using Sarand.Net.Standard.Dbas.Data;
using Sarand.Net.Standard.Base.App;
using Sarand.Net.Standard.Base.Bus;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Dbas;
using Saxonite.Base.App;
using Saxonite.Net.Standard.Dbas.Bus;
using Saxonite.Net.Standard.Dbas.Internal;
using Saxonite.Net.Standard.Base.Bus;
using System;
using System.Collections.Generic;
using System.Data.Common;
using System.Text;
using Saxonite.Net.Standard.Base.App;
using System.Linq;
using Sarand.Net.Standard.Base.Utils;

namespace Saxonite.Net.Standard.Dbas.Mgr
{
	//=======================================================================
	partial class SaxAccountMgr_Dbas
	{
		//*******************************************************************
		// Account Mgr - User Session
		//*******************************************************************
		// Utilities.
		private List<StringPair> GetLogProperties(SaxUserSession userSession)
		{
			return new List<StringPair>()
			{
				new StringPair("UserAccountId",SysId.ToString(userSession.UserAccountId)),
			};
		}

		//-------------------------------------------------------------------
		// Create item.
		public override SaxUserSession CreateUserSession(SysId userAccountId)
		{
			ClearErrorState();
			return new SaxUserSession_Dbas(CoreDatabase, userAccountId, 0);
		}
		private SaxUserSession_Dbas CreateUserSession(UserSession_Db dbUserSession)
		{
			ClearErrorState();
			SaxUserSession_Dbas userSession = new SaxUserSession_Dbas(CoreDatabase, new SysId(dbUserSession._UserAccountId), (ushort)dbUserSession._Flags);
			PopulateFrom(dbUserSession, userSession);
			return userSession;
		}

		//-------------------------------------------------------------------
		// Get item.
		public override SaxUserSession GetUserSession(SaxUserSession.Params prm)
		{
			ClearErrorState();
			return GetUserSession(GetUserSessionQueryFilter(prm).Concat(" And ", "(", ")"));
		}
		private SaxUserSession GetUserSession(String filter)
		{
			ClearErrorState();
			long count = GetUserSessionCount(filter);
			if (count == 0) return null;
			if (count != 1)
			{
				SetErrorState("Multiple items found");
				return null;
			}
			SaxUserSession userSession = null;
			// Query data.
			using (var dbConnection = CoreDatabase.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					dbConnection.Open();
					UserSession_Db dbUserSession = new UserSession_Db(CoreDbInfo);
					dbUserSession.PopulateFrom(dbCommand, aliasUserSession, filter);
					userSession = CreateUserSession(dbUserSession);
				}
				catch (Exception exc)
				{
					SetErrorState("Database query exception");
					SaLogger.Warn(GetType().Name + ".GetUserSession\n\tQuery: " + dbCommand.CommandText + "\n\t" + ExceptionUtil.GetLogMessage(exc));
				}
			}
			return userSession;
		}

		//-------------------------------------------------------------------
		// Validate item.
		public override bool IsValidUserSessionData(SaxUserSession.Data data, SaxUserSession.ErrField errField)
		{
			ClearErrorState();
			if (!base.IsValidUserSessionData(data, errField)) return false;
			return true;
		}

		//-------------------------------------------------------------------
		// Insert item.
		public override bool InsertUserSession(SaxUserSession userSession, DbUpdateInfo dbUpdateInfo)
		{
			String fn = GetType().Name + ".InsertUserSession";
			ClearErrorState();
			if (!IsValidUserSession(userSession)) return false;
			if (SysId.IsValid(userSession.Id)) return SetErrorState(ErrorMessage.ValiditemId);
			using (var dbConnection = CoreDatabase.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					dbConnection.Open();
					UserSession_Db dbUserSession = new UserSession_Db(CoreDbInfo);
					PopulateTo(dbUserSession, userSession, dbUpdateInfo);
					if (UserSession_Db.FieldsNonId.Contains("Id"))
					{
						// Generate next Id.
						//dbUserSession._Id = CoreDatabase.GetNextIdFromTable("UserSession");
					}
					dbUserSession.ExecuteInsertCommand(dbCommand);
					//userSession.Id = new SysId(dbUserSession._Id);
					userSession.Changed = false;
					if (DebugMode) SaLogger.Debug(fn + " Inserted. " + GetLogProperties(userSession).Concat(": ").Concat("", "\n\t"));
				}
				catch (Exception exc) { SetErrorState(exc.Message); }
			}
			return !HasErrorState();
		}

