using System;
using System.Collections.Generic;
using System.Data.Common;
using System.Text;
using Aitex.Core.RT.DataCenter;
using Aitex.Core.RT.DBCore;
using Aitex.Core.RT.Log;
using Aitex.Core.RT.SCCore;
using Aitex.Core.Util;

namespace Aitex.Core.RT.DataCollection
{
    public class DataCollectionManager
    {
        private int _dataCollectionInterval;

        private object _locker = new object();

        private DateTime _date;

        private PeriodicJob _monitorJob;

        private StringBuilder _stringBuilder = new StringBuilder(10000);

        private string[] _modules = new string[] { "System", "IO.PM1", "IO.PM2", "IO.TM", "PM1", "PM2" };

        private Dictionary<string, string> _dateModule = new Dictionary<string, string>();

        private Dictionary<string, Func<object>> _subscribedData =
            new Dictionary<string, Func<object>>();

        private Dictionary<string, Dictionary<string, Func<object>>> _moduleDictionary =
            new Dictionary<string, Dictionary<string, Func<object>>>();

        public void Initialize()
        {
            _dataCollectionInterval = SC.ContainsItem("System.DataCollectionInterval") ? SC.GetValue<int>("System.DataCollectionInterval") : 1000;
            InitSubscribedRecorded();

            _monitorJob = new PeriodicJob(_dataCollectionInterval, MonitorData, "DataCollection",true);
        }

        private void InitSubscribedRecorded()
        {
            //初始化Dictionary
            foreach (string module1 in _modules)
            {
                _moduleDictionary[module1] = new Dictionary<string, Func<object>>();
            }

            SortedDictionary<string, Func<object>> dbRecordList = DATA.GetDBRecorderList();

            foreach (KeyValuePair<string, Func<object>> item in dbRecordList)
            {
                if (_subscribedData.ContainsKey(item.Key))
                {
                    continue;
                }

                //判断类型,排除引用类型
                object obj = item.Value();
                if (obj != null)
                {
                    Type type = obj.GetType();
                    if (type == typeof(bool) || type == typeof(double) || type == typeof(float) || type == typeof(int) || type == typeof(ushort) ||
                        type == typeof(short) || type == typeof(long))
                    {
                        _subscribedData[item.Key] = item.Value;
                    }
                }
            }

            //注册数据分配在哪个表中
            if (_subscribedData.Count > 0)
            {
                foreach (string key in _subscribedData.Keys)
                {
                    bool flag = false;
                    foreach (string module2 in _modules)
                    {
                        if (key.StartsWith(module2 + ".") || key.StartsWith("IO." + module2 + "."))
                        {
                            _moduleDictionary[module2][key] = _subscribedData[key];
                            flag = true;
                            break;
                        }
                    }

                    if (!flag)
                    {
                        _moduleDictionary["System"][key] = _subscribedData[key];
                    }
                }
            }
        }

        private void UpdateTableSchema(string tableName, Dictionary<string, Func<object>> dataItem)
        {
            if (dataItem.Keys.Count == 0)
            {
                return;
            }

            string sql = $"select column_name from information_schema.columns where table_name='{tableName}'";
            DbDataReader dataReader = DB.Manager.ExecuteReader(sql);

            List<string> list = new List<string>();
            while (dataReader.Read())
            {
                for (int i = 0; i < dataReader.FieldCount; i++)
                {
                    list.Add(dataReader[i].ToString());
                }
            }
            dataReader.Close();

            if (list.Count > 0)
            {
                string cmdText = string.Empty;

                foreach (string key in dataItem.Keys)
                {
                    if (!list.Contains(key))
                    {
                        Type type = dataItem[key]().GetType();
                        string sql1 = DB.GetSqlByNameType(key, type);
                        cmdText += string.Format($"ALTER TABLE \"{tableName}\" ADD COLUMN " + sql1 + ";");
                    }
                }

                DB.ExecuteNonQuery(cmdText);
            }
            else
            {
                Dictionary<string, Type> keyValuePairs = new Dictionary<string, Type>();

                foreach (string key in dataItem.Keys)
                {
                    Type type = dataItem[key]().GetType();
                    keyValuePairs.Add(key, type);
                }

                //time对应PostgreSQL的数据类型为bigint
                DB.CreateTable(tableName, keyValuePairs, "time", typeof(Int64));
            }
        }

        private void MonitorDateTime()
        {
            foreach (string module3 in _modules)
            {
                string strDate = $"{_date:yyyyMMdd}.{module3}";
                UpdateTableSchema(strDate, _moduleDictionary[module3]);

                _dateModule[module3] = strDate;
            }
        }

        private bool MonitorData()
        {
            try
            {
                lock (_locker)
                {
                    if (_date != DateTime.Now.Date)
                    {
                        _date = DateTime.Now.Date;
                        MonitorDateTime();
                    }

                    string dateTime = DateTime.Now.Ticks.ToString();
                    foreach (string module in _modules)
                    {
                        string cmdText = $"INSERT INTO \"{_dateModule[module]}\" (\"time\" ";

                        _stringBuilder.Remove(0, _stringBuilder.Length);
                        _stringBuilder.Append("Values(");
                        _stringBuilder.Append(dateTime);

                        //没有数据则不处理
                        if (_moduleDictionary[module].Keys.Count == 0)
                        {
                            continue;
                        }

                        foreach (string key in _moduleDictionary[module].Keys)
                        {
                            cmdText += $",\"{key}\"";

                            _stringBuilder.Append(",");
                            object obj = _moduleDictionary[module][key]();
                            if (obj == null)
                            {
                                _stringBuilder.Append("0");
                            }
                            else
                            {
                                _stringBuilder.Append(obj.ToString());
                            }
                        }
                        cmdText += ")";
                        _stringBuilder.Append(");");

                        cmdText += _stringBuilder.ToString();

                        DB.InsertSql(cmdText);
                    }
                }

                return true;
            }
            catch (Exception ex)
            {
                LOG.Error(ex.Message, ex);
                return true;
            }
        }

        public void Terminate()
        {
            _monitorJob?.Stop();
            _monitorJob = null;
        }
    }
}