/*
 
Copyright (c) 2017 Ahmed Kh. Zamil

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


*/
using System;
using System.IO;
using System.Collections;
using System.Xml;
using System.Security.Cryptography;
using System.Text;
using System.Reflection;
using Esiur.Data;
using System.Collections.Generic;
//using Esiur.Net.Packets;
using System.Text.RegularExpressions;
using System.Net.NetworkInformation;
using System.Linq;
using Esiur.Core;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text.Json;
using Esiur.Resource;
using System.Text.Json.Serialization;

namespace Esiur.Misc;
public static class Global
{
    private static KeyList<string, object> variables = new KeyList<string, object>();
    // private static Hashtable m_Cached = new Hashtable();
    //internal static bool SystemIsWorking = false;

    private static Random rand = new Random(System.Environment.TickCount);

    //public static Encoding DefaultEncoding =  Encoding.GetEncoding(1252);// .GetEncoding("windows-1252");

    public static KeyList<string, long> Counters = new KeyList<string, long>();

    public delegate void LogEvent(string service, LogType type, string message);

    public static event LogEvent SystemLog;


    public static string ToJson(this IResource resource)
    {
        try
        {
            return JsonSerializer.Serialize(resource, Global.SerializeOptions);
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.ToString());
            return "{}";
        }
    }

    public static JsonSerializerOptions SerializeOptions = new JsonSerializerOptions
    {
        ReferenceHandler = ReferenceHandler.Preserve,
        WriteIndented = true,
        Converters =
            {
                new ResourceJsonConverter(),
                new DoubleJsonConverter()
            }
    };



    public static string Version { get; } = FileVersionInfo.GetVersionInfo(Assembly.GetExecutingAssembly().Location).FileVersion;

    //FileVersionInfo fvi = FileVersionInfo.GetVersionInfo(assembly.Location);
    //      string version = fvi.FileVersion;


    /*
    public static char GetDirectorySeparator()
    {
        return System.IO.Path.DirectorySeparatorChar;
    }
    */

    public static void Log(Exception ex, params object[] arguments)
    {
        try
        {


            var stack = new StackTrace(ex, true);
            var frame = stack.GetFrames().First();
            var method = frame.GetMethod();
            var parameters = method.GetParameters();
            var service = method.DeclaringType.Name;
            var message = "";

            if (arguments.Length > 0 && parameters.Length > 0)
            {
                message = "Arguments ( ";

                for (int i = 0; i < parameters.Length && i < arguments.Length; i++)
                {
                    message += parameters[i].Name + ": " + arguments[i].ToString() + " ";
                }

                message += ")" + Environment.NewLine + "------------------------------------------------";
            }

            message += ex.ToString();

            Log(service, LogType.Error, message);



            Log(service, LogType.Error, ex.ToString());

        }
        catch
        {

        }
    }

    public static void Log(string service, LogType type, string message, bool appendHeader = true)
    {
        //if (type != LogType.Debug)
        Console.WriteLine(service + " " + message);

        SystemLog?.Invoke(service, type, message);
    }

    /*
    public static string GetTempPath()
    {
        return System.IO.Path.GetTempPath();
    }
    */

    public static string RemoveControlCharacters(string inString)
    {
        if (inString == null) return null;

        StringBuilder newString = new StringBuilder();
        char ch;

        for (int i = 0; i < inString.Length; i++)
        {

            ch = inString[i];

            if (!char.IsControl(ch))
            {
                newString.Append(ch);
            }
        }
        return newString.ToString();
    }

    public static void PrintCounters()
    {
        string[] keys = new string[Counters.Keys.Count];
        Counters.Keys.CopyTo(keys, 0);

        foreach (string k in keys)
        {
            Console.WriteLine(k + ":" + Counters[k]);
        }
    }
    //        Encoding ANSI = Encoding.GetEncoding(1252);

    /*
public static Hashtable Cached
{
    get
    {
        return m_Cached;
    }
}*/

    /*
    public static string ByteArrayToMAC(byte[] array)
    {
        string rt="";

        if (array == null)
            return "00:00:00:00:00:00";
        else
        {
            //for (int i = 0; i < array.Length - 1; i++)
            //    rt += Convert.ToString(array[i], 16) + ":";