		//-------------------------------------------------------------------
		// Update item.
		public override bool UpdateUserSession(SaxUserSession userSession, DbUpdateInfo dbUpdateInfo)
		{
			String fn = GetType().Name + ".UpdateUserSession";
			ClearErrorState();
			if (!IsValidUserSession(userSession)) return false;
			if (!SysId.IsValid(userSession.Id)) return SetErrorState(ErrorMessage.InvalidItemId);
			if (!userSession.Changed)
			{
				if (DebugMode) SaLogger.Debug(fn + " Data not changed. " + GetLogProperties(userSession).Concat(": ").Concat("", "\n\t"));
				return true;
			}
			using (var dbConnection = CoreDatabase.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					// Retrieve item.
					dbConnection.Open();
					UserSession_Db dbUserSession = new UserSession_Db(CoreDbInfo);
					dbUserSession.PopulateFrom(dbCommand, aliasUserSession, "UserAccountId=" + SysId.ToString(userSession.UserAccountId));
					// Update properties.
					PopulateTo(dbUserSession, userSession, dbUpdateInfo);
					dbUserSession.ExecuteUpdateCommand(dbCommand);
					userSession.Changed = false;
					if (DebugMode) SaLogger.Debug(fn + " Updated. " + GetLogProperties(userSession).Concat(": ").Concat("", "\n\t"));
				}
				catch (Exception exc) { SetErrorState(exc.Message); }
			}
			return !HasErrorState();
		}

		//-------------------------------------------------------------------
		// Delete item.
		public override bool UserSessionCanBeDeleted(SaxUserSession userSession)
		{
			ClearErrorState();
			if (!base.UserSessionCanBeDeleted(userSession)) return false;
			return true;
		}
		public override bool DeleteUserSession(SaxUserSession userSession, DbUpdateInfo dbUpdateInfo)
		{
			String fn = GetType().Name + ".DeleteUserSession";
			ClearErrorState();
			if (!UserSessionCanBeDeleted(userSession)) return false;
			using (var dbConnection = CoreDatabase.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					// Retrieve userSession.
					dbConnection.Open();
					UserSession_Db dbUserSession = new UserSession_Db(CoreDbInfo);
					dbUserSession.PopulateFrom(dbCommand, aliasUserSession, "UserAccountId=" + SysId.ToString(userSession.UserAccountId));
					// Delete userSession.
					dbCommand.CommandType = System.Data.CommandType.Text;
					dbCommand.CommandText = "DELETE FROM " + SaxDbDfn_Core.GetTableName(SaxDbDfn_Core.TableIdx.UserSession) + " WHERE UserAccountId=" + SysId.ToString(userSession.UserAccountId) + ";";
					dbCommand.ExecuteNonQuery();
					userSession.Changed = false;
					if (DebugMode) SaLogger.Debug(fn + " Deleted. " + GetLogProperties(userSession).Concat(": ").Concat("", "\n\t"));
				}
				catch (Exception exc) { SetErrorState(exc.Message); }
			}
			return !HasErrorState();
		}

		//-------------------------------------------------------------------
		// Copy data properties to and from database.
		private void PopulateTo(UserSession_Db dbUserSession, SaxUserSession userSession, DbUpdateInfo dbUpdateInfo)
		{
			dbUserSession._UserAccountId = SysId.ToInt(userSession.UserAccountId);
			dbUserSession._ActivityIndexIds= SysIdList.Concat(userSession.ActivityIndexIds, SaxUserSession.ActivityIndexDelim);
			dbUserSession._UserSessionData = userSession.UserSessionData;
			// Common.
			dbUserSession._Flags = (short)userSession.Flags;
			if (!DateUtil.IsValid(dbUserSession._CreateOn))
			{
				dbUserSession._CreateOn = DateTime.Now;
			}
			dbUserSession._UpdateOn = DateTime.Now;
		}
		private void PopulateFrom(UserSession_Db dbUserSession, SaxUserSession userSession)
		{
			//userSession.UserAccountId = new SysId(dbUserSession._UserAccountId);
			userSession.ActivityIndexIds = StringListUtil.Split(dbUserSession._ActivityIndexIds, SaxUserSession.ActivityIndexDelim).Select(item => item.ToSysId()).ToList();
			userSession.UserSessionData = dbUserSession._UserSessionData;
			// Common.
			userSession.SetCreateStamp(dbUserSession._CreateOn, new SysId(), "");
			userSession.SetUpdateStamp(dbUserSession._UpdateOn, new SysId(), "");
			userSession.AcceptChanges();
		}

