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668 lines
19 KiB
Elixir
668 lines
19 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2021 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 Ecto.Multi
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alias Pleroma.Activity
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alias Pleroma.FollowingRelationship
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alias Pleroma.Marker
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alias Pleroma.Notification
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alias Pleroma.Object
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alias Pleroma.Pagination
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alias Pleroma.Repo
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alias Pleroma.ThreadMute
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alias Pleroma.User
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alias Pleroma.Web.CommonAPI
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alias Pleroma.Web.CommonAPI.Utils
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alias Pleroma.Web.Push
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alias Pleroma.Web.Streamer
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import Ecto.Query
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import Ecto.Changeset
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require Logger
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@type t :: %__MODULE__{}
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@include_muted_option :with_muted
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schema "notifications" do
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field(:seen, :boolean, default: false)
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# This is an enum type in the database. If you add a new notification type,
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# remember to add a migration to add it to the `notifications_type` enum
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# as well.
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field(:type, :string)
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belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
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belongs_to(:activity, Activity, type: FlakeId.Ecto.CompatType)
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timestamps()
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end
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def update_notification_type(user, activity) do
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with %__MODULE__{} = notification <-
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Repo.get_by(__MODULE__, user_id: user.id, activity_id: activity.id) do
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type =
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activity
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|> type_from_activity()
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notification
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|> changeset(%{type: type})
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|> Repo.update()
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end
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end
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@spec unread_notifications_count(User.t()) :: integer()
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def unread_notifications_count(%User{id: user_id}) do
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from(q in __MODULE__,
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where: q.user_id == ^user_id and q.seen == false
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)
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|> Repo.aggregate(:count, :id)
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end
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@notification_types ~w{
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favourite
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follow
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follow_request
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mention
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move
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pleroma:chat_mention
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pleroma:emoji_reaction
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pleroma:report
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reblog
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}
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def changeset(%Notification{} = notification, attrs) do
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notification
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|> cast(attrs, [:seen, :type])
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|> validate_inclusion(:type, @notification_types)
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end
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@spec last_read_query(User.t()) :: Ecto.Queryable.t()
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def last_read_query(user) do
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from(q in Pleroma.Notification,
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where: q.user_id == ^user.id,
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where: q.seen == true,
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select: type(q.id, :string),
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limit: 1,
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order_by: [desc: :id]
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)
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end
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defp for_user_query_ap_id_opts(user, opts) do
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ap_id_relationships =
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[:block] ++
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if opts[@include_muted_option], do: [], else: [:notification_mute]
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preloaded_ap_ids = User.outgoing_relationships_ap_ids(user, ap_id_relationships)
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exclude_blocked_opts = Map.merge(%{blocked_users_ap_ids: preloaded_ap_ids[:block]}, opts)
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exclude_notification_muted_opts =
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Map.merge(%{notification_muted_users_ap_ids: preloaded_ap_ids[:notification_mute]}, opts)
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{exclude_blocked_opts, exclude_notification_muted_opts}
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end
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def for_user_query(user, opts \\ %{}) do
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{exclude_blocked_opts, exclude_notification_muted_opts} =
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for_user_query_ap_id_opts(user, opts)
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Notification
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|> where(user_id: ^user.id)
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|> join(:inner, [n], activity in assoc(n, :activity))
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|> join(:left, [n, a], object in Object,
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on:
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fragment(
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"(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
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object.data,
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a.data,
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a.data
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)
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)
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|> join(:inner, [_n, a], u in User, on: u.ap_id == a.actor, as: :user_actor)
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|> preload([n, a, o], activity: {a, object: o})
