feat(backend): add short IDs to models

Foxnouns.Backend/Controllers/MembersController.cs

@@ -50,9 +50,9 @@ public class MembersController(
             ("display_name", ValidationUtils.ValidateDisplayName(req.DisplayName)),
             ("bio", ValidationUtils.ValidateBio(req.Bio)),
             ("avatar", ValidationUtils.ValidateAvatar(req.Avatar)),
-            ..ValidationUtils.ValidateFields(req.Fields, CurrentUser!.CustomPreferences),
-            ..ValidationUtils.ValidateFieldEntries(req.Names?.ToArray(), CurrentUser!.CustomPreferences, "names"),
-            ..ValidationUtils.ValidatePronouns(req.Pronouns?.ToArray(), CurrentUser!.CustomPreferences)
+            .. ValidationUtils.ValidateFields(req.Fields, CurrentUser!.CustomPreferences),
+            .. ValidationUtils.ValidateFieldEntries(req.Names?.ToArray(), CurrentUser!.CustomPreferences, "names"),
+            .. ValidationUtils.ValidatePronouns(req.Pronouns?.ToArray(), CurrentUser!.CustomPreferences)
         ]);
 
         var member = new Member

Foxnouns.Backend/Database/DatabaseContext.cs

@@ -60,15 +60,19 @@ public class DatabaseContext : DbContext
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         modelBuilder.Entity<User>().HasIndex(u => u.Username).IsUnique();
+        modelBuilder.Entity<User>().HasIndex(u => u.Sid).IsUnique();
         modelBuilder.Entity<Member>().HasIndex(m => new { m.UserId, m.Name }).IsUnique();
+        modelBuilder.Entity<Member>().HasIndex(m => m.Sid).IsUnique();
         modelBuilder.Entity<TemporaryKey>().HasIndex(k => k.Key).IsUnique();
 
+        modelBuilder.Entity<User>().Property(u => u.Sid).HasDefaultValueSql("find_free_user_sid()");
         modelBuilder.Entity<User>().Property(u => u.Fields).HasColumnType("jsonb");
         modelBuilder.Entity<User>().Property(u => u.Names).HasColumnType("jsonb");
         modelBuilder.Entity<User>().Property(u => u.Pronouns).HasColumnType("jsonb");
         modelBuilder.Entity<User>().Property(u => u.CustomPreferences).HasColumnType("jsonb");
         modelBuilder.Entity<User>().Property(u => u.Settings).HasColumnType("jsonb");
 
+        modelBuilder.Entity<Member>().Property(m => m.Sid).HasDefaultValueSql("find_free_member_sid()");
         modelBuilder.Entity<Member>().Property(m => m.Fields).HasColumnType("jsonb");
         modelBuilder.Entity<Member>().Property(m => m.Names).HasColumnType("jsonb");
         modelBuilder.Entity<Member>().Property(m => m.Pronouns).HasColumnType("jsonb");

