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diff --git a/lib/pleroma/bookmark_folder.ex b/lib/pleroma/bookmark_folder.ex
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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2024 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.BookmarkFolder do
+  use Ecto.Schema
+
+  import Ecto.Changeset
+  import Ecto.Query
+
+  alias Pleroma.BookmarkFolder
+  alias Pleroma.Emoji
+  alias Pleroma.Repo
+  alias Pleroma.User
+
+  @type t :: %__MODULE__{}
+  @primary_key {:id, FlakeId.Ecto.CompatType, autogenerate: true}
+
+  schema "bookmark_folders" do
+    field(:name, :string)
+    field(:emoji, :string)
+
+    belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
+
+    timestamps()
+  end
+
+  def get_by_id(id), do: Repo.get_by(BookmarkFolder, id: id)
+
+  def create(user_id, name, emoji \\ nil) do
+    %BookmarkFolder{}
+    |> cast(
+      %{
+        user_id: user_id,
+        name: name,
+        emoji: emoji
+      },
+      [:user_id, :name, :emoji]
+    )
+    |> validate_required([:user_id, :name])
+    |> fix_emoji()
+    |> validate_emoji()
+    |> unique_constraint([:user_id, :name])
+    |> Repo.insert()
+  end
+
+  def update(folder_id, name, emoji \\ nil) do
+    get_by_id(folder_id)
+    |> cast(
+      %{
+        name: name,
+        emoji: emoji
+      },
+      [:name, :emoji]
+    )
+    |> fix_emoji()
+    |> validate_emoji()
+    |> unique_constraint([:user_id, :name])
+    |> Repo.update()
+  end
+
+  defp fix_emoji(changeset) do
+    with {:emoji_field, emoji} when is_binary(emoji) <-
+           {:emoji_field, get_field(changeset, :emoji)},
+         {:fixed_emoji, emoji} <-
+           {:fixed_emoji,
+            emoji
+            |> Pleroma.Emoji.fully_qualify_emoji()
+            |> Pleroma.Emoji.maybe_quote()} do
+      put_change(changeset, :emoji, emoji)
+    else
+      {:emoji_field, _} -> changeset
+    end
+  end
+
+  defp validate_emoji(changeset) do
+    validate_change(changeset, :emoji, fn
+      :emoji, nil ->
+        []
+
+      :emoji, emoji ->
+        if Emoji.unicode?(emoji) or valid_local_custom_emoji?(emoji) do
+          []
+        else
+          [emoji: "Invalid emoji"]
+        end
+    end)
+  end
+
+  defp valid_local_custom_emoji?(emoji) do
+    with %{file: _path} <- Emoji.get(emoji) do
+      true
+    else
+      _ -> false
+    end
+  end
+
+  def delete(folder_id) do
+    BookmarkFolder
+    |> Repo.get_by(id: folder_id)
+    |> Repo.delete()
+  end
+
+  def for_user(user_id) do
+    BookmarkFolder
+    |> where(user_id: ^user_id)
+    |> Repo.all()
+  end
+
+  def belongs_to_user?(folder_id, user_id) do
+    BookmarkFolder
+    |> where(id: ^folder_id, user_id: ^user_id)
+    |> Repo.exists?()
+  end
+end