Virgo_ST/Framework/Common/SCCore/SystemConfigManager.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Xml;
using Aitex.Common.Util;
using Aitex.Core.RT.ConfigCenter;
using Aitex.Core.RT.DataCenter;
using Aitex.Core.RT.Event;
using Aitex.Core.RT.Log;
using Aitex.Core.RT.OperationCenter;
using Aitex.Core.RT.SCCore;
using Aitex.Core.Util;
using MECF.Framework.Common.Equipment;

namespace MECF.Framework.Common.SCCore
{
    public class SystemConfigManager : Singleton<SystemConfigManager>, ISCManager
    {
        private Dictionary<string, SCConfigItem> _items = new Dictionary<string, SCConfigItem>();
        private object _itemLocker = new object();

        private string _scConfigFile  ;
        private string _scDataFile = PathManager.GetCfgDir() + "_sc.data";
        private string _scDataBackupFile = PathManager.GetCfgDir() + "_sc.data.bak";
        private string _scDataErrorFile = PathManager.GetCfgDir() + "_sc.data.err.";
 
        public void Initialize(string scConfigPathName)
        {
            _scConfigFile =  scConfigPathName;

            BuildItems(_scConfigFile);

            BackupAndRecoverDataFile();

            CustomData();

            GenerateDataFile();

            foreach (var item in _items)
            {
                CONFIG.Subscribe("", item.Key, ()=>item.Value.Value);
            }

            OP.Subscribe("System.SetConfig", InvokeSetConfig);

            SC.Manager = this;
        }

        private bool InvokeSetConfig(string cmd, object[] parameters)
        {
            string key = (string) parameters[0];

            object old = GetConfigValueAsObject(key);

            if ((string)parameters[0] == "PMB.Chiller.ChillerSameWithPMA" && (string)parameters[1] == "true")
            {
                if (_items["PMA.Chiller.EnableChiller"].Value.ToString() == "False") return true;
            }

            if (InitializeItemValue(_items[(string)parameters[0]], (string)parameters[1]))
            {
                GenerateDataFile();
                EV.PostInfoLog("System", string.Format("SC {0} value changed from {1} to {2}", key, old, parameters[1]));

            }

            if ((string)parameters[0] == "PMA.Chiller.EnableChiller" && (string)parameters[1] == "false")
            {
                if (_items["PMB.Chiller.ChillerSameWithPMA"].Value.ToString() == "False") return true;
                if (InitializeItemValue(_items["PMB.Chiller.ChillerSameWithPMA"], "False"))
                {
                    GenerateDataFile();
                    EV.PostInfoLog("System", string.Format("SC {0} value changed from {1} to {2}", "PMB.Chiller.ChillerSameWithPMA", "true", "false"));
                }
            }

            if ((string)parameters[0] == "PMB.Chiller.EnableChiller" && (string)parameters[1] == "false")
            {
                if (_items["PMB.Chiller.ChillerSameWithPMA"].Value.ToString() == "False") return true;
                if (InitializeItemValue(_items["PMB.Chiller.EnableChiller"], "true"))
                {
                    GenerateDataFile();
                    EV.PostInfoLog("System", string.Format("SC {0} value changed from {1} to {2}", "PMB.Chiller.EnableChiller", "false", "true"));
                }
            }

            if ((string)parameters[0] == "PMB.Chiller.ChillerSameWithPMA" && (string)parameters[1] == "true")
            {
                if (_items["PMB.Chiller.EnableChiller"].Value.ToString() == "True") return true;
                if (InitializeItemValue(_items["PMB.Chiller.EnableChiller"], "true"))
                {
                    GenerateDataFile();
                    EV.PostInfoLog("System", string.Format("SC {0} value changed from {1} to {2}", "PMB.Chiller.EnableChiller", "false", "true"));
                }
            }

            return true;
        }

        public void Terminate()
        {

        }

        public string GetFileContent()
        {
            if (!File.Exists(_scConfigFile))
                return "";

            StringBuilder s = new StringBuilder();
            try
            {
                using (StreamReader sr = new StreamReader(_scConfigFile))
                {
                    while (!sr.EndOfStream)
                    {
                        s.Append(sr.ReadLine());
                    }
                }
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
                return "";
            }
            return s.ToString();
        }

