public DrivePageViewModel(IEventAggregator eventAggregator, INavigationService navigationService, IUserRepository userRepository,
IUserSettingsRepository userSettingsRepository, AppSettings settings) : base(navigationService)
{
this.eventAggregator = eventAggregator;
this.userRepository = userRepository;
this.userSettingsRepository = userSettingsRepository;
this.appSettings = settings;
CurrentValue = this.userRepository.GetCurrentUser().CurrentMeasure;
//The modified value adapted to string format (Hi & Lo)
GlucoseValue = HiLowValueHelper.NewMeasureToString(CurrentValue);
userSettings = this.userSettingsRepository.GetCurrentUserSettings();
MaximumGlucoseTreshold = userSettings.MaximumGlucoseTreshold;
MinimumGlucoseTreshold = userSettings.MinimumGlucoseTreshold;
eventAggregator.GetEvent <NotificationMeasureEvent>().Subscribe((notification) => {
this.ChangeCurrentValue(notification);
});
//Get value battery percentage and last value checked time at startup
UpdateBatteryAndLastValue();
//Get trend value at startup
UpdateTrendValue();
//Update value battery percentage and last value checked time from event
eventAggregator.GetEvent <DrivePageDataUpdateEvent>().Subscribe(() => {
UpdateBatteryAndLastValue();
UpdateTrendValue();
});
//Update value trend value
eventAggregator.GetEvent <TrendEvent>().Subscribe((trend) => {
UpdateTrendValue();
});
this.CallCommand = new DelegateCommand(async() =>
{
if (this.IsLowValue || this.IsHighValue || this.IsLow1Value || this.IsHigh2Value)
{
await Launcher.OpenAsync(new Uri(string.Format("tel:{0}", this.appSettings.EMERGENCY_NUMBER)));
}
});
}
/// <summary>
/// Spreads the last measure on the application (database, UI, alerts)
/// </summary>
/// <param name="lastMeasure"></param>
private void SpreadLastMeasure(float lastMeasure)
{
var currentUser = this.userRepository.GetCurrentUser();
var userSettings = this.userSettingsRepository.GetCurrentUserSettings();
long countExistingMesures = this.glucoseMeasureRepository.CountByUser(currentUser.Id);
bool isFirstReading = countExistingMesures == 0;
// 1 - Driving mode
// NOTE : We only handle MGDL Measure for the H&D MVP
this.userRepository.ChangeCurrentMeasure(currentUser, lastMeasure);
// 2 The notification channel
var notification = new NotificationMeasure();
notification.NotificationMessage = string.Format(Utils.GetTranslation("NotificationMessageCurrentMeasure"), HiLowValueHelper.NewMeasureToString(lastMeasure));
notification.NewMeasure = lastMeasure;
notification.MinimumGlucoseTreshold = userSettings.MinimumGlucoseTreshold;
notification.MaximumGlucoseTreshold = userSettings.MaximumGlucoseTreshold;
notification.IsAlert = userRepository.GetCurrentUser().IsAlert;
//Current Trend management //
GlucoseMeasure pastFifteenMinMeasure = glucoseMeasureRepository.GetPastFifteenMinutesMeasureByUser(currentUser.Id);
float? pastFifteenMinMeasureValue = null;
if (pastFifteenMinMeasure != null)
{
pastFifteenMinMeasureValue = pastFifteenMinMeasure.GlucoseLevelMGDL;
}
//Trend management : Builder //
switch (TrendHelper.ValuesToTypeTrend(lastMeasure, pastFifteenMinMeasureValue))
{
case MeasureTrend.IncreasingHeavy:
notification.MeasureTrend = MeasureTrend.IncreasingHeavy;
break;
case MeasureTrend.Increasing:
notification.MeasureTrend = MeasureTrend.Increasing;
break;
case MeasureTrend.Constant:
notification.MeasureTrend = MeasureTrend.Constant;
break;
case MeasureTrend.Decreasing:
notification.MeasureTrend = MeasureTrend.Decreasing;
break;
case MeasureTrend.DecreasingHeavy:
notification.MeasureTrend = MeasureTrend.DecreasingHeavy;
break;
default:
notification.MeasureTrend = MeasureTrend.None;
break;
}
//Trend management : Notifications //
//Save the measure trend in the user data
this.userRepository.UpdateMeasureTrend(currentUser, notification.MeasureTrend);
//Send the measure trend event to the drive page
this.eventAggregator.GetEvent <TrendEvent>().Publish(notification.MeasureTrend);
//Send the measure trend event to the notification
this.eventAggregator.GetEvent <NotificationMeasureEvent>().Publish(notification);
// 3 - Alerts raised to the user ?
if (userRepository.GetCurrentUser().IsAlert)
{
if (lastMeasure > userSettings.MaximumGlucoseTreshold || lastMeasure < userSettings.MinimumGlucoseTreshold)
{
notification.NotificationMessage = string.Format(Utils.GetTranslation("NotificationMessageAlertGlycemia"), HiLowValueHelper.NewMeasureToString(lastMeasure));
this.eventAggregator.GetEvent <PushNotificationAlertEvent>().Publish(notification);
}
}
this.precedingMeasure = lastMeasure;
}
/// <summary>
/// Update the current value
/// </summary>
/// <param name="notification"></param>
private void ChangeCurrentValue(NotificationMeasure notification)
{
CurrentValue = notification.NewMeasure;
GlucoseValue = HiLowValueHelper.NewMeasureToString(CurrentValue);
}