private async Task <string> HandleMessageAsync(Message message)
{
if (message.Text.StartsWith("/subscribe"))
{
await SubscriptionDB.CreateAsync(new TelegramSubscription { ChatId = message.Chat.Id }).ConfigureAwait(false);
return("Welcome! You subscribed to the notifications.");
}
if (message.Text.StartsWith("/ping"))
{
return("Pong!");
}
if (message.Text.StartsWith("/last"))
{
var lastMessage = await NotificationsDB.LoadLatestAsync().ConfigureAwait(false);
if (lastMessage == null)
{
return("No messages yet.");
}
var lastMessageTime = lastMessage.Timestamp + (message.Date - DateTime.UtcNow);
var formattedStatus = FormatBookingStatus(lastMessage.Status);
return($"Latest message was at {lastMessageTime:T}\n{formattedStatus}");
}
return(@"Usage:
/subscribe - subscribe to notifications
");
}
public async Task NotifyAsync(BookingStatus bookingStatus)
{
const string bookingUnavailable = "Vérification de disponibilité";
if (bookingStatus.Title.Contains(bookingUnavailable))
{
bookingStatus.PageSource = null;
}
await NotificationsDB.InsertAsync(new TelegramNotification { Status = bookingStatus }).ConfigureAwait(false);
var lastNotification = await NotificationsDB.LoadLatestAsync().ConfigureAwait(false);
if (bookingStatus.Title == lastNotification?.Status?.Title || bookingStatus.Title.Contains(bookingUnavailable))
{
return;
}
await NotifySubscribersAsync(bookingStatus).ConfigureAwait(false);
}
