using System;
using System.Reactive;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using ReactiveUI;
using ReactiveUI.SourceGenerators;
using Refit;

namespace Flawless.Client.ViewModels;

public partial class ServerSetupViewModel : UserControlViewModelBase
{
    [Reactive] private string _host = "http://localhost:5256/";

    [Reactive] private string? _issue;

    private MainWindowViewModel _main;
    
    public ReactiveCommand<Unit, Unit> SetHostCommand { get; }

    
    private static readonly Regex httpRegex = new Regex(
        @"^(?i)https?://(([a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,6}|(\d{1,3}\.){3}\d{1,3})(:\d{1,5})?(/[\w\-\.~%!$&'()*+,;=:@/?#]*)?(?-i)$",
        RegexOptions.Compiled | RegexOptions.CultureInvariant);
    
    public ServerSetupViewModel(MainWindowViewModel main)
    {
        _main = main;
        Title = "Connect to a Flawless Server";
        
        // Must clear this gateway
        if (ApiHelper.IsGatewayReady) ApiHelper.ClearGateway();
        
        SetHostCommand = ReactiveCommand.CreateFromTask(
            FetchServerDataAsync, 
            this.WhenAnyValue(x => x.Host, s => !string.IsNullOrWhiteSpace(s)));
    }

    private async Task FetchServerDataAsync()
    {
        try
        {
            Issue = string.Empty;
            await ApiHelper.SetGatewayAsync(Host);
            _main.RedirectToLogin();
        }
        catch (ApiException ex)
        {
            await Console.Error.WriteLineAsync("Can not connect to server: " + ex.ToString());
            Issue = ex.Content;
        }
        catch (Exception ex)
        {
            await Console.Error.WriteLineAsync("Can not connect to server: " + ex.ToString());
            Issue = ex.Message;
        }
    }
    
}