using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace Rdh.SocketServer.Client
{
    public sealed class DebugHelper
    {
        private static List<String> _distinctBuffer;
        private static Int32 _maxDistinctBufferLength;
        static DebugHelper()
        {
            if (Debugger.IsAttached)
            {
                _maxDistinctBufferLength = 5;
                _distinctBuffer = new List<string>();
            }
        }
        public static void Log(String message, [CallerMemberName] String memmber = null)
        {
            Debug.WriteLine(String.Format("{0} T:{1} {3} Log:{2}",
                DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"),
                Thread.CurrentThread.ManagedThreadId.ToString(),
                message,
                memmber));
        }
        /// <summary>
        /// 使用去重缓存来记录日志，避免重复内容的记录
        /// </summary>
        /// <param name="message"></param>
        /// <param name="distinctDepth">去重深度，最大值为5，默认值为1</param>
        public static void LogDistinctly(String message, Int32 distinctDepth = 1)
        {
            if (Debugger.IsAttached)
            {
                if (_distinctBuffer.Count > 0)
                {
                    if (distinctDepth > _distinctBuffer.Count)
                    {
                        distinctDepth = _distinctBuffer.Count;
                    }
                    for (Int32 i = 0; i < distinctDepth; i++)
                    {
                        if (_distinctBuffer[i] == message)
                        {
                            return;
                        }
                    }
                }
                Log(message);
                if (_distinctBuffer.Count >= _maxDistinctBufferLength)
                {
                    _distinctBuffer.RemoveAt(_maxDistinctBufferLength - 1);
                }
                _distinctBuffer.Insert(0, message);
            }
        }
        public static void Log(Func<String> messageBuilder)
        {
            if (Debugger.IsAttached)
            {
                if (messageBuilder != null)
                {
                    String message = messageBuilder();
                    if (message != null)
                    {
                        Log(message);
                    }
                }
            }
        }
    }
}