/// <summary>
/// Get JSON with last conversation(s)
/// </summary>
/// <param name="fanpage">Fanpage object</param>
/// <param name="limitation">Is set limit = 1, to returned JSON</param>
/// <returns>JSON as string</returns>
private async Task <string> GetLastConversationJsonAsync(Fanpage fanpage, bool limitation = true)
{
string limit = limitation ? "&limit=1" : "";
var response = await client.GetAsync($"{BASE_URL}{fanpage.Id}{CONVERSATIONS_PATH}?access_token={fanpage.Token}{limit}");
return(await response.Content.ReadAsStringAsync());
}
public MainWindow()
{
fanpage = new Fanpage(config["fanpageid"], config["token"]);
conversations = new Conversations();
InitializeComponent();
LastRefreshTSLabel.Content = "None";
FanpageIDLabel.Content = config["fanpageid"];
}
/// <summary>
/// Run method periodily
/// </summary>
/// <param name="fanpage"></param>
/// <param name="firstWaiting"></param>
/// <param name="period"></param>
/// <param name="token"></param>
/// <returns></returns>
private async Task RunCheckingTaskAsync(Fanpage fanpage, TimeSpan firstWaiting, TimeSpan period, CancellationToken token)
{
if (firstWaiting > TimeSpan.Zero)
{
await Task.Delay(firstWaiting, token);
}
while (!token.IsCancellationRequested)
{
await CheckNewMessageComes(fanpage);
if (period > TimeSpan.Zero)
{
await Task.Delay(period, token);
}
}
}
/// <summary>
/// Check is newer message. If is, return true and save new DateTime into "lastConversationDateTime"
/// </summary>
/// <param name="fanpage">Fanpage object</param>
/// <returns>boolean</returns>
public async Task <bool> IsNewMessage(Fanpage fanpage)
{
string json = await GetLastConversationJsonAsync(fanpage);
JObject jObject = JObject.Parse(json);
{
var jObjectError = jObject["error"];
if (jObjectError != null)
{
string errorType = jObjectError["type"]?.ToString();
string errorMessage = jObjectError["message"]?.ToString();
MessageBox.Show(errorMessage);
Errors error = new Errors(errorType, errorMessage, errorList.Count);
errorList.Add(error);
await Errors.WriteErrorAsync(error);
return(false);
}
}
string lastConversationTimeStampString = jObject["data"][0]["updated_time"]?.ToString();
DateTime?dateTime = await StringToDatetime(lastConversationTimeStampString);
if (dateTime == null)
{
return(false);
}
if (lastConversationDateTime >= dateTime)
{
return(false);
}
lastConversationDateTime = (DateTime)dateTime;
return(true);
}
/// <summary>
///
/// </summary>
/// <param name="fanpage"></param>
/// <returns></returns>
private async Task CheckNewMessageComes(Fanpage fanpage)
{
if (wasNewMessageConfirmed)
{
bool isNewMessage = await conversations.IsNewMessage(fanpage);
if (isNewMessage)
{
wasNewMessageConfirmed = false;
}
await ConversationsInfo(isNewMessage);
TSLabel.Content = conversations.lastConversationDateTime.ToString();
LastRefreshTSLabel.Content = DateTime.Now.ToString();
}
else
{
InfosErrorsLabel.Content = "Last message wasn't confirmed. REFRESH ISN'T POSSIBLE!";
await Task.Delay(3000);
}
InfosErrorsLabel.Content = "No infos";
}
