using System;
using System.Collections.Generic;
using System.Linq;

namespace JustFF
{
    class Program
    {
        /// <summary>
        /// Assigned permissions
        /// </summary>
        internal static List<string> assigned
        {
            get { return (new string[] { "Value1", "Value4", "Value5" }).ToList(); }
        }

        static void Main(string[] args)
        {
            // Read all available permissions from class metadata, 
            // and fill list with all permissions and flag if they are assigned
            var test = typeof(Permissions).GetFields()
                        .Where(pi => pi.IsStatic && pi.IsPublic)
                        .Select(pi => new TestPermission()
                        {
                            Value = pi.GetValue(null).ToString(),
                            IsAssigned = HasPermission(pi.GetValue(null).ToString())
                        });

            foreach (var permission in test)
            {
                Console.WriteLine(String.Format("Permission: '{0}' assigned={1}", 
                    permission.Value, permission.IsAssigned));
            }

            Console.ReadKey();
        }

        public static bool HasPermission(params string[] permission)
        {
            return permission.Intersect(assigned, StringComparer.InvariantCultureIgnoreCase)
                             .Any();
        }
    }

    /// <summary>
    /// Permission constants
    /// </summary>
    public static class Permissions
    {
        public const string PERMISSION1 = "Value1";
        public const string PERMISSION2 = "Value2";
        public const string PERMISSION3 = "Value3";
        public const string PERMISSION4 = "Value4"; 
        public const string PERMISSION5 = "Value5";
        public const string PERMISSION6 = "Value6";
    }

    /// <summary>
    /// Class to capture data
    /// </summary>
    public class TestPermission
    {
        public string Value { get; set; }
        public bool IsAssigned { get; set; }
    }
}