using FLY.OBJComponents.Common;
using FLY.OBJComponents.IService;
using FObjBase;
using Misc;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FLY.OBJComponents.Server
{
    public class ErrorConf
    {
        #region 延时推送 MARKNO
        const int MARKNO_DELAY_ISCONNECTED = 4;
        #endregion

        /// <summary>
        /// 需要设置
        /// </summary>
        PLCProxySystem PLCos;
        /// <summary>
        /// 报警系统
        /// </summary>
        WarningSystem2 mWarning;
        /// <summary>
        /// 报警码自动排号，再枚举IsError 属性，对应的异常会被设置为ErrCode, 然后ErrCode++
        /// </summary>
        public int ErrCode =0;

        class PlcDisconnectedErrMsg 
        {
            public int ErrCode;
            public string Description;
        }
        List<PlcDisconnectedErrMsg> plcDisconnectedErrMsgs = new List<PlcDisconnectedErrMsg>();

        public ErrorConf(PLCProxySystem PLCos, WarningSystem2 mWarning, string plcName) : this(PLCos, mWarning, new string[] { plcName })
        { 
        
        }
        
        public ErrorConf(PLCProxySystem PLCos, WarningSystem2 mWarning, string[] plcNames)
        {
            initialize(PLCos, mWarning, plcNames, PlcErrNos.Instance.ERRNO_PLC_DISCONNECTED.Code - (PLCos.PLCs.Count() - 1));
        }

        public ErrorConf(PLCProxySystem PLCos, WarningSystem2 mWarning, string[] plcNames, int plcErrCodeBegin)
        {
            initialize(PLCos, mWarning, plcNames, plcErrCodeBegin);
        }
        void initialize(PLCProxySystem PLCos, WarningSystem2 mWarning, string[] plcNames, int plcErrCodeBegin) 
        {
            this.PLCos = PLCos;
            this.mWarning = mWarning;

            //初始化 PLC连接断开的描述列表
            int plcCnt = PLCos.PLCs.Count();
            int errCode = plcErrCodeBegin;
            string descrption = PlcErrNos.Instance.ERRNO_PLC_DISCONNECTED.Description;
            for (int i = 0; i < plcCnt; i++)
            {
                plcDisconnectedErrMsgs.Add(new PlcDisconnectedErrMsg()
                {
                    ErrCode = errCode + i,
                    Description = $"{GetPlcName(plcCnt, i, plcNames)} " + descrption
                });
            }
        }
        #region 报警
        public class ErrorAction
        {
            public List<ErrorInfo> error_property;
            public object state;
            public delegate void ErrorHandler(ref string msg, object state);
            public ErrorHandler action;
        }
        public class ErrorInfo
        {
            public string property;
            public int code;
            public string msg;
        }
        Dictionary<INotifyPropertyChanged, ErrorAction> obj_error = new Dictionary<INotifyPropertyChanged, ErrorAction>();

        public void AddErrorAction(INotifyPropertyChanged sender, ErrorAction.ErrorHandler errorHandler = null, object state = null)
        {
            //反射找出全部是报警的property
            List<ErrorInfo> error_property = new List<ErrorInfo>();
            foreach (var propertyInfo in sender.GetType().GetProperties())
            {
                if (propertyInfo.GetCustomAttributes(typeof(IsErrorAttribute), false).Count() > 0)
                {
                    //肯定有，没有就让它出错！！！
                    string desp = (propertyInfo.GetCustomAttributes(typeof(DescriptionAttribute), false).First() as DescriptionAttribute).Description;
                    //报警如果是反向， 会被设置为放大=-1, 所以 最后属性 肯定是 true 时报警， offIsError没有用
                    
                    ErrorInfo errorInfo = new ErrorInfo()
                    {
                        property = propertyInfo.Name,
                        msg = desp,
                        code = ErrCode
                    };
                    error_property.Add(errorInfo);
                    ErrCode++;
                }
            }
            obj_error.Add(sender, new ErrorAction()
            {
                error_property = error_property,
                action = errorHandler,
                state = state
            });
        }

        /// <summary>
        /// 执行之前，需要调用 AddErrorAction， 向 obj_error 添加报警寄存器操作
        /// </summary>
        public void InitError()
        {
            foreach (var obj in obj_error.Keys)
            {
                obj.PropertyChanged += Obj_PropertyChanged_ForError;
            }

            //--------------------------------------------------------------------------------
            //添加任务
            foreach (var kv in obj_error)
            {
                string objname = PLCos.ObjNames.First(_kv => _kv.Value == kv.Key).Key;
                PLCos.SetPlan(objname, kv.Value.error_property.Select(ei => ei.property).ToArray(), 0);
            }

            //--------------------------------------------------------------------------------
            //连接断开事件, 3秒后再查一次，不能有复位的机会
            FObjBase.PollModule.Current.Poll_Config(PollModule.POLL_CONFIG.ADD,
                () =>
                {
                    for (int i = 0; i < PLCos.PLCs.Count(); i++)
                    {
                        int errcode = plcDisconnectedErrMsgs[i].ErrCode;
                        string description = plcDisconnectedErrMsgs[i].Description;

                        if (!PLCos.PLCs[i].Client.IsConnected)
                        {
                            mWarning.Add(errcode, description, canReset: false);
                        }
                        else {
                            mWarning.Remove(errcode);
                        }
                    }

                }, TimeSpan.FromSeconds(3), true, false, this, MARKNO_DELAY_ISCONNECTED, false);
        }

        string GetPlcName(int plcCnt, int index, string[] plcNames)
        {
            if (plcCnt == 1)
            {
                return plcNames[0];
            }

            //多个PLC
            if (plcCnt != plcNames.Count())
            {
                //没有定义全部名字
                return $"{plcNames[0]} No.{index + 1}";
            }

            return plcNames[index];
        }
        public void ResetError(INotifyPropertyChanged sender) 
        {
            var type = sender.GetType();
            foreach (var ei in obj_error[sender].error_property) 
            {
                var property = type.GetProperty(ei.property);
                property.SetValue(sender, false);
            }
        }
        public void ResetError()
        {
            foreach (var sender in obj_error.Keys) {
                ResetError(sender);
            }
        }
        void Obj_PropertyChanged_ForError(object sender, PropertyChangedEventArgs e)
        {
            ErrorAction errorAction = obj_error[sender as INotifyPropertyChanged];

            var eis = from ei in errorAction.error_property where ei.property == e.PropertyName select ei;
            if (eis.Count() > 0)
            {
                var ei = eis.First();

                //获取描述
                var type = sender.GetType();
                var property = type.GetProperty(ei.property);
                bool b = (bool)property.GetValue(sender, null);
                string description = ei.msg;
                int errcode = ei.code;//每个报警必须不一样！！

                if (b)
                {
                    //修改报警文字内容
                    errorAction.action?.Invoke(ref description, errorAction.state);
                    //报警, 不能被复位的！！！
                    mWarning.Add(errcode, description, canReset: false);
                }
                else {
                    mWarning.Remove(errcode);
                }
            }
        }
        #endregion     
    }
}