using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Threading.Tasks;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using CommunityToolkit.Mvvm.Messaging;
using GazpromApp.Messages;
using GazpromApp.Models;

namespace GazpromApp.ViewModels;

public partial class PointViewModel : ViewModelBase
{
    private Point Point { get; }
    
    [ObservableProperty]
    private string? _name;

    [ObservableProperty]
    private string? _description;

    [ObservableProperty] 
    private DateTime _creationDate;

    [ObservableProperty] 
    private double? _latitude;

    [ObservableProperty] 
    private double? _longitude;

    [RelayCommand]
    private void AddEquipment()
    {
        Equipment.Add(new EquipmentViewModel(new Equipment()) {Name = "Новое оборудование", Description = "Описание оборудования", Parent = this});
        WeakReferenceMessenger.Default.Send(new EditPointMessage(this));
    }

    [RelayCommand]
    private void RemovePoint()
    {
        WeakReferenceMessenger.Default.Send(new RemovePointMessage(this));
    }

    private void RemoveEquipment(object sender, RemoveEquipmentMessage msg)
    {
        if (msg.Equipment.GetEquipment().Point == GetPoint())
            Equipment.Remove(msg.Equipment);
    }
    
    [ObservableProperty]
    private ObservableCollection<ImageViewModel> _images;
    [ObservableProperty]
    private ObservableCollection<EquipmentViewModel> _equipment;
    [ObservableProperty]
    private ObservableCollection<PropertyViewModel> _properties;

    public PointViewModel(Point point)
    {
        Point = point;
        Name = point.Name;
        CreationDate = point.CreationDate;
        Description = point.Description;
        Latitude = point.Latitude;
        Longitude = point.Longitude;
        Images = new ObservableCollection<ImageViewModel>(point.Images.Select(i => new ImageViewModel(i)));
        Equipment = new ObservableCollection<EquipmentViewModel>(point.Equipment.Select(i => new EquipmentViewModel(i){Parent = this}));
        Properties = new ObservableCollection<PropertyViewModel>(point.Properties.Select(i => new PropertyViewModel(i)));
        
        WeakReferenceMessenger.Default.Register<RemoveEquipmentMessage>(this, RemoveEquipment);
    }

    public Point GetPoint()
    {
        Point.Name = Name;
        Point.Description = Description;
        Point.CreationDate = CreationDate;
        Point.Equipment = Equipment.Select(e => e.GetEquipment()).ToList();
        Point.Images = Images.Select(i => i.GetImage()).ToList();
        Point.Properties = Properties.Select(p => p.GetProperty()).ToList();
        return Point;
    }
}