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|> where([user_actor: user_actor], user_actor.is_active)
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|> exclude_notification_muted(user, exclude_notification_muted_opts)
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|> exclude_blocked(user, exclude_blocked_opts)
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|> exclude_filtered(user)
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|> exclude_visibility(opts)
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end
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# Excludes blocked users and non-followed domain-blocked users
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defp exclude_blocked(query, user, opts) do
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blocked_ap_ids = opts[:blocked_users_ap_ids] || User.blocked_users_ap_ids(user)
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query
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|> where([n, a], a.actor not in ^blocked_ap_ids)
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|> FollowingRelationship.keep_following_or_not_domain_blocked(user)
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end
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defp exclude_notification_muted(query, _, %{@include_muted_option => true}) do
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query
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end
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defp exclude_notification_muted(query, user, opts) do
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notification_muted_ap_ids =
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opts[:notification_muted_users_ap_ids] || User.notification_muted_users_ap_ids(user)
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query
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|> where([n, a], a.actor not in ^notification_muted_ap_ids)
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|> join(:left, [n, a], tm in ThreadMute,
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on: tm.user_id == ^user.id and tm.context == fragment("?->>'context'", a.data),
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as: :thread_mute
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)
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|> where([thread_mute: thread_mute], is_nil(thread_mute.user_id))
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end
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defp exclude_filtered(query, user) do
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case Pleroma.Filter.compose_regex(user) do
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nil ->
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query
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regex ->
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from([_n, a, o] in query,
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where:
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fragment("not(?->>'content' ~* ?)", o.data, ^regex) or
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fragment("?->>'actor' = ?", o.data, ^user.ap_id)
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)
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end
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end
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@valid_visibilities ~w[direct unlisted public private]
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defp exclude_visibility(query, %{exclude_visibilities: visibility})
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when is_list(visibility) do
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if Enum.all?(visibility, &(&1 in @valid_visibilities)) do
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query
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|> join(:left, [n, a], mutated_activity in Pleroma.Activity,
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on:
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fragment(
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"COALESCE((?->'object')->>'id', ?->>'object')",
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a.data,
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a.data
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) ==
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fragment(
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"COALESCE((?->'object')->>'id', ?->>'object')",
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mutated_activity.data,
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mutated_activity.data
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) and
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fragment("(?->>'type' = 'Like' or ?->>'type' = 'Announce')", a.data, a.data) and
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fragment("?->>'type'", mutated_activity.data) == "Create",
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as: :mutated_activity
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)
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|> where(
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[n, a, mutated_activity: mutated_activity],
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not fragment(
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"""
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CASE WHEN (?->>'type') = 'Like' or (?->>'type') = 'Announce'
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THEN (activity_visibility(?, ?, ?) = ANY (?))
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ELSE (activity_visibility(?, ?, ?) = ANY (?)) END
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""",
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a.data,
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a.data,
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mutated_activity.actor,
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mutated_activity.recipients,
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mutated_activity.data,
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^visibility,
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a.actor,
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a.recipients,
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a.data,
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^visibility
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)
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)
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else
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Logger.error("Could not exclude visibility to #{visibility}")
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query
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end
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end
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defp exclude_visibility(query, %{exclude_visibilities: visibility})
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when visibility in @valid_visibilities do
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exclude_visibility(query, [visibility])
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end
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defp exclude_visibility(query, %{exclude_visibilities: visibility})
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when visibility not in @valid_visibilities do
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Logger.error("Could not exclude visibility to #{visibility}")
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query
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end
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defp exclude_visibility(query, _visibility), do: query
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def for_user(user, opts \\ %{}) do
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user
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|> for_user_query(opts)
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|> Pagination.fetch_paginated(opts)
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end
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@doc """
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Returns notifications for user received since given date.
