using System;
using System.Collections.Generic;
using Sarand.Net.Standard.Base.Bus;
using Sarand.Net.Standard.Base.Dbas;
using Sarand.Net.Standard.Base.UpdateLog;

namespace Sarand.Net.Standard.Dbas.UpdateLog
{
	//=======================================================================
	public abstract class SaUpdateLogConsole_Dbas : SaUpdateLogConsole
	{
		//-------------------------------------------------------------------
		// Data members.
		private SaUpdateLogMgr_Dbas updateLogMgr = null;

		//-------------------------------------------------------------------
		// Static initialisation.
		static SaUpdateLogConsole_Dbas ()
		{
		}

		//-------------------------------------------------------------------
		// Construction.
		protected SaUpdateLogConsole_Dbas (ISacsDatabase database)
		{
			Database = database;
			updateLogMgr = new SaUpdateLogMgr_Dbas(this);
		}
		protected override void Dispose(bool disposing)
		{
			if (disposing)
			{
				if (updateLogMgr != null) updateLogMgr.Dispose(); updateLogMgr = null;
			}
			base.Dispose(disposing);
		}

		//-------------------------------------------------------------------
		// Properties.
		internal ISacsDatabase Database { get; set; }
		public override bool DatabaseIsValid { get { return updateLogMgr.DatabaseIsValid; } }
		public override bool CanUpdateDatabase { get { return updateLogMgr.CanUpdateDatabase; } }

		//-------------------------------------------------------------------
		// Update Log form.
		public override bool ShowUpdateLogDialog (ShowUpdateLogConfig config)
		{
			ClearErrorState();
			if (ShowUpdateLogDialogFn != null)
				ShowUpdateLogDialogFn(this, config);
			return false;
		}
		// Method to display Update Log dialog.
		protected delegate bool ShowUpdateLogDialogFunction (SaUpdateLogConsole codeTypeConsole, ShowUpdateLogConfig config);
		protected abstract ShowUpdateLogDialogFunction ShowUpdateLogDialogFn { get; }

		//*******************************************************************
		//                U p d a t e   L o g   E n t r i e s
		//*******************************************************************
		// Log updates.
		public override bool LogUpdates (SaUpdateLogItemMonitor updateLogItemMonitor)
		{
			ClearErrorState();
			if (!updateLogMgr.LogUpdates(updateLogItemMonitor, updateLogItemMonitor.DbUpdateInfo))
				SetErrorState(updateLogMgr.ErrorStateMessage);
			return !HasErrorState();
		}

		//-------------------------------------------------------------------
		// Retrieve list of updates that match the specified params:
		public override bool ItemHasLogEntries (ItemId itemId)
		{
			ClearErrorState();
			SaUpdateLogEntry.Params prmUpdateLog = new SaUpdateLogEntry.Params();
			prmUpdateLog.IncludedItemIds.Add(itemId);
			return LogEntriesExist(prmUpdateLog);
		}
		public override bool LogEntriesExist (SaUpdateLogEntry.Params prmUpdateLog)
		{
			ClearErrorState();
			return (updateLogMgr.GetLogEntryCount(prmUpdateLog) > 0);
		}
		public override long GetLogEntryCount (SaUpdateLogEntry.Params prmUpdateLog)
		{
			ClearErrorState();
			return updateLogMgr.GetLogEntryCount(prmUpdateLog);
		}
		public override SaUpdateLogEntry GetLogEntry (ItemId itemId, String attrName, DateTime loggedAt)
		{
			ClearErrorState();
			return updateLogMgr.GetLogEntry(itemId, attrName, loggedAt);
		}
		public override List<SaUpdateLogEntry> GetLogEntries (SaUpdateLogEntry.Params prmUpdateLog)
		{
			ClearErrorState();
			return updateLogMgr.GetLogEntryList(prmUpdateLog);
		}

		//-------------------------------------------------------------------
		// Create a new item data.
		public override SaUpdateLogEntry CreateLogEntry (ItemId itemId, String attrName)
		{
			ClearErrorState();
			return updateLogMgr.CreateLogEntry(itemId, attrName);
		}

		//-------------------------------------------------------------------
		// Store item data.
		public override bool StoreLogEntry (SaUpdateLogEntry logEntry, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			if (updateLogMgr.LogEntryExists(logEntry))
			{
				if (!updateLogMgr.InsertLogEntry(logEntry, dbUpdateInfo))
					SetErrorState(updateLogMgr.ErrorStateMessage);
			}
			else
			{
				if (!updateLogMgr.UpdateLogEntry(logEntry, dbUpdateInfo))
					SetErrorState(updateLogMgr.ErrorStateMessage);
			}
			return !HasErrorState();
		}
		public override bool RemoveLogEntry (SaUpdateLogEntry logEntry, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			throw new NotSupportedException("Update Log Entries can not be removed");
		}
		public override bool ClearLogEntriesForItem (ItemId itemId, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			if (!updateLogMgr.ClearLogEntriesForItem(itemId, dbUpdateInfo))
				SetErrorState(updateLogMgr.ErrorStateMessage);
			return !HasErrorState ();
		}

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