using System;

namespace NixWslWrapper.Core.Domain
{
    public class WslTarget
    {
        public string Distribution { get; }
        public string User { get; }
        public string NixProfilePath { get; }

        public WslTarget(string distribution, string user, string nixProfilePath = "/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh")
        {
            if (string.IsNullOrWhiteSpace(distribution))
                throw new ArgumentException("WSL Distribution name cannot be null or empty.", nameof(distribution));
            if (string.IsNullOrWhiteSpace(user))
                throw new ArgumentException("WSL User cannot be null or empty.", nameof(user));
            if (string.IsNullOrWhiteSpace(nixProfilePath))
                throw new ArgumentException("Nix Profile Path cannot be null or empty.", nameof(nixProfilePath));

            Distribution = distribution.Trim();
            User = user.Trim();
            NixProfilePath = nixProfilePath.Trim();
        }

        public override bool Equals(object? obj)
        {
            if (obj is not WslTarget other) return false;
            return string.Equals(Distribution, other.Distribution, StringComparison.OrdinalIgnoreCase) &&
                   string.Equals(User, other.User, StringComparison.OrdinalIgnoreCase) &&
                   string.Equals(NixProfilePath, other.NixProfilePath, StringComparison.Ordinal);
        }

        public override int GetHashCode()
        {
            return HashCode.Combine(
                Distribution.ToLowerOrdinal(),
                User.ToLowerOrdinal(),
                NixProfilePath
            );
        }

        public override string ToString()
        {
            return $"WSL Distro: {Distribution}, User: {User}, Profile: {NixProfilePath}";
        }
    }

    internal static class StringExtensions
    {
        public static string ToLowerOrdinal(this string str) => str.ToLowerInvariant();
    }
}