/// <summary>
/// Quick function to animate the camera to a location
/// on the map.
/// </summary>
/// <param name="lat">Latitude to move to.</param>
/// <param name="lon">Longitude to move to.</param>
/// <param name="zoom">Level to zoom to over 100ms.</param>
public void AnimateCameraTo(double lat, double lon, float zoom = 0)
{
try
{
if (zoom == 0)
{
zoom = KCApi.Properties.Renderer.NativeMap.CameraPosition.Zoom;
}
Device.BeginInvokeOnMainThread(() =>
{
if (KCApi.Properties.MapReady && KCApi.Properties.RenderReady && NativeMap != null)
{
lock (nativeMapLock)
{
NativeMap.AnimateCamera(CameraUpdateFactory.NewLatLngZoom(new LatLng(lat, lon), zoom), 100, null);
}
}
});
}
catch (Exception e)
{
KCApi.OutputException(e);
}
}
/// <summary>
/// Function to start map and get ride location.
/// </summary>
/// <param name="sender">Event sender.</param>
/// <param name="e">Event args.</param>
public void Button_Clicked(object sender, EventArgs e)
{
if (KCApi.Properties.State == KCProperties.AppState.Accept)
{
lock (buttonLock)
{
StatusColor.IsEnabled = false;
Ride ride = new Ride();
KCApi.Properties.CurrentPosition = Task.Run(async() => await KCApi.GetCurrentPosition()).Result;
if (KCApi.Properties.CurrentPosition.Latitude == 0 && KCApi.Properties.CurrentPosition.Longitude == 0)
{
var text = "GPS signal lost. Please reenable or reenter service.";
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
}
else if (KCApi.Properties.RideStatus != KCProperties.RideStatuses.Active && KCApi.AcceptNextRide(ride) &&
KCApi.SetRideLocation(ride, KCApi.Properties.CurrentPosition.Latitude, KCApi.Properties.CurrentPosition.Longitude))
{
lock (KCApi.Properties.StateLock)
{
KCApi.Properties.State = KCProperties.AppState.Transitioning;
//Start takes only a position, which will come from the database
ride.SetDisplayAddress(KCApi.GetAddressFromPosition(new Position(ride.ClientLat, ride.ClientLong)));
KCApi.Start(ride);
Navigation.PushAsync(new MapPage());
}
}
else if (!Driver_Id.authenticated)
{
var text = "Authentication Failure";
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
if (KCApi.Properties.State == KCProperties.AppState.Accept)
{
lock (KCApi.Properties.StateLock)
{
KCApi.Properties.State = KCProperties.AppState.Transitioning;
Navigation.PopAsync();
}
}
}
else if (Status.Text == "No available rides")
{
var text = "No available rides.";
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
}
else
{
var text = "Accept ride failed.";
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
}
StatusColor.IsEnabled = true;
}
}
}
/// <summary>
/// Executes everytime the page appears.
/// Changes the app state and starts the update timer.
/// </summary>
protected override async void OnAppearing()
{
base.OnAppearing();
if (KCApi.Properties.State != KCProperties.AppState.Accept)
{
KCApi.Properties.State = KCProperties.AppState.Accept;
Timer(null, null);
if (KCApi.Properties.NetState == KCProperties.NetworkState.Disconnected)
{
lock (KCApi.Properties.StateLock)
KCApi.Properties.State = KCProperties.AppState.Transitioning;
await Navigation.PopAsync();
return;
}
KCApi.Properties.CurrentPosition = await KCApi.GetCurrentPosition();
// Location is not set
if (KCApi.Properties.CurrentPosition.Latitude == 0 && KCApi.Properties.CurrentPosition.Longitude == 0)
{
var text = "GPS signal lost. Please reenable or reenter service.";
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
}
// Driver is no longer authenticated. Send back to sign in
else if (!Driver_Id.authenticated)
{
var text = "Authentication Failure";
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
lock (KCApi.Properties.StateLock)
KCApi.Properties.State = KCProperties.AppState.Transitioning;
await Navigation.PopAsync();
}
// Driver has entered the Accept screen for the first time since logging in as CurrentRide is null
else if (KCApi.Properties.RideStatus != KCProperties.RideStatuses.Active && KCApi.Properties.CurrentRide == null)
{
Ride ride = new Ride();
if (KCApi.RecoveryCheck(ride) && KCApi.SetRideLocation(ride))
{
ride.SetDisplayAddress(KCApi.GetAddressFromPosition(new Position(ride.ClientLat, ride.ClientLong)));
KCApi.Start(ride);
lock (KCApi.Properties.StateLock)
KCApi.Properties.State = KCProperties.AppState.Transitioning;
await Navigation.PushAsync(new MapPage());
}
}
updater.Start();
}
}
/// <summary>
/// If the driver already has a ride it sets the ride id to that ride
/// in case of failure or lost connection.
