using System.Collections.Concurrent;

namespace BaseOUDAL.EFExtensions
{
    /// <summary>
    /// Used to store table names
    /// </summary>
    // ReSharper disable once UnusedMember.Global
    public static class TableMapper
    {
        private static readonly ConcurrentDictionary<RuntimeTypeHandle, string> TableNames = new ConcurrentDictionary<RuntimeTypeHandle, string>();

        internal static string GetTableName(Type type)
        {
            if (TableNames.TryGetValue(type.TypeHandle, out var name))
            {
                return name;
            }

            var tableAttr = type.GetCustomAttributes(false).SingleOrDefault(attr => attr.GetType().Name == "TableAttribute") as dynamic;
            if (tableAttr != null)
            {
                name = tableAttr.Name;
            }
            else
            {
                name = type.IsInterface && type.Name.StartsWith("I")
                    ? type.Name.Substring(1)
                    : type.Name;
            }

            TableNames[type.TypeHandle] = name;
            return name;
        }
    }
}