            //rt += Convert.ToString(array[array.Length - 1], 16);

            rt = BitConverter.ToString(array);
            rt = rt.Replace('-', ':');
            return rt;
        }

    }
    */



    /*
    public static string IPAddressFromInt32(UInt32 IP)
    {
        //var dIP = DC.ToBytes(IP);

        return (IP >> 24) + "." + ((IP >> 16) & 0xFF) + "." + ((IP >> 8) & 0xFF) + "." + (IP & 0xFF);
    }
    */

    public static KeyList<string, object> Variables
    {
        get
        {
            return variables;
        }
    }


    public static uint CurrentUnixTime()
    {
        return (uint)(DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds;
    }

    public static void SetConsoleColors(ConsoleColor ForegroundColor, ConsoleColor BackgroundColor)
    {
        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
        {
            switch (ForegroundColor)
            {
                case ConsoleColor.Black:
                    Console.Write("\u001B[30m");
                    break;
                case ConsoleColor.Blue:
                    Console.Write("\u001B[1;34m");
                    break;
                case ConsoleColor.Cyan:
                    Console.Write("\u001B[1;36m");
                    break;
                case ConsoleColor.Gray:
                case ConsoleColor.DarkGray:
                    Console.Write("\u001B[1;30m");
                    break;
                case ConsoleColor.Green:
                    Console.Write("\u001B[1;32m");
                    break;
                case ConsoleColor.Magenta:
                    Console.Write("\u001B[1;35m");
                    break;
                case ConsoleColor.Red:
                    Console.Write("\u001B[1;31m");
                    break;
                case ConsoleColor.White:
                    Console.Write("\u001B[1;37m");
                    break;
                case ConsoleColor.Yellow:
                    Console.Write("\u001B[1;33m");
                    break;

                case ConsoleColor.DarkBlue:
                    Console.Write("\u001B[34m");
                    break;
                case ConsoleColor.DarkCyan:
                    Console.Write("\u001B[36m");
                    break;
                case ConsoleColor.DarkGreen:
                    Console.Write("\u001B[32m");
                    break;
                case ConsoleColor.DarkMagenta:
                    Console.Write("\u001B[35m");
                    break;
                case ConsoleColor.DarkRed:
                    Console.Write("\u001B[31m");
                    break;
                case ConsoleColor.DarkYellow:
                    Console.Write("\u001B[33m");
                    break;
            }


            switch (BackgroundColor)
            {
                case ConsoleColor.Black:
                    Console.Write("\u001B[40m");
                    break;
                case ConsoleColor.Blue:
                    Console.Write("\u001B[1;44m");
                    break;
                case ConsoleColor.Cyan:
                    Console.Write("\u001B[1;46m");
                    break;
                case ConsoleColor.Gray:
                case ConsoleColor.DarkGray:
                    Console.Write("\u001B[1;40m");
                    break;
                case ConsoleColor.Green:
                    Console.Write("\u001B[1;42m");
                    break;
                case ConsoleColor.Magenta:
                    Console.Write("\u001B[1;45m");
                    break;
                case ConsoleColor.Red:
                    Console.Write("\u001B[1;41m");
                    break;
                case ConsoleColor.White:
                    Console.Write("\u001B[1;47m");
                    break;
                case ConsoleColor.Yellow:
                    Console.Write("\u001B[1;43m");
                    break;

                case ConsoleColor.DarkBlue:
                    Console.Write("\u001B[44m");
                    break;
                case ConsoleColor.DarkCyan:
                    Console.Write("\u001B[46m");
                    break;
                case ConsoleColor.DarkGreen:
                    Console.Write("\u001B[42m");
                    break;
                case ConsoleColor.DarkMagenta:
                    Console.Write("\u001B[45m");
                    break;
                case ConsoleColor.DarkRed:
                    Console.Write("\u001B[41m");
                    break;
                case ConsoleColor.DarkYellow:
                    Console.Write("\u001B[43m");
                    break;
            }
        }
        else
        {
            Console.ForegroundColor = ForegroundColor;
            Console.BackgroundColor = BackgroundColor;
        }
    }

