using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace LTEMvcApp.Models
{
    /// <summary>
    /// 日志管理器 - 从JavaScript logs.js迁移
    /// </summary>
    public class LogsManager
    {
        #region 常量定义

        public const int DIR_NONE = 0;
        public const int DIR_UL = 1;
        public const int DIR_DL = 2;
        public const int DIR_FROM = 3;
        public const int DIR_TO = 4;

        #endregion

        #region 静态字段

        private static readonly string[] modelList = { "RUE", "UE", "PROBE", "ENB", "N3IWF", "MBMSGW", "MME", "IMS", "LICENSE", "MONITOR" };

        private static readonly Dictionary<string, object> modelConfig = new()
        {
            { "RUE", new { icon = "icon-ue2" } },
            { "UE", new { icon = "icon-ue" } },
            { "PROBE", new { } },
            { "ENB", new { icon = "icon-air", modelHint = "enb|gnb|bbu", title = "RAN" } },
            { "N3IWF", new { icon = "icon-air", modelHint = "n3iwf", title = "N3IWF" } },
            { "MME", new { icon = "icon-server", modelHint = "epc|mme|amf", title = "CN" } },
            { "MBMSGW", new { icon = "icon-download", modelHint = "mbms" } },
            { "IMS", new { icon = "icon-dial" } },
            { "MONITOR", new { icon = "icon-monitor" } },
            { "LICENSE", new { icon = "icon-file" } }
        };

        #endregion

        #region 实例字段

        private readonly Dictionary<string, object> _logs = new();
        private readonly int _logDefaultLevel = 0; // localStorage.debug >> 0
        private readonly string[] _logsMethods = { "error", "warn", "info", "debug", "prof" };
        private readonly long _startDate = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();

        private readonly Dictionary<string, object> _stringIDs = new();
        private readonly List<string> _stringList = new();

        private readonly Dictionary<int, object> _eventListeners = new();
        private int _eventListenerId = 0;

        #endregion

        #region 属性

        public string Mode { get; set; } = "web";
        public string FontDef { get; set; } = "13px helvetica, arial, verdana, sans-serif";
        public int LastClientId { get; set; } = 0;
        public int LogsMax { get; set; } = 100000;
        public List<int[]> LogsRange { get; set; } = new();
        public List<int> LogsInfo { get; set; } = new();
        public List<string> LogsLayers { get; set; } = new();
        public string ExportTimeFormat { get; set; } = "HH:mm:ss.fff";

        #endregion

        #region 构造函数

        public LogsManager()
        {
            Init();
        }

        #endregion

        #region 初始化方法

        public void Init()
        {
            // 初始化通道定义
            var def = new Dictionary<string, object>();
            var ids = new Dictionary<string, int>();

            // 这里可以添加通道定义的初始化逻辑
            // 对应JavaScript中的_channelsDef.forEach逻辑
        }

        #endregion

        #region 日志相关方法

        public void SetLogger(string name, object instance)
        {
            var module = new { level = _logDefaultLevel, list = new List<object>() };
            _logs[name] = module;

            // 为每个日志方法创建对应的函数
            for (int i = 0; i < _logsMethods.Length; i++)
            {
                var methodName = _logsMethods[i];
                var level = 1 << i;
                // 这里需要动态设置instance的方法
            }
        }

        private void Log(string module, string id, object log)
        {
            // 实现日志记录逻辑
            var logObj = new
            {
                ts = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds() - _startDate,
                level = ((dynamic)log).level,
                args = ((dynamic)log).args
            };

            var moduleObj = (dynamic)_logs[module];
            moduleObj.list.Add(logObj);

            if (moduleObj.list.Count > 20)
                moduleObj.list.RemoveAt(0);

            if ((logObj.level & moduleObj.level) != 0)
            {
                if ((logObj.level & 0x1) != 0 && moduleObj.level == 0x1)
                {
                    foreach (var item in moduleObj.list)
                    {
                        LogDisplay(id, item);
                    }
                    moduleObj.list.Clear();
                }
                else
                {
                    LogDisplay(id, logObj);
                }
            }
        }

        private void LogDisplay(string id, object log)
        {
            var time = Ts2Time(((dynamic)log).ts);
            var level = ((dynamic)log).level;
            var args = ((dynamic)log).args;

            string style = "";
            int index = 0;

            if ((level & 0x1) != 0)
            {
                style = "background: red";
                index = 0;
            }
            else if ((level & 0x2) != 0)
            {
                style = "background: yellow";
                index = 1;
            }
            else if ((level & 0x10) != 0)
            {
                style = "background: #00ff00";
                index = 4;
            }
            else
            {
                index = (int)Math.Floor(Math.Log2(level));
            }

