- tweak: Migrate v3 profiles

Nebula.Shared/Services/ConfigurationService.cs

@@ -1,6 +1,8 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Text.Json;
+using Microsoft.Extensions.DependencyInjection;
 using Nebula.Shared.FileApis.Interfaces;
+using Nebula.Shared.Models;
 using Nebula.Shared.Services.Logging;
 using Robust.LoaderApi;
 
@@ -30,23 +32,116 @@ public static class ConVarBuilder
 
         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);
+    }
+}
+
+public interface IConfigurationMigration
+{
+    public Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider, ILoadingHandler loadingHandler);
+}
+
+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);
+}
+
+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);
+        }
+    }
+}
+
+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);
+    }
 }
 
 [ServiceRegister]
 public class ConfigurationService
 {
+    private readonly IServiceProvider _serviceProvider;
+    private static List<IConfigurationMigration> _migrations = [];
+
+    public static void AddConfigurationMigration(IConfigurationMigration configurationMigration)
+    {
+        _migrations.Add(configurationMigration);
+    }
+    
     public delegate void OnConfigurationChangedDelegate<in T>(T value);
     
-    public IReadWriteFileApi ConfigurationApi { get; init; }
+    public IReadWriteFileApi ConfigurationApi { get; }
     
     private readonly ILogger _logger;
 
-    public ConfigurationService(FileService fileService, DebugService debugService)
+    public ConfigurationService(FileService fileService, DebugService debugService, IServiceProvider serviceProvider)
     {
+        _serviceProvider = serviceProvider;
         _logger = debugService.GetLogger(this);
         ConfigurationApi = fileService.CreateFileApi("config");
     }
 
+    public void MigrateConfigs(ILoadingHandler loadingHandler)
+    {
+        Task.Run(async () =>
+        {
+            foreach (var migration in _migrations)
+            {
+                await migration.DoMigrate(this, _serviceProvider, loadingHandler);
+            }
+
+            if (loadingHandler is IDisposable disposable)
+            {
+                disposable.Dispose();
+            }
+        });
+    }
+
     public ConfigChangeSubscriberDisposable<T> SubscribeVarChanged<T>(ConVar<T> convar, OnConfigurationChangedDelegate<T?> @delegate, bool invokeNow = false)
     {
         convar.OnValueChanged += @delegate;
@@ -112,12 +207,17 @@ public class ConfigurationService
         return false;
     }
 
+    public void ClearConfigValue<T>(ConVar<T> conVar)
+    {
+        ConfigurationApi.Remove(GetFileName(conVar));
+        conVar.OnValueChanged?.Invoke(conVar.DefaultValue);
+    }
+
     public void SetConfigValue<T>(ConVar<T> conVar, T? value)
     {
         if (value == null)
         {
-            ConfigurationApi.Remove(GetFileName(conVar));
-            conVar.OnValueChanged?.Invoke(conVar.DefaultValue);
+            ClearConfigValue(conVar);
             return;
         }