using System.Security.Cryptography;
using System.Text;
using Steamworks;

namespace PluginLoader.Tools;

public static class Tools
{
    public static readonly UTF8Encoding Utf8 = new();

    public static string Sha1HexDigest(string text)
    {
        using var sha1 = new SHA1Managed();
        var buffer = Utf8.GetBytes(text);
        var digest = sha1.ComputeHash(buffer);
        return BytesToHex(digest);
    }

    private static string BytesToHex(IReadOnlyCollection<byte> ba)
    {
        var hex = new StringBuilder(2 * ba.Count);

        foreach (var t in ba)
            hex.Append(t.ToString("x2"));

        return hex.ToString();
    }

    public static string FormatDateIso8601(DateTime dt)
    {
        return dt.ToString("s").Substring(0, 10);
    }

    public static ulong GetSteamId()
    {
        return SteamUser.GetSteamID().m_SteamID;
    }

    // FIXME: Replace this with the proper library call, I could not find one
    public static string FormatUriQueryString(Dictionary<string, string> parameters)
    {
        var query = new StringBuilder();
        foreach (var p in parameters)
        {
            if (query.Length > 0)
                query.Append('&');
            query.Append($"{Uri.EscapeDataString(p.Key)}={Uri.EscapeDataString(p.Value)}");
        }

        return query.ToString();
    }
}