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

            try
            {
                xml.Load(xmlFile);

                XmlNodeList nodeConfigs = xml.SelectNodes("root/configs");
                foreach (XmlElement nodeConfig in nodeConfigs)
                {
                    BuildPathConfigs(nodeConfig.GetAttribute("name"), nodeConfig as XmlElement);
                }
            }
            catch (Exception ex)
            {
                LOG.Write(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 BackupAndRecoverDataFile()
        {
            try
            {
                if (File.Exists(_scDataFile) && IsXmlFileLoadable(_scDataFile))
                {
                    File.Copy(_scDataFile, _scDataBackupFile, true);
                }
                else if (File.Exists(_scDataBackupFile) && IsXmlFileLoadable(_scDataBackupFile))
                {
                    if (File.Exists(_scDataFile))
                    {
                        File.Copy(_scDataFile, _scDataErrorFile + DateTime.Now.ToString("yyyyMMdd_HHmmss"), true);
                    }

                    File.Copy(_scDataBackupFile, _scDataFile, true);
                }
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
            }
        }

        private void CustomData()
        {
            Dictionary<string, string> values = new Dictionary<string, string>();
            try
            {
                if (File.Exists(_scDataFile))
                {
                    XmlDocument xmlData = new XmlDocument();
                    xmlData.Load(_scDataFile);

                    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"));
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
            }

        }

        private void GenerateDataFile()
        {
            try
            {
                XmlDocument xml = new XmlDocument();
                xml.LoadXml("<?xml version=\"1.0\" encoding=\"utf-8\"?><root></root>");
                XmlElement nodeRoot = xml.SelectSingleNode("root") as XmlElement;
                foreach (var scConfigItem in _items)
                {
                    XmlElement node = xml.CreateElement("scdata");
                    node.SetAttribute("name", scConfigItem.Key);
                    node.SetAttribute("value", scConfigItem.Value.Value.ToString());
                    nodeRoot.AppendChild(node);
                }

                if (File.Exists(_scDataFile) && IsXmlFileLoadable(_scDataFile))
                {
                    File.Copy(_scDataFile, _scDataBackupFile, true);
                    //File.Delete(_scDataFile);
                }

                using (FileStream fsFileStream = new FileStream(_scDataFile,
                    FileMode.OpenOrCreate, FileAccess.Write, FileShare.None, 1024, FileOptions.WriteThrough))
                {
                    fsFileStream.SetLength(0);

                    XmlWriterSettings settings = new XmlWriterSettings();
                    settings.Indent = true;
                    settings.OmitXmlDeclaration = false;
                     
                    using (XmlWriter xmlWrite = XmlWriter.Create(fsFileStream, settings))
                    {
                        xml.Save(xmlWrite);
                    }
                }
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
            }
        }

        private bool IsXmlFileLoadable(string file)
        {
            try
            {
                XmlDocument xml = new XmlDocument();
                xml.Load(file);
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
                return false;
            }

            return true;
        }

        public SCConfigItem GetConfigItem(string name)
        {
            //Debug.Assert(_items.ContainsKey(name), "can not find sc name, "+name);

            if (!_items.ContainsKey(name))
            {
                return null;
            }

            return _items[name];
        }


        public bool ContainsItem(string name)
        {
            return _items.ContainsKey(name);
        }

        public object GetConfigValueAsObject(string name)
        {
            SCConfigItem item = GetConfigItem(name);
            switch (item.Type)
            {
                case "Bool": return item.BoolValue;
                case "Integer": return item.IntValue;
                case "Double": return item.DoubleValue;
                case "String": return item.StringValue;
            }

            return null;
        }

        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)
            {
                MessageBox.Show($"Can not find system config item {name}");
                return default(T);
            }
            catch (Exception)
            {
                MessageBox.Show($"Can not get valid system config item value {name}");
                return default(T);
            }

            Debug.Assert(false, "unsupported type");

            return default(T);
        }

        public string GetStringValue(string name)
        {
            if (!_items.ContainsKey(name))
                return null;

            return _items[name].StringValue;
        }


        public List<SCConfigItem> GetItemList()
        {
            return _items.Values.ToList();
        }

        public void SetItemValueFromString(string name, string value)
        {
            if (InitializeItemValue(_items[name], value))
            {
                GenerateDataFile();
            }