            // 这里可以输出到控制台或日志系统
            Console.WriteLine($"[{time}][{_logsMethods[index].ToUpper()}][{id}]");
        }

        #endregion

        #region 时间转换方法

        public string Ts2Time(long ts, bool full = false)
        {
            // 持续时间 (< 2000-01-01 00:00:00)
            if (ts < 946681200000)
                return Ts2Duration(ts);

            var dateTime = DateTimeOffset.FromUnixTimeMilliseconds(ts).DateTime;
            var prefix = "";

            if (full)
            {
                var day = dateTime.Day;
                var month = dateTime.Month;
                var year = dateTime.Year;
                prefix = $"{year}-{month:D2}-{day:D2} ";
            }

            var h = dateTime.Hour;
            var m = dateTime.Minute;
            var s = dateTime.Second;
            var ms = dateTime.Millisecond;

            return $"{prefix}{h:D2}:{m:D2}:{s:D2}.{ms:D3}";
        }

        public string Ts2Duration(long ts)
        {
            var prefix = "";
            if (ts < 0)
            {
                prefix = "-";
                ts = -ts;
            }

            var timeSpan = TimeSpan.FromMilliseconds(ts);
            var h = (int)timeSpan.TotalHours;
            var m = timeSpan.Minutes;
            var s = timeSpan.Seconds;
            var ms = timeSpan.Milliseconds;

            return $"{prefix}{h:D2}:{m:D2}:{s:D2}.{ms:D3}";
        }

        public long TsDayOffset(long ts)
        {
            if (ts < 946681200000)
                return 0;

            var dateTime = DateTimeOffset.FromUnixTimeMilliseconds(ts).DateTime;
            var dayStart = new DateTime(dateTime.Year, dateTime.Month, dateTime.Day, 0, 0, 0);
            return new DateTimeOffset(dayStart).ToUnixTimeMilliseconds();
        }

        public long? Str2Ts(string value)
        {
            var match = Regex.Match(value, @"^(((\d+):)?(\d+):)?(\d+)(\.(\d+))?$");
            if (match.Success)
            {
                var h = int.Parse(match.Groups[3].Success ? match.Groups[3].Value : "0");
                var m = int.Parse(match.Groups[4].Success ? match.Groups[4].Value : "0");
                var s = int.Parse(match.Groups[5].Value);
                var msStr = match.Groups[7].Success ? match.Groups[7].Value : "0";
                var ms = (int)((int.Parse(msStr) * Math.Pow(10, 3 - msStr.Length)));
                return h * 3600000L + m * 60000L + s * 1000L + ms;
            }
            return null;
        }

        #endregion

        #region 字符串处理方法

        public int String2Id(string str)
        {
            if (_stringIDs.ContainsKey(str))
                return (int)_stringIDs[str];

            var id = _stringList.Count + 1;
            _stringIDs[str] = id;
            _stringList.Add(str);
            return id;
        }

        public string Id2String(int id)
        {
            if (id > 0 && id <= _stringList.Count)
                return _stringList[id - 1];
            return "";
        }

        public string Tooltip(string txt)
        {
            return txt?.Replace(" ", "&nbsp;") ?? "";
        }

        public T Merge<T>(T dst, T src, bool override_ = false) where T : class
        {
            // 实现对象合并逻辑
            return dst;
        }

        public T Clone<T>(T o) where T : class
        {
            // 实现对象克隆逻辑
            return o;
        }

        public string PadLeft(string txt, char c, int len)
        {
            return txt.PadLeft(len, c);
        }

