using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Versioning;
using System.Text;
using System.Threading.Tasks;

namespace Tango.Core.Helpers
{
    /// <summary>
    /// Contains several assembly related helper methods.
    /// </summary>
    public static class AssemblyHelper
    {
        /// <summary>
        /// Gets the current assembly folder path.
        /// </summary>
        /// <returns></returns>
        public static String GetCurrentAssemblyFolder()
        {
            string codeBase = Assembly.GetCallingAssembly().CodeBase;
            UriBuilder uri = new UriBuilder(codeBase);
            string path = Uri.UnescapeDataString(uri.Path);
            return Path.GetDirectoryName(path);
        }

        /// <summary>
        /// Gets the current assembly build date.
        /// </summary>
        /// <returns></returns>
        public static DateTime GetCurrentAssemblyBuildDate()
        {
            return Assembly.GetCallingAssembly().GetBuildDate();
        }

        /// <summary>
        /// Gets the current assembly version.
        /// </summary>
        /// <returns></returns>
        public static Version GetCurrentAssemblyVersion()
        {
            return Assembly.GetCallingAssembly().GetName().Version;
        }

        /// <summary>
        /// Gets the assembly version.
        /// </summary>
        /// <param name="assembly">The assembly.</param>
        /// <returns></returns>
        private static Version GetAssemblyVersion(Assembly assembly)
        {
            return assembly.GetName().Version;
        }

        public static Version GetTargetFrameworkVersion(Assembly assembly)
        {
            object[] list = Assembly.GetExecutingAssembly().GetCustomAttributes(true);
            var attribute = list.OfType<TargetFrameworkAttribute>().First();

            return Version.Parse(attribute.FrameworkName.Replace(".NETFramework,Version=v", ""));
        }

        public static String GetAssemblyTargetFrameworkFolder(Assembly assembly)
        {
            String dotNetVersion = AssemblyHelper.GetTargetFrameworkVersion(Assembly.GetExecutingAssembly()).ToString();
            String dotNetPath = $@"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v{dotNetVersion}";
            return dotNetPath;
        }
    }
}