using System;
using System.Collections.Generic;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Bus;
using Sarand.Net.Standard.Base.Dbas;
using Sarand.Net.Standard.Base.Interfaces;
using Sarand.Net.Standard.Dbas.Base;
using Sarand.Net.Standard.Base.Utils;

namespace Sarand.Net.Standard.Dbas.Interfaces
{
	//=======================================================================
	public abstract class SaInterfaceConsole_Dbas : SaInterfaceConsole
	{
		//-------------------------------------------------------------------
		// Data members.
		private SaInterfaceMgr_Dbas interfaceMgr = null;

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

		//-------------------------------------------------------------------
		// Construction.
		protected SaInterfaceConsole_Dbas (SacsDatabase database)
		{
			Database = database;
			interfaceMgr = new SaInterfaceMgr_Dbas(this);
		}
		protected override void Dispose(bool disposing)
		{
			if (disposing)
			{
				if (interfaceMgr != null) interfaceMgr.Dispose(); interfaceMgr = null;
			}
			base.Dispose(disposing);
		}

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

		//-------------------------------------------------------------------
		//                 M a n a g e   I n t e r f a c e s
		//-------------------------------------------------------------------
		// Manage interfaces - returns true if changes made.
		public override bool ManageInterfaces (String interfaceContext, bool userCanManageInterfaces, bool userCanProcessInterfaces, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			MaintainInterfacesFn?.Invoke(this, interfaceContext, userCanManageInterfaces, userCanProcessInterfaces, dbUpdateInfo);
			return false;
		}
		// Method to display Interface management dialog.
		protected delegate bool MaintainInterfacesFunction (SaInterfaceConsole codeTypeConsole, String interfaceContext, bool userCanManageInterfaces, bool userCanProcessInterfaces, DbUpdateInfo dbUpdateInfo);
		protected abstract MaintainInterfacesFunction MaintainInterfacesFn { get; }

		//-------------------------------------------------------------------
		//              I n t e r f a c e   M a n a g e m e n t
		//-------------------------------------------------------------------
		// Interface management.
		public override SysId CreateInterface (String context, SaInterfaceCategory interfaceCategory, short interfaceType, String code, String caption, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			SaInterface interfaceObj = interfaceMgr.CreateInterface(context,interfaceCategory,interfaceType);
			interfaceObj.Code = code;
			interfaceObj.Caption = caption;
			if (!interfaceMgr.InsertInterface(interfaceObj,dbUpdateInfo))
			{
				SetErrorState(interfaceMgr.ErrorStateMessage);
				return null;
			}
			return interfaceObj.Id;
		}
		// Clear configuration options, data items, processes etc.
		public override bool ClearDependentData (SaInterface interfaceObj, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			throw new NotImplementedException();
			//return !HasErrorState();
		}

		//---------------------------------------------------------------
		// Retrieve interfaces.
		public override SaInterface GetInterface (SaInterface.Params prmInterface)
		{
			return interfaceMgr.GetInterface(prmInterface);
		}
		public override SaInterface GetInterfaceById (SysId interfaceId)
		{
			return interfaceMgr.GetInterfaceById(interfaceId);
		}
		public override List<SaInterface> GetInterfaceList (SaInterface.Params prmInterface)
		{
			return interfaceMgr.GetInterfaceList(prmInterface);
		}

