- fix: auth logic part 1

Nebula.Shared/Configurations/ComplexConVarBinder.cs

@@ -0,0 +1,70 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace Nebula.Shared.Configurations;
+
+public abstract class ComplexConVarBinder<T> : INotifyPropertyChanged, INotifyPropertyChanging
+{
+    private readonly ConVarObserver<T> _baseConVar;
+    private readonly Lock _lock = new();
+    private readonly SemaphoreSlim _valueChangeSemaphore = new(1, 1);
+
+    public T? Value
+    {
+        get
+        {
+            lock (_lock)
+            {
+                return _baseConVar.Value;
+            }
+        }
+        set
+        {
+            _ = SetValueAsync(value);
+        }
+    }
+
+    protected ComplexConVarBinder(ConVarObserver<T> baseConVar)
+    {
+        _baseConVar = baseConVar ?? throw new ArgumentNullException(nameof(baseConVar));
+        _baseConVar.PropertyChanged += BaseConVarOnPropertyChanged;
+        _baseConVar.PropertyChanging += BaseConVarOnPropertyChanging;
+    }
+    
+
+    private async Task SetValueAsync(T? value)
+    {
+        await _valueChangeSemaphore.WaitAsync().ConfigureAwait(false);
+
+        try
+        {
+            var newValue = await OnValueChange(value).ConfigureAwait(false);
+
+            lock (_lock)
+            {
+                _baseConVar.Value = newValue;
+            }
+        }
+        finally
+        {
+            _valueChangeSemaphore.Release();
+        }
+    }
+
+    protected abstract Task<T?> OnValueChange(T? newValue);
+
+    private void BaseConVarOnPropertyChanged(object? sender, PropertyChangedEventArgs e)
+    {
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Value)));
+    }
+    
+    private void BaseConVarOnPropertyChanging(object? sender, PropertyChangingEventArgs e)
+    {
+        PropertyChanging?.Invoke(this, new PropertyChangingEventArgs(nameof(Value)));
+    }
+    
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    public event PropertyChangingEventHandler? PropertyChanging;
+}

Nebula.Shared/Configurations/ConVar.cs

@@ -0,0 +1,18 @@
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations;
+
+public class ConVar<T>
+{
+    internal ConfigurationService.OnConfigurationChangedDelegate<T?>? OnValueChanged;
+    
+    public ConVar(string name, T? defaultValue = default)
+    {
+        Name = name ?? throw new ArgumentNullException(nameof(name));
+        DefaultValue = defaultValue;
+    }
+
+    public string Name { get; }
+    public Type Type => typeof(T);
+    public T? DefaultValue { get; }
+}

Nebula.Shared/Configurations/ConVarBuilder.cs

@@ -0,0 +1,25 @@
+using Nebula.Shared.Configurations.Migrations;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations;
+
+public static class ConVarBuilder
+{
+    public static ConVar<T> Build<T>(string name, T? defaultValue = default)
+    {
+        if (string.IsNullOrWhiteSpace(name))
+            throw new ArgumentException("ConVar name cannot be null or whitespace.", nameof(name));
+
+        return new ConVar<T>(name, defaultValue);
+    }
+
+    public static ConVar<T> BuildWithMigration<T>(string name, IConfigurationMigration migration, T? defaultValue = default)
+    {
+        if (string.IsNullOrWhiteSpace(name))
+            throw new ArgumentException("ConVar name cannot be null or whitespace.", nameof(name));
+        
+        ConfigurationService.AddConfigurationMigration(migration);
+
+        return new ConVar<T>(name, defaultValue);
+    }
+}