/// </summary>
/// <param name="ride">Ride object to store recovery info in.</param>
/// <returns>True upon receipt of a success response, false otherwise.</returns>
public static bool RecoveryCheck(Ride ride)
{
string message = "https://" + ip + "/driver/recoveryCheck.php?token=" + Driver_Id.token + "&driverID=" + Driver_Id.driver_Id;
// Create a request for the URL.
WebRequest request = WebRequest.Create(message);
request.Timeout = timeout;
// Get the response.
string responseFromServer = "";
try
{
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// Get the stream containing content returned by the server.
Stream dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
responseFromServer = reader.ReadToEnd();
// Cleanup the streams and the response.
reader.Close();
dataStream.Close();
response.Close();
dynamic jObject = null;
if (!responseFromServer.Contains("Failure") && !responseFromServer.Contains("No"))
{
jObject = JObject.Parse(responseFromServer);
ride.SetRideID(Int32.Parse((string)jObject.result.rideID));
ride.SetRidePhoneNum((string)jObject.result.phone);
ride.SetName((string)jObject.result.name);
return(true);
}
//If the response comes back as Authentication failure then set the driver as not authenticated.
else if (responseFromServer.Contains("Authentication failure"))
{
Driver_Id.authenticated = false;
return(false);
}
return(false);
}
catch (WebException)
{
lock (Properties.NetworkStateLock)
KCApi.Properties.NetState = KCProperties.NetworkState.Disconnected;
return(false);
}
catch (Exception e)
{
KCApi.OutputException(e);
return(false);
}
}
/// <summary>
/// makes sure that the app has permission to access the
/// location and resets KCApi everytime the sign in page appears.
/// </summary>
protected override async void OnAppearing()
{
if (KCApi.Properties.State != KCProperties.AppState.SignIn)
{
KCApi.Properties.State = KCProperties.AppState.SignIn;
KCApi.Reset();
KCApi.Properties.HaveLocationPermission = await RequestPermission(Plugin.Permissions.Abstractions.Permission.Location);
}
}
/// <summary>
/// Attempts to authenticate the user. Returns true if the user
/// is authenticated with the server, false upon error or rejection.
/// </summary>
/// <param name="password">Password to include in the query.</param>
/// <param name="userName">Username to include in the query.</param>
/// <returns></returns>
public static bool Authenticate(string password, string userName)
{
string message = "https://" + ip + "/driver/auth/authenticate.php?username="******"&pwHsh=" + GetHash(password, userName);
string responseFromServer = "";
try
{
// Create a request for the URL.
WebRequest request = WebRequest.Create(message);
request.Timeout = timeout;
// Get the response.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// Get the stream containing content returned by the server.
Stream dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
responseFromServer = reader.ReadToEnd();
// Cleanup the streams and the response.
reader.Close();
dataStream.Close();
response.Close();
dynamic jObject = null;
if (!responseFromServer.Contains("Failure"))
{
jObject = JObject.Parse(responseFromServer);
Driver_Id.driver_Id = Int32.Parse((string)jObject.result.driverID);
Driver_Id.token = (string)jObject.result.token;
Driver_Id.authenticated = true;
return(true);
}
else
{
return(false);
}
}
catch (WebException)
{
lock (Properties.NetworkStateLock)
KCApi.Properties.NetState = KCProperties.NetworkState.Disconnected;
return(false);
}
catch (Exception e)
{
KCApi.OutputException(e);
return(false);
}
}
/// <summary>
/// Updates the remote server on the current location of the driver without getting ride info.
/// </summary>
/// <param name="latitude">Current latitude of the driver.</param>
/// <param name="longitude">Current longitude of the driver.</param>
/// <returns></returns>
public static bool SetDriverLocation(double latitude, double longitude)
{
string message = "https://" + ip + "/driver/updateLocation.php?driverID=" + Driver_Id.driver_Id
+ "&token=" + Driver_Id.token + "&lat=" + latitude + "&lon=" + longitude;
string responseFromServer = "";
try
{
// Create a request for the URL.
WebRequest request = WebRequest.Create(message);
request.Timeout = timeout;
// Get the response.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// Get the stream containing content returned by the server.
