Feature: Google OAuth2

src/Infrastructure/Services/UserService.cs

@@ -1,4 +1,6 @@
-using Google.Apis.Oauth2.v2.Data;
+using System.Security.Cryptography;
+using System.Text;
+using Google.Apis.Oauth2.v2.Data;
 using Hutopy.Domain.Interfaces;
 using Hutopy.Domain.Models;
 using Hutopy.Infrastructure.Identity;
@@ -8,6 +10,8 @@ namespace Hutopy.Infrastructure.Services;
 
 public class UserService(UserManager<ApplicationUser> userManager) : IUserService
 {
+    private readonly Random _random = new(DateTime.Now.Millisecond);
+    
     public async Task CreateUserAsync(string email, string userName, string firstName, string lastName, string password)
     {
         var applicationUser = new ApplicationUser
@@ -22,26 +26,13 @@ public class UserService(UserManager<ApplicationUser> userManager) : IUserServic
         
         if (!response.Succeeded)
         {
-            throw new Exception("Failed to create user");
+            throw new Exception("Failed to create user", new AggregateException(response.Errors.Select(e => new Exception(e.Description))));
         }
     }
 
     public async Task CreateUserAsync(Userinfo userInfo)
     {
-        var applicationUser = new ApplicationUser
-        {
-            UserName = userInfo.Name,
-            Email = userInfo.Email,
-            FirstName = userInfo.GivenName,
-            LastName = userInfo.FamilyName
-        };
-
-        var response = await userManager.CreateAsync(applicationUser, Guid.NewGuid().ToString("N")[..32]);
-
-        if (!response.Succeeded)
-        {
-            throw new Exception("Failed to create user");
-        }
+        await CreateUserAsync(userInfo.Email, userInfo.GivenName, userInfo.GivenName, userInfo.FamilyName, GeneratePassword(24));
     }
 
     public async Task<UserModel?> FindUserByIdAsync(string id)
@@ -50,7 +41,7 @@ public class UserService(UserManager<ApplicationUser> userManager) : IUserServic
 
         if (response == null) return null;
 
-        var userModel = new UserModel()
+        var userModel = new UserModel
         {
             Id = response.Id,
             UserName = response.UserName,
@@ -68,7 +59,7 @@ public class UserService(UserManager<ApplicationUser> userManager) : IUserServic
 
         if (response == null) return null;
 
-        var userModel = new UserModel()
+        var userModel = new UserModel
         {
             Id = response.Id,
             UserName = response.UserName,
@@ -79,5 +70,23 @@ public class UserService(UserManager<ApplicationUser> userManager) : IUserServic
 
         return userModel;
     }
+    
+    private const string Characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+    private const string SpecialCharacters = "!@#$%^&*()_+";
+    
+    private String GeneratePassword(int length)
+    {
+        // Using a string builder has additional overhead, maybe we can find something else
+        var password = new StringBuilder();
+        
+        for (var i = 0; i < length; i++)
+        {
+            password.Append(Characters[_random.Next(Characters.Length)]);
+        }
+        
+        password.Append(SpecialCharacters[_random.Next(SpecialCharacters.Length)]);
+        
+        return password.ToString();
+    }
 }