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activity.ex
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# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Activity do
use Ecto.Schema
alias Pleroma.Activity
alias Pleroma.Bookmark
alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.Repo
alias Pleroma.ThreadMute
alias Pleroma.User
import Ecto.Changeset
import Ecto.Query
@type t :: %__MODULE__{}
@type actor :: String.t()
@primary_key {:id, Pleroma.FlakeId, autogenerate: true}
# https://github.com/tootsuite/mastodon/blob/master/app/models/notification.rb#L19
@mastodon_notification_types %{
"Create" => "mention",
"Follow" => "follow",
"Announce" => "reblog",
"Like" => "favourite"
}
@mastodon_to_ap_notification_types for {k, v} <- @mastodon_notification_types,
into: %{},
do: {v, k}
schema "activities" do
field(:data, :map)
field(:local, :boolean, default: true)
field(:actor, :string)
field(:recipients, {:array, :string}, default: [])
field(:thread_muted?, :boolean, virtual: true)
# This is a fake relation, do not use outside of with_preloaded_bookmark/get_bookmark
has_one(:bookmark, Bookmark)
has_many(:notifications, Notification, on_delete: :delete_all)
# Attention: this is a fake relation, don't try to preload it blindly and expect it to work!
# The foreign key is embedded in a jsonb field.
#
# To use it, you probably want to do an inner join and a preload:
#
# ```
# |> join(:inner, [activity], o in Object,
# on: fragment("(?->>'id') = COALESCE((?)->'object'->> 'id', (?)->>'object')",
# o.data, activity.data, activity.data))
# |> preload([activity, object], [object: object])
# ```
#
# As a convenience, Activity.with_preloaded_object() sets up an inner join and preload for the
# typical case.
has_one(:object, Object, on_delete: :nothing, foreign_key: :id)
timestamps()
end
def with_joined_object(query) do
join(query, :inner, [activity], o in Object,
on:
fragment(
"(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
o.data,
activity.data,
activity.data
),
as: :object
)
end
def with_preloaded_object(query) do
query
|> has_named_binding?(:object)
|> if(do: query, else: with_joined_object(query))
|> preload([activity, object: object], object: object)
end
def with_preloaded_bookmark(query, %User{} = user) do
from([a] in query,
left_join: b in Bookmark,
on: b.user_id == ^user.id and b.activity_id == a.id,
preload: [bookmark: b]
)
end
def with_preloaded_bookmark(query, _), do: query
def with_set_thread_muted_field(query, %User{} = user) do
from([a] in query,
left_join: tm in ThreadMute,
on: tm.user_id == ^user.id and tm.context == fragment("?->>'context'", a.data),
select: %Activity{a | thread_muted?: not is_nil(tm.id)}
)
end
def with_set_thread_muted_field(query, _), do: query
def get_by_ap_id(ap_id) do
Repo.one(
from(
activity in Activity,
where: fragment("(?)->>'id' = ?", activity.data, ^to_string(ap_id))
)
)
end
def get_bookmark(%Activity{} = activity, %User{} = user) do
if Ecto.assoc_loaded?(activity.bookmark) do
activity.bookmark
else
Bookmark.get(user.id, activity.id)
end
end
def get_bookmark(_, _), do: nil
def change(struct, params \\ %{}) do
struct
|> cast(params, [:data, :recipients])
|> validate_required([:data])
|> unique_constraint(:ap_id, name: :activities_unique_apid_index)
end
def get_by_ap_id_with_object(ap_id) do
Repo.one(
from(
activity in Activity,
where: fragment("(?)->>'id' = ?", activity.data, ^to_string(ap_id)),
left_join: o in Object,
on:
fragment(
"(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
o.data,
activity.data,
activity.data
),
preload: [object: o]
)
)
end
def get_by_id(id) do
Activity
|> where([a], a.id == ^id)
|> restrict_deactivated_users()
|> Repo.one()
end
def get_by_id_with_object(id) do
from(activity in Activity,
where: activity.id == ^id,
inner_join: o in Object,
on:
fragment(
"(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
