prs/prs.desktop/Components/Calendar/Appointments/AssignmentAppointment.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Media.Imaging;
using Comal.Classes;
using Geocoding;
using InABox.Core;
using InABox.WPF;

namespace PRSDesktop
{
    public class AssignmentAppointment : CalendarAppointment<Assignment>, INotifyPropertyChanged
    {
        public CalendarAssignmentType AssignmentType { get; }

        public override TimeSpan StartTime => AssignmentType switch
        {
            CalendarAssignmentType.Booked => Model.Booked.Start,
            CalendarAssignmentType.Actual => Model.Actual.Start,
            _ => Model.EffectiveStartTime()
        };

        public override TimeSpan EndTime => AssignmentType switch
        {
            CalendarAssignmentType.Booked => Model.Booked.Finish,
            CalendarAssignmentType.Actual => Model.Actual.Finish,
            _ => Model.EffectiveFinishTime()
        };

        public override DateTime Date => Model.Date;
        
        public AssignmentAppointment(Assignment model, Employee employee, CalendarAssignmentType type)
            : base(model, employee, x => x.ActivityLink.Color)
        {
            AssignmentType = type;
            
            Notes = Model.Description;
            
            var subject = new List<string>() { model.Number.ToString() };
            if (model.JobLink.ID != Guid.Empty)
                subject.Add(
                    model.ITP.ID != Guid.Empty
                        ? $"{model.JobLink.JobNumber}-{model.ITP.Code}"
                        : $"{model.JobLink.JobNumber}"
                );
            if (model.Task.ID  != Guid.Empty)
                subject.Add($"Task {model.Task.Number}");
            if (model.Meeting.Link.ID  != Guid.Empty)
                subject.Add($"Mtg {model.Meeting.Link.Number}");
            
            subject.Add(model.Title ?? "");
            Subject = string.Join(" ", subject);

            var images = new List<Bitmap>();
            if (!model.Completed.IsEmpty())
                images.Add(Resources.tick_sml.Resize(32,32));
            if (model.Delivery.ID != Guid.Empty)
                images.Add(Resources.box_sml.Resize(32,32));
            if (model.Meeting.Link.ID != Guid.Empty)
                images.Add(Resources.employees.Resize(32,32));
            Image = ImageUtils.MergeBitmaps(images, 10)?.AsBitmapImage();

            WeakEventManager<Assignment, PropertyChangedEventArgs>.AddHandler(model, nameof(Assignment.PropertyChanged), Assignment_Changed);
        }

        private static Column<Assignment>[] StartColumns = [
            new(x => x.Booked.Start),
            new(x => x.Actual.Start),
            ];
        private static Column<Assignment>[] FinishColumns = [
            new(x => x.Booked.Finish),
            new(x => x.Actual.Finish),
            ];

        private void Assignment_Changed(object? sender, PropertyChangedEventArgs e)
        {
            if(StartColumns.Any(x => x.Property == e.PropertyName))
            {
                OnPropertyChanged(nameof(StartTime));
            }
            else if(FinishColumns.Any(x => x.Property == e.PropertyName))
            {
                OnPropertyChanged(nameof(EndTime));
            }
            else if(e.PropertyName == nameof(Assignment.Date))
            {
                OnPropertyChanged(nameof(Date));
            }
        }

        public event PropertyChangedEventHandler? PropertyChanged;

        private void OnPropertyChanged([CallerMemberName] string? propertyName = null)
        {
            PropertyChanged?.Invoke(this, new(propertyName));
        }
    }
}