Solutionn10.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 

namespace cSharpSolutions
{
    internal class Solutionn10
    {
        [Flags]
        public enum FilePermissions
        {
            None = 0,
            Read = 1,
            Write = 2,
            Execute = 4,
            Delete = 8,
            FullControl = Read | Write | Execute | Delete
        }

        private class FileAccessManager
        {
            public static FilePermissions Grant(FilePermissions current, FilePermissions toGrant) => current | toGrant;
            public static FilePermissions Revoke(FilePermissions current, FilePermissions toRevoke) => current & ~toRevoke;
            public static bool HasPermission(FilePermissions current, FilePermissions toCheck) => (current & toCheck) == toCheck;
            public static FilePermissions Toggle(FilePermissions current, FilePermissions toToggle) => current ^ toToggle;
            public static int CountPermissions(FilePermissions permissions)
            {
                int count = 0;
                foreach (FilePermissions p in Enum.GetValues(typeof(FilePermissions)))
                    if (p != FilePermissions.None && (permissions & p) == p) count++;
                return count;
            }
        }

        public static void Run()
        {
            Console.WriteLine("=== Solution 10: Bitwise File Permissions ===");

            var perms = FilePermissions.Read;
            Console.WriteLine($"Initial: {perms}");

            perms = FileAccessManager.Grant(perms, FilePermissions.Write);
            Console.WriteLine($"Grant Write: {perms}");

            bool canExecute = FileAccessManager.HasPermission(perms, FilePermissions.Execute);
            Console.WriteLine($"Has Execute? {canExecute}");

            perms = FileAccessManager.Grant(perms, FilePermissions.FullControl);
            Console.WriteLine($"Grant FullControl: {perms}");

            int count = FileAccessManager.CountPermissions(perms);
            Console.WriteLine($"Permissions count: {count}");

            perms = FileAccessManager.Revoke(perms, FilePermissions.Write);
            Console.WriteLine($"Revoke Write: {perms}");

            perms = FileAccessManager.Toggle(perms, FilePermissions.Execute);
            Console.WriteLine($"Toggle Execute: {perms}");

            Console.WriteLine("\nSolution 10 complete");
        }
    }
}