/// <summary>
/// Drops an appliance from the database and removes it from the displayed list in the UI
/// </summary>
/// <param name="appliance"></param>
private async void DropAppliance(Appliance appliance)
{
// Check if the appliance is used in any packaged solutions
using (var ctx = new AssistantContext())
{
var conflictingSolutions = ctx.PackagedSolutions.Include(a => a.ApplianceInstances)
.Where(s => s.ApplianceInstances.Any(a => a.Appliance.Id == appliance.Id))
.ToList();
if (conflictingSolutions.Count > 0)
{
var formattedSolutionString = string.Join("\n", conflictingSolutions.Select(x => $"- {x.Name}"));
await _dialogCoordinator.ShowMessageAsync(this, "Fejl",
$"Komponentet kan ikke slettes, da det findes i følgende pakkeløsninger:\n{formattedSolutionString}");
return;
}
}
// Remove from current solution
foreach (var existingAppliance in AppliancesInPackagedSolution.Where(a => a.Appliance == appliance))
{
AppliancesInPackagedSolution.Remove(existingAppliance);
}
// Remove from visual list of appliances
Appliances.Remove(appliance);
// Remove from database
using (var ctx = new AssistantContext())
{
ctx.Entry(appliance).State = EntityState.Deleted;
ctx.SaveChanges();
}
}
/// <summary>
/// Prompt the user to confirm action
/// Remove the current packaged solution from the view
/// Initialize new packaged solution
/// </summary>
private async void CreateNewPackagedSolution()
{
// Run message dialog and await response
var result = await _dialogCoordinator.ShowMessageAsync(this,
"Ny pakkeløsning",
"Hvis du opretter en ny pakkeløsning mister du arbejdet på din nuværende pakkeløsning. Vil du fortsætte?",
MessageDialogStyle.AffirmativeAndNegative,
new MetroDialogSettings()
{
NegativeButtonText = "Afbryd"
});
// If negative button was pressed => return
if (result == MessageDialogResult.Negative)
{
return;
}
// Clear the appliance list for the current packaged solution
AppliancesInPackagedSolution.Clear();
// Reset collections and results
PackagedSolution = new PackagedSolution();
EeiResultsRoomHeating = new EEICalculationResult();
EeiResultsWaterHeating = new EEICalculationResult();
// Update the EEI (=> 0)
UpdateEei();
}
/// <summary>
/// Adds an appliance to the viewed packaged solution
/// </summary>
/// <param name="appliance"></param>
private void AddApplianceToPackagedSolution(ApplianceInstance appliance)
{
AppliancesInPackagedSolution.Add(appliance);
// Set save state to false
IsDataSaved = false;
// Notify the print function of changes
PrintEnergyLabelCmd.NotifyCanExecuteChanged();
}
/// <summary>
/// Save the viewed packaged solution to the database
/// </summary>
private void SaveCurrentPackagedSolution()
{
/* IMPORTANT
* A packaged solution should not be saved if there exists
* a solar collector without a container tied to it. */
using (var ctx = new AssistantContext())
{
// Copy visible list of appliance instances to the list in the model
var newApplianceInstanceList = AppliancesInPackagedSolution.ToList();
// Mark packaged solution as added if new or modified if old
ctx.Entry(PackagedSolution).State = PackagedSolution.Id == 0 ? EntityState.Added : EntityState.Modified;
// Mark removed appliance instances as deleted
if (PackagedSolution.Id > 0)
{
var previousPackagedSolution = ctx.PackagedSolutions.Include(a => a.ApplianceInstances).FirstOrDefault(p => p.Id == PackagedSolution.Id);
previousPackagedSolution?.ApplianceInstances.ToList().ForEach(instance =>
{
if (newApplianceInstanceList.All(a => a.Id != instance.Id))
{
ctx.Entry(instance).State = EntityState.Deleted;
}
});
}
// Attach appliances and appliance instances to avoid duplicates
foreach (var appInstance in newApplianceInstanceList)
{
ctx.Entry(appInstance.Appliance.DataSheet).State = EntityState.Unchanged;
ctx.Entry(appInstance.Appliance).State = EntityState.Unchanged;
ctx.Entry(appInstance).State = appInstance.Id == 0 ? EntityState.Added : EntityState.Unchanged;
}
// Set new appliance instance list
PackagedSolution.ApplianceInstances = newApplianceInstanceList;
// Set the creation date to now
if (PackagedSolution.CreationDate == default(DateTime))
{
PackagedSolution.CreationDate = DateTime.Now;
}
// Save database changes
ctx.SaveChanges();
}
// Set save state to true and notify print function of change
IsDataSaved = true;
PrintEnergyLabelCmd.NotifyCanExecuteChanged();
}
public void LoadExistingPackagedSolution(int packagedSolutionId)
{
using (var ctx = new AssistantContext())
{
var existingPackagedSolution = ctx.PackagedSolutions.Where(p => p.Id == packagedSolutionId)
.Include(s => s.ApplianceInstances.Select(i => i.Appliance.DataSheet))
.FirstOrDefault();
if (existingPackagedSolution == null)
{
return;
}
// Copy appliances
foreach (var appliance in existingPackagedSolution.ApplianceInstances)
{
AppliancesInPackagedSolution.Add(appliance.MakeCopy());
}
}
}
private void UpdateEei()
{
PackagedSolution.ApplianceInstances = AppliancesInPackagedSolution.ToList();
PackagedSolution.EnergyLabel.Clear();
PackagedSolution.UpdateEei();
if (PackagedSolution.EnergyLabel != null && PackagedSolution.EnergyLabel.Count > 1)
{
EeiResultsRoomHeating = PackagedSolution.EnergyLabel[0];
EeiResultsWaterHeating = PackagedSolution.EnergyLabel[1];
}
else if (PackagedSolution.EnergyLabel != null && PackagedSolution.EnergyLabel.Count == 1)
{
EeiResultsRoomHeating = PackagedSolution.EnergyLabel?[0];
EeiResultsWaterHeating = null;
}
else
{
EeiResultsRoomHeating = null;
EeiResultsWaterHeating = null;
}
}