Stream dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
responseFromServer = reader.ReadToEnd();
// Cleanup the streams and the response.
reader.Close();
dataStream.Close();
response.Close();
}
catch (WebException)
{
lock (Properties.NetworkStateLock)
KCApi.Properties.NetState = KCProperties.NetworkState.Disconnected;
return(false);
}
catch (Exception e)
{
KCApi.OutputException(e);
return(false);
}
//If the response comes back as Authentication failure then set the driver as not authenticated.
if (responseFromServer.Contains("Authentication failure") || responseFromServer.Contains("Unable to authenticate"))
{
Driver_Id.authenticated = false;
return(false);
}
if (!responseFromServer.Contains("error"))
{
return(true);
}
return(false);
}
/// <summary>
/// Gets the salt for a user in order to hash their password.
/// </summary>
/// <param name="userName">Username from which to get the salt.</param>
/// <returns>string containing the salt.</returns>
public static string GetSalt(string userName)
{
string message = "https://" + ip + "/driver/auth/getSalt.php?username="******"";
try
{
// Create a request for the URL.
WebRequest request = WebRequest.Create(message);
request.Timeout = timeout;
// Get the response.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// Display the status.
// Get the stream containing content returned by the server.
Stream dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
responseFromServer = reader.ReadToEnd();
// Display the content.
// Cleanup the streams and the response.
reader.Close();
dataStream.Close();
response.Close();
dynamic jObject = null;
if (!responseFromServer.Contains("Failure"))
{
jObject = JObject.Parse(responseFromServer);
return((string)jObject.result.pwSlt);
}
else
{
return("error");
}
}
catch (WebException)
{
lock (Properties.NetworkStateLock)
KCApi.Properties.NetState = KCProperties.NetworkState.Disconnected;
return("No Internet connection.");
}
catch (Exception e)
{
KCApi.OutputException(e);
return("Error Connecting to Server");
}
}
/// <summary>
/// Decouples the driver from the ride and puts the ride back in the queue.
/// </summary>
/// <param name="ride">Ride object to cancel.</param>
/// <returns>True upon receipt of a success response, false otherwise.</returns>
public static bool CancelRide(Ride ride)
{
string message = "https://" + ip + "/driver/decouple.php?" + "rideID=" + ride.RideId + "&token=" + Driver_Id.token +
"&driverID=" + Driver_Id.driver_Id;
string responseFromServer = "";
// Create a request for the URL.
WebRequest request = WebRequest.Create(message);
request.Timeout = timeout;
try
{
// Get the response.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// Get the stream containing content returned by the server.
Stream dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
responseFromServer = reader.ReadToEnd();
// Cleanup the streams and the response.
reader.Close();
dataStream.Close();
response.Close();
}
catch (WebException)
{
lock (Properties.NetworkStateLock)
KCApi.Properties.NetState = KCProperties.NetworkState.Disconnected;
return(false);
}
catch (Exception e)
{
KCApi.OutputException(e);
return(false);
}
if (!responseFromServer.Contains("error"))
{
return(true);
}
return(false);
}
/// <summary>
/// Timer function which updates the driver if there are any rides in the queue.
/// </summary>
private void Timer(Object source, ElapsedEventArgs e)
{
if (KCApi.Properties.State == KCProperties.AppState.Accept)
{
string status = Task.Run(() => KCApi.CheckQueue()).Result;
if (KCApi.RecoveryCheck(new Ride()))
{
status = "Active ride ongoing";
}
if (KCApi.Properties.NetState == KCProperties.NetworkState.Disconnected)
{
var text = "Internet connection lost.";
lock (KCApi.Properties.StateLock)
{
Device.BeginInvokeOnMainThread(async() =>
{
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
KCApi.Properties.State = KCProperties.AppState.Transitioning;
await Navigation.PopAsync();
});
return;
}
}
Device.BeginInvokeOnMainThread(() =>
{
Status.Text = status;
if (status.Equals("Rides are available"))
{
StatusColor.BackgroundColor = Color.Green;
}
else
{
StatusColor.BackgroundColor = Color.Gray;
}
});
updater.Interval = 500; // Can optimize to reduce interval depending on time taken
}
}
/// <summary>
/// Moves the camera directly to the given coordinates.
/// </summary>
/// <param name="lat">Latitude to move to.</param>
/// <param name="lon">Longitude to move to.</param>
public void MoveCameraTo(double lat, double lon)
{
try
{
Device.BeginInvokeOnMainThread(() =>
{
if (KCApi.Properties.MapReady && KCApi.Properties.RenderReady && NativeMap != null)
{
lock (nativeMapLock)
{
NativeMap.MoveCamera(CameraUpdateFactory.NewLatLng(new LatLng(lat, lon)));
}
}
});
}
catch (Exception e)
{
KCApi.OutputException(e);
}
}
/// <summary>
/// Updates the address text when the ride is updated.