Nebula.Shared/Configurations/ConVarObserver.cs

@@ -0,0 +1,68 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations;
+
+public sealed class ConVarObserver<T> : IDisposable, INotifyPropertyChanged, INotifyPropertyChanging
+{
+    private readonly ConVar<T> _convar;
+    private readonly ConfigurationService _configurationService;
+    
+    private T? _value;
+    private ConfigurationService.OnConfigurationChangedDelegate<T> _delegate;
+
+    public T? Value
+    {
+        get => _value; 
+        set => _configurationService.SetConfigValue(_convar, value);
+    }
+
+    public ConVarObserver(ConVar<T> convar, ConfigurationService configurationService)
+    {
+        _convar = convar;
+        _convar.OnValueChanged += OnValueChanged;
+        _configurationService = configurationService;
+        _delegate += OnValueChanged;
+        
+        OnValueChanged(configurationService.GetConfigValue(_convar));
+    }
+
+    private void OnValueChanged(T? value)
+    {
+        OnPropertyChanging(nameof(Value));
+        
+        if(value is null && _value is null)
+            return;
+        if (_value is not null && _value.Equals(value))
+            return;
+        
+        _value = value;
+        OnPropertyChanged(nameof(Value));
+    }
+
+    public void Dispose()
+    {
+        _convar.OnValueChanged -= OnValueChanged;
+    }
+
+    public bool HasValue()
+    {
+        return Value != null;
+    }
+    
+    public static implicit operator T? (ConVarObserver<T> convar) => convar.Value;
+
+    public event PropertyChangingEventHandler? PropertyChanging;
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    private void OnPropertyChanged([CallerMemberName] string? propertyName = null)
+    {
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+    }
+    private void OnPropertyChanging([CallerMemberName] string? propertyName = null)
+    {
+        PropertyChanging?.Invoke(this, new PropertyChangingEventArgs(propertyName));
+    }
+    
+}

Nebula.Shared/Configurations/Migrations/BaseConfigurationMigration.cs

@@ -0,0 +1,28 @@
+using Nebula.Shared.Models;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations.Migrations;
+
+public abstract class BaseConfigurationMigration<T1,T2> : IConfigurationMigration
+{
+    protected ConVar<T1> OldConVar;
+    protected ConVar<T2> NewConVar;
+    
+    public BaseConfigurationMigration(string oldName, string newName)
+    {
+        OldConVar = ConVarBuilder.Build<T1>(oldName);
+        NewConVar = ConVarBuilder.Build<T2>(newName);
+    }
+
+    public async Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider, ILoadingHandler loadingHandler)
+    {
+        var oldValue = configurationService.GetConfigValue(OldConVar);
+        if(oldValue == null) return;
+        
+        var newValue = await Migrate(serviceProvider, oldValue, loadingHandler);
+        configurationService.SetConfigValue(NewConVar, newValue);
+        configurationService.ClearConfigValue(OldConVar);
+    }
+
+    protected abstract Task<T2> Migrate(IServiceProvider serviceProvider, T1 oldValue, ILoadingHandler loadingHandler);
+}

Nebula.Shared/Configurations/Migrations/IConfigurationMigration.cs

@@ -0,0 +1,9 @@
+using Nebula.Shared.Models;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations.Migrations;
+
+public interface IConfigurationMigration
+{
+    public Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider, ILoadingHandler loadingHandler);
+}

Nebula.Shared/Configurations/Migrations/MigrationQueue.cs

@@ -0,0 +1,15 @@
+using Nebula.Shared.Models;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations.Migrations;
+
+public class MigrationQueue(List<IConfigurationMigration> migrations) : IConfigurationMigration
+{
+    public async Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider , ILoadingHandler loadingHandler)
+    {
+        foreach (var migration in migrations)
+        {
+            await migration.DoMigrate(configurationService, serviceProvider, loadingHandler);
+        }
+    }
+}

Nebula.Shared/Configurations/Migrations/MigrationQueueBuilder.cs

@@ -0,0 +1,19 @@
+namespace Nebula.Shared.Configurations.Migrations;
+
+public class MigrationQueueBuilder
+{
+    public static MigrationQueueBuilder Instance => new();
+    
+    private readonly List<IConfigurationMigration> _migrations = [];
+
+    public MigrationQueueBuilder With(IConfigurationMigration migration)
+    {
+        _migrations.Add(migration);
+        return this;
+    }
+
+    public MigrationQueue Build()
+    {
+        return new MigrationQueue(_migrations);
+    }
+}