370 lines
10 KiB
Elixir
370 lines
10 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Activity do
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use Ecto.Schema
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alias Pleroma.Activity
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alias Pleroma.Activity.Queries
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alias Pleroma.Bookmark
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alias Pleroma.Notification
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alias Pleroma.Object
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alias Pleroma.Repo
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alias Pleroma.ReportNote
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alias Pleroma.ThreadMute
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alias Pleroma.User
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alias Pleroma.Web.ActivityPub.ActivityPub
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import Ecto.Changeset
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import Ecto.Query
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require Pleroma.Constants
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@type t :: %__MODULE__{}
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@type actor :: String.t()
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@primary_key {:id, FlakeId.Ecto.CompatType, autogenerate: true}
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schema "activities" do
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field(:data, :map)
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field(:local, :boolean, default: true)
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field(:actor, :string)
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field(:recipients, {:array, :string}, default: [])
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field(:thread_muted?, :boolean, virtual: true)
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# A field that can be used if you need to join some kind of other
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# id to order / paginate this field by
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field(:pagination_id, :string, virtual: true)
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# This is a fake relation,
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# do not use outside of with_preloaded_user_actor/with_joined_user_actor
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has_one(:user_actor, User, on_delete: :nothing, foreign_key: :id)
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# This is a fake relation, do not use outside of with_preloaded_bookmark/get_bookmark
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has_one(:bookmark, Bookmark)
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# This is a fake relation, do not use outside of with_preloaded_report_notes
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has_many(:report_notes, ReportNote)
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has_many(:notifications, Notification, on_delete: :delete_all)
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# Attention: this is a fake relation, don't try to preload it blindly and expect it to work!
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# The foreign key is embedded in a jsonb field.
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#
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# To use it, you probably want to do an inner join and a preload:
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#
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# ```
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# |> join(:inner, [activity], o in Object,
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# on: fragment("(?->>'id') = COALESCE((?)->'object'->> 'id', (?)->>'object')",
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# o.data, activity.data, activity.data))
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# |> preload([activity, object], [object: object])
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# ```
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#
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# As a convenience, Activity.with_preloaded_object() sets up an inner join and preload for the
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# typical case.
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has_one(:object, Object, on_delete: :nothing, foreign_key: :id)
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timestamps()
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end
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def with_joined_object(query, join_type \\ :inner) do
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join(query, join_type, [activity], o 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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o.data,
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activity.data,
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activity.data
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),
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as: :object
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)
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end
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def with_preloaded_object(query, join_type \\ :inner) do
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query
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|> has_named_binding?(:object)
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|> if(do: query, else: with_joined_object(query, join_type))
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|> preload([activity, object: object], object: object)
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end
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# Note: applies to fake activities (ActivityPub.Utils.get_notified_from_object/1 etc.)
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def user_actor(%Activity{actor: nil}), do: nil
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def user_actor(%Activity{} = activity) do
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with %User{} <- activity.user_actor do
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activity.user_actor
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else
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_ -> User.get_cached_by_ap_id(activity.actor)
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end
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end
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def with_joined_user_actor(query, join_type \\ :inner) do
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join(query, join_type, [activity], u in User,
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on: u.ap_id == activity.actor,
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as: :user_actor
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)
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end
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def with_preloaded_user_actor(query, join_type \\ :inner) do
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query
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|> with_joined_user_actor(join_type)
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|> preload([activity, user_actor: user_actor], user_actor: user_actor)
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end
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def with_preloaded_bookmark(query, %User{} = user) do
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from([a] in query,
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left_join: b in Bookmark,
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on: b.user_id == ^user.id and b.activity_id == a.id,
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preload: [bookmark: b]
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)
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end
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def with_preloaded_bookmark(query, _), do: query
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def with_preloaded_report_notes(query) do
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from([a] in query,
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left_join: r in ReportNote,
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on: a.id == r.activity_id,
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preload: [report_notes: r]
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)
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end
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def with_preloaded_report_notes(query, _), do: query
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def with_set_thread_muted_field(query, %User{} = user) do
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from([a] in query,
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left_join: 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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select: %Activity{a | thread_muted?: not is_nil(tm.id)}
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)
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end
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def with_set_thread_muted_field(query, _), do: query
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def get_by_ap_id(ap_id) do
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ap_id
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|> Queries.by_ap_id()
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|> Repo.one()
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end
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def get_bookmark(%Activity{} = activity, %User{} = user) do
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if Ecto.assoc_loaded?(activity.bookmark) do
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activity.bookmark
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else
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Bookmark.get(user.id, activity.id)
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end
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end
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def get_bookmark(_, _), do: nil
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def get_report(activity_id) do
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opts = %{
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type: "Flag",
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skip_preload: true,
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preload_report_notes: true
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}
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ActivityPub.fetch_activities_query([], opts)
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|> where(id: ^activity_id)
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|> Repo.one()
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end
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def change(struct, params \\ %{}) do
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struct
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|> cast(params, [:data, :recipients])
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|> validate_required([:data])
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|> unique_constraint(:ap_id, name: :activities_unique_apid_index)
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end
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def get_by_ap_id_with_object(ap_id) do
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ap_id
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|> Queries.by_ap_id()
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|> with_preloaded_object(:left)
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|> Repo.one()
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end
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@spec get_by_id(String.t()) :: Activity.t() | nil
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def get_by_id(id) do
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case FlakeId.flake_id?(id) do
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true ->
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Activity
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|> where([a], a.id == ^id)
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|> restrict_deactivated_users()
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|> Repo.one()
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_ ->
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nil
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end
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end
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def get_by_id_with_object(id) do
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Activity
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|> where(id: ^id)
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|> with_preloaded_object()
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|> Repo.one()
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end
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def all_by_ids_with_object(ids) do
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Activity
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|> where([a], a.id in ^ids)
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|> with_preloaded_object()
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|> Repo.all()
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end
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@doc """
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Accepts `ap_id` or list of `ap_id`.