o.data,
activity.data,
activity.data
),
preload: [object: o]
)
|> Repo.one()
end
def by_object_ap_id(ap_id) do
from(
activity in Activity,
where:
fragment(
"coalesce((?)->'object'->>'id', (?)->>'object') = ?",
activity.data,
activity.data,
^to_string(ap_id)
)
)
end
def create_by_object_ap_id(ap_ids) when is_list(ap_ids) do
from(
activity in Activity,
where:
fragment(
"coalesce((?)->'object'->>'id', (?)->>'object') = ANY(?)",
activity.data,
activity.data,
^ap_ids
),
where: fragment("(?)->>'type' = 'Create'", activity.data)
)
end
def create_by_object_ap_id(ap_id) when is_binary(ap_id) do
from(
activity in Activity,
where:
fragment(
"coalesce((?)->'object'->>'id', (?)->>'object') = ?",
activity.data,
activity.data,
^to_string(ap_id)
),
where: fragment("(?)->>'type' = 'Create'", activity.data)
)
end
def create_by_object_ap_id(_), do: nil
def get_all_create_by_object_ap_id(ap_id) do
Repo.all(create_by_object_ap_id(ap_id))
end
def get_create_by_object_ap_id(ap_id) when is_binary(ap_id) do
create_by_object_ap_id(ap_id)
|> restrict_deactivated_users()
|> Repo.one()
end
def get_create_by_object_ap_id(_), do: nil
def create_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do
from(
activity in Activity,
where:
fragment(
"coalesce((?)->'object'->>'id', (?)->>'object') = ?",
activity.data,
activity.data,
^to_string(ap_id)
),
where: fragment("(?)->>'type' = 'Create'", activity.data),
inner_join: o in Object,
on:
fragment(
"(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
o.data,
activity.data,
activity.data
),
preload: [object: o]
)
end
def create_by_object_ap_id_with_object(_), do: nil
def get_create_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do
ap_id
|> create_by_object_ap_id_with_object()
|> Repo.one()
end
def get_create_by_object_ap_id_with_object(_), do: nil
defp get_in_reply_to_activity_from_object(%Object{data: %{"inReplyTo" => ap_id}}) do
get_create_by_object_ap_id_with_object(ap_id)
end
defp get_in_reply_to_activity_from_object(_), do: nil
def get_in_reply_to_activity(%Activity{data: %{"object" => object}}) do
get_in_reply_to_activity_from_object(Object.normalize(object))
end
def normalize(obj) when is_map(obj), do: get_by_ap_id_with_object(obj["id"])
def normalize(ap_id) when is_binary(ap_id), do: get_by_ap_id_with_object(ap_id)
def normalize(_), do: nil
def delete_by_ap_id(id) when is_binary(id) do
by_object_ap_id(id)
|> select([u], u)
|> Repo.delete_all()
|> elem(1)
|> Enum.find(fn
%{data: %{"type" => "Create", "object" => ap_id}} when is_binary(ap_id) -> ap_id == id
%{data: %{"type" => "Create", "object" => %{"id" => ap_id}}} -> ap_id == id
_ -> nil
end)
end
def delete_by_ap_id(_), do: nil
for {ap_type, type} <- @mastodon_notification_types do
def mastodon_notification_type(%Activity{data: %{"type" => unquote(ap_type)}}),
do: unquote(type)
end
def mastodon_notification_type(%Activity{}), do: nil
def from_mastodon_notification_type(type) do
Map.get(@mastodon_to_ap_notification_types, type)
end
def all_by_actor_and_id(actor, status_ids \\ [])
def all_by_actor_and_id(_actor, []), do: []
def all_by_actor_and_id(actor, status_ids) do
Activity
|> where([s], s.id in ^status_ids)
|> where([s], s.actor == ^actor)
|> Repo.all()
end
def follow_requests_for_actor(%Pleroma.User{ap_id: ap_id}) do
from(
a in Activity,
where:
fragment(
"? ->> 'type' = 'Follow'",
a.data
),
where:
fragment(
"? ->> 'state' = 'pending'",
a.data
),
where:
fragment(
"coalesce((?)->'object'->>'id', (?)->>'object') = ?",
a.data,
a.data,
^ap_id
)
)
end
@spec query_by_actor(actor()) :: Ecto.Query.t()
def query_by_actor(actor) do
from(a in Activity, where: a.actor == ^actor)
end
def restrict_deactivated_users(query) do
from(activity in query,
where:
fragment(
"? not in (SELECT ap_id FROM users WHERE info->'deactivated' @> 'true')",
activity.actor
)
)
end
end

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