Deleting old accounts is now a scheduled job.

SS14.Auth.Shared/Config/AccountConfiguration.cs

@@ -0,0 +1,9 @@
+namespace SS14.Auth.Shared.Config;
+
+public sealed class AccountConfiguration
+{
+    /// <summary>
+    /// Delete unconfirmed accounts after this many days.
+    /// </summary>
+    public int DeleteUnconfirmedAfter { get; set; } = 3;
+}

SS14.Auth.Shared/StartupHelpers.cs

@@ -28,6 +28,7 @@ public static void AddShared(IServiceCollection services, IConfiguration config)
         services.Configure<MutexOptions>(config.GetSection("Mutex"));
         services.Configure<PatreonConfiguration>(config.GetSection("Patreon"));
         services.Configure<AccountLogRetentionConfiguration>(config.GetSection("AccountLogRetention"));
+        services.Configure<AccountConfiguration>(config.GetSection("Account"));
         services.Configure<SecurityStampValidatorOptions>(options =>
         {
             // The fact that this isn't default absolutely baffles me.

SS14.Auth/Jobs/DeleteUnconfirmedAccountsJob.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using Quartz;
+using SS14.Auth.Shared.Config;
+using SS14.Auth.Shared.Data;
+
+namespace SS14.Auth.Jobs;
+
+public sealed class DeleteUnconfirmedAccounts(ApplicationDbContext dbContext,
+    ILogger<DeleteUnconfirmedAccounts> logger,
+    IOptions<AccountConfiguration> configuration) : IJob
+{
+    public async Task Execute(IJobExecutionContext context)
+    {
+        var optionsValue = configuration.Value;
+
+        var retainMinimum = DateTime.UtcNow - TimeSpan.FromDays(optionsValue.DeleteUnconfirmedAfter);
+
+        // TODO: Use ExecuteDelete() on newer EF Core version.
+        var accounts = await dbContext.Users
+            .Where(user => !user.EmailConfirmed && user.CreatedTime < retainMinimum)
+            .ToListAsync(context.CancellationToken);
+
+        dbContext.RemoveRange(accounts);
+        await dbContext.SaveChangesAsync();
+        logger.LogInformation("Deleted {Count} unconfirmed accounts from database", accounts.Count);
+    }
+}

SS14.Auth/Startup.cs

@@ -61,6 +61,11 @@ public void ConfigureServices(IServiceCollection services)
                 {
                     schedule.RepeatForever().WithIntervalInHours(24);
                 }));
+
+                q.ScheduleJob<DeleteUnconfirmedAccounts>(trigger => trigger.WithSimpleSchedule(schedule =>
+                {
+                    schedule.RepeatForever().WithIntervalInHours(24);
+                }));
             }
         });
         services.AddQuartzHostedService();