using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Aitex.Core.RT.DBCore;
using System.Data;
using Aitex.Core.RT.Log;

namespace Aitex.Core.RT.Event
{
    class EventDBWriter
    {
        EventDB _db = new EventDB();

        public void Initialize()
        {
            Dictionary<string, Type> columns = new Dictionary<string,Type>();
            columns["ID"] = typeof(int);
            columns["EventEnum"] = typeof(string);
            columns["Type"] = typeof(string);
            columns["Source"] = typeof(string);
            columns["Description"] = typeof(string);
            columns["Level"] = typeof(string);
            columns["OccurTime"] = typeof(DateTime);

            DB.CreateTableIfNotExisted("EventManager", columns, true, "PID");
        }

        public void WriteEvent(EventItem ev)
        {
            string executeInsert = string.Format(
                    @"Insert into ""EventManager""(""ID"",""EventEnum"",""Type"",""Source"",""Description"",""Level"",""OccurTime"") values({0},'{1}','{2}','{3}','{4}','{5}','{6}')",
                    ev.Id, ev.EventEnum, ev.Type.ToString(), ev.Source, ev.Description.Replace("'", "''"), ev.Level.ToString(), ev.OccuringTime.ToString("yyyy-MM-dd HH:mm:ss.fff"));
            DB.Insert(executeInsert); 
        }

        public List<EventItem> QueryDBEvent(string sql)
        {
            List<EventItem> result = new List<EventItem>();

            DataSet ds = DB.ExecuteDataset(sql);
            if (ds == null)
                return result;

            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
            {
                EventItem ev = new EventItem();

                int id = 0;
                if (int.TryParse(ds.Tables[0].Rows[i]["ID"].ToString(), out id ))
                    ev.Id = id;

                EventType type = EventType.EventUI_Notify;
                if (Enum.TryParse<EventType>(ds.Tables[0].Rows[i]["Type"].ToString(), out type))
                    ev.Type = type;

                ev.Source = ds.Tables[0].Rows[i]["Source"].ToString();

                ev.EventEnum = ds.Tables[0].Rows[i]["EventEnum"].ToString();

                ev.Description = ds.Tables[0].Rows[i]["Description"].ToString();

                EventLevel level = EventLevel.Information;
                if (Enum.TryParse<EventLevel>(ds.Tables[0].Rows[i]["Level"].ToString(), out level))
                    ev.Level = level;

                var row = ds.Tables[0].Rows[i]["OccurTime"];
                if (row != null && !row.Equals(DBNull.Value))
                    ev.OccuringTime = ((DateTime)row);

                result.Add(ev);
            }

            return result;
        }
    }
}