Simple File Explorer

Author: Morasiu

README.md

@@ -34,8 +34,8 @@ If you have any questions, you can contact me by email morasiu2@gmail.com
 ## Progress
 
 All - **100** <br>
-Done - **16** <br>
-Remain - **84** <br>
+Done - **18** <br>
+Remain - **82** <br>
 
 * <a name="00">00</a> Name Generator - 29.01.2018 *Done* (`Python 3`) <br>
 ![00](docs/images/00.png)
@@ -85,6 +85,7 @@ string.Concat(text.Reverse())
 * <a name="17">17</a>~~Eurelian Path~~<br>
 Why I didn't solve that challenge? It sounds fun, but I hate writing GUI and that would be a nightmare for me.
 Maybe some day? 
-* <a name="18">18</a> Simple file Explorer *Pending* (`C#`)<br>
+* <a name="18">18</a> Simple file Explorer - 09.08.2018 *Done* (`C#`)<br>
+* ![18](docs/images/18.png)
 ## Bonus
 * <a name="bonus1">Bonus 1</a> Loading animation in console 24.02.2018 *Done* (`C#`)![Bonus 1](docs/images/bonus1.gif)

challenges/18_Simple_File_Explorer/SimpleFileExplorer.cs

@@ -3,40 +3,124 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
-using System.Linq.Expressions;
-using System.Reflection.Metadata.Ecma335;
 
 class SimpleFileExplorer {
-  static void Main(string[] args) {
+
+  private static string _currentDirectory = Directory.GetCurrentDirectory();
+  private const string Version = "0.1.0";
+  private static int _cursorPosition;
+  private static string _selectedDirectory;
+  private static int _currentDirectoryLength;
+
+  private static void Main(string[] args) {
     Console.ForegroundColor = ConsoleColor.Green;
+    Console.Title = "Simple file explorer " + Version;
     Console.WriteLine("<--------Simple File Explorer--------->");
     Console.WriteLine("Created by Morasiu (morasiu2@gmail.com)");
 
     Start();
   }
 
-  static void Start() {
+  private static void Start() {
     Console.Clear();
-    Console.WriteLine("..");
-    var files = Directory.GetFiles(Directory.GetCurrentDirectory()).ToList();
-    //var files = Directory.GetFiles(@"c:\Users\hmorawski\Downloads").ToList();
-    foreach (var file in files) {
-      var fileName = Path.GetFileName(file);
-      var line = fileName;
-      var fileSize = GetFileSize(new FileInfo(file).Length);
-      for (var i = 0; i < Console.WindowWidth - fileName.Length - fileSize.Length - 1; i++) {
-        line += " ";
-      }
-
-      line += fileSize;
-      Console.WriteLine(line);
+    while (true) {
+      var files = GetFileList(_currentDirectory);
+      _currentDirectoryLength = files.Count;
+      RefreshScreen(files);
+      ManageInput();
+    }
+  }
+
+  private static void ManageInput() {
+    var key = Console.ReadKey().Key;
+    switch (key) {
+      case ConsoleKey.Q:
+        Environment.Exit(0);
+        break;
+      case ConsoleKey.F1:
+        DisplayInstruction();
+        break;
+      case ConsoleKey.UpArrow:
+        ChangeCurrentPositionBy(-1);
+        break;
+      case ConsoleKey.DownArrow:
+        ChangeCurrentPositionBy(1);
+        break;
+      case ConsoleKey.LeftArrow:
+        _currentDirectory = Directory.GetParent(_currentDirectory).FullName;
+        _cursorPosition = 0;
+        break;
+      case ConsoleKey.RightArrow:
+        if (IsFileDirectory(_selectedDirectory)) {
+          _currentDirectory = _selectedDirectory;
+          _cursorPosition = 0;
+        }
+        break;
     }
+  }
 
+  private static void ChangeCurrentPositionBy(int change) {
+    _cursorPosition += change;
+    if (_cursorPosition < 0) _cursorPosition = 0;
+    else if (_cursorPosition > _currentDirectoryLength - 1) _cursorPosition = _currentDirectoryLength - 1;
+  }
+
+  private static void DisplayInstruction() {
+    Console.Clear();
+    Console.WriteLine("Simple File Explorer v" + Version);
+    Console.WriteLine("Created by Morasiu in 2018");
+    Console.WriteLine("--------------------------\n");
+    Console.WriteLine("1. Use arrows to naviagte");
+    Console.WriteLine("\nPress any key to bo back");
+    Console.ReadKey();
+  }
+
+  private static void RefreshScreen(List<string> files) {
+    Console.Clear();
+    WriteAllFiles(files);
     MakeEmptyLines(files);
+    WriteInstructionOnBottom();
+  }
 
-    Console.Write("   q - Quit");
-    var key = Console.ReadKey().Key;
-    if (key == ConsoleKey.Q) Environment.Exit(0);
+  private static void WriteInstructionOnBottom() {
+    Console.Write("F1 - Help; Arrows - control; q - Quit");
+  }
+
+  private static void WriteAllFiles(IReadOnlyList<string> files) {
+    Console.WriteLine("..");
+    for (var i = 0;  i < files.Count(); i++) {
+      WriteFileInfo(files[i], i == _cursorPosition);
+    }
+  }
+
+  private static void WriteFileInfo(string file, bool addCursor) {
+    var fileName = Path.GetFileName(file);
+    if (addCursor) {
+      fileName += " <-";
+      _selectedDirectory = file;
+    }
+    var line = fileName;
+    var fileSize = "DIR";
+    if (!IsFileDirectory(file)) fileSize = GetFileSize(new FileInfo(file).Length);
+    line = FillLineWithSpaces(fileName, line, fileSize);
+    line += fileSize;
+    Console.WriteLine(line);
+  }
+
+  private static bool IsFileDirectory(string file) {
+    return (File.GetAttributes(file) & FileAttributes.Directory) != 0;
+  }
+
+  private static string FillLineWithSpaces(string fileName, string line, string fileSize) {
+    for (var i = 0; i < Console.WindowWidth - fileName.Length - fileSize.Length - 1; i++) {
+      line += " ";
+    }
+
+    return line;
+  }
+
+  private static List<string> GetFileList(string directory) {
+    return Directory.GetFileSystemEntries(directory).ToList();
   }
 
   private static string GetFileSize(long size) {

challenges/18_Simple_File_Explorer/SimpleFileExplorer.exe

@@ -3,6 +3,7 @@
 class Template{
   static void Main(string[] args){
     Console.ForegroundColor = ConsoleColor.Green;
+    Console.Title = "Templete";
     Console.WriteLine("<--------------Template--------------->");
     Console.WriteLine("Created by Morasiu (morasiu2@gmail.com)");
     Console.ReadKey();