# Pleroma: A lightweight social networking server # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/> # SPDX-License-Identifier: AGPL-3.0-only defmodule Pleroma.Chat do use Ecto.Schema import Ecto.Changeset import Ecto.Query alias Pleroma.Chat alias Pleroma.Repo alias Pleroma.User @moduledoc """ Chat keeps a reference to ChatMessage conversations between a user and an recipient. The recipient can be a user (for now) or a group (not implemented yet). It is a helper only, to make it easy to display a list of chats with other people, ordered by last bump. The actual messages are retrieved by querying the recipients of the ChatMessages. """ @type t :: %__MODULE__{} @primary_key {:id, FlakeId.Ecto.CompatType, autogenerate: true} schema "chats" do belongs_to(:user, User, type: FlakeId.Ecto.CompatType) field(:recipient, :string) timestamps() end def changeset(struct, params) do struct |> cast(params, [:user_id, :recipient]) |> validate_change(:recipient, fn :recipient, recipient -> case User.get_cached_by_ap_id(recipient) do nil -> [recipient: "must be an existing user"] _ -> [] end end) |> validate_required([:user_id, :recipient]) |> unique_constraint(:user_id, name: :chats_user_id_recipient_index) end @spec get_by_user_and_id(User.t(), FlakeId.Ecto.CompatType.t()) :: {:ok, t()} | {:error, :not_found} def get_by_user_and_id(%User{id: user_id}, id) do from(c in __MODULE__, where: c.id == ^id, where: c.user_id == ^user_id ) |> Repo.find_resource() end @spec get_by_id(FlakeId.Ecto.CompatType.t()) :: t() | nil def get_by_id(id) do Repo.get(__MODULE__, id) end @spec get(FlakeId.Ecto.CompatType.t(), String.t()) :: t() | nil def get(user_id, recipient) do Repo.get_by(__MODULE__, user_id: user_id, recipient: recipient) end @spec get_or_create(FlakeId.Ecto.CompatType.t(), String.t()) :: {:ok, t()} | {:error, Ecto.Changeset.t()} def get_or_create(user_id, recipient) do %__MODULE__{} |> changeset(%{user_id: user_id, recipient: recipient}) |> Repo.insert( # Need to set something, otherwise we get nothing back at all on_conflict: [set: [recipient: recipient]], returning: true, conflict_target: [:user_id, :recipient] ) end @spec bump_or_create(FlakeId.Ecto.CompatType.t(), String.t()) :: {:ok, t()} | {:error, Ecto.Changeset.t()} def bump_or_create(user_id, recipient) do %__MODULE__{} |> changeset(%{user_id: user_id, recipient: recipient}) |> Repo.insert( on_conflict: [set: [updated_at: NaiveDateTime.utc_now()]], returning: true, conflict_target: [:user_id, :recipient] ) end @spec for_user_query(FlakeId.Ecto.CompatType.t()) :: Ecto.Query.t() def for_user_query(user_id) do from(c in Chat, where: c.user_id == ^user_id, order_by: [desc: c.updated_at] ) end end