using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Utils;
using System;

namespace Saxonite.Net.Standard.Base.Bus
{
	//=======================================================================
	/// <summary>Combines Common error-state behavior with Saxonite disposal behavior.</summary>
	public abstract class SaxDisposableStateItem : SacsDisposable
	{
		public enum ErrorMessage
		{
			DatabaseNotAvailable,
			DatabaseQueryException,
			ItemNotSpecified,
			ValidItemId,
			InvalidItemId,
			ItemIdNotSpecified,
			ItemTypeNotSpecified,
			InvalidItemSpecified,
			MultipleItemsFound,
			InvalidDate,
			InvalidStatus,
		}

		private SacsErrorState errorState;

		public bool OK { get { return !HasErrorState(); } }
		public bool HasErrorState() { return errorState != null; }
		public SacsErrorState ErrorState { get { return errorState; } }
		public String ErrorStateMessage { get { return errorState?.Message ?? String.Empty; } }

		public bool SetErrorState(String message)
		{
			if (StringUtil.IsBlank(message)) return false;
			errorState = new SacsErrorState(message);
			return false;
		}
		public void ClearErrorState() { errorState = null; }

		protected bool SetErrorState(ErrorMessage errorMessage) { return SetErrorState(GetErrorMessage(errorMessage)); }
		private String GetErrorMessage(ErrorMessage errorMessage)
		{
			return errorMessage switch
			{
				ErrorMessage.DatabaseNotAvailable => "Database is not available",
				ErrorMessage.DatabaseQueryException => "Database query exception",
				ErrorMessage.ItemNotSpecified => "Item not specified",
				ErrorMessage.ValidItemId => "Item has a valid id",
				ErrorMessage.InvalidItemId => "Invalid item id",
				ErrorMessage.ItemIdNotSpecified => "Item Id must be specified",
				ErrorMessage.ItemTypeNotSpecified => "Item type must be specified",
				ErrorMessage.InvalidItemSpecified => "Invalid item specified",
				ErrorMessage.MultipleItemsFound => "Multiple items found",
				ErrorMessage.InvalidDate => "Invalid date",
				ErrorMessage.InvalidStatus => "Invalid status",
				_ => errorMessage.ToString(),
			};
		}

		protected override void Dispose(bool disposing)
		{
		}
	}
	//=======================================================================
}