GazpromApp/ViewModels/Basic/EquipmentViewModel.cs

using System;
using System.Collections.ObjectModel;
using System.Linq;
using CommunityToolkit.Mvvm.ComponentModel;
using GazpromApp.Models;
using GazpromApp.Utils;

namespace GazpromApp.ViewModels;

public partial class EquipmentViewModel : ViewModelBase
{
    private Equipment Equipment { get; }

    [ObservableProperty]
    private string? _name;
    
    [ObservableProperty]
    private string? _description;

    public ObservableCollection<ImageViewModel> Images { get; init; } = [];
    
    public ObservableCollection<PropertyViewModel> Properties { get; }

    public ObservableCollection<InspectionViewModel> Inspections { get; }
    
    [ObservableProperty]
    private string _nearestInspection;

    public EquipmentViewModel()
    {
        Name = string.Empty;
        Description = string.Empty;
        Properties = [];
        Inspections = [];
        NearestInspection = "Нету инспекций";
        Equipment = new Equipment();
    }

    public EquipmentViewModel(Equipment equipment)
    {
        Name = equipment.Name;
        Description = equipment.Description;
        Images = new ObservableCollection<ImageViewModel>(equipment.Images.Select(i => new ImageViewModel(i)));
        Properties = new ObservableCollection<PropertyViewModel>(equipment.Properties.Select(e => new PropertyViewModel(e)));
        
        var times = equipment.Inspections.Select(e => new InspectionViewModel(e))
            .Select(e => e.GetNearestDates())
            .ToList();
        
        Inspections = new ObservableCollection<InspectionViewModel>(equipment.Inspections
            .Select((e, i) => new InspectionViewModel(e) { InspectionDate = times[i][0] }));
        
        NearestInspection = times
            .Where(e => e[1] > DateTime.Now)
            .Select(e => e[1])
            .OrderBy(e => e)
            .FirstOrDefault()
            .ToLongDateString();

        if (Inspections.Count == 0) NearestInspection = "Нету инспекций";
        Equipment = equipment;
    }

    public Equipment GetEquipment()
    {
        Equipment.Name = Name;
        Equipment.Description = Description;
        Equipment.Images = Images.Select(e => e.GetImage()).ToList();
        Equipment.Inspections = Inspections.Select(e => e.GetInspection()).ToList();
        return Equipment;
    }
}