        }

        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 void SetItemValue(string name, object value)
        {
            Debug.Assert(_items.ContainsKey(name), "can not find sc name, " + name);

            if (!_items.ContainsKey(name))
            {
                return;
            }

            bool changed = false;
            switch (_items[name].Type)
            {
                case "Bool":
                    bool boolValue = (bool)value;
                    if (boolValue != _items[name].BoolValue)
                    {
                        _items[name].BoolValue = boolValue;
                        changed = true;
                    }
                    break;
                case "Integer":
                    int intValue = (int)value;
                    if (intValue != _items[name].IntValue)
                    {
                        _items[name].IntValue = intValue;
                        changed = true;
                    }
                    break;
                case "Double":
                    double doubleValue = (double)value;
                    if (Math.Abs(doubleValue - _items[name].DoubleValue) > 0.0001)
                    {
                        _items[name].DoubleValue = doubleValue;
                        changed = true;
                    }
                    break;
                case "String":
                    string stringValue = (string)value;
                    if (stringValue != _items[name].StringValue)
                    {
                        _items[name].StringValue = stringValue;
                        changed = true;
                    }
                    break;
            }

            if (changed)
            {
                GenerateDataFile();
            }
        }

        public void SetItemValueStringFormat(string name, string value)
        {
            Debug.Assert(_items.ContainsKey(name), "can not find sc name, " + name);

            if (!_items.ContainsKey(name))
            {
                return;
            }

            bool changed = false;
            switch (_items[name].Type)
            {
                case "Bool":
                    bool boolValue = Convert.ToBoolean(value);
                    if (boolValue != _items[name].BoolValue)
                    {
                        _items[name].BoolValue = boolValue;
                        changed = true;
                    }
                    break;
                case "Integer":
                    int intValue = Convert.ToInt32(value);
                    if (intValue != _items[name].IntValue)
                    {
                        _items[name].IntValue = intValue;
                        changed = true;
                    }
                    break;
                case "Double":
                    double doubleValue = Convert.ToDouble(value);
                    if (Math.Abs(doubleValue - _items[name].DoubleValue) > 0.0001)
                    {
                        _items[name].DoubleValue = doubleValue;
                        changed = true;
                    }
                    break;
                case "String":
                    string stringValue = (string)value;
                    if (stringValue != _items[name].StringValue)
                    {
                        _items[name].StringValue = stringValue;
                        changed = true;
                    }
                    break;
            }

            if (changed)
            {
                GenerateDataFile();
            }
        }

        public void SetItemValue(string name, bool value)
        {
            Debug.Assert(_items.ContainsKey(name), "can not find sc name, " + name);
            Debug.Assert(_items[name].Type=="Bool", "sc type not bool, defined as" + _items[name].Type);

            if (value != _items[name].BoolValue)
            {
                _items[name].BoolValue = value;

                GenerateDataFile();
            }
        }

        public void SetItemValue(string name, int value)
        {
            Debug.Assert(_items.ContainsKey(name), "can not find sc name, " + name);
            Debug.Assert(_items[name].Type == "Integer", "sc type not bool, defined as" + _items[name].Type);

            if (value != _items[name].IntValue)
            {
                _items[name].IntValue = value;

                GenerateDataFile();
            }
        }

        public void SetItemValue(string name, double value)
        {
            Debug.Assert(_items.ContainsKey(name), "can not find sc name, " + name);
            Debug.Assert(_items[name].Type == "Double", "sc type not bool, defined as" + _items[name].Type);

            if (Math.Abs(value - _items[name].DoubleValue) > 0.0001)
            {
                _items[name].DoubleValue = value;

                GenerateDataFile();
            }
        }

        public void SetItemValue(string name, string value)
        {
            Debug.Assert(_items.ContainsKey(name), "can not find sc name, " + name);
 
            if (value != _items[name].StringValue)
            {
                _items[name].StringValue = value;

                GenerateDataFile();
            }
        }
    }
}