uff, lot of work

OwnChar/OwnCharManager.cs

@@ -0,0 +1,62 @@
+using OwnChar.Api;
+using OwnChar.Api.Exceptions;
+using OwnChar.Data.Model.Client;
+using OwnChar.Modules;
+using Pilz.Cryptography;
+using System.Diagnostics.CodeAnalysis;
+
+namespace OwnChar;
+
+internal class OwnCharManager : IOwnCharManager
+{
+    // User
+    public bool IsLoggedIn => Api is not null && Api.IsLoggedIn;
+
+    // Data Provider
+    public OwnCharApiClient? Api { get; private set; }
+
+    // Manager
+    public IUserManager Users { get; }
+    public IGroupsManager Groups { get; }
+    public ICharacterManager Characters { get; }
+
+    public OwnCharManager()
+    {
+        Users = new UserManager(this);
+        Groups = new GroupsManager(this);
+        Characters = new CharacterManager(this);
+    }
+
+    [MemberNotNull(nameof(Api))]
+    internal protected void CheckLogin()
+    {
+        if (!IsLoggedIn)
+            throw new LoginException("You are already logged in!");
+    }
+
+    /// <summary>
+    /// Tries to login on the given data provider.
+    /// </summary>
+    /// <returns>Returns <see cref="true"/> if the login was successfull and <see cref="false"/> if not.</returns>
+    public Task<UserProfile?> Login(string? username, SecureString? password)
+    {
+        ArgumentNullException.ThrowIfNull(Api, nameof(Api));
+        ArgumentException.ThrowIfNullOrWhiteSpace(username, nameof(username));
+        ArgumentException.ThrowIfNullOrWhiteSpace(password, nameof(password));
+
+        username = username.Trim().ToLower();
+
+        return Api.Auth.Login(username, OwnCharUtils.HashPassword(username, password));
+    }
+
+    /// <summary>
+    /// Closes the session on the current data provider.
+    /// </summary>
+    /// <returns></returns>
+    public async Task<bool> Logout()
+    {
+        if (Api is null)
+            return true;
+        return await Api.Auth.Logout();
+    }
+}