144 lines
		
	
	
	
		
			3.8 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
			
		
		
	
	
			144 lines
		
	
	
	
		
			3.8 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Notification do
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  use Ecto.Schema
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  alias Pleroma.{User, Activity, Notification, Repo}
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  alias Pleroma.Web.CommonAPI.Utils
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  import Ecto.Query
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  schema "notifications" do
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    field(:seen, :boolean, default: false)
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    belongs_to(:user, User, type: Pleroma.FlakeId)
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    belongs_to(:activity, Activity, type: Pleroma.FlakeId)
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    timestamps()
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  end
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  # TODO: Make generic and unify (see activity_pub.ex)
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  defp restrict_max(query, %{"max_id" => max_id}) do
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    from(activity in query, where: activity.id < ^max_id)
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  end
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  defp restrict_max(query, _), do: query
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  defp restrict_since(query, %{"since_id" => since_id}) do
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    from(activity in query, where: activity.id > ^since_id)
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  end
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  defp restrict_since(query, _), do: query
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  def for_user(user, opts \\ %{}) do
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    query =
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      from(
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        n in Notification,
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        where: n.user_id == ^user.id,
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        order_by: [desc: n.id],
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        preload: [:activity],
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        limit: 20
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      )
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    query =
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      query
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      |> restrict_since(opts)
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      |> restrict_max(opts)
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    Repo.all(query)
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  end
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  def set_read_up_to(%{id: user_id} = _user, id) do
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    query =
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      from(
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        n in Notification,
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        where: n.user_id == ^user_id,
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        where: n.id <= ^id,
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        update: [
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          set: [seen: true]
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        ]
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      )
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    Repo.update_all(query, [])
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  end
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  def get(%{id: user_id} = _user, id) do
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    query =
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      from(
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        n in Notification,
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        where: n.id == ^id,
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        preload: [:activity]
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      )
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    notification = Repo.one(query)
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    case notification do
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      %{user_id: ^user_id} ->
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        {:ok, notification}
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      _ ->
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        {:error, "Cannot get notification"}
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    end
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  end
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  def clear(user) do
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    from(n in Notification, where: n.user_id == ^user.id)
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    |> Repo.delete_all()
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  end
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  def dismiss(%{id: user_id} = _user, id) do
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    notification = Repo.get(Notification, id)
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    case notification do
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      %{user_id: ^user_id} ->
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        Repo.delete(notification)
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      _ ->
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        {:error, "Cannot dismiss notification"}
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    end
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  end
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  def create_notifications(%Activity{data: %{"to" => _, "type" => type}} = activity)
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      when type in ["Create", "Like", "Announce", "Follow"] do
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    users = get_notified_from_activity(activity)
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    notifications = Enum.map(users, fn user -> create_notification(activity, user) end)
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    {:ok, notifications}
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  end
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  def create_notifications(_), do: {:ok, []}
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  # TODO move to sql, too.
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  def create_notification(%Activity{} = activity, %User{} = user) do
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    unless User.blocks?(user, %{ap_id: activity.data["actor"]}) or
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             user.ap_id == activity.data["actor"] or
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             (activity.data["type"] == "Follow" and
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                Enum.any?(Notification.for_user(user), fn notif ->
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                  notif.activity.data["type"] == "Follow" and
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                    notif.activity.data["actor"] == activity.data["actor"]
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                end)) do
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      notification = %Notification{user_id: user.id, activity: activity}
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      {:ok, notification} = Repo.insert(notification)
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      Pleroma.Web.Streamer.stream("user", notification)
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      Pleroma.Web.Push.send(notification)
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      notification
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    end
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  end
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  def get_notified_from_activity(activity, local_only \\ true)
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  def get_notified_from_activity(
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        %Activity{data: %{"to" => _, "type" => type} = _data} = activity,
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        local_only
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      )
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      when type in ["Create", "Like", "Announce", "Follow"] do
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    recipients =
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      []
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      |> Utils.maybe_notify_to_recipients(activity)
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      |> Utils.maybe_notify_mentioned_recipients(activity)
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      |> Enum.uniq()
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    User.get_users_from_set(recipients, local_only)
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  end
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  def get_notified_from_activity(_, _local_only), do: []
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end
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