using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using RblxTool.Interop;
using RblxTool.Services;

namespace RblxTool.Views;

public sealed partial class DashboardPage : Page
{
    private DispatcherTimer? _timer;

    public DashboardPage()
    {
        InitializeComponent();
        Loaded += OnLoaded;
        Unloaded += (_, _) => _timer?.Stop();
    }

    private void OnLoaded(object sender, RoutedEventArgs e)
    {
        VersionText.Text = $"rblxtool core {RblxEngine.Version()}";
        _timer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(1) };
        _timer.Tick += (_, _) => RefreshMetrics();
        _timer.Start();
        RefreshMetrics();
        _ = RefreshOverviewAsync();
    }

    private void RefreshMetrics()
    {
        var metrics = AppState.Current.Engine.Metrics();
        RequestsText.Text = metrics.Requests.ToString("N0");
        LatencyText.Text = $"{metrics.AverageLatencyMs:F0} ms";
        RetriesText.Text = metrics.Retries.ToString("N0");
        ThrottledText.Text = metrics.RateLimited.ToString("N0");
        BytesText.Text = FormatBytes(metrics.BytesIn);
    }

    private async Task RefreshOverviewAsync()
    {
        if (AppState.Current.Active is null)
        {
            return;
        }
        var overview = await Task.Run(() => AppState.Current.Engine.Overview());
        if (overview is null)
        {
            return;
        }
        RobuxText.Text = overview.Robux.ToString("N0");
        CollectiblesText.Text = overview.Collectibles.ToString("N0");
        RapText.Text = overview.TotalRap.ToString("N0");
        FriendsText.Text = overview.Friends.ToString("N0");
        FollowersText.Text = overview.Followers.ToString("N0");
    }

    private static string FormatBytes(ulong value)
    {
        double size = value;
        string[] units = { "B", "KB", "MB", "GB" };
        var index = 0;
        while (size >= 1024 && index < units.Length - 1)
        {
            size /= 1024;
            index++;
        }
        return $"{size:F1} {units[index]}";
    }
}