Allow to set username on social registration.

modules/account/src/Volo.Abp.Account.Web/Pages/Account/AccountPageModel.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.Extensions.Options;
 using Volo.Abp.Account.Localization;
@@ -54,4 +55,22 @@ public abstract class AccountPageModel : AbpPageModel
 
         return exception.Message;
     }
+
+    protected virtual async Task<string> GetUserNameFromEmail(string email)
+    {
+        var userName = email.Split('@')[0];
+        var existUser = await UserManager.FindByNameAsync(userName);
+        while (existUser != null)
+        {
+            var randomUserName = userName + RandomHelper.GetRandom(1000, 9999);
+            existUser = await UserManager.FindByNameAsync(randomUserName);
+            if (existUser == null)
+            {
+                userName = randomUserName;
+                break;
+            }
+        }
+
+        return userName;
+    }
 }

modules/account/src/Volo.Abp.Account.Web/Pages/Account/Login.cshtml.cs

@@ -269,8 +269,9 @@ public class LoginModel : AccountPageModel
         await IdentityOptions.SetAsync();
 
         var emailAddress = info.Principal.FindFirstValue(AbpClaimTypes.Email);
+        var userName = await GetUserNameFromEmail(emailAddress);
 
-        var user = new IdentityUser(GuidGenerator.Create(), emailAddress, emailAddress, CurrentTenant.Id);
+        var user = new IdentityUser(GuidGenerator.Create(), userName, emailAddress, CurrentTenant.Id);
 
         CheckIdentityErrors(await UserManager.CreateAsync(user));
         CheckIdentityErrors(await UserManager.SetEmailAsync(user, emailAddress));

modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml

@@ -12,7 +12,7 @@
             <a href="@Url.Page("./Login", new {returnUrl = Model.ReturnUrl, returnUrlHash = Model.ReturnUrlHash})" class="text-decoration-none">@L["Login"]</a>
         </strong>
         <form method="post" class="mt-4">
-            @if (!Model.IsExternalLogin && Model.EnableLocalRegister)
+            @if (Model.EnableLocalRegister)
             {
                 <abp-input asp-for="Input.UserName" auto-focus="true"/>
             }

modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml.cs

@@ -75,7 +75,7 @@ public class RegisterModel : AccountPageModel
         return Page();
     }
 
-    private async Task TrySetEmailAsync()
+    protected virtual async Task TrySetEmailAsync()
     {
         if (IsExternalLogin)
         {
@@ -98,7 +98,8 @@ public class RegisterModel : AccountPageModel
                 return;
             }
 
-            Input = new PostInput { EmailAddress = emailClaim.Value };
+            var userName = await GetUserNameFromEmail(emailClaim.Value);
+            Input = new PostInput { UserName = userName, EmailAddress = emailClaim.Value };
         }
     }
 
@@ -122,7 +123,7 @@ public class RegisterModel : AccountPageModel
                     return RedirectToPage("./Login");
                 }
 
-                await RegisterExternalUserAsync(externalLoginInfo, Input.EmailAddress);
+                await RegisterExternalUserAsync(externalLoginInfo, Input.UserName, Input.EmailAddress);
             }
             else
             {
@@ -156,11 +157,11 @@ public class RegisterModel : AccountPageModel
         await SignInManager.SignInAsync(user, isPersistent: true);
     }
 
-    protected virtual async Task RegisterExternalUserAsync(ExternalLoginInfo externalLoginInfo, string emailAddress)
+    protected virtual async Task RegisterExternalUserAsync(ExternalLoginInfo externalLoginInfo, string userName, string emailAddress)
     {
         await IdentityOptions.SetAsync();
 
-        var user = new IdentityUser(GuidGenerator.Create(), emailAddress, emailAddress, CurrentTenant.Id);
+        var user = new IdentityUser(GuidGenerator.Create(), userName, emailAddress, CurrentTenant.Id);
 
         (await UserManager.CreateAsync(user)).CheckErrors();
         (await UserManager.AddDefaultRolesAsync(user)).CheckErrors();
@@ -202,7 +203,6 @@ public class RegisterModel : AccountPageModel
 
     protected virtual async Task<List<ExternalProviderModel>> GetExternalProviders()
     {
-        
         var schemes = await SchemeProvider.GetAllSchemesAsync();
 
         return schemes