		//---------------------------------------------------------------
		// Conversion between Interface Category & Type and the equivalent database Id (if only one exists).
		public override SysId GetInterfaceIdForContextCategoryType (String context, SaInterfaceCategory interfaceCategory, short interfaceType)
		{
			ClearErrorState();
			SaInterface.Params prmInterface = new SaInterface.Params();
			prmInterface.Context = context;
			prmInterface.InterfaceCategory = interfaceCategory;
			prmInterface.IncludedInterfaceTypes.Add(interfaceType);
			prmInterface.ActiveOnly = false;
			prmInterface.StatusCat = SaInterface.StatusCat.Any;
			SaInterface interfaceObj = interfaceMgr.GetInterface(prmInterface);
			if (interfaceObj != null)
				return interfaceObj.Id;
			return null;
		}
		// Conversion between Interface Category & Code and the equivalent database Id (if only one exists).
		public override SysId GetInterfaceIdForContextCategoryCode (String context, SaInterfaceCategory interfaceCategory, String code)
		{
			ClearErrorState();
			SaInterface.Params prmInterface = new SaInterface.Params();
			prmInterface.Context = context;
			prmInterface.InterfaceCategory = interfaceCategory;
			prmInterface.Code = code;
			prmInterface.ActiveOnly = false;
			prmInterface.StatusCat = SaInterface.StatusCat.Any;
			SaInterface interfaceObj = interfaceMgr.GetInterface(prmInterface);
			if (interfaceObj != null)
				return interfaceObj.Id;
			return null;
		}
		public override SaInterfaceCategory GetCategoryForInterfaceId (SysId interfaceId)
		{
			SaInterface interfaceObj = interfaceMgr.GetInterfaceById(interfaceId);
			if (interfaceObj != null)
				return interfaceObj.Category;
			return SaInterfaceCategory.Unknown;
		}
		public override String GetCodeForInterfaceId (SysId interfaceId)
		{
			SaInterface interfaceObj = interfaceMgr.GetInterfaceById(interfaceId);
			if (interfaceObj != null)
				return interfaceObj.Code;
			return String.Empty;
		}

		//---------------------------------------------------------------
		//             I n t e r f a c e   P r o c e s s e s
		//---------------------------------------------------------------
		// Identify the highest sequence currently in use for an interface.
		public override int GetMaxProcessSequence (SysId interfaceId, SaInterfaceProcessDirection processDirection, bool completedOnly = true)
		{
			ClearErrorState();
			int sequence = interfaceMgr.GetMaxProcessSequenceForInterface(interfaceId, processDirection);
			if (interfaceMgr.HasErrorState())
				SetErrorState(interfaceMgr.ErrorStateMessage);
			return sequence;
		}

		//---------------------------------------------------------------
		// Create new process and imediately store details on database (status set to 'In Progress').
		public override SaInterfaceProcess StartInterfaceProcess (SysId interfaceId, SaInterfaceProcessDirection eDirection, String batchRef, DateTime batchAt, int sequence, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			if (!interfaceMgr.InterfaceExistsById(interfaceId))
			{
				SetErrorState("Unable to create process - interface does not exist");
				return null;
			}
			SaInterfaceProcess interfaceProcess = interfaceMgr.CreateInterfaceProcess(interfaceId, eDirection, batchRef, sequence);
			interfaceProcess.ProcessAt = DateTime.Now;
			interfaceProcess.BatchAt = batchAt;
			interfaceProcess.Status = SaStatus.InProgress;
			if (!interfaceMgr.InsertInterfaceProcess(interfaceProcess,dbUpdateInfo))
			{
				interfaceProcess = null;
				SetErrorState(interfaceMgr.ErrorStateMessage);
			}
			return interfaceProcess;
		}

		//---------------------------------------------------------------
		// Retrieve a process using its identity (restricted by interface).
		public override SaInterfaceProcess GetInterfaceProcess (SysId interfaceId, SysId interfaceProcessId)
		{
			ClearErrorState();
			SaInterfaceProcess interfaceProcess = interfaceMgr.GetInterfaceProcessById(interfaceProcessId);
			if (interfaceMgr.HasErrorState())
			{
				SetErrorState(interfaceMgr.ErrorStateMessage);
				interfaceProcess = null;
			}
			if (interfaceProcess != null && !interfaceProcess.InterfaceId.Equals(interfaceId))
			{
				SetErrorState("Process does not match interface");
				interfaceProcess = null;
			}
			return interfaceProcess;
		}

		//---------------------------------------------------------------
		// Update the details for a process.
		public override bool StoreInterfaceProcess (SaInterfaceProcess interfaceProcess, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			if (!SysId.IsValid(interfaceProcess.Id))
			{
				// Insert interface process.
				if (!interfaceMgr.InsertInterfaceProcess(interfaceProcess, dbUpdateInfo))
					return SetErrorState("Failed to insert process - "+interfaceMgr.ErrorStateMessage);
			}
			else
			{
				// Update interface process.
				if (!interfaceMgr.UpdateInterfaceProcess(interfaceProcess, dbUpdateInfo))
					return SetErrorState("Failed to update process - " + interfaceMgr.ErrorStateMessage);
			}
			return !HasErrorState();
		}

