Add MedMind recovery and Steam authentication

Models/DTOs/PasswordResetRequests.cs

@@ -0,0 +1,13 @@
+namespace GameAuthApi.Models;
+
+public class PasswordResetRequest
+{
+    public string Login { get; set; }
+}
+
+public class PasswordResetConfirmRequest
+{
+    public string Login { get; set; }
+    public string Code { get; set; }
+    public string NewPassword { get; set; }
+}

Models/DTOs/SteamCompleteRequest.cs

@@ -0,0 +1,10 @@
+namespace GameAuthApi.Models;
+
+public class SteamCompleteRequest
+{
+    public string TransactionId { get; set; }
+    public string Action { get; set; }
+    public string Username { get; set; }
+    public string Email { get; set; }
+    public string Password { get; set; }
+}

Models/ExternalIdentityLink.cs

@@ -0,0 +1,16 @@
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using System;
+
+namespace GameAuthApi.Models;
+
+public class ExternalIdentityLink
+{
+    [BsonId]
+    [BsonRepresentation(BsonType.ObjectId)]
+    public string Id { get; set; }
+    public string Provider { get; set; }
+    public string Subject { get; set; }
+    public string UserId { get; set; }
+    public DateTime CreatedUtc { get; set; }
+}

Models/PasswordResetChallenge.cs

@@ -0,0 +1,18 @@
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using System;
+
+namespace GameAuthApi.Models;
+
+public class PasswordResetChallenge
+{
+    [BsonId]
+    [BsonRepresentation(BsonType.ObjectId)]
+    public string Id { get; set; }
+    public string UserId { get; set; }
+    public string CodeHash { get; set; }
+    public int FailedAttempts { get; set; }
+    public DateTime ExpiresUtc { get; set; }
+    public DateTime CreatedUtc { get; set; }
+    public bool Used { get; set; }
+}

Models/SteamAuthTransaction.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace GameAuthApi.Models;
+
+public class SteamAuthTransaction
+{
+    public string Id { get; set; }
+    public string Status { get; set; } = "pending";
+    public string SteamId { get; set; }
+    public string UserId { get; set; }
+    public string AccessToken { get; set; }
+    public string RefreshToken { get; set; }
+    public string Username { get; set; }
+    public string Role { get; set; }
+    public DateTime ExpiresUtc { get; set; }
+    public DateTime CreatedUtc { get; set; }
+}

Models/User.cs

@@ -16,4 +16,6 @@ public class User
     public string RefreshToken { get; set; }
     public DateTime RefreshTokenExpiry { get; set; }
     public string Email { get; set; }
-}
+    public string NormalizedUsername { get; set; }
+    public string NormalizedEmail { get; set; }
+}