using System.Reflection;

namespace NozCli;

public static class VersionInfo
{
    private static readonly string _informational =
        typeof(VersionInfo).Assembly
            .GetCustomAttribute<AssemblyInformationalVersionAttribute>()
            ?.InformationalVersion ?? "0.0.0";

    // "0.1.0+abc1234" → "0.1.0"
    public static string Version =>
        _informational.Contains('+')
            ? _informational[.._informational.IndexOf('+')]
            : _informational;

    // "0.1.0+abc1234" → "abc1234", or "" if no hash
    public static string GitHash =>
        _informational.Contains('+')
            ? _informational[(_informational.IndexOf('+') + 1)..]
            : "";

    public static string Full =>
        GitHash.Length > 0 ? $"{Version} ({GitHash})" : Version;
}