/// </summary>
public async void UpdateText()
{
if (KCApi.Properties.State == KCProperties.AppState.Map)
{
await Task.Run(() =>
{
while (KCApi.Properties.CurrentRide == null)
{
;
}
KCApi.Properties.CurrentRide.SetDisplayAddress(KCApi.GetAddressFromPosition(new Position(KCApi.Properties.CurrentRide.ClientLat,
KCApi.Properties.CurrentRide.ClientLong)));
Device.BeginInvokeOnMainThread(() =>
{
RiderCardText.Text = KCApi.Properties.CurrentRide.ClientName + ": " + KCApi.Properties.CurrentRide.DisplayAddress;
});
});
}
}
/// <summary>
/// Function to update the GoogleMap with the new
/// position of the rider marker.
/// </summary>
public void UpdateMarker()
{
lock (nativeMapLock)
{
Device.BeginInvokeOnMainThread(() =>
{
try
{
NativeMap.Clear();
riderPin = KCPin.CreateRiderPin(new Position(KCApi.Properties.CurrentRide.ClientLat,
KCApi.Properties.CurrentRide.ClientLong));
MarkerOptions mo = riderPin.CreateMarker();
NativeMap.AddMarker(mo);
}
catch (Exception e)
{
KCApi.OutputException(e);
}
});
}
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Plugin.CurrentActivity.CrossCurrentActivity.Current.Init(this, savedInstanceState);
Forms.Init(this, savedInstanceState);
Xamarin.FormsMaps.Init(this, savedInstanceState);
TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
var width = Resources.DisplayMetrics.WidthPixels;
var height = Resources.DisplayMetrics.HeightPixels;
var density = Resources.DisplayMetrics.Density;
KCApp.ScreenWidth = (width - 0.5f) / density;
KCApp.ScreenHeight = (height - 0.5f) / density;
KCApi.Initialize();
LoadApplication(new KCApp());
}
/// <summary>
/// When a ride is completed rideactive is set to false and the ride is compleated.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void ButtonCompleteRide(object sender, EventArgs e)
{
if (KCApi.Properties.State != KCProperties.AppState.Map)
{
return;
}
ButtonDisable();
if (!KCApi.CompleteRide(KCApi.Properties.CurrentRide))
{
var text = "There was a problem completing the ride.";
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
}
else
{
var text = "The Ride has been completed.";
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
KCApi.Properties.RideStatus = KCProperties.RideStatuses.Completed;
}
ButtonEnable();
}
/// <summary>
/// When the cancel button is pressed rideactive is set to false.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void ButtonCancelRide(object sender, EventArgs e)
{
if (KCApi.Properties.State != KCProperties.AppState.Map)
{
return;
}
ButtonDisable();
if (!KCApi.CancelRide(KCApi.Properties.CurrentRide))
{
var text = "There was a problem with cancellation.";
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
}
else
{
var text = "The Ride has been canceled.";
KCApi.Properties.RideStatus = KCProperties.RideStatuses.CanceledByDriver;
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
}
ButtonEnable();
}
//Timer which checks if the driver is still authenticated if they aren't it kicks them back to the login page.
public void CheckActive(Object source, ElapsedEventArgs e)
{
if (KCApi.Properties.State != KCProperties.AppState.Map)
{
return;
}
Task.Run(() =>
{
try
{
bool pop = false;
if (!Driver_Id.authenticated && KCApi.Properties.RideStatus == KCProperties.RideStatuses.Active)
{
pop = true;
}
//If the ride is inactive then pop back to the Accept page.
