbReq);
CkStringBuilder_Dispose(sbJson);
CkJsonObject_Dispose(json);

Sample JSON Request Body

{  
"summary": "Party Calendar" 
}



  

Sample JSON Response Body

{
  "kind": "calendar#calendar",
  "etag": "\"BKjXnZpXR6E5ueFWG3UJk-2POYg/jcCkAVFAjoCovUbrUQlnks64qfY\"",
  "id": "chilkatcloud.com_su2u8trmo6rlq2jh6cr9hb032o@group.calendar.google.com",
  "summary": "Party Calendar",
  "timeZone": "UTC"
}