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## Examples
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iex> Pleroma.Notification.for_user_since(%Pleroma.User{}, ~N[2019-04-13 11:22:33])
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[%Pleroma.Notification{}, %Pleroma.Notification{}]
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iex> Pleroma.Notification.for_user_since(%Pleroma.User{}, ~N[2019-04-15 11:22:33])
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[]
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"""
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@spec for_user_since(Pleroma.User.t(), NaiveDateTime.t()) :: [t()]
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def for_user_since(user, date) do
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from(n in for_user_query(user),
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where: n.updated_at > ^date
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)
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|> Repo.all()
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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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where: n.seen == false,
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# Ideally we would preload object and activities here
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# but Ecto does not support preloads in update_all
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select: n.id
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)
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{:ok, %{ids: {_, notification_ids}}} =
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Multi.new()
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|> Multi.update_all(:ids, query, set: [seen: true, updated_at: NaiveDateTime.utc_now()])
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|> Marker.multi_set_last_read_id(user, "notifications")
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|> Repo.transaction()
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for_user_query(user)
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|> where([n], n.id in ^notification_ids)
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|> Repo.all()
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end
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@spec read_one(User.t(), String.t()) ::
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{:ok, Notification.t()} | {:error, Ecto.Changeset.t()} | nil
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def read_one(%User{} = user, notification_id) do
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with {:ok, %Notification{} = notification} <- get(user, notification_id) do
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Multi.new()
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|> Multi.update(:update, changeset(notification, %{seen: true}))
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|> Marker.multi_set_last_read_id(user, "notifications")
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|> Repo.transaction()
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|> case do
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{:ok, %{update: notification}} -> {:ok, notification}
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{:error, :update, changeset, _} -> {:error, changeset}
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end
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end
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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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join: activity in assoc(n, :activity),
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preload: [activity: 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 destroy_multiple(%{id: user_id} = _user, ids) do
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from(n in Notification,
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where: n.id in ^ids,
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where: n.user_id == ^user_id
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)
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|> Repo.delete_all()
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end
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def dismiss(%Pleroma.Activity{} = activity) do
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Notification
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|> where([n], n.activity_id == ^activity.id)
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|> Repo.delete_all()
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|> case do
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{_, notifications} -> {:ok, notifications}
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_ -> {:error, "Cannot dismiss notification"}
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end
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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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@spec create_notifications(Activity.t(), keyword()) :: {:ok, [Notification.t()] | []}
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def create_notifications(activity, options \\ [])
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def create_notifications(%Activity{data: %{"to" => _, "type" => "Create"}} = activity, options) do
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object = Object.normalize(activity, fetch: false)
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if object && object.data["type"] == "Answer" do
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{:ok, []}
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else
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do_create_notifications(activity, options)
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end
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end
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def create_notifications(%Activity{data: %{"type" => type}} = activity, options)
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when type in ["Follow", "Like", "Announce", "Move", "EmojiReact", "Flag"] do
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do_create_notifications(activity, options)
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end
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def create_notifications(_, _), do: {:ok, []}
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defp do_create_notifications(%Activity{} = activity, options) do
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do_send = Keyword.get(options, :do_send, true)
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{enabled_receivers, disabled_receivers} = get_notified_from_activity(activity)
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potential_receivers = enabled_receivers ++ disabled_receivers
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notifications =
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Enum.map(potential_receivers, fn user ->
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do_send = do_send && user in enabled_receivers
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create_notification(activity, user, do_send)
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end)
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|> Enum.reject(&is_nil/1)
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{:ok, notifications}
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end
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defp type_from_activity(%{data: %{"type" => type}} = activity) do
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case type do
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"Follow" ->
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if Activity.follow_accepted?(activity) do
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"follow"
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else
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"follow_request"
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end
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"Announce" ->
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"reblog"
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"Like" ->
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"favourite"
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"Move" ->
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"move"
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"EmojiReact" ->
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"pleroma:emoji_reaction"
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"Flag" ->
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"pleroma:report"
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# Compatibility with old reactions
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"EmojiReaction" ->
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"pleroma:emoji_reaction"
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"Create" ->
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activity
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|> type_from_activity_object()
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t ->
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raise "No notification type for activity type #{t}"
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end
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end
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defp type_from_activity_object(%{data: %{"type" => "Create", "object" => %{}}}), do: "mention"
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defp type_from_activity_object(%{data: %{"type" => "Create"}} = activity) do
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object = Object.get_by_ap_id(activity.data["object"])
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case object && object.data["type"] do
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"ChatMessage" -> "pleroma:chat_mention"
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_ -> "mention"
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end
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end
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# TODO move to sql, too.