		//-------------------------------------------------------------------
		// Item column definitions.
		private static readonly String aliasUserSession = "UsrSes";
		private static readonly String aliasUserSession_UserAccount = "UsrSes_Usr";
		private static readonly String prefixUserSession_UserAccount = "UsrSes_Usr_";
		private void SetUserSessionColDfn
			(ColumnDfn col, String caption, int width, SaxDbDfn_Core.ColumnIdx dbCol,
			ColumnAlignment align = ColumnAlignment.Default, DataValue.DataType dataType = DataValue.DataType.String,
			String alias = "", String prefix = "")
		{
			if (String.IsNullOrEmpty(alias) && SaxDbDfn_Core.GetTableForColumn(dbCol) == SaxDbDfn_Core.TableIdx.UserSession)
				alias = aliasUserSession;
			col.Set(caption, width, (int)dbCol, prefix + SaxDbDfn_Core.GetColumnName(dbCol, false), SaxDbDfn_Core.GetColumnNameQual(dbCol, alias), dataType, align);
			if (dataType == DataValue.DataType.String && dbCol != SaxDbDfn_Core.ColumnIdx.Unknown)
				col.MaxLength = (int)SaxDbDfn_Core.GetColTextLen(dbCol);
		}
		public override ColumnDfn GetUserSessionColumnDfn(SaxUserSession.Column columnId, string caption = "", int width = 0)
		{
			ColumnDfn columnDfn = new ColumnDfn((int)columnId, caption, width);
			switch (columnId)
			{
				//-----------------------------------------------------------
				case SaxUserSession.Column.Pos:
					SetUserSessionColDfn(columnDfn, "Pos", 60, SaxDbDfn_Core.ColumnIdx.Unknown, ColumnAlignment.Right);
					columnDfn.SortMode = ColumnDfn.ColumnSortMode.Off;
					columnDfn.ReadOnly = true;
					columnDfn.Resizable = false;
					break;
				case SaxUserSession.Column.UserAccountId:
					SetUserSessionColDfn(columnDfn, "User Id", 80, SaxDbDfn_Core.ColumnIdx.UserSession_UserAccountId, ColumnAlignment.Right, DataValue.DataType.Long);
					columnDfn.ReadOnly = true;
					break;

				//-------------------------------------------------------
				// User.
				case SaxUserSession.Column.User_EmailAddress:
					SetUserSessionColDfn(columnDfn, "Email address", 160, SaxDbDfn_Core.ColumnIdx.UserAccount_EmailAddress, ColumnAlignment.Left, DataValue.DataType.String, aliasUserSession_UserAccount, prefixUserSession_UserAccount);
					columnDfn.ReadOnly = true;
					break;
				case SaxUserSession.Column.User_DisplayName:
					SetUserSessionColDfn(columnDfn, "User", 160, SaxDbDfn_Core.ColumnIdx.Unknown, ColumnAlignment.Left, DataValue.DataType.String);
					columnDfn.ReadOnly = true;
					break;
				case SaxUserSession.Column.User_Title:
					SetUserSessionColDfn(columnDfn, "Title", 80, SaxDbDfn_Core.ColumnIdx.UserAccount_Title, ColumnAlignment.Left, DataValue.DataType.String, aliasUserSession_UserAccount, prefixUserSession_UserAccount);
					columnDfn.ReadOnly = true;
					break;
				case SaxUserSession.Column.User_FirstName:
					SetUserSessionColDfn(columnDfn, "First name", 120, SaxDbDfn_Core.ColumnIdx.UserAccount_FirstName, ColumnAlignment.Left, DataValue.DataType.String, aliasUserSession_UserAccount, prefixUserSession_UserAccount);
					columnDfn.ReadOnly = true;
					break;
				case SaxUserSession.Column.User_LastName:
					SetUserSessionColDfn(columnDfn, "Last name", 120, SaxDbDfn_Core.ColumnIdx.UserAccount_LastName, ColumnAlignment.Left, DataValue.DataType.String, aliasUserSession_UserAccount, prefixUserSession_UserAccount);
					columnDfn.ReadOnly = true;
					break;

				//-----------------------------------------------------------
				// Derived properties.

