/JTacticalSim.DataContext/Utility.cs

using System;

using System.Collections.Generic;

using System.Configuration;

using System.Linq;

using System.Reflection;

using System.Xml.Linq;

using JTacticalSim.API;

using JTacticalSim.API.Game;

using JTacticalSim.API.Component;





namespace JTacticalSim.DataContext

{

	public static class Utility

	{

		public static IGame TheGame = Game.Instance;

		public static DataFactory DataFactory = DataFactory.Instance;



		public static DataSourceType GetDataSourceType()

		{

			var dataSourceType = ConfigurationManager.AppSettings["datasourcetype"];



			switch (dataSourceType)

			{

				case "memory":

					return DataSourceType.MEMORY;

				case "rdbms":

					return DataSourceType.SQL;

				case "XML":

					return DataSourceType.XML;

				default:

					return DataSourceType.UNKNOWN;

			}

		}



		public static Type GetDataFileType()

		{

			switch (GetDataSourceType())

			{

				case DataSourceType.XML:

					return typeof(XDocument);

				default:

					throw new Exception("DataSourceType not configured or configured type is not a file type");

			}

		}



		/// <summary>

		/// Returns all context table objects with the TableRecognizable attribute

		/// </summary>

		/// <returns></returns>

		public static IEnumerable<KeyValuePair<Type, Tuple<Type, object>>> GetAllTableInfos()

		{

			var tables = new Dictionary<Type, Tuple<Type, object>>();



			using (var ctx = DataFactory.GetDataContext())

			{

				PropertyInfo[] props = typeof(BaseDataContext).GetProperties();



				foreach (PropertyInfo p in props)

				{

					var attr = Attribute.GetCustomAttribute(p, typeof(TableRecognizable), false) as TableRecognizable;

					if (attr == null) continue;

					tables.Add(attr.RecordType, new Tuple<Type, object>(p.PropertyType.GetGenericArguments().First(), 

																				p.GetValue(ctx, null)));

				}

			}



			return tables;

		}



		/// <summary>

		/// Returns tableInfo object for given type

		/// </summary>

		/// <returns></returns>

		public static object GetComponentTable(IBaseComponent component)

		{

			return GetAllTableInfos().SingleOrDefault(ti => component.GetType().GetInterfaces().Contains(ti.Key)).Value.Item2;

		}



		/// <summary>

		/// Returns tableInfo object for given type

		/// </summary>

		/// <returns></returns>

		public static object GetComponentTable(Type type)

		{

			return GetAllTableInfos().SingleOrDefault(ti => ti.Key.Equals(type)).Value.Item2;

		}



	}

}