Surf Directory - C# Programming Exercise

// Import necessary namespaces
using System;
using System.IO;
using System.Linq;

class SurfDirectory
{
    // Main method where the program execution starts
    static void Main()
    {
        string currentPath = Directory.GetCurrentDirectory(); // Start in the current directory
        NavigateDirectory(currentPath); // Call the method to start navigating
    }

    // Method to navigate through the directory
    static void NavigateDirectory(string path)
    {
        while (true)
        {
            // Get all directories and files in the current path
            var directories = Directory.GetDirectories(path);
            var files = Directory.GetFiles(path);

            // Display the list of directories and files
            Console.Clear();
            Console.WriteLine($"Current Directory: {path}");
            Console.WriteLine("Directories:");
            foreach (var directory in directories)
            {
                Console.WriteLine($"[DIR] {Path.GetFileName(directory)}");
            }

            Console.WriteLine("\nFiles:");
            foreach (var file in files)
            {
                Console.WriteLine($"[FILE] {Path.GetFileName(file)}");
            }

            // Ask for user input
            Console.WriteLine("\nEnter the name of the folder or file to open, or '..' to go up a level.");
            Console.Write("Your choice: ");
            string choice = Console.ReadLine();

            // Handle navigation
            if (choice == "..") // Go up to the parent directory
            {
                string parentDir = Directory.GetParent(path).FullName;
                if (Directory.Exists(parentDir))
                {
                    path = parentDir; // Change to parent directory
                }
            }
            else
            {
                // Check if the choice is a directory
                var selectedDirectory = directories.FirstOrDefault(d => Path.GetFileName(d) == choice);
                if (selectedDirectory != null)
                {
                    path = selectedDirectory; // Change to the selected directory
                }
                else
                {
                    // Check if the choice is a file
                    var selectedFile = files.FirstOrDefault(f => Path.GetFileName(f) == choice);
                    if (selectedFile != null)
                    {
                        // Open the file (just display the file contents here)
                        Console.Clear();
                        Console.WriteLine($"Opening file: {selectedFile}");
                        Console.WriteLine("\nFile contents:");
                        try
                        {
                            string fileContents = File.ReadAllText(selectedFile);
                            Console.WriteLine(fileContents);
                        }
                        catch (Exception ex)
                        {
                            Console.WriteLine($"Error reading file: {ex.Message}");
                        }

                        // Wait for user input before going back to the directory
                        Console.WriteLine("\nPress any key to go back to the directory...");
                        Console.ReadKey();
                    }
                    else
                    {
                        Console.WriteLine("Invalid choice, please try again.");
                    }
                }
            }
        }
    }
}