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Returns a query.
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"""
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@spec create_by_object_ap_id(String.t() | [String.t()]) :: Ecto.Queryable.t()
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def create_by_object_ap_id(ap_id) do
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ap_id
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|> Queries.by_object_id()
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|> Queries.by_type("Create")
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end
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def get_all_create_by_object_ap_id(ap_id) do
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ap_id
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|> create_by_object_ap_id()
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|> Repo.all()
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end
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def get_create_by_object_ap_id(ap_id) when is_binary(ap_id) do
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create_by_object_ap_id(ap_id)
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|> restrict_deactivated_users()
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|> Repo.one()
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end
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def get_create_by_object_ap_id(_), do: nil
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@doc """
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Accepts `ap_id` or list of `ap_id`.
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Returns a query.
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"""
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@spec create_by_object_ap_id_with_object(String.t() | [String.t()]) :: Ecto.Queryable.t()
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def create_by_object_ap_id_with_object(ap_id) do
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ap_id
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|> create_by_object_ap_id()
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|> with_preloaded_object()
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end
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def get_create_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do
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ap_id
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|> create_by_object_ap_id_with_object()
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|> Repo.one()
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end
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def get_create_by_object_ap_id_with_object(_), do: nil
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defp get_in_reply_to_activity_from_object(%Object{data: %{"inReplyTo" => ap_id}}) do
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get_create_by_object_ap_id_with_object(ap_id)
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end
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defp get_in_reply_to_activity_from_object(_), do: nil
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def get_in_reply_to_activity(%Activity{} = activity) do
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get_in_reply_to_activity_from_object(Object.normalize(activity))
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end
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def normalize(obj) when is_map(obj), do: get_by_ap_id_with_object(obj["id"])
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def normalize(ap_id) when is_binary(ap_id), do: get_by_ap_id_with_object(ap_id)
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def normalize(_), do: nil
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def delete_all_by_object_ap_id(id) when is_binary(id) do
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id
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|> Queries.by_object_id()
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|> Queries.exclude_type("Delete")
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|> select([u], u)
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|> Repo.delete_all()
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|> elem(1)
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|> Enum.find(fn
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%{data: %{"type" => "Create", "object" => ap_id}} when is_binary(ap_id) -> ap_id == id
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%{data: %{"type" => "Create", "object" => %{"id" => ap_id}}} -> ap_id == id
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_ -> nil
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end)
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|> purge_web_resp_cache()
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end
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def delete_all_by_object_ap_id(_), do: nil
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defp purge_web_resp_cache(%Activity{} = activity) do
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%{path: path} = URI.parse(activity.data["id"])
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Cachex.del(:web_resp_cache, path)
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activity
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end
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defp purge_web_resp_cache(nil), do: nil
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def follow_accepted?(
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%Activity{data: %{"type" => "Follow", "object" => followed_ap_id}} = activity
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) do
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with %User{} = follower <- Activity.user_actor(activity),
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%User{} = followed <- User.get_cached_by_ap_id(followed_ap_id) do
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Pleroma.FollowingRelationship.following?(follower, followed)
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else
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_ -> false
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end
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end
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def follow_accepted?(_), do: false
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def all_by_actor_and_id(actor, status_ids \\ [])
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def all_by_actor_and_id(_actor, []), do: []
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def all_by_actor_and_id(actor, status_ids) do
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Activity
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|> where([s], s.id in ^status_ids)
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|> where([s], s.actor == ^actor)
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|> Repo.all()
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end
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def follow_requests_for_actor(%User{ap_id: ap_id}) do
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ap_id
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|> Queries.by_object_id()
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|> Queries.by_type("Follow")
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|> where([a], fragment("? ->> 'state' = 'pending'", a.data))
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end
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def following_requests_for_actor(%User{ap_id: ap_id}) do
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Queries.by_type("Follow")
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|> where([a], fragment("?->>'state' = 'pending'", a.data))
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|> where([a], a.actor == ^ap_id)
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|> Repo.all()
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end
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def restrict_deactivated_users(query) do
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deactivated_users =
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from(u in User.Query.build(%{deactivated: true}), select: u.ap_id)
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|> Repo.all()
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Activity.Queries.exclude_authors(query, deactivated_users)
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end
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defdelegate search(user, query, options \\ []), to: Pleroma.Activity.Search
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def direct_conversation_id(activity, for_user) do
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alias Pleroma.Conversation.Participation
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with %{data: %{"context" => context}} when is_binary(context) <- activity,
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%Pleroma.Conversation{} = conversation <- Pleroma.Conversation.get_for_ap_id(context),
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%Participation{id: participation_id} <-
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Participation.for_user_and_conversation(for_user, conversation) do
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participation_id
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else
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_ -> nil
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end
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end
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@spec pinned_by_actor?(Activity.t()) :: boolean()
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def pinned_by_actor?(%Activity{} = activity) do
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actor = user_actor(activity)
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activity.id in actor.pinned_activities
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end
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def local_only?(activity) do
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recipients = Enum.concat(activity.data["to"], Map.get(activity.data, "cc", []))
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public = Pleroma.Constants.as_public()
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local = Pleroma.Constants.as_local_public()
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Enum.member?(recipients, local) and not Enum.member?(recipients, public)
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end
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end
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