Foxnouns.Backend/Database/Migrations/20240926124950_AddSids.Designer.cs

@@ -0,0 +1,452 @@
+// <auto-generated />
+using System;
+using System.Collections.Generic;
+using Foxnouns.Backend.Database;
+using Foxnouns.Backend.Database.Models;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using NodaTime;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace Foxnouns.Backend.Database.Migrations
+{
+    [DbContext(typeof(DatabaseContext))]
+    [Migration("20240926124950_AddSids")]
+    partial class AddSids
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.7")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Application", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<string>("ClientId")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("client_id");
+
+                    b.Property<string>("ClientSecret")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("client_secret");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("name");
+
+                    b.Property<string[]>("RedirectUris")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("redirect_uris");
+
+                    b.Property<string[]>("Scopes")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("scopes");
+
+                    b.HasKey("Id")
+                        .HasName("pk_applications");
+
+                    b.ToTable("applications", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.AuthMethod", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<int>("AuthType")
+                        .HasColumnType("integer")
+                        .HasColumnName("auth_type");
+
+                    b.Property<long?>("FediverseApplicationId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("fediverse_application_id");
+
+                    b.Property<string>("RemoteId")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("remote_id");
+
+                    b.Property<string>("RemoteUsername")
+                        .HasColumnType("text")
+                        .HasColumnName("remote_username");
+
+                    b.Property<long>("UserId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("user_id");
+
+                    b.HasKey("Id")
+                        .HasName("pk_auth_methods");
+
+                    b.HasIndex("FediverseApplicationId")
+                        .HasDatabaseName("ix_auth_methods_fediverse_application_id");
+
+                    b.HasIndex("UserId")
+                        .HasDatabaseName("ix_auth_methods_user_id");
+
+                    b.ToTable("auth_methods", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.FediverseApplication", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<string>("ClientId")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("client_id");
+
+                    b.Property<string>("ClientSecret")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("client_secret");
+
+                    b.Property<string>("Domain")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("domain");
+
+                    b.Property<int>("InstanceType")
+                        .HasColumnType("integer")
+                        .HasColumnName("instance_type");
+
+                    b.HasKey("Id")
+                        .HasName("pk_fediverse_applications");
+
+                    b.ToTable("fediverse_applications", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Member", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<string>("Avatar")
+                        .HasColumnType("text")
+                        .HasColumnName("avatar");
+
+                    b.Property<string>("Bio")
+                        .HasColumnType("text")
+                        .HasColumnName("bio");
+
+                    b.Property<string>("DisplayName")
+                        .HasColumnType("text")
+                        .HasColumnName("display_name");
+
+                    b.Property<List<Field>>("Fields")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("fields");
+
+                    b.Property<string[]>("Links")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("links");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("name");
+
+                    b.Property<List<FieldEntry>>("Names")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("names");
+
+                    b.Property<List<Pronoun>>("Pronouns")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("pronouns");
+
+                    b.Property<string>("Sid")
+                        .HasColumnType("text")
+                        .HasColumnName("sid");
+
+                    b.Property<bool>("Unlisted")
+                        .HasColumnType("boolean")
+                        .HasColumnName("unlisted");
+
+                    b.Property<long>("UserId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("user_id");
+
+                    b.HasKey("Id")
+                        .HasName("pk_members");
+
+                    b.HasIndex("Sid")
+                        .IsUnique()
+                        .HasDatabaseName("ix_members_sid");
+
+                    b.HasIndex("UserId", "Name")
+                        .IsUnique()
+                        .HasDatabaseName("ix_members_user_id_name");
+
+                    b.ToTable("members", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.TemporaryKey", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<long>("Id"));
+
+                    b.Property<Instant>("Expires")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("expires");
+
+                    b.Property<string>("Key")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("key");
+
+                    b.Property<string>("Value")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("value");
+
+                    b.HasKey("Id")
+                        .HasName("pk_temporary_keys");
+
+                    b.HasIndex("Key")
+                        .IsUnique()
+                        .HasDatabaseName("ix_temporary_keys_key");
+
+                    b.ToTable("temporary_keys", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Token", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<long>("ApplicationId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("application_id");
+
+                    b.Property<Instant>("ExpiresAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("expires_at");
+
+                    b.Property<byte[]>("Hash")
+                        .IsRequired()
+                        .HasColumnType("bytea")
+                        .HasColumnName("hash");
+
+                    b.Property<bool>("ManuallyExpired")
+                        .HasColumnType("boolean")
+                        .HasColumnName("manually_expired");
+
+                    b.Property<string[]>("Scopes")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("scopes");
+
+                    b.Property<long>("UserId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("user_id");
+
+                    b.HasKey("Id")
+                        .HasName("pk_tokens");
+
+                    b.HasIndex("ApplicationId")
+                        .HasDatabaseName("ix_tokens_application_id");
+
+                    b.HasIndex("UserId")
+                        .HasDatabaseName("ix_tokens_user_id");
+
+                    b.ToTable("tokens", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.User", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<string>("Avatar")
+                        .HasColumnType("text")
+                        .HasColumnName("avatar");
+
+                    b.Property<string>("Bio")
+                        .HasColumnType("text")
+                        .HasColumnName("bio");
+
+                    b.Property<Dictionary<Snowflake, User.CustomPreference>>("CustomPreferences")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("custom_preferences");
+
+                    b.Property<bool>("Deleted")
+                        .HasColumnType("boolean")
+                        .HasColumnName("deleted");
+
+                    b.Property<Instant?>("DeletedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("deleted_at");
+
+                    b.Property<long?>("DeletedBy")
+                        .HasColumnType("bigint")
+                        .HasColumnName("deleted_by");
+
+                    b.Property<string>("DisplayName")
+                        .HasColumnType("text")
+                        .HasColumnName("display_name");
+
+                    b.Property<List<Field>>("Fields")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("fields");
+
+                    b.Property<Instant>("LastActive")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("last_active");
+
+                    b.Property<Instant>("LastSidReroll")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("last_sid_reroll");
+
+                    b.Property<string[]>("Links")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("links");
+
+                    b.Property<bool>("ListHidden")
+                        .HasColumnType("boolean")
+                        .HasColumnName("list_hidden");
+
+                    b.Property<string>("MemberTitle")
+                        .HasColumnType("text")
+                        .HasColumnName("member_title");
+
+                    b.Property<List<FieldEntry>>("Names")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("names");
+
+                    b.Property<string>("Password")
+                        .HasColumnType("text")
+                        .HasColumnName("password");
+
+                    b.Property<List<Pronoun>>("Pronouns")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("pronouns");
+
+                    b.Property<int>("Role")
+                        .HasColumnType("integer")
+                        .HasColumnName("role");
+
+                    b.Property<UserSettings>("Settings")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("settings");
+
+                    b.Property<string>("Sid")
+                        .HasColumnType("text")
+                        .HasColumnName("sid");
+
+                    b.Property<string>("Username")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("username");
+
+                    b.HasKey("Id")
+                        .HasName("pk_users");
+
+                    b.HasIndex("Sid")
+                        .IsUnique()
+                        .HasDatabaseName("ix_users_sid");
+
+                    b.HasIndex("Username")
+                        .IsUnique()
+                        .HasDatabaseName("ix_users_username");
+
+                    b.ToTable("users", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.AuthMethod", b =>
+                {
+                    b.HasOne("Foxnouns.Backend.Database.Models.FediverseApplication", "FediverseApplication")
+                        .WithMany()
+                        .HasForeignKey("FediverseApplicationId")
+                        .HasConstraintName("fk_auth_methods_fediverse_applications_fediverse_application_id");
+
+                    b.HasOne("Foxnouns.Backend.Database.Models.User", "User")
+                        .WithMany("AuthMethods")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_auth_methods_users_user_id");
+
+                    b.Navigation("FediverseApplication");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Member", b =>
+                {
+                    b.HasOne("Foxnouns.Backend.Database.Models.User", "User")
+                        .WithMany("Members")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_members_users_user_id");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Token", b =>
+                {
+                    b.HasOne("Foxnouns.Backend.Database.Models.Application", "Application")
+                        .WithMany()
+                        .HasForeignKey("ApplicationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_tokens_applications_application_id");
+
+                    b.HasOne("Foxnouns.Backend.Database.Models.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_tokens_users_user_id");
+
+                    b.Navigation("Application");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.User", b =>
+                {
+                    b.Navigation("AuthMethods");
+
+                    b.Navigation("Members");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

