using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Sockets;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using System.Text;

namespace Infrastructure.Extensions
{
    public static class HelperExtensions
    {
        public static string GetVersion(this Helper helper)
        {
            return Assembly.GetEntryAssembly().GetCustomAttribute<AssemblyInformationalVersionAttribute>().InformationalVersion;
        }

        public static string GetAssemblyVersion(this Helper helper)
        {
            return Assembly.GetEntryAssembly().GetName().Version?.ToString();
        }

        public static string GetMacAddress(this Helper helper)
        {
            return NetworkInterface
                .GetAllNetworkInterfaces()
                .Where(nic => (nic.NetworkInterfaceType == NetworkInterfaceType.Ethernet || nic.NetworkInterfaceType == NetworkInterfaceType.Wireless80211))
                .Where(nic => !nic.Description.Contains("Adapter", StringComparison.OrdinalIgnoreCase))
                .Where(nic => !nic.Description.Contains("Bluetooth", StringComparison.OrdinalIgnoreCase))
                .OrderBy(o => o.NetworkInterfaceType)
                .Select(o => o.GetPhysicalAddress().ToString().ToLower(CultureInfo.InvariantCulture))
                .FirstOrDefault();
        }

        public static string MacEncrypt(this Helper helper, string value)
        {
            using var des = new DESCryptoServiceProvider();
            var inputByteArray = Encoding.Default.GetBytes(value);
            using MD5 md5 = MD5.Create();
            byte[] hash = md5.ComputeHash(Encoding.UTF8.GetBytes(value));
            var md5Key = BitConverter.ToString(hash).Replace("-", string.Empty, StringComparison.Ordinal).ToLower(CultureInfo.InvariantCulture);
            des.Key = Encoding.ASCII.GetBytes(md5Key.Substring(0, 8));
            des.IV = Encoding.ASCII.GetBytes(md5Key.Substring(0, 8));
            using var ms = new MemoryStream();
            using var cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            var ret = new StringBuilder();
            foreach (var item in ms.ToArray())
            {
                ret.AppendFormat("{0:X2}", item);
            }
            return ret.ToString();
        }

        public static List<IPAddress> GetLocalIPList(this Helper helper)
        {
            var ipList = new List<IPAddress>();
            foreach (var ni in NetworkInterface.GetAllNetworkInterfaces())
            {
                foreach (var ua in ni.GetIPProperties().UnicastAddresses)
                {
                    if (ua.Address.AddressFamily == AddressFamily.InterNetwork)
                    {
                        ipList.Add(ua.Address);
                    }
                }
            }
            return ipList;
        }

        public static IPAddress GetLocalIP(this Helper helper)
        {
            var ipList = new List<IPAddress>();
            foreach (var ni in NetworkInterface.GetAllNetworkInterfaces())
            {
                foreach (var ua in ni.GetIPProperties().UnicastAddresses)
                {
                    if (ua.Address.AddressFamily == AddressFamily.InterNetwork)
                    {
                        ipList.Add(ua.Address);
                    }
                }
            }
            var ip = ipList.Where(o => !o.ToString().StartsWith("10.", StringComparison.Ordinal) &&
            o.ToString().StartsWith("172.", StringComparison.Ordinal) &&
            o.ToString().StartsWith("192.", StringComparison.Ordinal) &&
            o.ToString().StartsWith("127.", StringComparison.Ordinal)).FirstOrDefault()
            ?? ipList.FirstOrDefault(o => !o.ToString().StartsWith("192.168.", StringComparison.Ordinal))
            ?? ipList.FirstOrDefault(o => !o.ToString().StartsWith("192.", StringComparison.Ordinal))
            ?? ipList.FirstOrDefault();
            return ip;
        }

        public static string GetRunTime(this Helper helper)
        {
            var os = "";
            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
            {
                os += "windows";
            }
            else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
            {
                os += "linux";
            }
            else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
            {
                os += "osx";
            }
            os += $"-{RuntimeInformation.OSArchitecture.ToString().ToLower(CultureInfo.InvariantCulture)}";
            return os;
        }
    }
}