DaSaSo/DaSaSo.ViewModel/Window/MainWindowViewModel.cs

using DaSaSo.Domain.Enums;
using DaSaSo.Domain.Model;
using DaSaSo.EntityFramework;
using DaSaSo.EntityFramework.Services;
using DaSaSo.ViewModel.Commands;
using DaSaSo.ViewModel.Enums;
using DaSaSo.ViewModel.Interface;
using DaSaSo.ViewModel.State.Navigation;
using Microsoft.Toolkit.Mvvm.Input;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;

namespace DaSaSo.ViewModel
{
    public sealed class MainWindowViewModel : BaseViewModel
    {
        private readonly IViewModelAbstractFactory viewModelFactory;
        private readonly IActualProject _actualProject;
        private string _clientname = "";
        private string _projektname = "";
        private string _buildingsitename = "";
        public bool CanSelectProject { get => _actualProject.AktuellClient != null; }
        public bool CanSelectBuildingSite { get => _actualProject.AktuellProjekt != null; }
        public bool CanSelectSewerObjects { get => _actualProject.AktuellBaustelle != null; }

        public IMainWindowNavigator _navigator { get; set; }
        public ICommand UpdateCurrentViewModelCommand { get;  }
        public BaseViewModel CurrentViewModel => _navigator.CurrentViewModel;
        
        public string ClientName
        {
            get => _clientname;
            set
            {
                if(_clientname != value)
                {
                    _clientname = value;
                    OnPropertyChanged();
                }
            }
        }

        public string Projektname
        {
            get => _projektname;
            set
            {
                if (_projektname != value)
                {
                    _projektname = value;
                    OnPropertyChanged();
                }
            }
        }
        public string Buildingsitename
        {
            get => _buildingsitename;
            set
            {
                if (_buildingsitename != value)
                {
                    _buildingsitename = value;
                    OnPropertyChanged();
                }
            }
        }

        public MainWindowViewModel(IMainWindowNavigator navigator,IViewModelAbstractFactory viewModelFactory, IActualProject actualProject)
        {
            this._navigator = navigator;
            this.viewModelFactory = viewModelFactory;

            _navigator.StateChanged += _navigator_StateChanged;

            UpdateCurrentViewModelCommand = new UpdateCurrentViewModelCommand(navigator, viewModelFactory);
            UpdateCurrentViewModelCommand.Execute(EMainWindowViewType.Home);
            _actualProject = actualProject;
            _actualProject.ClientChanged += _actualProject_ClientChanged;
            _actualProject.ProjectChanged += _actualProject_ProjectChanged;
            _actualProject.BuildingSiteChanged += _actualProject_BuildingSiteChanged;
            _actualProject.SewerObjectChanged += _actualProject_SewerObjectChanged;
        }

        private void _actualProject_SewerObjectChanged(object? sender, EventArgs e)
        {
            UpdateCurrentViewModelCommand.Execute(EMainWindowViewType.SewerMainMenu);
        }

        private void _navigator_StateChanged()
        {
            OnPropertyChanged(nameof(CurrentViewModel));
        }

        private void _actualProject_BuildingSiteChanged(object? sender, EventArgs e)
        {
            Buildingsitename = _actualProject.AktuellBaustelle.BuildingSiteNumber;
            OnPropertyChanged(nameof(CanSelectSewerObjects));
            UpdateCurrentViewModelCommand.Execute(EMainWindowViewType.SewerObjects);
        }

        private void _actualProject_ProjectChanged(object? sender, EventArgs e)
        {
            Projektname = _actualProject.AktuellProjekt.Name;
            OnPropertyChanged(nameof(CanSelectBuildingSite));
            UpdateCurrentViewModelCommand.Execute(EMainWindowViewType.Buildingsites);
        }

        private void _actualProject_ClientChanged(object? sender, EventArgs e)
        {
            ClientName = _actualProject.AktuellClient.Firstname;
            OnPropertyChanged(nameof(CanSelectProject));
            UpdateCurrentViewModelCommand.Execute(EMainWindowViewType.Projects);
        }
    }
}