Foxnouns.Backend/Database/Migrations/20240926124950_AddSids.cs

@@ -0,0 +1,98 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using NodaTime;
+
+#nullable disable
+
+namespace Foxnouns.Backend.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddSids : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "sid",
+                table: "users",
+                type: "text",
+                nullable: true);
+
+            migrationBuilder.AddColumn<Instant>(
+                name: "last_sid_reroll",
+                table: "users",
+                type: "timestamp with time zone",
+                nullable: false,
+                defaultValueSql: "now() - '1 hour'::interval");
+
+            migrationBuilder.AddColumn<string>(
+                name: "sid",
+                table: "members",
+                type: "text",
+                nullable: true);
+
+            migrationBuilder.CreateIndex(
+                name: "ix_users_sid",
+                table: "users",
+                column: "sid",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "ix_members_sid",
+                table: "members",
+                column: "sid",
+                unique: true);
+
+            migrationBuilder.Sql(@"create function generate_sid(len int) returns text as $$
+    select string_agg(substr('abcdefghijklmnopqrstuvwxyz', ceil(random() * 26)::integer, 1), '') from generate_series(1, len)
+$$ language sql volatile;
+");
+            migrationBuilder.Sql(@"create function find_free_user_sid() returns text as $$
+declare new_sid text;
+begin
+    loop
+        new_sid := generate_sid(5);
+        if not exists (select 1 from users where sid = new_sid) then return new_sid; end if;
+    end loop;
+end
+$$ language plpgsql volatile;
+");
+            migrationBuilder.Sql(@"create function find_free_member_sid() returns text as $$
+declare new_sid text;
+begin
+    loop
+        new_sid := generate_sid(6);
+        if not exists (select 1 from members where sid = new_sid) then return new_sid; end if;
+    end loop;
+end
+$$ language plpgsql volatile;");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql("drop function find_free_member_sid;");
+            migrationBuilder.Sql("drop function find_free_user_sid;");
+            migrationBuilder.Sql("drop function generate_sid;");
+
+            migrationBuilder.DropIndex(
+                name: "ix_users_sid",
+                table: "users");
+
+            migrationBuilder.DropIndex(
+                name: "ix_members_sid",
+                table: "members");
+
+            migrationBuilder.DropColumn(
+                name: "sid",
+                table: "users");
+
+            migrationBuilder.DropColumn(
+                name: "last_sid_reroll",
+                table: "users");
+
+            migrationBuilder.DropColumn(
+                name: "sid",
+                table: "members");
+        }
+    }
+}