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def create_notification(%Activity{} = activity, %User{} = user, do_send \\ true) do
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unless skip?(activity, user) do
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{:ok, %{notification: notification}} =
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Multi.new()
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|> Multi.insert(:notification, %Notification{
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user_id: user.id,
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activity: activity,
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seen: mark_as_read?(activity, user),
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type: type_from_activity(activity)
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})
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|> Marker.multi_set_last_read_id(user, "notifications")
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|> Repo.transaction()
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if do_send do
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Streamer.stream(["user", "user:notification"], notification)
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Push.send(notification)
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end
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notification
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end
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end
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@doc """
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Returns a tuple with 2 elements:
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{notification-enabled receivers, currently disabled receivers (blocking / [thread] muting)}
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NOTE: might be called for FAKE Activities, see ActivityPub.Utils.get_notified_from_object/1
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"""
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@spec get_notified_from_activity(Activity.t(), boolean()) :: {list(User.t()), list(User.t())}
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def get_notified_from_activity(activity, local_only \\ true)
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def get_notified_from_activity(%Activity{data: %{"type" => type}} = activity, local_only)
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when type in ["Create", "Like", "Announce", "Follow", "Move", "EmojiReact", "Flag"] do
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potential_receiver_ap_ids = get_potential_receiver_ap_ids(activity)
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potential_receivers =
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User.get_users_from_set(potential_receiver_ap_ids, local_only: local_only)
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notification_enabled_ap_ids =
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potential_receiver_ap_ids
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|> exclude_domain_blocker_ap_ids(activity, potential_receivers)
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|> exclude_relationship_restricted_ap_ids(activity)
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|> exclude_thread_muter_ap_ids(activity)
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notification_enabled_users =
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Enum.filter(potential_receivers, fn u -> u.ap_id in notification_enabled_ap_ids end)
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{notification_enabled_users, potential_receivers -- notification_enabled_users}
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end
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def get_notified_from_activity(_, _local_only), do: {[], []}
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# For some activities, only notify the author of the object
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def get_potential_receiver_ap_ids(%{data: %{"type" => type, "object" => object_id}})
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when type in ~w{Like Announce EmojiReact} do
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case Object.get_cached_by_ap_id(object_id) do
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%Object{data: %{"actor" => actor}} ->
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[actor]
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_ ->
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[]
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end
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end
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def get_potential_receiver_ap_ids(%{data: %{"type" => "Follow", "object" => object_id}}) do
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[object_id]
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end
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def get_potential_receiver_ap_ids(%{data: %{"type" => "Flag", "actor" => actor}}) do
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(User.all_superusers() |> Enum.map(fn user -> user.ap_id end)) -- [actor]
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end
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def get_potential_receiver_ap_ids(activity) do
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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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|> Utils.maybe_notify_subscribers(activity)
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|> Utils.maybe_notify_followers(activity)
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|> Enum.uniq()
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end
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@doc "Filters out AP IDs domain-blocking and not following the activity's actor"
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def exclude_domain_blocker_ap_ids(ap_ids, activity, preloaded_users \\ [])
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def exclude_domain_blocker_ap_ids([], _activity, _preloaded_users), do: []
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def exclude_domain_blocker_ap_ids(ap_ids, %Activity{} = activity, preloaded_users) do
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activity_actor_domain = activity.actor && URI.parse(activity.actor).host
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users =
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ap_ids
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|> Enum.map(fn ap_id ->
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Enum.find(preloaded_users, &(&1.ap_id == ap_id)) ||
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User.get_cached_by_ap_id(ap_id)
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end)
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|> Enum.filter(& &1)
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domain_blocker_ap_ids = for u <- users, activity_actor_domain in u.domain_blocks, do: u.ap_id
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domain_blocker_follower_ap_ids =
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if Enum.any?(domain_blocker_ap_ids) do
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activity
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|> Activity.user_actor()
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|> FollowingRelationship.followers_ap_ids(domain_blocker_ap_ids)
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else
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[]
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end
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ap_ids
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|> Kernel.--(domain_blocker_ap_ids)
