using System;
using System.Collections.Generic;
using System.Data;
using System.Data.OleDb;
using System.Linq;
using System.Xml;
using DTS.Common.Enums.DBExport;
using DTS.Common.Storage;
using DTS.Common.Utilities.Logging;

namespace DTS.Common.ISO
{
    public class MMEFilterClasses : AbstractOLEDbWrapper
    {
        public string S_GUID { get; }

        public string Filter_Class { get; }

        public string Text_L1 { get; }

        public string Text_L2 { get; }

        public long Version { get; }

        public DateTime Date { get; }

        public string Remarks { get; }

        public bool Expired { get; }

        public string SortKey { get; }

        public DateTime Last_Change { get; }

        public string Last_Change_Text { get; }

        public string History { get; }

        public MMEPossibleChannels.MMEChannelTypes RecordType { get; } = MMEPossibleChannels.MMEChannelTypes.ISO13499_106;

        public static MMEFilterClasses ReadXML(XmlElement node)
        {
            string sGuid = "", filterClass = "", textL1 = "", textL2 = "", remarks = "", sortKey = "", lastChangeText = "", history = "";
            long version = 0;
            DateTime date = DateTime.Now, lastChange = DateTime.Now;
            var bExpired = false;

            var fields = Enum.GetValues(typeof(CustomFilterFields)).Cast<CustomFilterFields>().ToArray();
            foreach (var field in fields)
            {
                switch (field)
                {
                    case CustomFilterFields.Date:
                        date = DateTime.Parse(node.GetAttribute(field.ToString()), System.Globalization.CultureInfo.InvariantCulture);
                        break;
                    case CustomFilterFields.Expired:
                        bExpired = Convert.ToBoolean(node.GetAttribute(field.ToString()));
                        break;
                    case CustomFilterFields.Filter_Class:
                        filterClass = node.GetAttribute(field.ToString());
                        break;
                    case CustomFilterFields.History:
                        history = node.GetAttribute(field.ToString());
                        break;
                    case CustomFilterFields.Last_Change:
                        lastChange = DateTime.Parse(node.GetAttribute(field.ToString()), System.Globalization.CultureInfo.InvariantCulture);
                        break;
                    case CustomFilterFields.Last_Change_Text:
                        lastChangeText = node.GetAttribute(field.ToString());
                        break;
                    case CustomFilterFields.Remarks:
                        remarks = node.GetAttribute(field.ToString());
                        break;
                    case CustomFilterFields.S_GUID:
                        sGuid = node.GetAttribute(field.ToString());
                        break;
                    case CustomFilterFields.SortKey:
                        sortKey = node.GetAttribute(field.ToString());
                        break;
                    case CustomFilterFields.Text_L1:
                        textL1 = node.GetAttribute(field.ToString());
                        break;
                    case CustomFilterFields.Text_L2:
                        textL2 = node.GetAttribute(field.ToString());
                        break;
                    case CustomFilterFields.Version:
                        version = long.Parse(node.GetAttribute(field.ToString()), System.Globalization.CultureInfo.InvariantCulture);
                        break;
                    default:
                        throw new NotSupportedException("ImportTestSetup::ImportCustomFilterClasses unknown field: " + field);
                }
            }
            return new MMEFilterClasses(sGuid, filterClass, textL1, textL2, version, date, remarks, bExpired, sortKey,
                lastChange, lastChangeText, history, MMEPossibleChannels.MMEChannelTypes.SQL);
        }

        public MMEFilterClasses(string sGuid, string filterClass, string textL1, string textL2, long version,
            DateTime date, string remarks, bool bExpired, string sortKey, DateTime lastChange, string lastChangeText, string history,
            MMEPossibleChannels.MMEChannelTypes type)
        {
            RecordType = type;
            S_GUID = sGuid;
            Filter_Class = filterClass;
            Text_L1 = textL1;
            Text_L2 = textL2;
            Version = version;
            Date = date;
            Remarks = remarks;
            Expired = bExpired;
            SortKey = sortKey;
            Last_Change = lastChange;
            Last_Change_Text = lastChangeText;
            History = history;
        }

        public static MMEFilterClasses[] GetFilterClasses()
        {
            var filterClasses = new List<MMEFilterClasses>();

            using (var cmd = DbOperations.GetISOCommand())
            {
                cmd.CommandType = CommandType.Text;
                cmd.CommandText = "SELECT * FROM MMEFilterClasses";

                try
                {
                    using (var ISOReader = cmd.ExecuteReader())
                    {
                        while (ISOReader.Read())
                        {
                            try
                            {
                                string sGuid = ISOReader["s_GUID"].ToString();
                                string filterClass = ISOReader["FILTER_CLASS"].ToString();
                                string textL1 = ISOReader["TEXT_L1"].ToString();
                                string textL2 = ISOReader["TEXT_L2"].ToString();
                                long version = Convert.ToInt64(ISOReader["VERSION"]);
                                DateTime date = (DateTime)ISOReader["DATE"];
                                string remarks = ISOReader["REMARKS"].ToString();
                                bool expired = (bool)ISOReader["EXPIRED"];
                                string sortkey = ISOReader["SORTKEY"].ToString();
                                DateTime lastChange = GetDate(ISOReader, "LAST_CHANGE");
                                string lastChangeText = ISOReader["LAST_CHANGE_TEXT"].ToString();
                                string history = ISOReader["HISTORY"].ToString();
                                filterClasses.Add(new MMEFilterClasses(sGuid, filterClass, textL1, textL2, version,
                                    date, remarks, expired,
                                    sortkey, lastChange, lastChangeText, history,
                                    MMEPossibleChannels.MMEChannelTypes.ISO13499_106));
                            }
                            catch (Exception ex)
                            {
                                APILogger.Log("Failed to process filter classes ", ex);
                            }
                        }
                    }
                }
                finally
                {
                    cmd.Connection.Dispose();
                }
            }
            return filterClasses.ToArray();
        }

        public override string ToString()
        {
            return Text_L1;
        }
    }
}