Fix crash if person hours doesn't fit into standard pattern

LeanderShiftPlannerV2/Service/TimesheetService.cs

@@ -28,9 +28,10 @@ public class TimesheetService
         foreach (Person person in persons)
         {
             List<int> pattern = GetPattern(person);
+            if (pattern.Count == 0) continue;
             List<DateTime> holidays = await GetHolidays();
             List<DateTime> weekends = GetWeekends();
-
+            
             int monthHours = person.Hours * 4;
             foreach (string month in Constants.Months)
             {
@@ -40,6 +41,7 @@ public class TimesheetService
                 int currentPersonHours = 0;
                 int currentPatternIndex = 0;
                 int dayOfMonth = 1;
+                int lastDayOfMonth = new DateTime(DateTime.Now.Year, Constants.Months.IndexOf(month), dayOfMonth).AddMonths(1).AddDays(-1).Day;
                 while (currentPersonHours != monthHours)
                 {
                     DateTime currentDay = new DateTime(DateTime.Now.Year, Constants.Months.IndexOf(month), dayOfMonth);
@@ -75,9 +77,18 @@ public class TimesheetService
                             currentPersonHours += 2;
                             break;
                         }
+                        case 1:
+                        {
+                            DateTime dayStart = new DateTime(currentDay.Year, currentDay.Month, currentDay.Day, 9, 0, 0);
+                            DateTime dayEnd = new DateTime(currentDay.Year, currentDay.Month, currentDay.Day, 10, 0, 0);
+                            timesheetValue.Add((dayStart, dayEnd, false));
+                            currentPersonHours += 1;
+                            break;
+                        }
                     }
                     
                     dayOfMonth++;
+                    if (dayOfMonth > lastDayOfMonth) throw new Exception("Too many hours!");
                     currentPatternIndex = (currentPatternIndex + 1) % pattern.Count;
                 }
 
@@ -158,10 +169,14 @@ public class TimesheetService
                 pattern.Add(2);
                 hours += 2;
             }
+            else if (hours + 1 <= person.Hours)
+            {
+                pattern.Add(1);
+                hours += 1;
+            }
             else if (hours + 2 > person.Hours)
             {
-                // Error! Could not find pattern!
-                return null;
+                return new List<int>();
             }
         }
 

LeanderShiftPlannerV2/Service/ViewService.cs

@@ -82,5 +82,12 @@ namespace LeanderShiftPlannerV2.Service
             areYouSure.Show(sender);
             return areYouSure;
         }
+
+        public static GeneralError ShowGeneralError(Window sender)
+        {
+            GeneralError generalError = new GeneralError();
+            generalError.Show(sender);
+            return generalError;
+        }
     }
 }

LeanderShiftPlannerV2/View/ErrorView/GeneralError.axaml

@@ -0,0 +1,12 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        x:Class="LeanderShiftPlannerV2.View.ErrorView.GeneralError"
+        Title="GeneralError" Height="100" Width="300" CanResize="False" WindowStartupLocation="CenterOwner">
+    <Grid>
+        <TextBlock x:Name="TextBlockErrorText" Text="Here should be your exception code" Height="32" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="0, 0, 0, 15"/>
+        <Button x:Name="ButtonAccept" Content="Accept" Height="32" Width="100" HorizontalAlignment="Right" VerticalAlignment="Bottom" HorizontalContentAlignment="Center" Margin="0, 0, 0, 10" Click="ButtonAccept_OnClick"/>
+    </Grid>
+</Window>

LeanderShiftPlannerV2/View/ErrorView/GeneralError.axaml.cs

@@ -0,0 +1,24 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+
+namespace LeanderShiftPlannerV2.View.ErrorView;
+
+public partial class GeneralError : Window
+{
+    public GeneralError()
+    {
+        InitializeComponent();
+    }
+
+    public string ErrorText
+    {
+        set => TextBlockErrorText.Text = value;
+    }
+    
+    private void ButtonAccept_OnClick(object? sender, RoutedEventArgs e)
+    {
+        this.Close();
+    }
+}

LeanderShiftPlannerV2/View/LeanderShiftPlannerView/LeanderShiftPlannerMainWindow.axaml.cs

@@ -136,7 +136,7 @@ public partial class LeanderShiftPlannerMainWindow : Window
         }
         catch (Exception exception)
         {
-            throw; // TODO handle exception
+            ViewService.ShowGeneralError(this).ErrorText = exception.Message;
         }
     }