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|> Kernel.++(domain_blocker_follower_ap_ids)
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end
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@doc "Filters out AP IDs of users basing on their relationships with activity actor user"
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def exclude_relationship_restricted_ap_ids([], _activity), do: []
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def exclude_relationship_restricted_ap_ids(ap_ids, %Activity{} = activity) do
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relationship_restricted_ap_ids =
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activity
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|> Activity.user_actor()
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|> User.incoming_relationships_ungrouped_ap_ids([
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:block,
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:notification_mute
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])
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Enum.uniq(ap_ids) -- relationship_restricted_ap_ids
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end
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@doc "Filters out AP IDs of users who mute activity thread"
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def exclude_thread_muter_ap_ids([], _activity), do: []
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def exclude_thread_muter_ap_ids(ap_ids, %Activity{} = activity) do
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thread_muter_ap_ids = ThreadMute.muter_ap_ids(activity.data["context"])
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Enum.uniq(ap_ids) -- thread_muter_ap_ids
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end
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@spec skip?(Activity.t(), User.t()) :: boolean()
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def skip?(%Activity{} = activity, %User{} = user) do
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[
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:self,
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:invisible,
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:block_from_strangers,
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:recently_followed,
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:filtered
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]
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|> Enum.find(&skip?(&1, activity, user))
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end
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def skip?(_, _), do: false
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@spec skip?(atom(), Activity.t(), User.t()) :: boolean()
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def skip?(:self, %Activity{} = activity, %User{} = user) do
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activity.data["actor"] == user.ap_id
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end
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def skip?(:invisible, %Activity{} = activity, _) do
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actor = activity.data["actor"]
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user = User.get_cached_by_ap_id(actor)
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User.invisible?(user)
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end
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def skip?(
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:block_from_strangers,
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%Activity{} = activity,
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%User{notification_settings: %{block_from_strangers: true}} = user
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) do
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actor = activity.data["actor"]
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follower = User.get_cached_by_ap_id(actor)
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!User.following?(follower, user)
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end
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# To do: consider defining recency in hours and checking FollowingRelationship with a single SQL
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def skip?(:recently_followed, %Activity{data: %{"type" => "Follow"}} = activity, %User{} = user) do
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actor = activity.data["actor"]
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|
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Notification.for_user(user)
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|> Enum.any?(fn
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%{activity: %{data: %{"type" => "Follow", "actor" => ^actor}}} -> true
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_ -> false
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end)
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end
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def skip?(:filtered, %{data: %{"type" => type}}, _) when type in ["Follow", "Move"], do: false
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|
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def skip?(:filtered, activity, user) do
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object = Object.normalize(activity, fetch: false)
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|
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cond do
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is_nil(object) ->
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false
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|
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object.data["actor"] == user.ap_id ->
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false
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|
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not is_nil(regex = Pleroma.Filter.compose_regex(user, :re)) ->
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Regex.match?(regex, object.data["content"])
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|
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true ->
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false
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end
|
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end
|
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|
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def skip?(_, _, _), do: false
|
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|
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def mark_as_read?(activity, target_user) do
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user = Activity.user_actor(activity)
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User.mutes_user?(target_user, user) || CommonAPI.thread_muted?(target_user, activity)
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end
|
|
|
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def for_user_and_activity(user, activity) do
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|
from(n in __MODULE__,
|
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where: n.user_id == ^user.id,
|
|
where: n.activity_id == ^activity.id
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|
)
|
|
|> Repo.one()
|
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end
|
|
|
|
@spec mark_context_as_read(User.t(), String.t()) :: {integer(), nil | [term()]}
|
|
def mark_context_as_read(%User{id: id}, context) do
|
|
from(
|
|
n in Notification,
|
|
join: a in assoc(n, :activity),
|
|
where: n.user_id == ^id,
|
|
where: n.seen == false,
|
|
where: fragment("?->>'context'", a.data) == ^context
|
|
)
|
|
|> Repo.update_all(set: [seen: true])
|
|
end
|
|
end
|