using System;
using System.Collections.ObjectModel;
using System.IO;
using Avalonia.Markup.Xaml.Templates;
using Avalonia.Media;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using CommunityToolkit.Mvvm.Messaging;
using CrossLangDevStudio.Messages;
using CrossLangDevStudio.Views;

namespace CrossLangDevStudio.ViewModels;

public partial class NewProjectDialogViewModel : ViewModelBase
{
    public ObservableCollection<CrossLangTemplate> CrossLangTemplates { get; set; } = new ObservableCollection<CrossLangTemplate>();
    bool updated = false;
    string _name = "";
    public string Name
    {
        get
        {
            return _name;
        }
        set
        {
            updated = true;
            SetProperty(ref _name, value, nameof(Name));
        }
    }

    private void SelectProjectType(string name)
    {


        if (!updated)
        {
            var newName = name.Replace(" ", "");
            int i;
            for (i = 1; i < int.MaxValue; i++)
            {
                string name2 = $"{name}{i}";
                if (!Directory.Exists(Path.Combine(ParentDirectory, name2)))
                {
                    Name = name2;
                    updated = false;
                    break;
                }
            }
        }
    }

    [ObservableProperty]
    private string _parentDirectory = CrossLangShell.Settings.ProjectDirectory;
    CrossLangTemplate? _template = null;
    public CrossLangTemplate? SelectedTemplate
    {
        get
        {
            return _template;
        }
        set
        {
            SetProperty(ref _template, value, nameof(SelectedTemplate));
            if (value is not null)
            {
                SelectProjectType(value.Name);
            }
        }
    }

    public NewProjectDialogViewModel()
    {
        foreach (var item in Directory.EnumerateFiles(Path.Combine(CrossLangShell.CrossLangConfigDirectory, "Templates"), "*.crvm"))
        {
            CrossLangFile file = new CrossLangFile();
            try
            {
                file.Load(item);
                CrossLangTemplates.Add(new CrossLangTemplate(Path.GetFileNameWithoutExtension(item), file));
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
        }
    }

    [RelayCommand]
    private void OK()
    {
        if (_template is not null && !string.IsNullOrWhiteSpace(Name) && !string.IsNullOrWhiteSpace(ParentDirectory))
        {
            var path = Path.Combine(ParentDirectory, Name);
            Directory.CreateDirectory(path);
            if (CrossLangShell.CreateProject(_template.TemplateName, path))
            {
                WeakReferenceMessenger.Default.Send(new NewProjectCloseMessage(path));
            }

        }
    }
    [RelayCommand]
    private void Cancel()
    {
        WeakReferenceMessenger.Default.Send(new NewProjectCloseMessage(null));
    }
}

public partial class CrossLangTemplate(string name,CrossLangFile file) : ObservableObject
{

    [ObservableProperty]
    private string _name = file.GetTemplatePrettyName();
    [ObservableProperty]
    private IImage _icon = file.GetIcon(64);

    public string TemplateName = name;

}