Foxnouns.Backend/Database/Migrations/20240926130208_NonNullableSids.Designer.cs

@@ -0,0 +1,458 @@
+// <auto-generated />
+using System;
+using System.Collections.Generic;
+using Foxnouns.Backend.Database;
+using Foxnouns.Backend.Database.Models;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using NodaTime;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace Foxnouns.Backend.Database.Migrations
+{
+    [DbContext(typeof(DatabaseContext))]
+    [Migration("20240926130208_NonNullableSids")]
+    partial class NonNullableSids
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.7")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Application", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<string>("ClientId")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("client_id");
+
+                    b.Property<string>("ClientSecret")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("client_secret");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("name");
+
+                    b.Property<string[]>("RedirectUris")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("redirect_uris");
+
+                    b.Property<string[]>("Scopes")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("scopes");
+
+                    b.HasKey("Id")
+                        .HasName("pk_applications");
+
+                    b.ToTable("applications", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.AuthMethod", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<int>("AuthType")
+                        .HasColumnType("integer")
+                        .HasColumnName("auth_type");
+
+                    b.Property<long?>("FediverseApplicationId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("fediverse_application_id");
+
+                    b.Property<string>("RemoteId")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("remote_id");
+
+                    b.Property<string>("RemoteUsername")
+                        .HasColumnType("text")
+                        .HasColumnName("remote_username");
+
+                    b.Property<long>("UserId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("user_id");
+
+                    b.HasKey("Id")
+                        .HasName("pk_auth_methods");
+
+                    b.HasIndex("FediverseApplicationId")
+                        .HasDatabaseName("ix_auth_methods_fediverse_application_id");
+
+                    b.HasIndex("UserId")
+                        .HasDatabaseName("ix_auth_methods_user_id");
+
+                    b.ToTable("auth_methods", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.FediverseApplication", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<string>("ClientId")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("client_id");
+
+                    b.Property<string>("ClientSecret")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("client_secret");
+
+                    b.Property<string>("Domain")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("domain");
+
+                    b.Property<int>("InstanceType")
+                        .HasColumnType("integer")
+                        .HasColumnName("instance_type");
+
+                    b.HasKey("Id")
+                        .HasName("pk_fediverse_applications");
+
+                    b.ToTable("fediverse_applications", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Member", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<string>("Avatar")
+                        .HasColumnType("text")
+                        .HasColumnName("avatar");
+
+                    b.Property<string>("Bio")
+                        .HasColumnType("text")
+                        .HasColumnName("bio");
+
+                    b.Property<string>("DisplayName")
+                        .HasColumnType("text")
+                        .HasColumnName("display_name");
+
+                    b.Property<List<Field>>("Fields")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("fields");
+
+                    b.Property<string[]>("Links")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("links");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("name");
+
+                    b.Property<List<FieldEntry>>("Names")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("names");
+
+                    b.Property<List<Pronoun>>("Pronouns")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("pronouns");
+
+                    b.Property<string>("Sid")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("text")
+                        .HasColumnName("sid")
+                        .HasDefaultValueSql("find_free_member_sid()");
+
+                    b.Property<bool>("Unlisted")
+                        .HasColumnType("boolean")
+                        .HasColumnName("unlisted");
+
+                    b.Property<long>("UserId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("user_id");
+
+                    b.HasKey("Id")
+                        .HasName("pk_members");
+
+                    b.HasIndex("Sid")
+                        .IsUnique()
+                        .HasDatabaseName("ix_members_sid");
+
+                    b.HasIndex("UserId", "Name")
+                        .IsUnique()
+                        .HasDatabaseName("ix_members_user_id_name");
+
+                    b.ToTable("members", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.TemporaryKey", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<long>("Id"));
+
+                    b.Property<Instant>("Expires")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("expires");
+
+                    b.Property<string>("Key")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("key");
+
+                    b.Property<string>("Value")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("value");
+
+                    b.HasKey("Id")
+                        .HasName("pk_temporary_keys");
+
+                    b.HasIndex("Key")
+                        .IsUnique()
+                        .HasDatabaseName("ix_temporary_keys_key");
+
+                    b.ToTable("temporary_keys", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Token", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<long>("ApplicationId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("application_id");
+
+                    b.Property<Instant>("ExpiresAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("expires_at");