    public static string GetUserPart(string strAddress)
    {
        return strAddress.Substring(0, strAddress.IndexOf("@", 0));
    }

    public static byte[][] GetBytesFromChunk(byte[] Data, int ChunkSize)
    {
        if (ChunkSize == 1)
        {
            byte[][] ar = new byte[0][];
            int ptr = 0;
            while (ptr < Data.Length)
            {
                Array.Resize<byte[]>(ref ar, ar.Length + 1);
                ar[ar.Length - 1] = new byte[Data[ptr]];
                Buffer.BlockCopy(Data, ++ptr, ar[ar.Length - 1], 0, Data[ptr]);
                ptr += Data[ptr] + 1;
            }
            return ar;
        }
        return null;
    }





    public static string GetFileTitle(string Filename)
    {
        string[] s = Filename.Split(Path.DirectorySeparatorChar);
        return s[s.Length - 1];
    }

    public static string GetNewFileName(string FileDir)
    {
        string tempGetNewFileName = null;
        short i = 0;
        string NewFile = null;
        NewFile = FileDir;
    Begin:
        FileInfo FF = new FileInfo(NewFile);
        if (FF.Exists)
        {
            //If FSO.FileExists(NewFile) Then
            i++; //= i + 1;
            NewFile = FileDir.Substring(0, FileDir.Length - 4) + "_" + i + "." + FileDir.Substring(FileDir.Length - 3);
            goto Begin;
        }
        else
        {
            tempGetNewFileName = NewFile;
        }
        return tempGetNewFileName;
    }

    /////////////////////////////////////
    public static string TrimEx(string strIn)
    {
        return strIn.Replace("\r", "").Replace("\n", "");
    }

    /*
    public static bool IsUnix()
    {
        // Linux OSs under Mono 1.2 uses unknown integer numbers so this should identify all non windows as unix
        return (Environment.OSVersion.Platform != PlatformID.Win32NT
            && Environment.OSVersion.Platform != PlatformID.Win32Windows); // || Environment.OSVersion.Platform == PlatformID.Linux; 
    }
    */

    public static string GenerateCode()
    {
        return GenerateCode(16);
    }



    public static byte[] GenerateBytes(int length)
    {
        var b = new byte[length];
        rand.NextBytes(b);
        return b;
    }

    public static string GenerateCode(int length)
    {
        return GenerateCode(length, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");// ~!@#$%^&*()_-+=\\?/");
    }

    public static string GenerateCode(int length, string chars)
    //public static string GenerateCode(int Length)
    {
        //var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_-+=\\?/";
        var result = new string(
            Enumerable.Repeat(chars, length)
                      .Select(s => s[rand.Next(s.Length)])
                      .ToArray());
        //if (result.Length < length)
        //  Console.WriteLine();
        return result;
        /*
        int len = 0;
        string code = "";

        while(len < Length)
        {
            var c = Convert.ToChar((byte)(rand.NextDouble() * 255));
            if (Char.IsLetterOrDigit(c))
            {
                code += c;
                len++;
            }
        }

        return code;
        */
    }

    public static string ReplaceOnce(string Expression, string Find, string Replacement)
    {
        int pos = Expression.IndexOf(Find);
        if (pos != -1)
            return Expression.Substring(0, pos) + Replacement + Expression.Substring(pos + Find.Length);
        else
            return Expression;
    }



    public static Regex GetRouteRegex(string url)
    {
        var sc = Regex.Match(url, @"([^\{]*)\{([^\}]*)\}([^\{]*)");

        List<VarInfo> vars = new List<VarInfo>();

        while (sc.Success)
        {
            vars.Add(new VarInfo()
            {
                Pre = sc.Groups[1].Value,
                VarName = sc.Groups[2].Value,
                Post = sc.Groups[3].Value
            });
            sc = sc.NextMatch();
        }

        if (vars.Count > 0)
        {
            return new Regex("^" + String.Join("", vars.Select(x => x.Build()).ToArray()) + "$");
        }
        else
        {
            return new Regex("^" + Regex.Escape(url) + "$");
        }
    }

    //public void Replace(string Expression, string Find, string Replacement, int Start, int Count)
    //{
    //    Expression.IndexOf(
    //}
}