Reorganize and Add UserManager

Users/User.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Akari.Provider.WaveshareUART.Users
+{
+    public class User
+    {
+        public string Name { get; private set; }
+        public string Token { get; private set; }
+        public ushort RangeStart { get; private set; }
+
+        public User()
+        {
+
+        }
+
+        public User(string name, string token, ushort rangeStart)
+        {
+            Name = name;
+            Token = token;
+            RangeStart = rangeStart;
+        }
+    }
+}

Users/UsersManager.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Terminal.Gui;
+using YamlDotNet.Serialization;
+
+namespace Akari.Provider.WaveshareUART.Users
+{
+    public class UsersManager
+    {
+        public const string UsersFilePath = "users.yaml";
+
+        private readonly List<User> _users;
+        private IDeserializer _deserializer;
+        private ISerializer _serializer;
+
+        public int Count => _users.Count;
+
+        public UsersManager()
+        {
+            _serializer = new SerializerBuilder().Build();
+            _deserializer = new DeserializerBuilder().Build();
+
+            try
+            {
+                if (!File.Exists(UsersFilePath))
+                {
+                    _users = new List<User>();
+                }
+                else
+                {
+                    _users = _deserializer.Deserialize<List<User>>(File.ReadAllText(UsersFilePath));
+                }
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine($"Can't load users: {e.Message}");
+                Console.WriteLine(e.StackTrace);
+            }
+        }
+
+        public User this[string name] => _users.FirstOrDefault(u => u.Name.Equals(name, StringComparison.OrdinalIgnoreCase));
+
+        public void Add(User user)
+        {
+            _users.Add(user);
+
+            Save();
+        }
+
+        public IReadOnlyCollection<User> GetAll()
+        {
+            return _users.AsReadOnly();
+        }
+
+        public void Remove(User user)
+        {
+            _users.Remove(user);
+
+            Save();
+        }
+
+        public void Clear()
+        {
+            _users.Clear();
+
+            Save();
+        }
+
+        private void Save()
+        {
+            try
+            {
+                File.WriteAllText(UsersFilePath, _serializer.Serialize(_users));
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine($"Can't save users: {e.Message}");
+                Console.WriteLine(e.StackTrace);
+
+                MessageBox.ErrorQuery("Users", $"Can't save users: {e.Message}");
+            }
+        }
+    }
+}