				//-----------------------------------------------------------
				// Common properties.
				case SaxUserSession.Column.Flags:
					SetUserSessionColDfn(columnDfn, "Flags", 60, SaxDbDfn_Core.ColumnIdx.UserSession_Flags, ColumnAlignment.Center, DataValue.DataType.Long);
					break;
				case SaxUserSession.Column.CreateOn_Date:
					SetUserSessionColDfn(columnDfn, "Created", 80, SaxDbDfn_Core.ColumnIdx.UserSession_CreateOn, ColumnAlignment.Center, DataValue.DataType.Date);
					columnDfn.ReadOnly = true;
					break;
				case SaxUserSession.Column.UpdateOn_Date:
					SetUserSessionColDfn(columnDfn, "Updated", 80, SaxDbDfn_Core.ColumnIdx.UserSession_UpdateOn, ColumnAlignment.Center, DataValue.DataType.Date);
					columnDfn.ReadOnly = true;
					break;
					//-----------------------------------------------------------
			}
			if (!String.IsNullOrEmpty(caption))
				columnDfn.Caption = caption;
			if (width > 0)
				columnDfn.Width = width;
			return columnDfn;
		}

		//-------------------------------------------------------------------
		// Item query filter.
		public override List<string> GetUserSessionQueryFilter(SaxUserSession.Params prm)
		{
			List<String> filter = new List<String>();

			// User accounts.
			String userAccountIdsIncluded = prm.UserAccountIdsIncluded.Concat(",");
			if (!userAccountIdsIncluded.IsEmpty())
				filter.Add(SaxDbDfn_Core.GetColumnNameQual(SaxDbDfn_Core.ColumnIdx.UserSession_UserAccountId, aliasUserSession) + " IN (" + userAccountIdsIncluded + ")");

			if (filter.Count < 1) filter.Add("1=1");
			return filter;
		}
		// Item sort columns.
		public List<String> GetUserSessionSortColumns(SaxUserSession.Params prm)
		{
			// Sort sequence:
			List<String> sortColumnNames = new List<String>();
			foreach (var columnDfn in prm.SortColumns)
			{
				// Need to ensure correct alias used for UserSession columns in case of conflict.
				String sortCol = String.Empty;
				if (SaxDbDfn_Core.GetTableForColumn((SaxDbDfn_Core.ColumnIdx)columnDfn.DbColumn) == SaxDbDfn_Core.TableIdx.UserSession)
				{
					sortCol = SaxDbDfn_Core.GetColumnNameQual((SaxDbDfn_Core.ColumnIdx)columnDfn.DbColumn, aliasUserSession);
				}
				else
				{
					sortCol = columnDfn.DataName;
					if (!StringUtil.IsEmpty(columnDfn.SortDataName))
						sortCol = columnDfn.SortDataName;
				}
				if (!sortCol.IsEmpty())
				{
					DbOrderByNullMode orderByNullMode = DbOrderByNullMode.Default; // eSaOrderByDemoteNulls, eSaOrderByPromoteNulls
					sortColumnNames.Add(DbQuery.FormatForOrderBy(sortCol, columnDfn.SortAscending, orderByNullMode).Concat(", "));
				}
			}
			sortColumnNames.RemoveBlanks();
			if (sortColumnNames.IsEmpty())
			{
				// Default sort columns.
				sortColumnNames.Add(SaxDbDfn_Core.GetColumnNameQual(SaxDbDfn_Core.ColumnIdx.UserSession_UserAccountId, aliasUserSession) + " ASC");
			}
			return sortColumnNames;
		}

		//-------------------------------------------------------------------
		// Item count.
		private long GetUserSessionCount(String filter)
		{
			ClearErrorState();
			return CoreDatabase.GetRowCount(SaxDbDfn_Core.GetTableName(SaxDbDfn_Core.TableIdx.UserSession) + " As " + aliasUserSession, filter);
		}
		public override long GetUserSessionCount(SaxUserSession.Params prm)
		{
			ClearErrorState();
			return GetUserSessionCount(GetUserSessionQueryFilter(prm).Concat(" AND ", "(", ")"));
		}

		//-------------------------------------------------------------------
		// Item list.
		public override List<SaxUserSession> GetUserSessionList(SaxUserSession.Params prm)
		{
			List<SaxUserSession> userSessions = new List<SaxUserSession>();
			DbQuery qry = new DbQuery(CoreDatabase.DbmsType);
			qry.Tables.Add(SaxDbDfn_Core.GetTableName(SaxDbDfn_Core.TableIdx.UserSession), aliasUserSession);
			UserSession_Db dbUserSession = new UserSession_Db(CoreDbInfo);
			qry.Columns.AddRange(dbUserSession.ExistingColumnNames);
			qry.Filters.AddRange(GetUserSessionQueryFilter(prm));
			qry.OrderBy.AddRange(GetUserSessionSortColumns(prm));
			// Query data.
			using (var dbConnection = CoreDatabase.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					dbConnection.Open();
					dbCommand.CommandText = qry.BuildQuery(prm.ResultsPaging);
					using (DbDataReader dbDataReader = dbCommand.ExecuteReader())
					{
						while (dbDataReader.Read())
						{
							dbUserSession = new UserSession_Db(CoreDbInfo);
							dbUserSession.PopulateFrom(dbDataReader);
							userSessions.Add(CreateUserSession(dbUserSession));
						}
					}
				}
				catch (Exception exc)
				{
					SaLogger.Warn(GetType().Name + ".GetUserSessionList\n\tQuery: " + dbCommand.CommandText + "\n\t" + ExceptionUtil.GetLogMessage(exc));
				}
			}
			return userSessions;
		}