+
+                    b.Property<byte[]>("Hash")
+                        .IsRequired()
+                        .HasColumnType("bytea")
+                        .HasColumnName("hash");
+
+                    b.Property<bool>("ManuallyExpired")
+                        .HasColumnType("boolean")
+                        .HasColumnName("manually_expired");
+
+                    b.Property<string[]>("Scopes")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("scopes");
+
+                    b.Property<long>("UserId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("user_id");
+
+                    b.HasKey("Id")
+                        .HasName("pk_tokens");
+
+                    b.HasIndex("ApplicationId")
+                        .HasDatabaseName("ix_tokens_application_id");
+
+                    b.HasIndex("UserId")
+                        .HasDatabaseName("ix_tokens_user_id");
+
+                    b.ToTable("tokens", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.User", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint")
+                        .HasColumnName("id");
+
+                    b.Property<string>("Avatar")
+                        .HasColumnType("text")
+                        .HasColumnName("avatar");
+
+                    b.Property<string>("Bio")
+                        .HasColumnType("text")
+                        .HasColumnName("bio");
+
+                    b.Property<Dictionary<Snowflake, User.CustomPreference>>("CustomPreferences")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("custom_preferences");
+
+                    b.Property<bool>("Deleted")
+                        .HasColumnType("boolean")
+                        .HasColumnName("deleted");
+
+                    b.Property<Instant?>("DeletedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("deleted_at");
+
+                    b.Property<long?>("DeletedBy")
+                        .HasColumnType("bigint")
+                        .HasColumnName("deleted_by");
+
+                    b.Property<string>("DisplayName")
+                        .HasColumnType("text")
+                        .HasColumnName("display_name");
+
+                    b.Property<List<Field>>("Fields")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("fields");
+
+                    b.Property<Instant>("LastActive")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("last_active");
+
+                    b.Property<Instant>("LastSidReroll")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("last_sid_reroll");
+
+                    b.Property<string[]>("Links")
+                        .IsRequired()
+                        .HasColumnType("text[]")
+                        .HasColumnName("links");
+
+                    b.Property<bool>("ListHidden")
+                        .HasColumnType("boolean")
+                        .HasColumnName("list_hidden");
+
+                    b.Property<string>("MemberTitle")
+                        .HasColumnType("text")
+                        .HasColumnName("member_title");
+
+                    b.Property<List<FieldEntry>>("Names")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("names");
+
+                    b.Property<string>("Password")
+                        .HasColumnType("text")
+                        .HasColumnName("password");
+
+                    b.Property<List<Pronoun>>("Pronouns")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("pronouns");
+
+                    b.Property<int>("Role")
+                        .HasColumnType("integer")
+                        .HasColumnName("role");
+
+                    b.Property<UserSettings>("Settings")
+                        .IsRequired()
+                        .HasColumnType("jsonb")
+                        .HasColumnName("settings");
+
+                    b.Property<string>("Sid")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("text")
+                        .HasColumnName("sid")
+                        .HasDefaultValueSql("find_free_user_sid()");
+
+                    b.Property<string>("Username")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("username");
+
+                    b.HasKey("Id")
+                        .HasName("pk_users");
+
+                    b.HasIndex("Sid")
+                        .IsUnique()
+                        .HasDatabaseName("ix_users_sid");
+
+                    b.HasIndex("Username")
+                        .IsUnique()
+                        .HasDatabaseName("ix_users_username");
+
+                    b.ToTable("users", (string)null);
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.AuthMethod", b =>
+                {
+                    b.HasOne("Foxnouns.Backend.Database.Models.FediverseApplication", "FediverseApplication")
+                        .WithMany()
+                        .HasForeignKey("FediverseApplicationId")
+                        .HasConstraintName("fk_auth_methods_fediverse_applications_fediverse_application_id");
+
+                    b.HasOne("Foxnouns.Backend.Database.Models.User", "User")
+                        .WithMany("AuthMethods")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_auth_methods_users_user_id");
+
+                    b.Navigation("FediverseApplication");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Member", b =>
+                {
+                    b.HasOne("Foxnouns.Backend.Database.Models.User", "User")
+                        .WithMany("Members")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_members_users_user_id");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.Token", b =>
+                {
+                    b.HasOne("Foxnouns.Backend.Database.Models.Application", "Application")
+                        .WithMany()
+                        .HasForeignKey("ApplicationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_tokens_applications_application_id");
+
+                    b.HasOne("Foxnouns.Backend.Database.Models.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_tokens_users_user_id");
+
+                    b.Navigation("Application");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("Foxnouns.Backend.Database.Models.User", b =>
+                {
+                    b.Navigation("AuthMethods");
+
+                    b.Navigation("Members");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