        #endregion

        #region 哈希和工具方法

        public uint Hash(string str)
        {
            uint h = 5381;
            for (int i = 0; i < str.Length; i++)
            {
                uint c = (uint)str[i];
                h = ((h << 5) + h) ^ c;
            }
            return h;
        }

        public string[] Levels { get; } = { "none", "error", "warn", "info", "debug" };

        public int GetLevel(string str)
        {
            return Array.IndexOf(Levels, str);
        }

        public string GetHtmlIcon(string c)
        {
            return $"<img src='data:image/gif;base64,R0lGODlhAQABAID/AMDAwAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==' class='x-tree-icon {c}'>";
        }

        public List<T> MapFilter<T>(T[] array, Func<T, int, T> func)
        {
            var res = new List<T>();
            for (int i = 0; i < array.Length; i++)
            {
                var item = func(array[i], i);
                if (item != null)
                    res.Add(item);
            }
            return res;
        }

        public void DrawConstellation(object canvas, byte[] constel)
        {
            // 实现星座图绘制逻辑
        }

        public string CreateIcon(string icon, string tooltip)
        {
            return $"<img src=\"resources/images/{icon}.png\" height=12 title=\"{tooltip}\">";
        }

        public double GetColLight(string c)
        {
            var match = Regex.Match(c, @"#([\da-fA-F]{2})([\da-fA-F]{2})([\da-fA-F]{2})");
            if (match.Success)
            {
                var r = int.Parse(match.Groups[1].Value, System.Globalization.NumberStyles.HexNumber);
                var g = int.Parse(match.Groups[2].Value, System.Globalization.NumberStyles.HexNumber);
                var b = int.Parse(match.Groups[3].Value, System.Globalization.NumberStyles.HexNumber);
                var h = (r * r * 0.299 + g * g * 0.587 + b * b * 0.114) / (255.0 * 255.0);
                return h;
            }
            return 1;
        }

        public string GetTextColor(string bgColor)
        {
            var h = GetColLight(bgColor);
            return h >= 0.15 ? "black" : "white";
        }

        #endregion

        #region 数组操作方法

        public void ArrayIntersect<T>(List<T> a, List<T> b)
        {
            for (int i = a.Count - 1; i >= 0; i--)
            {
                var index = b.IndexOf(a[i]);
                if (index < 0)
                    a.RemoveAt(i);
            }
        }

        public long String2Size(string str)
        {
            if (string.IsNullOrEmpty(str)) return 0;

            var match = Regex.Match(str, @"^(\d+)([KMG])$");
            if (match.Success)
            {
                var size = long.Parse(match.Groups[1].Value);
                var unit = match.Groups[2].Value;
                return unit switch
                {
                    "K" => size * 1000,
                    "M" => size * 1000000,
                    "G" => size * 1000000000,
                    _ => size
                };
            }
            return long.Parse(str);
        }

        public Dictionary<string, object> SplitArgs(string args, Dictionary<string, object> cfg)
        {
            var hash = new Dictionary<string, object>();
            var argList = Regex.Split(args, @"\s+");
            
            foreach (var arg in argList)
            {
                var parts = arg.Split('=');
                if (parts.Length == 2)
                {
                    var key = parts[0];
                    var value = parts[1];

                    if (cfg.ContainsKey(key))
                    {
                        var cfgType = cfg[key].GetType();
                        if (cfgType == typeof(int))
                        {
                            hash[key] = int.Parse(value);
                        }
                        else if (cfgType == typeof(long))
                        {
                            hash[key] = long.Parse(value);
                        }
                        else
                        {
                            hash[key] = value;
                        }
                    }
                    else
                    {
                        hash[key] = value;
                    }
                }
            }
            return hash;
        }

        #endregion

        #region 事件处理方法

        public int RegisterEventListener(string type, Action<object> cb)
        {
            var id = _eventListenerId++;
            _eventListeners[id] = new { type = type, cb = cb };
            return id;
        }

        public void UnregisterEventListener(int id)
        {
            _eventListeners.Remove(id);
        }

        public void SendEvent(object eventObj)
        {
            var type = ((dynamic)eventObj).type;
            foreach (var kvp in _eventListeners)
            {
                var el = (dynamic)kvp.Value;
                if (el.type == type || el.type == "*")
                {
                    el.cb(eventObj);
                }
            }
        }

        #endregion

        #region 鼠标事件方法

        public string GetMouseWheelEvent()
        {
            // 检测浏览器类型并返回相应的事件名
            return "mousewheel"; // 简化实现
        }

        public int GetMouseWheelDelta(object eventObj)
        {
            // 实现鼠标滚轮事件处理
            return 0;
        }

