using DigitalData.Modules.Database;
using DigitalData.Modules.Interfaces;
using DigitalData.Modules.Config;
using Microsoft.Extensions.Configuration;
using System.Collections.Generic;
using System.Data;
using DigitalData.Modules.Logging;
using System;

namespace ZUGFeRDRESTService
{
    public class Database: IDatabase
    {
        private DigitalData.Modules.Logging.Logger _Logger = null;
        private string _gdPictureKey = null;
        private List<XmlItemProperty> _propertyMapList = null;
        private List<RejectionStringRow> _RejectionStringList = null;

        private LogConfig _logConfig = null;
        private string _connString;
        private string _GDPictureVersion;


        private const string QUERY_GET_GDPICTURE_KEY = "SELECT LICENSE FROM TBDD_3RD_PARTY_MODULES WHERE NAME = 'GDPICTURE'";
        private const string QUERY_GET_PROPERTY_MAP = "SELECT * FROM TBDD_ZUGFERD_XML_ITEMS WHERE ACTIVE = 1 ORDER BY XML_PATH";
        private const string QUERY_GET_REJECTION_MESSAGES = "SELECT * FROM TBDD_GUI_LANGUAGE_PHRASE WHERE CAPT_TYPE = 'RejectionCodeWeb'";

        public MSSQLServer MSSQL { get; set; }

        public Database(ILogging Logging, IConfiguration Config)
        {
            _logConfig = Logging.LogConfig;
            var oLogger = Logging.LogConfig.GetLogger();
            var oAppConfig = Config.GetSection("Config");
            _connString = oAppConfig["MSSQLConnectionString"];
            _GDPictureVersion = oAppConfig["GDPictureVersion"];

            oLogger.Debug("Establishing MSSQL Database connection..");
            MSSQL = new MSSQLServer(_logConfig, _connString);

            oLogger.Debug("MSSQL Connection: [{0}]", MSSQL.CurrentConnectionString);

            _Logger = oLogger;
        }

        public string GetGDPictureKey()
        {
            _gdPictureKey = ConfigDbFunct.GetProductLicense("GDPICTURE", _GDPictureVersion, _logConfig, _connString);

            return _gdPictureKey;
        }

        public List<XmlItemProperty> GetPropertyMapList()
        {
            if (_propertyMapList == null)
            {
                _Logger.Debug("Property map list does not exist, creating.");

                _propertyMapList = new List<XmlItemProperty>();
                var oDatatable = MSSQL.GetDatatable(QUERY_GET_PROPERTY_MAP);

                _Logger.Debug("Datatable Rows: [{0}]", oDatatable.Rows.Count);

                foreach (DataRow oRow in oDatatable.Rows)
                {
                    _propertyMapList.Add(new XmlItemProperty()
                    {
                        XMLPath = oRow["XML_PATH"].ToString(),
                        Description = oRow["DESCRIPTION"].ToString(),
                        TableName = oRow["TABLE_NAME"].ToString(),
                        TableColumn = oRow["TABLE_COLUMN"].ToString(),
                        GroupScope = oRow["GROUP_SCOPE"].ToString(),
                        IsRequired = (bool)oRow["IS_REQUIRED"],
                        IsGrouped = (bool)oRow["IS_GROUPED"],
                        Specification = oRow["SPECIFICATION"].ToString(),
                        ItemType = oRow["ITEM_TYPE"] != null ? Convert.ToInt32(oRow["ITEM_TYPE"]) : 0,
                        EN16931_ID = oRow["EN16931_ID"] != null ? oRow["EN16931_ID"].ToString() : "-"
                    });
                }
            }
            else
            {
                _Logger.Debug("Property map list already exists, returning.");
            }

            _Logger.Debug("Returning Property Map list with [{0}] entries.", _propertyMapList.Count);

            return _propertyMapList;
        }

        public List<RejectionStringRow> GetRejectionMessageList()
        {
            try
            {
                if (_RejectionStringList == null)
                {
                    var oDatatable = MSSQL.GetDatatable(QUERY_GET_REJECTION_MESSAGES);

                    _Logger.Debug("Datatable Rows: [{0}]", oDatatable.Rows.Count);
                    if (oDatatable != null && oDatatable.Rows.Count > 0)
                    {
                        _RejectionStringList = new List<RejectionStringRow>();
                        foreach (DataRow oRow in oDatatable.Rows)
                        {
                            var newRejectionItem = new RejectionStringRow
                            {
                                Title = oRow["Title"].ToString(),
                                ModuleName = oRow["Module"].ToString(),
                                Caption = oRow["CAPT_TYPE"].ToString(),
                                Language = oRow["Language"].ToString(),
                                String1 = oRow["String1"].ToString()
                            };
                            _RejectionStringList.Add(newRejectionItem);
                        }

                        _Logger.Debug("Returning Rejections messages list with [{0}] entries.", _RejectionStringList.Count);
                    }
                    else
                    {
                        _RejectionStringList = null;
                        _Logger.Warn("No Rejections messages found in Table TBDD_GUI_LANGUAGE_PHRASE with CAPT_TYPE = 'RejectionCodeWeb'!!!");
                    }
                }
                else
                {
                    _Logger.Debug("Rejections messages list already exists, returning list with [{0}] entries.", _RejectionStringList.Count);
                }
            }
            catch (Exception ex)
            {
                _RejectionStringList = null;
                _Logger.Error("Database Error: [{0}]", ex);
            }

            return _RejectionStringList;
        }
    }
}