Foxnouns.Backend/Database/Migrations/20240926130208_NonNullableSids.cs

@@ -0,0 +1,57 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using NodaTime;
+
+#nullable disable
+
+namespace Foxnouns.Backend.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class NonNullableSids : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "sid",
+                table: "users",
+                type: "text",
+                nullable: false,
+                defaultValueSql: "find_free_user_sid()",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "sid",
+                table: "members",
+                type: "text",
+                nullable: false,
+                defaultValueSql: "find_free_member_sid()",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "sid",
+                table: "users",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldDefaultValueSql: "find_free_user_sid()");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "sid",
+                table: "members",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldDefaultValueSql: "find_free_member_sid()");
+        }
+    }
+}

Foxnouns.Backend/Database/Migrations/DatabaseContextModelSnapshot.cs

@@ -175,6 +175,13 @@ namespace Foxnouns.Backend.Database.Migrations
                         .HasColumnType("jsonb")
                         .HasColumnName("pronouns");
 
+                    b.Property<string>("Sid")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("text")
+                        .HasColumnName("sid")
+                        .HasDefaultValueSql("find_free_member_sid()");
+
                     b.Property<bool>("Unlisted")
                         .HasColumnType("boolean")
                         .HasColumnName("unlisted");
@@ -186,6 +193,10 @@ namespace Foxnouns.Backend.Database.Migrations
                     b.HasKey("Id")
                         .HasName("pk_members");
 
+                    b.HasIndex("Sid")
+                        .IsUnique()
+                        .HasDatabaseName("ix_members_sid");
+
                     b.HasIndex("UserId", "Name")
                         .IsUnique()
                         .HasDatabaseName("ix_members_user_id_name");
@@ -314,6 +325,10 @@ namespace Foxnouns.Backend.Database.Migrations
                         .HasColumnType("timestamp with time zone")
                         .HasColumnName("last_active");
 
+                    b.Property<Instant>("LastSidReroll")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("last_sid_reroll");
+
                     b.Property<string[]>("Links")
                         .IsRequired()
                         .HasColumnType("text[]")
@@ -350,6 +365,13 @@ namespace Foxnouns.Backend.Database.Migrations
                         .HasColumnType("jsonb")
                         .HasColumnName("settings");
 
+                    b.Property<string>("Sid")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("text")
+                        .HasColumnName("sid")
+                        .HasDefaultValueSql("find_free_user_sid()");
+
                     b.Property<string>("Username")
                         .IsRequired()
                         .HasColumnType("text")
@@ -358,6 +380,10 @@ namespace Foxnouns.Backend.Database.Migrations
                     b.HasKey("Id")
                         .HasName("pk_users");
 
+                    b.HasIndex("Sid")
+                        .IsUnique()
+                        .HasDatabaseName("ix_users_sid");
+
                     b.HasIndex("Username")
                         .IsUnique()
                         .HasDatabaseName("ix_users_username");

Foxnouns.Backend/Database/Models/Member.cs

@@ -3,6 +3,7 @@ namespace Foxnouns.Backend.Database.Models;
 public class Member : BaseModel
 {
     public required string Name { get; set; }
+    public string Sid { get; set; } = string.Empty;
     public string? DisplayName { get; set; }
     public string? Bio { get; set; }
     public string? Avatar { get; set; }

Foxnouns.Backend/Database/Models/User.cs

@@ -8,6 +8,7 @@ namespace Foxnouns.Backend.Database.Models;
 public class User : BaseModel
 {
     public required string Username { get; set; }
+    public string Sid { get; set; } = string.Empty;
     public string? DisplayName { get; set; }
     public string? Bio { get; set; }
     public string? MemberTitle { get; set; }
@@ -28,6 +29,7 @@ public class User : BaseModel
     public UserSettings Settings { get; set; } = new();
 
     public required Instant LastActive { get; set; }
+    public Instant LastSidReroll { get; set; }
 
     public bool Deleted { get; set; }
     public Instant? DeletedAt { get; set; }