using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Threading.Tasks;
using System.Web;
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;
using Newtonsoft.Json;

namespace CrossLangDevStudio.ViewModels;

public partial class InstallPackageDialogViewModel : ViewModelBase
{
    public InstallPackageMessage Message { get; }
    [ObservableProperty]
    private int _versionIndex = 0;
    public ObservableCollection<VersionObject> Versions { get; } = new ObservableCollection<VersionObject>();

    public InstallPackageDialogViewModel(InstallPackageMessage msg)
    {
        Message = msg;

        Task.Run(async () =>
        {
            var res = await Message.Client.GetStringAsync($"{msg.Server.TrimEnd('/')}/api/v1/versions?name={HttpUtility.UrlEncode(msg.Name)}");
            if (!string.IsNullOrWhiteSpace(res))
            {
                var res2 = JsonConvert.DeserializeObject<VersionsMessage>(res);
                if (res2 is not null && res2.Success)
                {
                    foreach (var res3 in res2.Versions)
                    {
                        Versions.Add(res3.ToObject());
                    }
                    VersionIndex = 0;
                }
            }
        });
    }
    [RelayCommand]
    private void Install()
    {
        if(VersionIndex < Versions.Count)
        WeakReferenceMessenger.Default.Send(new InstallPackageResponseMessage(Versions[VersionIndex].Version));
    }
    [RelayCommand]
    private void Cancel()
    {
        WeakReferenceMessenger.Default.Send(new InstallPackageResponseMessage(null));
    }
    public partial class VersionObject(CrossLangVersion version, DateTime date) : ObservableObject
    {
        public CrossLangVersion Version => version;
        [ObservableProperty]
        private string _text = $"{version} at {date.ToShortDateString()}";
    }

    public class VersionsMessage
    {
        [JsonProperty("success")]
        public bool Success { get; set; }
        [JsonProperty("versions")]
        public List<VersionMessage> Versions { get; set; } = new();

        public class VersionMessage
        {
            [JsonProperty("version")]
            public CrossLangVersion Version { get; set; }

            [JsonProperty("uploadTime")]
            public long UploadTime { get; set; } = 0;

            public VersionObject ToObject()
            {

                return new VersionObject(Version, DateTimeOffset.FromUnixTimeSeconds(UploadTime).LocalDateTime);
            }


        }
    }
}