		//-------------------------------------------------------------------
		// Item query execution.
		public override DbResultSet ExecuteUserSessionQuery(List<ColumnDfn> columns, SaxUserSession.Params prm)
		{
			ClearErrorState();

			//---------------------------------------------------------------------
			// Construct query.
			DbQuery query = new DbQuery(CoreDatabase.DbmsType);
			query.Tables.Add(SaxDbDfn_Core.GetTableName(SaxDbDfn_Core.TableIdx.UserSession), aliasUserSession);

			// Add columns as defined in query list.
			bool hasUserAccountCols = (columns.HasId(SaxUserSession.Column.User_EmailAddress) || columns.HasId(SaxUserSession.Column.User_DisplayName) || columns.HasId(SaxUserSession.Column.User_Title) || columns.HasId(SaxUserSession.Column.User_FirstName) || columns.HasId(SaxUserSession.Column.User_LastName));
			if (columns.HasId(SaxUserSession.Column.UserAccountId) || hasUserAccountCols)
				query.Columns.Add(SaxDbDfn_Core.GetColumnNameQual(SaxDbDfn_Core.ColumnIdx.UserSession_UserAccountId, aliasUserSession));
			// Common properties.
			if (columns.HasId(SaxUserSession.Column.Flags))
				query.Columns.Add(SaxDbDfn_Core.GetColumnNameQual(SaxDbDfn_Core.ColumnIdx.UserSession_Flags, aliasUserSession));
			if (columns.HasId(SaxUserSession.Column.CreateOn_Date))
				query.Columns.Add(SaxDbDfn_Core.GetColumnNameQual(SaxDbDfn_Core.ColumnIdx.UserSession_CreateOn, aliasUserSession));
			if (columns.HasId(SaxUserSession.Column.UpdateOn_Date))
				query.Columns.Add(SaxDbDfn_Core.GetColumnNameQual(SaxDbDfn_Core.ColumnIdx.UserSession_UpdateOn, aliasUserSession));

			//---------------------------------------------------------------------
			// User Account.
			if (hasUserAccountCols)
			{
				DbQueryJoin joinUserAccount = new DbQueryJoin(DbJoinType.LeftOuter);
				joinUserAccount.Table = new StringPair(SaxDbDfn_Core.GetTableName(SaxDbDfn_Core.TableIdx.UserAccount), aliasUserSession_UserAccount);
				joinUserAccount.Filters.Add(SaxDbDfn_Core.GetColumnNameQual(SaxDbDfn_Core.ColumnIdx.UserAccount_Id, aliasUserSession_UserAccount) + "=" + SaxDbDfn_Core.GetColumnNameQual(SaxDbDfn_Core.ColumnIdx.UserSession_UserAccountId, aliasUserSession));
				query.Joins.Add(joinUserAccount);
				List<SaxDbDfn_Core.ColumnIdx> cols = new List<SaxDbDfn_Core.ColumnIdx>();
				cols.Add(SaxDbDfn_Core.ColumnIdx.UserAccount_EmailAddress);
				cols.Add(SaxDbDfn_Core.ColumnIdx.UserAccount_Title);
				cols.Add(SaxDbDfn_Core.ColumnIdx.UserAccount_FirstName);
				cols.Add(SaxDbDfn_Core.ColumnIdx.UserAccount_LastName);
				foreach (var col in cols)
					query.Columns.Add(SaxDbDfn_Core.GetColumnNameQual(col, aliasUserSession_UserAccount), prefixUserSession_UserAccount + SaxDbDfn_Core.GetColumnName(col, false));
			}

			//---------------------------------------------------------------------
			// Populate filter.
			query.Filters.AddRange(GetUserSessionQueryFilter(prm));

			if (prm.UserAccountIdsIncluded.Count != 1)
			{
				// Configure sort sequence.
				foreach (String sortColumn in GetUserSessionSortColumns(prm))
					query.OrderBy.Add(sortColumn);
			}

			//---------------------------------------------------------------------
			//return new DbResultSet_DataTableReader(db, query.BuildQuery(prm.ResultsPaging));
			return DbResultSet_DataReader.ExecuteQuery(CoreDatabase, query.BuildQuery(prm.ResultsPaging));
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}