files

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection.Emit;
using System.Text;
using static System.Net.WebRequestMethods;

namespace DSA
{
    public class FileUtils
    {
        public const string Path = @"..\..\..\Images";
        public static List<string> files = new List<string>();
        public static Dictionary<string, int> stats = new Dictionary<string, int>();


        public static string GetFileExtension(string filePath)
        {
            int lastIndex = filePath.LastIndexOf('.');

            return filePath[lastIndex..];
        }

        public static string GetFileName(string path)
        {
            int lastIndex = path.LastIndexOf('\\') + 1;
            string lastPart = path[lastIndex..];
            return lastPart;
        }

        public static string TraverseDirectories(string path, int level = 0)
        {
            var indentation = new string(' ', level * 2);
            var result = $"{indentation}{GetFileName(path)}:\n";

            foreach (var file in Directory.GetFiles(path))
            {
                result += $"{indentation + new string(' ', 2)}{GetFileName(file)}\n";
            }

            foreach (var directory in Directory.GetDirectories(path))
            {
                result += TraverseDirectories(directory, level + 1);
            }

            return result;
        }

        public static List<string> FindFiles(string path, string extension)
        {

            foreach (var file in Directory.GetFiles(path))
            {
                if (GetFileExtension(file).Equals(extension))
                {
                    files.Add(GetFileName(file));
                }
            }

            foreach (var directory in Directory.GetDirectories(path))
            {
                FindFiles(directory, extension);
            }

            return files;
        }

        public static bool FileExists(string path, string fileName)
        {
            foreach (var file in Directory.GetFiles(path))
            {
                if (GetFileName(file).Equals(fileName))
                {
                    return true;
                }
            }

            foreach (var directory in Directory.GetDirectories(path))
            {
                if (FileExists(directory, fileName))
                {
                    return true;
                }
            }

            return false;
        }

        public static Dictionary<string, int> GetDirectoryStats(string path)
        {

            foreach (var file in Directory.GetFiles(path))
            {
                var extension = GetFileExtension(file);
                if (!stats.ContainsKey(extension))
                {
                    stats[extension] = 0;
                }
                stats[extension]++;
            }

            foreach (var directory in Directory.GetDirectories(path))
            {
                GetDirectoryStats(directory);
            }

            return stats;
        }
    }
}