akkoma/lib/pleroma/notification.ex

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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Notification do
use Ecto.Schema
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alias Ecto.Multi
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alias Pleroma.Activity
alias Pleroma.Marker
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alias Pleroma.Notification
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alias Pleroma.Object
alias Pleroma.Pagination
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alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.CommonAPI.Utils
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alias Pleroma.Web.Push
alias Pleroma.Web.Streamer
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import Ecto.Query
import Ecto.Changeset
require Logger
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@type t :: %__MODULE__{}
schema "notifications" do
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field(:seen, :boolean, default: false)
belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
belongs_to(:activity, Activity, type: FlakeId.Ecto.CompatType)
timestamps()
end
def changeset(%Notification{} = notification, attrs) do
notification
|> cast(attrs, [:seen])
end
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@spec notifications_info_query(User.t()) :: Ecto.Queryable.t()
def notifications_info_query(user) do
from(q in Pleroma.Notification,
where: q.user_id == ^user.id,
select: %{
timeline: "notifications",
user_id: type(^user.id, :string),
unread_count: fragment("SUM( CASE WHEN seen = false THEN 1 ELSE 0 END )"),
last_read_id:
type(fragment("MAX( CASE WHEN seen = true THEN id ELSE null END )"), :string)
}
)
end
def for_user_query(user, opts \\ []) do
Notification
|> where(user_id: ^user.id)
|> where(
[n, a],
fragment(
"? not in (SELECT ap_id FROM users WHERE deactivated = 'true')",
a.actor
)
)
|> join(:inner, [n], activity in assoc(n, :activity))
|> join(:left, [n, a], object in Object,
on:
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fragment(
"(?->>'id') = COALESCE((? -> 'object'::text) ->> 'id'::text)",
object.data,
a.data
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)
)
|> preload([n, a, o], activity: {a, object: o})
|> exclude_muted(user, opts)
|> exclude_blocked(user)
|> exclude_visibility(opts)
end
defp exclude_blocked(query, user) do
query
|> where([n, a], a.actor not in ^user.blocks)
|> where(
[n, a],
fragment("substring(? from '.*://([^/]*)')", a.actor) not in ^user.domain_blocks
)
end
defp exclude_muted(query, _, %{with_muted: true}) do
query
end
defp exclude_muted(query, user, _opts) do
query
|> where([n, a], a.actor not in ^user.muted_notifications)
|> join(:left, [n, a], tm in Pleroma.ThreadMute,
on: tm.user_id == ^user.id and tm.context == fragment("?->>'context'", a.data)
)
|> where([n, a, o, tm], is_nil(tm.user_id))
end
@valid_visibilities ~w[direct unlisted public private]
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defp exclude_visibility(query, %{exclude_visibilities: visibility})
when is_list(visibility) do
if Enum.all?(visibility, &(&1 in @valid_visibilities)) do
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query
|> where(
[n, a],
not fragment(
"activity_visibility(?, ?, ?) = ANY (?)",
a.actor,
a.recipients,
a.data,
^visibility
)
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)
else
Logger.error("Could not exclude visibility to #{visibility}")
query
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end
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end
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defp exclude_visibility(query, %{exclude_visibilities: visibility})
when visibility in @valid_visibilities do
query
|> where(
[n, a],
not fragment(
"activity_visibility(?, ?, ?) = (?)",
a.actor,
a.recipients,
a.data,
^visibility
)
)
end
defp exclude_visibility(query, %{exclude_visibilities: visibility})
when visibility not in @valid_visibilities do
Logger.error("Could not exclude visibility to #{visibility}")
query
end
defp exclude_visibility(query, _visibility), do: query
def for_user(user, opts \\ %{}) do
user
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|> for_user_query(opts)
|> Pagination.fetch_paginated(opts)
end
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@doc """
Returns notifications for user received since given date.