        #endregion

        #region 文件导出方法

        public void ExportFile(object data, string filename, string mimetype)
        {
            // 实现文件导出逻辑
        }

        #endregion

        #region 日志排序方法

        public int SortLogs(LTELog a, LTELog b)
        {
            var tsCompare = a.Timestamp.CompareTo(b.Timestamp);
            if (tsCompare != 0) return tsCompare;
            return a.Id.CompareTo(b.Id);
        }

        public int GetLogIndexByTimestamp(List<LTELog> list, long timestamp)
        {
            var l = list.Count;
            var b = l - 1;
            var a = 0;

            while (a <= b)
            {
                var i = (a + b) >> 1;
                var ts_i = list[i].Timestamp;

                if (timestamp < ts_i)
                {
                    b = i - 1;
                }
                else if (timestamp > ts_i)
                {
                    a = i + 1;
                }
                else
                {
                    while (++i < l && list[i].Timestamp == timestamp) ;
                    return i;
                }
            }
            return a;
        }

        public List<LTELog> MergeLogs(List<LTELog> srcList, List<LTELog> dstList)
        {
            var srcLength = srcList.Count;
            var t0 = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
            var dstLength = dstList.Count;

            if (dstLength > 500000 && srcLength < 50000)
            {
                // 排序新数据
                srcList.Sort(SortLogs);
                var t1 = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();

                // 插入
                var a = GetLogIndexByTimestamp(dstList, srcList[0].Timestamp);

                for (int i = 0; i < srcLength; i++)
                {
                    var log = srcList[i];
                    var ts = log.Timestamp;

                    while (a < dstLength)
                    {
                        var ts_a = dstList[a].Timestamp;
                        if (ts < ts_a) break;
                        a++;
                    }

                    if (a == dstLength)
                    {
                        while (i < srcLength)
                        {
                            dstList.Add(srcList[i++]);
                        }
                        break;
                    }

                    dstList.Insert(a, log);
                    a++;
                    dstLength++;
                }
            }
            else
            {
                dstList.AddRange(srcList);
                var t1 = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
                dstList.Sort(SortLogs);
                dstLength = dstList.Count;
            }

            return dstList;
        }

        #endregion

        #region 鼠标移动注册方法

        public void RegisterMouseMove(Action<object> cb)
        {
            // 实现鼠标移动事件注册
        }

        #endregion

        #region 存储更新方法

        public void StoreUpdate<T>(Dictionary<string, T> cache, List<T> store, List<T> list, string id, bool addOnly = false)
        {
            var found = new Dictionary<string, bool>();

            foreach (var item in list)
            {
                var prop = ((dynamic)item).GetType().GetProperty(id)?.GetValue(item)?.ToString();
                if (prop != null)
                {
                    if (!cache.ContainsKey(prop))
                    {
                        store.Add(item);
                        cache[prop] = item;
                    }
                    else
                    {
                        // 更新现有项
                        var index = store.IndexOf(cache[prop]);
                        if (index >= 0)
                            store[index] = item;
                    }
                    found[prop] = true;
                }
            }

            if (!addOnly)
            {
                for (int i = store.Count - 1; i >= 0; i--)
                {
                    var item = store[i];
                    var prop = ((dynamic)item).GetType().GetProperty(id)?.GetValue(item)?.ToString();
                    if (prop != null && !found.ContainsKey(prop))
                    {
                        store.RemoveAt(i);
                        cache.Remove(prop);
                    }
                }
            }
        }

        public T StoreGetById<T>(List<T> store, string id, object value)
        {
            foreach (var item in store)
            {
                var itemValue = ((dynamic)item).GetType().GetProperty(id)?.GetValue(item);
                if (Equals(itemValue, value))
                    return item;
            }
            return default(T);
        }

        #endregion

        #region 日志状态更新方法

        public void LogStateUpdate(object logState, Action cb)
        {
            // 实现日志状态更新逻辑
            cb?.Invoke();
        }

        public void LogStateUpdateEnd(object logState, List<LTELog> logs, Action cb)
        {
            // 实现日志状态更新结束逻辑
            cb?.Invoke();
        }

