using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace MareSynchronos.Utils;

public static class VariousExtensions
{
    public static DateTime GetLinkerTime(Assembly assembly)
    {
        const string BuildVersionMetadataPrefix = "+build";

        var attribute = assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>();
        if (attribute?.InformationalVersion != null)
        {
            var value = attribute.InformationalVersion;
            var index = value.IndexOf(BuildVersionMetadataPrefix, StringComparison.Ordinal);
            if (index > 0)
            {
                value = value[(index + BuildVersionMetadataPrefix.Length)..];
                return DateTime.ParseExact(value, "yyyy-MM-ddTHH:mm:ss:fffZ", CultureInfo.InvariantCulture);
            }
        }

        return default;
    }
}