		//---------------------------------------------------------------
		//      I n t e r f a c e   P r o c e s s   M e s s a g e s
		//---------------------------------------------------------------
		public override bool LogInterfaceProcessMessage (SysId interfaceProcessId, DbUpdateInfo dbUpdateInfo, String message, SaMessageLevel messageLevel = SaMessageLevel.Info, String filename = "", int lineNumber = 0, ItemId itemId = null)
		{
			ClearErrorState();
			if (!interfaceMgr.InterfaceProcessExistsById(interfaceProcessId)) return SetErrorState("Invalid interface process id supplied");
			if (StringUtil.IsEmpty(message)) return true;

			// Create and store process message.
			SaInterfaceProcessMessage interfaceProcessMessage = interfaceMgr.CreateInterfaceProcessMessage(interfaceProcessId);
			interfaceProcessMessage.Message = message;
			interfaceProcessMessage.Level = messageLevel;
			interfaceProcessMessage.Filename = filename;
			interfaceProcessMessage.LineNumber = lineNumber;
			interfaceProcessMessage.ItemId = itemId;
			if (!interfaceMgr.InsertInterfaceProcessMessage(interfaceProcessMessage, dbUpdateInfo))
				return SetErrorState(interfaceMgr.ErrorStateMessage);

			return !HasErrorState();
		}

		//---------------------------------------------------------------
		//            I n t e r f a c e   D a t a   I t e m s
		//---------------------------------------------------------------
		public override bool ItemHasDataItems (ItemId itemId)
		{
			ClearErrorState();
			SaInterfaceDataItem.Params prmInterfaceDataItem = new SaInterfaceDataItem.Params();
			prmInterfaceDataItem.IncludedItemIds.Add(itemId);
			return (interfaceMgr.GetInterfaceDataItemCount(prmInterfaceDataItem) > 0);
		}
		public override bool InterfaceDataItemExistsByRef (SysId interfaceId, SaInterfaceProcessDirection processDirection, short itemType, String externalReference)
		{
			ClearErrorState();
			SaInterfaceDataItem.Params prmInterfaceDataItem = new SaInterfaceDataItem.Params();
			prmInterfaceDataItem.InterfaceId = interfaceId;
			prmInterfaceDataItem.Direction = processDirection;
			prmInterfaceDataItem.ItemType = itemType;
			prmInterfaceDataItem.ExternalReference = externalReference;
			return (interfaceMgr.GetInterfaceDataItemCount(prmInterfaceDataItem) > 0);
		}
		public override SaInterfaceDataItem CreateInterfaceDataItem (SysId interfaceId, SaInterfaceProcessDirection processDirection, ItemId itemId, String externalReference)
		{
			ClearErrorState();
			return interfaceMgr.CreateInterfaceDataItem(interfaceId, processDirection, itemId, externalReference);
		}
		public override SaInterfaceDataItem GetInterfaceDataItem (SysId interfaceDataItemId)
		{
			ClearErrorState();
			return interfaceMgr.GetInterfaceDataItemById(interfaceDataItemId);
		}
		public override SaInterfaceDataItem GetInterfaceDataItemByItemRef (SysId interfaceId, SaInterfaceProcessDirection processDirection, ItemId itemId, String externalReference)
		{
			ClearErrorState();
			SaInterfaceDataItem.Params prmInterfaceDataItem = new SaInterfaceDataItem.Params();
			prmInterfaceDataItem.InterfaceId = interfaceId;
			prmInterfaceDataItem.Direction = processDirection;
			prmInterfaceDataItem.IncludedItemIds.Add(itemId);
			prmInterfaceDataItem.ExternalReference = externalReference;
			return interfaceMgr.GetInterfaceDataItem(prmInterfaceDataItem);
		}
		public override SaInterfaceDataItem GetInterfaceDataItemByRef (SysId interfaceId, SaInterfaceProcessDirection processDirection, short itemType, String externalReference)
		{
			// Fails if more than 1 matching data item.
			ClearErrorState();
			SaInterfaceDataItem.Params prmInterfaceDataItem = new SaInterfaceDataItem.Params();
