public void Location_Click()
{
// Show window to change location
ChangeLocationWindow w = new ChangeLocationWindow(Location.Latitude, Location.Longitude);
w.Owner = Application.Current.MainWindow;
w.ShowDialog();
// If user clicked Ok button (and input was validated)...
if (w.OkClicked)
{
// Verify user input won't crash app by checking if given location has all SunPhase entries
var phases = SunCalcHelper.GetSunPhases(DateTime.Now, w.Latitude, w.Longitude);
const int EXPECTED_NUM_SUNPHASES = 14;
if (phases.Count() != EXPECTED_NUM_SUNPHASES)
{
// User input an invalid location. Notify user
MessageBox.Show($"There's a problem with\n{w.Latitude}\u00B0N, {w.Longitude}\u00B0E");
return;
}
// No problem with user input
// Persist location values in settings
Properties.Settings.Default.Latitude = w.Latitude;
Properties.Settings.Default.Longitude = w.Longitude;
Properties.Settings.Default.Save();
// Set Location property (which updates _scheduler)
Location = new Location(w.Latitude, w.Longitude);
}
}
// Constructor
public SunInfoWindowViewModel()
{
// Initialize properties
Date = DateTime.Now;
_lat = Properties.Settings.Default.Latitude;
_lng = Properties.Settings.Default.Longitude;
Phases = SunCalcHelper.GetSunPhases(Date, _lat, _lng);
AverageProgresses = CalculateAverageProgresses();
}
// Private methods
/// <summary>
/// Returns a Dictionary containing the average sun progress values for each SunPhase in the SunCalc library for the next year
/// </summary>
/// <returns></returns>
private Dictionary <string, double> CalculateAverageProgresses()
{
// Build a Dictionary that will contain progress totals for each SunPhase
Dictionary <string, double> progressTotals = new Dictionary <string, double>();
progressTotals.Add(SunCalcHelper.PHASE_NAME_SUNRISE, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_SUNRISE_END, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_GOLDEN_HOUR_END, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_SOLAR_NOON, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_GOLDEN_HOUR, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_SUNSET_START, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_SUNSET, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_DUSK, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NAUTICAL_DUSK, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NIGHT, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NADIR, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NIGHT_END, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NAUTICAL_DAWN, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_DAWN, 0);
// Build a List of DateTimes containing one DateTime per week for the next 52 weeks
List <DateTime> days = new List <DateTime>();
for (int week = 0; week < 52; week++)
{
days.Add(Date.AddDays(7 * week));
}
// Sum progresses for each Sunphase across all days
foreach (var day in days)
{
var phases = SunCalcHelper.GetSunPhases(day, _lat, _lng);
foreach (var phase in phases)
{
progressTotals[phase.Name.Value] += SunCalcHelper.GetSunProgress(phase.PhaseTime, _lat, _lng);
}
}
// Build a Dictionary of average progresses by dividing each entry in progressTotals by the number of elements in days
Dictionary <string, double> result = new Dictionary <string, double>();
foreach (KeyValuePair <string, double> entry in progressTotals)
{
double avg = progressTotals[entry.Key] / days.Count;
result.Add(entry.Key, avg);
}
return(result);
}