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- # Pleroma: A lightweight social networking server
- # Copyright © 2017-2021 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
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