        #endregion

        #region Canvas设置方法

        public void SetCanvasSize(object canvas, int width, int height)
        {
            // 实现Canvas大小设置逻辑
        }

        #endregion

        #region 文件加载方法

        public void LoadFile(object options)
        {
            // 实现文件加载逻辑
        }

        #endregion

        #region 警告框方法

        public void WarnBox(string title, string message, Action cb = null, object scope = null)
        {
            // 实现警告框显示逻辑
        }

        #endregion

        #region 窗口自动高度设置方法

        public void SetWindowAutoHeight(object win, object config)
        {
            // 实现窗口自动高度设置逻辑
        }

        #endregion

        #region 正则表达式方法

        public Regex GetRexExp(string value)
        {
            var match = Regex.Match(value ?? "", @"^\/(.+)\/([gi]*)$");
            try
            {
                if (match.Success)
                {
                    var pattern = match.Groups[1].Value;
                    var flags = match.Groups[2].Value;
                    var options = RegexOptions.None;
                    if (flags.Contains("i")) options |= RegexOptions.IgnoreCase;
                    if (flags.Contains("g")) options |= RegexOptions.Multiline;
                    return new Regex($"({pattern})", options);
                }
                return new Regex($"({value})", RegexOptions.IgnoreCase | RegexOptions.Multiline);
            }
            catch
            {
                return null;
            }
        }

        #endregion

        #region 本地存储方法

        public T LocalStorageGet<T>(string name)
        {
            // 实现本地存储获取逻辑
            return default(T);
        }

        public void LocalStorageSet<T>(string name, T value)
        {
            // 实现本地存储设置逻辑
        }

        #endregion

        #region 测试方法

        public void TestColor()
        {
            // 实现颜色测试逻辑
        }

        #endregion

        #region 工具方法

        public string FilterValueFormater(string type, object value, bool highLight = false)
        {
            // 实现过滤器值格式化逻辑
            return value?.ToString() ?? "";
        }

        public void UpdateFilter()
        {
            // 实现过滤器更新逻辑
        }

        public void LockFilter(bool state)
        {
            // 实现过滤器锁定逻辑
        }

        public void SelectLog(LTELog log)
        {
            // 实现日志选择逻辑
        }

        public void GotoTime(object time)
        {
            // 实现时间跳转逻辑
        }

        public void UpdateLogs(object parameters = null)
        {
            // 实现日志更新逻辑
        }

        public List<LTELog> GetLogs(object client = null)
        {
            // 实现获取日志逻辑
            return new List<LTELog>();
        }

        public List<object> GetClients()
        {
            // 实现获取客户端列表逻辑
            return new List<object>();
        }

        public void AddClient(object cfg, bool persistent = false, bool save = true)
        {
            // 实现添加客户端逻辑
        }

        public object GetClientById(string storeId)
        {
            // 实现根据ID获取客户端逻辑
            return null;
        }

        public bool RemoveClient(object client)
        {
            // 实现移除客户端逻辑
            return false;
        }

        public void SaveConfig()
        {
            // 实现配置保存逻辑
        }

        public void RefreshClientGrid()
        {
            // 实现客户端网格刷新逻辑
        }

        public void Load(bool loading)
        {
            // 实现加载状态设置逻辑
        }

        public void GridColumnsUpdate()
        {
            // 实现网格列更新逻辑
        }

        public void ContextMenu(List<object> items, LTELog log)
        {
            // 实现上下文菜单逻辑
        }

        public void AddTab(object tab, bool active = false)
        {
            // 实现添加标签页逻辑
        }

        #endregion

        #region 层配置方法

        /// <summary>
        /// 获取层配置
        /// </summary>
        /// <returns>层配置字典</returns>
        public Dictionary<string, object> GetLayerConfig()
        {
            var configs= LogLayerTypes.GetLayerConfigs();
            var result = new Dictionary<string, object>();
            foreach (var kvp in configs)
            {
                var config = kvp.Value;
                result[kvp.Key] = new
                {
                    color = config.Color,
                    dir = config.Direction,
                    debug = config.Debug != null ? new { level = config.Debug.Level, max_size = config.Debug.MaxSize } : null,
                    epc = config.EPC,
                    max = config.Max != null ? new { max_size = config.Max.MaxSize } : null
                };
            }
            return result;
        }

        #endregion
    }
}