using System;
using System.Reflection;

namespace Xylem.Common.Utils.UserAccessCtrl
{
    public struct SoftwareVersion
    {
        private SoftwareVersion(Boolean initialize)
        {
            Name = "unknown";
            MajorV = 0;
            MinorV = 0;
            BuildV = 0;
            VersionString = "?";

            AssemblyName = Assembly
                .GetEntryAssembly()?
                .GetName();
            if (AssemblyName != null)
            {
                Name = AssemblyName.Name;

                var version = AssemblyName.Version;

                MajorV = version.Major;
                MinorV = version.Minor;
                BuildV = version.Build;
                VersionString = $"{MajorV}.{MinorV}.{BuildV}";
            }

        }

        public String Name { get; internal set; }

        public Int32 MajorV { get; internal set; }

        public Int32 MinorV { get; internal set; }

        public Int32 BuildV { get; internal set; }

        public String VersionString { get; }

        public AssemblyName AssemblyName { get; }

        public override String ToString()
            => $"{nameof(Version)}: {VersionString}";

        public static SoftwareVersion Current = new SoftwareVersion(true);

        public static implicit operator String(SoftwareVersion assemblyVersion)
            => assemblyVersion.ToString();
    }
}