// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
using Internal.Microsoft.DotNet.PlatformAbstractions;
 
namespace Internal.Microsoft.Extensions.DependencyModel
{
    internal struct Dependency
    {
        public Dependency(string name, string version)
        {
            if (string.IsNullOrEmpty(name))
            {
                throw new ArgumentException(nameof(name));
            }
            if (string.IsNullOrEmpty(version))
            {
                throw new ArgumentException(nameof(version));
            }
            Name = name;
            Version = version;
        }
 
        public string Name { get; }
        public string Version { get; }
 
        public bool Equals(Dependency other)
        {
            return string.Equals(Name, other.Name) && string.Equals(Version, other.Version);
        }
 
        public override bool Equals(object obj)
        {
            if (ReferenceEquals(null, obj)) return false;
            return obj is Dependency && Equals((Dependency) obj);
        }
 
        public override int GetHashCode()
        {
            var combiner = HashCodeCombiner.Start();
            combiner.Add(Name);
            combiner.Add(Version);
            return combiner.CombinedHash;
        }
    }
}