using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Threading.Tasks;
using Avalonia.Controls;

namespace CrossLangDevStudio.Models;

public class TemplatePackageManager : IPackageManager
{
    public string Filter => "template";

    private IEnumerable<string> GetFiles()
    {
        var path = Path.Combine(CrossLangShell.CrossLangConfigDirectory, "Templates");
        if (Directory.Exists(path))
            foreach (var dir in Directory.EnumerateDirectories(path))
            {
                var file = Path.Combine(dir, $"{Path.GetFileName(dir)}.crvm");
                if (File.Exists(file)) yield return file;
            }
    }

    public IEnumerable<CrossLangDependency> GetInstalledPackages()
    {
        foreach (var item in GetFiles())
        {
            var file = new CrossLangFile();
            try
            {
                file.Load(item);

            }
            catch (Exception)
            {
                continue;
            }
            yield return new CrossLangDependency { Name = file.Name, Version = file.Version };
        }

    }

    public async Task InstallPackageAsync(string name, CrossLangVersion version)
    {
        await CrossLangShell.RunCommandAsync(Environment.CurrentDirectory, "crosslang", ["install-template", name, $"--version={version.ToString()}"]);
        
    }

    public void UninstallPackage(string name)
    {
        foreach (var item in GetFiles())
        {
            var file = new CrossLangFile();
            try
            {
                file.Load(item);
                if (name == file.Name)
                {
                    File.Delete(item);
                    return;
                }
            }
            catch (Exception)
            {
                continue;
            }
        }
    }
}