else if (KCApi.Properties.RideStatus != KCProperties.RideStatuses.Active && KCApi.Properties.RenderReady)
{
if (KCApi.Properties.RideStatus == KCProperties.RideStatuses.CanceledByRider)
{
var text = "Rider has cancelled ride.";
Device.BeginInvokeOnMainThread(() =>
{
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
});
}
pop = true;
}
else if (KCApi.Properties.NetState == KCProperties.NetworkState.Disconnected)
{
var text = "Internet connection lost.";
Device.BeginInvokeOnMainThread(() =>
{
Toast.MakeText(CrossCurrentActivity.Current.Activity, text, ToastLength.Short).Show();
});
pop = true;
}
if (pop)
{
KCApi.Stop();
activeTimer.Stop();
lock (KCApi.Properties.StateLock)
{
KCApi.Properties.State = KCProperties.AppState.Transitioning;
Device.BeginInvokeOnMainThread(async() =>
{
await Navigation.PopAsync();
});
}
}
else
{
activeTimer.Interval = 100.0f; // Can be optimized
}
}
catch (Exception ex)
{
KCApi.OutputException(ex);
}
});
}
/// <summary>
/// Sets the clients postion in the given Ride by querying
/// the remote server
/// </summary>
/// <param name="ride">The ride to store the location retrieved in.</param>
/// <param name="latitude">Current latitude of the driver.</param>
/// <param name="longitude">Current longitude of the driver.</param>
/// <returns>True upon success, false upon failure</returns>
public static bool SetRideLocation(Ride ride, double latitude = 0, double longitude = 0)
{
string message = "https://" + ip + "/driver/rideStatus.php?driverID=" + Driver_Id.driver_Id
+ "&token=" + Driver_Id.token + "&rideID=" + ride.RideId;
if (Properties.CurrentPosition.Latitude != 0 ||
Properties.CurrentPosition.Longitude != 0)
{
message += "&lat=" + latitude + "&lon=" + longitude;
}
// Create a request for the URL.
WebRequest request = WebRequest.Create(message);
request.Timeout = timeout;
// Get the response.
string responseFromServer = "";
try
{
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// Get the stream containing content returned by the server.
Stream dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
responseFromServer = reader.ReadToEnd();
// Cleanup the streams and the response.
reader.Close();
dataStream.Close();
response.Close();
}
catch (WebException)
{
lock (Properties.NetworkStateLock)
KCApi.Properties.NetState = KCProperties.NetworkState.Disconnected;
return(false);
}
catch (Exception e)
{
KCApi.OutputException(e);
return(false);
}
//If the response comes back as Authentication failure then set the driver as not authenticated.
if (responseFromServer.Contains("Authentication failure") || responseFromServer.Contains("Unable to authenticate"))
{
Driver_Id.authenticated = false;
return(false);
}
// If the response is "Ride not found", the user has canceled.
else if (responseFromServer.Contains("Ride not found"))
{
Properties.RideStatus = KCProperties.RideStatuses.CanceledByRider;
}
//check if there are any other errors
else if (!responseFromServer.Contains("error"))
{
try
{
//If there are no errors add the lat and long to the ride class and return true.\
dynamic jObject = JObject.Parse(responseFromServer);
double rideLat = Double.Parse((string)jObject.result.lat);
double rideLong = Double.Parse((string)jObject.result.lon);
ride.SetPosition(rideLat, rideLong);
return(true);
}
catch (Exception e)
{
KCApi.OutputException(e);
return(false);
}
}
return(false);
}
/// <summary>
/// Attempts to sign the user in. If location permissions are
/// denied and denied again, the app is killed.
/// </summary>
/// <param name="sender">Event sender.</param>
/// <param name="e">Event args.</param>
private void SignInClicked(object sender, EventArgs e)
{
lock (buttonLock)
{
if (KCApi.Properties.State == KCProperties.AppState.SignIn)
{
//only allow the user to get to the next page if the username and password are correct.
if (KCApi.Properties.HaveLocationPermission)
{
if ((!String.IsNullOrEmpty(username.Text) || !String.IsNullOrEmpty(password.Text)) && KCApi.Authenticate(password.Text, username.Text))
{
KCApi.Properties.State = KCProperties.AppState.Transitioning;
KCApi.Properties.NetState = KCProperties.NetworkState.Connected;
//reset the username and password fields.
username.Text = "";
password.Text = "";
Navigation.PushAsync(new AcceptPage());
}
else
{
//The username or password is incorrect.
var text = "Check your network connection and credentials and try again.";
DisplayAlert("Authentication Failure", text, "OK");
}
}
else
{
var alertDialog = new Android.App.AlertDialog.Builder(CrossCurrentActivity.Current.Activity);
alertDialog.SetTitle("Location Needed");
alertDialog.SetMessage("You must allow this app to use your location. Allow and try again.");
alertDialog.SetPositiveButton("OK", async(senderad, args) =>
{
KCApi.Properties.HaveLocationPermission = await RequestPermission(Plugin.Permissions.Abstractions.Permission.Location);
});
alertDialog.SetNegativeButton("Cancel", (senderad, args) =>
{
System.Diagnostics.Process.GetCurrentProcess().Kill();
});
alertDialog.Create().Show();
}
}
}
}