async void SendNotification()
{
try
{
HttpResponseMessage response = await NotificationRequest.GetNotPulledNotifications();
if (response.IsSuccessStatusCode)
{
string response_content = await response.Content.ReadAsStringAsync();
List <AppUserNotification> user_notifications = JsonConvert.DeserializeObject <List <AppUserNotification> >(response_content);
if (user_notifications.Any())
{
foreach (AppUserNotification user_notification in user_notifications)
{
HttpResponseMessage responseOb = await ObservationRequest.GetObservationById(user_notification.Observation);
if (responseOb.IsSuccessStatusCode)
{
string response_contentOb = await responseOb.Content.ReadAsStringAsync();
RequestObservation observation = JsonConvert.DeserializeObject <RequestObservation>(response_contentOb);
string title = "🚨 Good news! 🚨";
string message = "💰 Your observed product: " + observation.Product.Title + " is now available for: €" + user_notification.Notified_price + " 💰";
notificationManager.SendNotification(title, message);
}
else
{
if (responseOb.StatusCode == System.Net.HttpStatusCode.BadGateway)
{
await DisplayAlert("Try Again!", "No connection with the server", "OK");
}
if (responseOb.StatusCode == System.Net.HttpStatusCode.BadRequest)
{
await DisplayAlert("Try Again!", "Invalid request", "OK");
}
}
}
}
}
else
{
if (response.StatusCode == System.Net.HttpStatusCode.BadGateway)
{
await DisplayAlert("Try Again!", "No connection with the server", "OK");
}
if (response.StatusCode == System.Net.HttpStatusCode.BadRequest)
{
await DisplayAlert("Try Again!", "Invalid request", "OK");
}
}
}
catch (Exception ex)
{
Console.WriteLine("No notification");
}
}
private async void FillPage()
{
List <OutputNotification> output_list = new List <OutputNotification>();
HttpResponseMessage response = await NotificationRequest.GetAllNotifications();
if (response.IsSuccessStatusCode)
{
string response_content = await response.Content.ReadAsStringAsync();
List <AppUserNotification> notifications_list = JsonConvert.DeserializeObject <List <AppUserNotification> >(response_content);
foreach (AppUserNotification notification in notifications_list)
{
HttpResponseMessage responseOb = await ObservationRequest.GetObservationById(notification.Observation);
if (responseOb.IsSuccessStatusCode)
{
string response_contentOb = await responseOb.Content.ReadAsStringAsync();
RequestObservation observation = JsonConvert.DeserializeObject <RequestObservation>(response_contentOb);
if (observation != null)
{
OutputNotification output_value = new OutputNotification(observation, notification);
output_list.Add(output_value);
}
}
else
{
if (response.StatusCode == System.Net.HttpStatusCode.BadGateway)
{
await DisplayAlert("Attention!!!", "No connection with the server", "OK");
}
if (response.StatusCode == System.Net.HttpStatusCode.BadRequest)
{
await DisplayAlert("Try Again!", "Invalid request", "OK");
}
}
}
Notifications = output_list;
MyCollectionView.ItemsSource = Notifications;
}
else
{
if (response.StatusCode == System.Net.HttpStatusCode.BadGateway)
{
await DisplayAlert("Attention!!!", "No connection with the server", "OK");
}
if (response.StatusCode == System.Net.HttpStatusCode.BadRequest)
{
await DisplayAlert("Try Again!", "Invalid request", "OK");
}
}
}
async private void InsertObservation(object sender, EventArgs e)
{
string result = await DisplayPromptAsync("What's your desired price?", "Insert a threshold price", keyboard : Keyboard.Numeric);
string email;
if (result != null)
{
try
{
email = await SecureStorage.GetAsync("email");
RequestObservation observation = new RequestObservation(Page_product, result, email);
string json = JsonConvert.SerializeObject(observation);
HttpResponseMessage response = await ObservationRequest.InsertObservation(json);
if (response.IsSuccessStatusCode)
{
string response_content = await response.Content.ReadAsStringAsync();
await DisplayAlert("Success!", "Observation successful", "OK");
}
else
{
if (response.StatusCode == System.Net.HttpStatusCode.BadGateway)
{
await DisplayAlert("Try Again!", "No connection with the server", "OK");
}
if (response.StatusCode == System.Net.HttpStatusCode.BadRequest)
{
await DisplayAlert("Try Again!", "Invalid request", "OK");
}
}
}
catch (Exception ex)
{
await DisplayAlert("Error!", "Something went wrong", "OK");
}
}
}
private async void UpdateOrDelete(object sender, EventArgs e)
{
Button button = (Button)sender;
string observation_product = (string)button.CommandParameter;
string action = await DisplayActionSheet("What would you like to do?", "Cancel", null, "Update Observation", "Delete Observation");
if (action == "Delete Observation")
{
HttpResponseMessage response = await ObservationRequest.DeleteObservation(observation_product);
if (response.IsSuccessStatusCode)
{
try
{
RequestObservation obs_to_remove = CompleteObservations.Find(RequestObservation => RequestObservation.Product.Id == observation_product);
CompleteObservations.Remove(obs_to_remove);
Console.WriteLine(CompleteObservations);
MyCollectionView.ItemsSource = null;
MyCollectionView.ItemsSource = CompleteObservations;
await DisplayAlert("Success!", "Observation removed", "OK");
}
catch (Exception ex)
{
await DisplayAlert("Error!", "Something went wrong", "OK");
}
}
else
{
if (response.StatusCode == System.Net.HttpStatusCode.BadGateway)
{
await DisplayAlert("Attention!!!", "No connection with the server", "OK");
}
if (response.StatusCode == System.Net.HttpStatusCode.BadRequest)
{
await DisplayAlert("Try Again!", "Invalid request", "OK");
}
}
}
else if (action == "Update Observation")
{
RequestObservation obs_to_update = CompleteObservations.Find(RequestObservation => RequestObservation.Product.Id == observation_product);
string threshold_price = await DisplayPromptAsync("What's your desired price?", "Insert a threshold price", keyboard : Keyboard.Numeric);
ModifyObservation update_observation = new ModifyObservation(obs_to_update.Email, obs_to_update.Product.Id, threshold_price);
string json = JsonConvert.SerializeObject(update_observation);
HttpResponseMessage response = await ObservationRequest.UpdateObservation(json, observation_product);
if (response.IsSuccessStatusCode)
{
int index = CompleteObservations.FindIndex(RequestObservation => RequestObservation.Product.Id == observation_product);
CompleteObservations[index].Threshold_price = string.Format("{0:f2}", threshold_price);
MyCollectionView.ItemsSource = null;
MyCollectionView.ItemsSource = CompleteObservations;
await DisplayAlert("Success!", "Observation updated", "OK");
}
else
{
if (response.StatusCode == System.Net.HttpStatusCode.BadGateway)
{
await DisplayAlert("Attention!!!", "No connection with the server", "OK");
}
if (response.StatusCode == System.Net.HttpStatusCode.BadRequest)
{
await DisplayAlert("Try Again!", "Invalid request", "OK");
}
}
}
}
