using Sarand.BusinessMgr.Net.Core.Web.App;
using Sarand.BusinessMgr.Net.Standard.Base.App;
using Sarand.Net.Standard.Base.App;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Dbas;
using Sarand.Net.Standard.Base.Security;
using Sarand.Net.Standard.Base.Utils;
using Sarand.Net.Standard.Dbas.Data;
using System;
using System.Collections.Generic;
using System.Text;

namespace Sarand.BusinessMgr.Net.Core.Web.Helpers
{
	//=======================================================================
	// Session Context utility functions.
	//=======================================================================
	public static class SbmSessionContextHelper_Web
	{
		//-------------------------------------------------------------------
		// Data members.
		private static String className = typeof(SbmSessionContextHelper_Web).Name;

		//-------------------------------------------------------------------
		// Session Contexts.
		//-------------------------------------------------------------------
		public static SbmSessionContext GetSessionContext (ushort idx)
		{
			SbmApplication_Web app = SbmGlobals_Web.Application;
			return app.GetSessionContext(idx);
		}

		//-------------------------------------------------------------------
		// Session Contexts for User Email Address
		//-------------------------------------------------------------------
		/// <summary>
		/// Identify the session context that corresponds with the BusinessMgr
		/// database for the specified user by email address.
		/// </summary>
		public static List<ushort> GetSessionContextIdxsForUsersBusMgrDatabase(String emailAddress)
		{
			String fn = className + ".GetSessionContextIdxForUsersBusMgrDatabase";
			String alias_SecurityItem = "SecItm";
			String alias_Affiliate = "Affil";
			List<ushort> sessionContextIdxs = new List<ushort>();
			if (StringUtil.IsEmpty(emailAddress)) return sessionContextIdxs;

			// Get the session context indices defined by the application.
			SbmApplication_Web app = SbmGlobals_Web.Application;
			foreach (ushort sessionContextIdx in app.GetSessionContextIdxs())
			{
				// Retrieve the session context.
				SbmSessionContext sessionContext = app.GetSessionContext(sessionContextIdx);
				if (sessionContext == null)
				{
					SaLogger.Warn(fn + " Failed to retrieve SessionContext for idx: " + sessionContextIdx);
					continue;
				}
				// Retrieve the BusinessMgr database.
				ISacsDatabase db = app.GetBusMgrDatabase(sessionContext);
				if (db == null)
				{
					SaLogger.Warn(fn + " Failed to retrieve SessionContext for idx: " + sessionContextIdx);
					continue;
				}

				// Query to check for Security Item matching the email with associated Affiliate.
				// NB This is done independently for each database in case there are different
				// DBMSs involved with different value formatting or syntax rules.
				DbQuery qry = new DbQuery(db.DbmsType);
				qry.Tables.Add(SaSecurityDbDfn.GetTableName(SaSecurityDbDfn.TableIdx.SaSecItem), alias_SecurityItem);
				qry.Columns.Add(SaSecurityDbDfn.GetColumnNameQual(SaSecurityDbDfn.ColumnIdx.SaSecItem_Id, alias_SecurityItem));
				qry.Filters.Add(SaSecurityDbDfn.GetColumnNameQual(SaSecurityDbDfn.ColumnIdx.SaSecItem_EmailAddress, alias_SecurityItem) + "='" + DbQuery.FormatForCondition(emailAddress) + "'");
				// Join to the Affiliate table.
				DbQueryJoin joinAffiliate = new DbQueryJoin(DbJoinType.FullOuter);
				joinAffiliate.Table = new StringPair(SbmDbDfn.GetTableName(SbmDbDfn.TableIdx.Affiliate), alias_Affiliate);
				joinAffiliate.Filters.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.Affiliate_UserId, alias_Affiliate) + "=" + SaSecurityDbDfn.GetColumnNameQual(SaSecurityDbDfn.ColumnIdx.SaSecItem_Id, alias_SecurityItem));

				// Execute query.
				using (DbResultSet resultSet = DbResultSet_DataReader.ExecuteQuery(db, qry.BuildQuery()))
				{
					if (resultSet != null && resultSet.NextRecord())
						sessionContextIdxs.Add(sessionContextIdx);
				}
			}
			return sessionContextIdxs;
		}

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