using System;
using System.IO;
using System.Collections.Generic;
using System.Xml;
using System.Linq;
using Aitex.Core.Util;
using Aitex.Core.RT.SCCore;
using Aitex.Core.RT.Log;
namespace CyberX8_Simulator.Instances
{
    
    public class SystemConfig : Singleton<SystemConfig>
    {
        private Dictionary<string, SCConfigItem> _items = new Dictionary<string, SCConfigItem>();
        List<string> paths = new List<string>();
        public void Initialize()
        {
            var current_path = Environment.CurrentDirectory;
            int nIndesx = current_path.LastIndexOf("CyberX8\\");
            current_path = current_path.Substring(0, nIndesx + 8);
                
            GetConfigFilePath(current_path);
            string cfgPath = paths.Find(item => item.Contains("CyberX8_RT"));
            if (cfgPath != null)
            {
                string config_path = cfgPath;
                string system_cfg = config_path.Replace("_sc.data", "System.sccfg"); 
                if(File.Exists(system_cfg))
                {
                    BuildItems(system_cfg);

                    if (File.Exists(config_path))
                    {
                        var cfg_stream = File.Open(config_path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
                        XmlDocument xmlData = new XmlDocument();
                        xmlData.Load(config_path);

                        XmlNodeList scdatas = xmlData.SelectNodes("root/scdata");
                        foreach (XmlElement nodedata in scdatas)
                        {
                            string name = nodedata.GetAttribute("name");
                            if (_items.ContainsKey(name))
                            {
                                InitializeItemValue(_items[name], nodedata.GetAttribute("value"));
                            }
                        }
                    }
                }
            }
        }

        private bool InitializeItemValue(SCConfigItem item, string value)
        {
            bool changed = false;
            switch (item.Type)
            {
                case "Bool":
                    bool boolValue;
                    if (bool.TryParse(value, out boolValue) && boolValue != item.BoolValue)
                    {
                        item.BoolValue = boolValue;
                        changed = true;
                    }
                    break;
                case "Integer":
                    int intValue;
                    if (int.TryParse(value, out intValue) && intValue != item.IntValue)
                    {

                        int.TryParse(item.Min, out int min);
                        int.TryParse(item.Max, out int max);

                        if (intValue < min || intValue > max)
                        {
                            //EV.PostWarningLog(ModuleNameString.System, $"SC {item.PathName} value  {intValue} out of setting range ({item.Min}, {item.Max})");
                            break;
                        }
                        item.IntValue = intValue;
                        changed = true;
                    }
                    break;
                case "Double":
                    double doubleValue;
                    if (double.TryParse(value, out doubleValue) && Math.Abs(doubleValue - item.DoubleValue) > 0.0001)
                    {
                        double.TryParse(item.Min, out double min);
                        double.TryParse(item.Max, out double max);
                        if (doubleValue < min || doubleValue > max)
                        {
                            //EV.PostWarningLog(ModuleNameString.System, $"SC {item.PathName}  value  {doubleValue} out of setting range ({item.Min}, {item.Max})");
                            break;
                        }
                        item.DoubleValue = doubleValue;
                        changed = true;
                    }
                    break;
                case "String":
                    if (value != item.StringValue)
                    {
                        item.StringValue = value;
                        changed = true;
                    }
                    break;
            }

            return changed;
        }

        public T GetValue<T>(string name) where T : struct
        {
            try
            {
                if (typeof(T) == typeof(bool))
                    return (T)(object)_items[name].BoolValue;
                if (typeof(T) == typeof(int))
                    return (T)(object)_items[name].IntValue;
                if (typeof(T) == typeof(double))
                    return (T)(object)_items[name].DoubleValue;
            }
            catch (KeyNotFoundException)
            {

                return default(T);
            }
            catch (Exception)
            {

                return default(T);
            }

            return default(T);
        }

        private void BuildItems(string xmlFile)
        {
            XmlDocument xml = new XmlDocument();

            try
            {
                var stream = File.Open(xmlFile, FileMode.Open, FileAccess.ReadWrite);
                xml.Load(stream);

                XmlNodeList nodeConfigs = xml.SelectNodes("root/configs");
                foreach (XmlElement nodeConfig in nodeConfigs)
                {
                    BuildPathConfigs(nodeConfig.GetAttribute("name"), nodeConfig as XmlElement);
                }
            }
            catch (Exception ex)
            {
                LOG.WriteExeption(ex);
            }
        }

        private void BuildPathConfigs(string parentPath, XmlElement configElement)
        {
            XmlNodeList nodeConfigsList = configElement.SelectNodes("configs");
            foreach (XmlElement nodeConfig in nodeConfigsList)
            {
                if (string.IsNullOrEmpty(parentPath))
                {
                    BuildPathConfigs(nodeConfig.GetAttribute("name"), nodeConfig as XmlElement);
                }
                else
                {
                    BuildPathConfigs(parentPath + "." + nodeConfig.GetAttribute("name"), nodeConfig as XmlElement);
                }
            }

            XmlNodeList nodeConfigs = configElement.SelectNodes("config");
            foreach (XmlElement nodeConfig in nodeConfigs)
            {
                SCConfigItem item = new SCConfigItem()
                {
                    Default = nodeConfig.GetAttribute("default"),

                    Name = nodeConfig.GetAttribute("name"),
                    Description = nodeConfig.GetAttribute("description"),
                    Max = nodeConfig.GetAttribute("max"),
                    Min = nodeConfig.GetAttribute("min"),
                    Parameter = nodeConfig.GetAttribute("paramter"),
                    Path = parentPath,
                    Tag = nodeConfig.GetAttribute("tag"),
                    Type = nodeConfig.GetAttribute("type"),
                    Unit = nodeConfig.GetAttribute("unit"),
                };
                InitializeItemValue(item, item.Default);

                if (_items.ContainsKey(item.PathName))
                {
                    //LOG.Error("Duplicated SC item, "+ item.PathName);
                }

                _items[item.PathName] = item;
            }
        }

        private void SearchFileInPath(string path, string folderName, string fileName, ref List<string> projectPaths)
        {
            var dirs = Directory.GetDirectories(path, "*.*", SearchOption.TopDirectoryOnly).ToList();  //获取当前路径下所有文件与文件夹
            var desFolders = dirs.FindAll(x => x.Contains(folderName)); //在当前目录中查找目标文件夹
            if (desFolders == null || desFolders.Count <= 0)
            {
                //当前目录未找到目标则递归
                foreach (var dir in dirs)
                {
                    SearchFileInPath(dir, folderName, fileName, ref projectPaths);
                }
            }
            else
            {
                //找到则添加至结果集
                projectPaths.Add(path + "\\" + folderName + "\\" + fileName);
            }
        }

        public void GetConfigFilePath(string path)
        {
            DirectoryInfo dir = new DirectoryInfo(path);

            //找到该目录下的文件
            FileInfo[] fi = dir.GetFiles();
            foreach (FileInfo f in fi)
            {
                if (f.FullName.Contains("\\CyberX8_RT\\") && f.FullName.Contains("\\Config\\") && f.Name == "_sc.data")
                {
                    paths.Add(f.FullName);
                    return;
                }
            }

            //找到该目录下的所有目录再递归
            DirectoryInfo[] subDir = dir.GetDirectories();
            foreach (DirectoryInfo d in subDir)
            {
                GetConfigFilePath(d.FullName);
            }
        }
    }
}