			prmInterfaceDataItem.InterfaceId = interfaceId;
			prmInterfaceDataItem.Direction = processDirection;
			prmInterfaceDataItem.ItemType = itemType;
			prmInterfaceDataItem.ExternalReference = externalReference;
			return interfaceMgr.GetInterfaceDataItem(prmInterfaceDataItem);
		}
		public override SaInterfaceDataItem GetInterfaceDataItemByItem (SysId interfaceId, SaInterfaceProcessDirection processDirection, ItemId itemId)
		{
			// Fails if more than 1 matching data item.
			ClearErrorState();
			SaInterfaceDataItem.Params prmInterfaceDataItem = new SaInterfaceDataItem.Params();
			prmInterfaceDataItem.InterfaceId = interfaceId;
			prmInterfaceDataItem.Direction = processDirection;
			prmInterfaceDataItem.IncludedItemIds.Add(itemId);
			return interfaceMgr.GetInterfaceDataItem(prmInterfaceDataItem);
		}
		public override List<SaInterfaceDataItem> GetInterfaceDataItemsByItem (SysId interfaceId, SaInterfaceProcessDirection processDirection, ItemId itemId)
		{
			ClearErrorState();
			SaInterfaceDataItem.Params prmInterfaceDataItem = new SaInterfaceDataItem.Params();
			prmInterfaceDataItem.InterfaceId = interfaceId;
			prmInterfaceDataItem.Direction = processDirection;
			prmInterfaceDataItem.IncludedItemIds.Add(itemId);
			return interfaceMgr.GetInterfaceDataItemList(prmInterfaceDataItem);
		}
		public override List<SaInterfaceDataItem> GetInterfaceDataItemsByRef (SysId interfaceId, SaInterfaceProcessDirection processDirection, short itemType, String externalReference)
		{
			ClearErrorState();
			SaInterfaceDataItem.Params prmInterfaceDataItem = new SaInterfaceDataItem.Params();
			prmInterfaceDataItem.InterfaceId = interfaceId;
			prmInterfaceDataItem.Direction = processDirection;
			prmInterfaceDataItem.ItemType = itemType;
			prmInterfaceDataItem.ExternalReference = externalReference;
			return interfaceMgr.GetInterfaceDataItemList(prmInterfaceDataItem);
		}
		public override bool StoreInterfaceDataItem (SaInterfaceDataItem interfaceDataItem, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			if (interfaceDataItem == null) return SetErrorState("data item must be supplied");
			if (!SysId.IsValid(interfaceDataItem.Id))
			{
				if (!interfaceMgr.InsertInterfaceDataItem(interfaceDataItem, dbUpdateInfo))
					return SetErrorState(interfaceMgr.ErrorStateMessage);
			}
			else
			{
				if (!interfaceMgr.UpdateInterfaceDataItem(interfaceDataItem, dbUpdateInfo))
					return SetErrorState(interfaceMgr.ErrorStateMessage);
			}
			return true;
		}
		public override bool StoreInterfaceDataItems (List<SaInterfaceDataItem> interfaceDataItems, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			foreach (SaInterfaceDataItem interfaceDataItem in interfaceDataItems)
			{
				StoreInterfaceDataItem(interfaceDataItem, dbUpdateInfo);
				if (HasErrorState()) return false;
			}
			return true;
		}
		public override bool ClearInterfaceDataItem (SaInterfaceDataItem interfaceDataItem, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			if (!interfaceMgr.DeleteInterfaceDataItem(interfaceDataItem, dbUpdateInfo))
				return SetErrorState(interfaceMgr.ErrorStateMessage);
			return true;
		}
		public override bool ClearInterfaceDataItems (ItemId itemId, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			SaInterfaceDataItem.Params prmInterfaceDataItem = new SaInterfaceDataItem.Params();
			prmInterfaceDataItem.IncludedItemIds.Add(itemId);
			foreach (SaInterfaceDataItem interfaceDataItem in interfaceMgr.GetInterfaceDataItemList(prmInterfaceDataItem))
			{
				if (!ClearInterfaceDataItem(interfaceDataItem, dbUpdateInfo))
					return SetErrorState(interfaceMgr.ErrorStateMessage);
			}
			return true;
		}

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