using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using IPClab1.Enums;
using IPClab1.Models;
using IPClab1.Services;

namespace IPClab1.ViewModels;

public partial class MainWindowViewModel(WindowListService windowListService, WindowInteractionService windowInteractionService) : ObservableObject
{
    private readonly WindowListService _windowListService = windowListService;
    private readonly WindowInteractionService _windowInteractionService = windowInteractionService;

    [ObservableProperty]
    public ObservableCollection<WindowInfo> _windows = [];

    [ObservableProperty]
    public partial bool VisibleOnly
    {
        get;
        set;
    }

    [RelayCommand]
    public async Task RefreshWindows()
    {
        Windows.Clear();
        foreach (WindowInfo windowInfo in await _windowListService.GetVisibleWindowsAsync(VisibleOnly))
            Windows.Add(windowInfo);
    }

    [ObservableProperty]
    [NotifyCanExecuteChangedFor(nameof(SetNewTitleCommand))]
    [NotifyCanExecuteChangedFor(nameof(SetWindowStateCommand))]
    [NotifyCanExecuteChangedFor(nameof(CloseWindowCommand))]
    [NotifyCanExecuteChangedFor(nameof(SendClickCommand))]
    public partial WindowInfo SelectedWindow
    {
        get;
        set;
    }

    partial void OnSelectedWindowChanged(WindowInfo value)
    {
        (Width, Height) = _windowInteractionService.GetWindowSize(value.Hwnd);
    }

    [ObservableProperty]
    public partial int Width
    {
        get;
        set;
    }

    [ObservableProperty]
    public partial int Height
    {
        get;
        set;
    }

    [ObservableProperty]
    public partial int X
    {
        get;
        set;
    }

    [ObservableProperty]
    public partial int Y
    {
        get;
        set;
    }

    [RelayCommand(CanExecute = nameof(IsWindowSelected))]
    public void SendClick()
    {
        _windowInteractionService.SimulateClick(SelectedWindow.Hwnd, X, Y);
    }

    [ObservableProperty]
    [NotifyCanExecuteChangedFor(nameof(SetNewTitleCommand))]
    public partial string NewTitle
    {
        get;
        set;
    }

    private bool CanSetNewTitle()
    {
        return !string.IsNullOrEmpty(NewTitle) && SelectedWindow != null;
    }

    [RelayCommand(CanExecute = nameof(CanSetNewTitle))]
    public void SetNewTitle()
    {
        _windowInteractionService.SetText(SelectedWindow.Hwnd, NewTitle);
        Windows[Windows.IndexOf(SelectedWindow)].WindowTitle = NewTitle;
    }

    private bool IsWindowSelected()
    {
        return SelectedWindow != null;
    }

    [RelayCommand(CanExecute = nameof(IsWindowSelected))]
    public void SetWindowState(WindowState windowState)
    {
        _windowInteractionService.SetWindowState(SelectedWindow.Hwnd, windowState);
    }

    [RelayCommand(CanExecute = nameof(IsWindowSelected))]
    public void CloseWindow()
    {
        _windowInteractionService.CloseWindow(SelectedWindow.Hwnd);
        SelectedWindow = null;
    }

    [ObservableProperty]
    public partial string InfoString
    {
        get;
        set;
    }

    public void RefreshInfo()
    {
        if (SelectedWindow != null) InfoString = _windowInteractionService.GetWindowDetails(SelectedWindow.Hwnd);
    }
}