Move from sqids

Author: BenjaminMichaelis

Directory.Packages.props

@@ -24,12 +24,10 @@
     <PackageVersion Include="IntelliTect.Multitool" Version="1.5.3" />
     <PackageVersion Include="Mailjet.Api" Version="3.0.0" />
     <PackageVersion Include="Microsoft.AspNetCore.Authentication.MicrosoftAccount" Version="8.0.12" />
-    <PackageVersion Include="Microsoft.AspNetCore.Components" Version="9.0.1" />
     <PackageVersion Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.12" />
     <PackageVersion Include="Microsoft.AspNetCore.Identity.UI" Version="8.0.12" />
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="8.0.12" />
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.12" />
-    <PackageVersion Include="Microsoft.AspNetCore.WebUtilities" Version="8.0.8" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="4.8.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore.Sqlite" Version="8.0.10" />
@@ -40,7 +38,6 @@
     <PackageVersion Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="9.0.0" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageVersion Include="Octokit" Version="14.0.0" />
-    <PackageVersion Include="Sqids" Version="3.1.0" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.1" />
   </ItemGroup>

EssentialCSharp.Web/EssentialCSharp.Web.csproj

@@ -22,11 +22,9 @@
     <PackageReference Include="Mailjet.Api" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.MicrosoftAccount" />
-    <PackageReference Include="Microsoft.AspNetCore.Components" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.UI" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" />
-    <PackageReference Include="Microsoft.AspNetCore.WebUtilities" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Tools">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
@@ -35,7 +33,6 @@
     <PackageReference Include="Newtonsoft.Json" />
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" />
     <PackageReference Include="Octokit" />
-    <PackageReference Include="Sqids" />
   </ItemGroup>
   <ItemGroup>
     <Content Update="wwwroot\images\00mindmap.svg">

EssentialCSharp.Web/Program.cs

@@ -9,8 +9,7 @@
 using Microsoft.AspNetCore.HttpOverrides;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Identity.UI.Services;
-using Microsoft.EntityFrameworkCore;
-using Sqids;
+using Microsoft.EntityFrameworkCore;
 
 namespace EssentialCSharp.Web;
 
@@ -107,13 +106,6 @@ private static void Main(string[] args)
         builder.Services.AddCaptchaService(builder.Configuration.GetSection(CaptchaOptions.CaptchaSender));
         builder.Services.AddSingleton<ISiteMappingService, SiteMappingService>();
         builder.Services.AddHostedService<DatabaseMigrationService>();
-        builder.Services.AddSingleton(new SqidsEncoder<int>(new()
-        {
-            // This is a shuffled version of the default alphabet so the id's are at least unique to this site.
-            // This being open source, it will be easy to decode the ids, but these id's are not meant to be secure.
-            Alphabet = "imx4z2Ys7GZLXDqT5IkUOEnyvwPKJtp13NWdeuH6rRhCcQogjM8V09l",
-            MinLength = 7,
-        }));
         builder.Services.AddScoped<IReferralService, ReferralService>();
 
         if (!builder.Environment.IsDevelopment())

EssentialCSharp.Web/Services/Referrals/ReferralService.cs

@@ -4,11 +4,11 @@
 using EssentialCSharp.Web.Extensions;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
-using Sqids;
+using Microsoft.IdentityModel.Tokens;
 
 namespace EssentialCSharp.Web.Services.Referrals;
 
-public class ReferralService(EssentialCSharpWebContext dbContext, SqidsEncoder<int> sqids, UserManager<EssentialCSharpWebUser> userManager) : IReferralService
+public class ReferralService(EssentialCSharpWebContext dbContext, UserManager<EssentialCSharpWebUser> userManager) : IReferralService
 {
     public async Task<string?> GetReferralIdAsync(string userId)
     {
@@ -42,8 +42,11 @@ public class ReferralService(EssentialCSharpWebContext dbContext, SqidsEncoder<i
             }
             else
             {
-                Random random = Random.Shared;
-                referrerId = sqids.Encode(random.Next());
+                do
+                {
+                    referrerId = Base64UrlEncoder.Encode(Guid.NewGuid().ToByteArray())[..8];
+                }
+                while (dbContext.UserClaims.Any(claim => claim.ClaimType == ClaimsExtensions.ReferrerIdClaimType && claim.ClaimValue == referrerId));
 
                 await userManager.AddClaimAsync(user, new Claim(ClaimsExtensions.ReferrerIdClaimType, referrerId));
                 return referrerId;