## Examples
iex> Pleroma.Notification.for_user_since(%Pleroma.User{}, ~N[2019-04-13 11:22:33])
[%Pleroma.Notification{}, %Pleroma.Notification{}]
iex> Pleroma.Notification.for_user_since(%Pleroma.User{}, ~N[2019-04-15 11:22:33])
[]
"""
@spec for_user_since(Pleroma.User.t(), NaiveDateTime.t()) :: [t()]
def for_user_since(user, date) do
from(n in for_user_query(user),
where: n.updated_at > ^date
)
|> Repo.all()
end
def set_read_up_to(%{id: user_id} = user, id) do
query =
from(
n in Notification,
where: n.user_id == ^user_id,
where: n.id <= ^id,
where: n.seen == false,
# Ideally we would preload object and activities here
# but Ecto does not support preloads in update_all
select: n.id
)
{:ok, %{ids: {_, notification_ids}}} =
Multi.new()
|> Multi.update_all(:ids, query, set: [seen: true, updated_at: NaiveDateTime.utc_now()])
|> Marker.multi_set_unread_count(user, "notifications")
|> Repo.transaction()
Notification
|> where([n], n.id in ^notification_ids)
|> join(:inner, [n], activity in assoc(n, :activity))
|> join(:left, [n, a], object in Object,
on:
fragment(
"(?->>'id') = COALESCE((? -> 'object'::text) ->> 'id'::text)",
object.data,
a.data
)
)
|> preload([n, a, o], activity: {a, object: o})
|> Repo.all()
end
@spec read_one(User.t(), String.t()) ::
{:ok, Notification.t()} | {:error, Ecto.Changeset.t()} | nil
def read_one(%User{} = user, notification_id) do
with {:ok, %Notification{} = notification} <- get(user, notification_id) do
Multi.new()
|> Multi.update(:update, changeset(notification, %{seen: true}))
|> Marker.multi_set_unread_count(user, "notifications")
|> Repo.transaction()
|> case do
{:ok, %{update: notification}} -> {:ok, notification}
{:error, :update, changeset, _} -> {:error, changeset}
end
end
end
def get(%{id: user_id} = _user, id) do
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query =
from(
n in Notification,
where: n.id == ^id,
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join: activity in assoc(n, :activity),
preload: [activity: activity]
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)
notification = Repo.one(query)
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case notification do
%{user_id: ^user_id} ->
{:ok, notification}
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_ ->
{:error, "Cannot get notification"}
end
end
def clear(user) do
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from(n in Notification, where: n.user_id == ^user.id)
|> Repo.delete_all()
end
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def destroy_multiple(%{id: user_id} = _user, ids) do
from(n in Notification,
where: n.id in ^ids,
where: n.user_id == ^user_id
)
|> Repo.delete_all()
end
def dismiss(%{id: user_id} = _user, id) do
notification = Repo.get(Notification, id)
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case notification do
%{user_id: ^user_id} ->
Repo.delete(notification)
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_ ->
{:error, "Cannot dismiss notification"}
end
end
def create_notifications(%Activity{data: %{"to" => _, "type" => "Create"}} = activity) do
object = Object.normalize(activity)
unless object && object.data["type"] == "Answer" do
notifications =
activity
|> get_notified_from_activity()
|> Enum.map(&create_notification(activity, &1))
{:ok, notifications}
else
{:ok, []}
end
end
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def create_notifications(%Activity{data: %{"to" => _, "type" => type}} = activity)
when type in ["Like", "Announce", "Follow"] do
notifications =
activity
|> get_notified_from_activity
|> Enum.map(&create_notification(activity, &1))
{:ok, notifications}
end
def create_notifications(_), do: {:ok, []}
# TODO move to sql, too.
def create_notification(%Activity{} = activity, %User{} = user) do
unless skip?(activity, user) do
{:ok, %{notification: notification}} =
Multi.new()
|> Multi.insert(:notification, %Notification{user_id: user.id, activity: activity})
|> Marker.multi_set_unread_count(user, "notifications")
|> Repo.transaction()
["user", "user:notification"]
|> Streamer.stream(notification)
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Push.send(notification)
notification
end
end
def get_notified_from_activity(activity, local_only \\ true)
def get_notified_from_activity(
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%Activity{data: %{"to" => _, "type" => type} = _data} = activity,
local_only
)
when type in ["Create", "Like", "Announce", "Follow"] do
recipients =
[]
|> Utils.maybe_notify_to_recipients(activity)
|> Utils.maybe_notify_mentioned_recipients(activity)
|> Utils.maybe_notify_subscribers(activity)
|> Enum.uniq()
User.get_users_from_set(recipients, local_only)
end
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def get_notified_from_activity(_, _local_only), do: []
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@spec skip?(Activity.t(), User.t()) :: boolean()
def skip?(activity, user) do
[
:self,
:followers,
:follows,
:non_followers,
:non_follows,
:recently_followed
]
|> Enum.any?(&skip?(&1, activity, user))
end
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@spec skip?(atom(), Activity.t(), User.t()) :: boolean()
def skip?(:self, activity, user) do
activity.data["actor"] == user.ap_id
end
def skip?(
:followers,
activity,
%{notification_settings: %{"followers" => false}} = user
) do
actor = activity.data["actor"]
follower = User.get_cached_by_ap_id(actor)
User.following?(follower, user)
end
def skip?(
:non_followers,
activity,
%{notification_settings: %{"non_followers" => false}} = user
) do
actor = activity.data["actor"]
follower = User.get_cached_by_ap_id(actor)
!User.following?(follower, user)
end
def skip?(:follows, activity, %{notification_settings: %{"follows" => false}} = user) do
actor = activity.data["actor"]
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followed = User.get_cached_by_ap_id(actor)
User.following?(user, followed)
end
def skip?(
:non_follows,
activity,
%{notification_settings: %{"non_follows" => false}} = user
) do
actor = activity.data["actor"]
followed = User.get_cached_by_ap_id(actor)
!User.following?(user, followed)
end
def skip?(:recently_followed, %{data: %{"type" => "Follow"}} = activity, user) do
actor = activity.data["actor"]
Notification.for_user(user)
|> Enum.any?(fn
%{activity: %{data: %{"type" => "Follow", "actor" => ^actor}}} -> true
_ -> false
end)
end
def skip?(_, _, _), do: false
end