2018-12-24 13:34:45 +01:00
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# Portions of this file are derived from Pleroma:
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# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social>
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# SPDX-License-Identifier: AGPL-3.0-only
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2018-10-11 17:37:39 +02:00
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defmodule Mobilizon.Service.ActivityPub.Utils do
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2018-06-14 18:15:27 +02:00
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@moduledoc """
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# Utils
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Various utils
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"""
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2018-10-11 17:37:39 +02:00
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alias Mobilizon.Repo
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alias Mobilizon.Actors
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alias Mobilizon.Actors.Actor
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alias Mobilizon.Events.Event
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2018-11-08 16:13:47 +01:00
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alias Mobilizon.Events.Comment
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2018-10-11 17:37:39 +02:00
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alias Mobilizon.Events
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alias Mobilizon.Activity
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2018-11-08 15:57:46 +01:00
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alias Mobilizon.Service.ActivityPub
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2018-12-14 17:41:55 +01:00
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alias Ecto.Changeset
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2018-11-08 17:41:47 +01:00
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require Logger
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2018-05-17 11:32:23 +02:00
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2018-12-14 17:41:55 +01:00
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# Some implementations send the actor URI as the actor field, others send the entire actor object,
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# so figure out what the actor's URI is based on what we have.
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def get_url(object) do
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case object do
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%{"id" => id} -> id
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id -> id
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end
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end
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2018-11-12 09:05:31 +01:00
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2018-05-17 11:32:23 +02:00
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def make_json_ld_header do
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%{
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"@context" => [
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"https://www.w3.org/ns/activitystreams",
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"https://litepub.github.io/litepub/context.jsonld",
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%{
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"sc" => "http://schema.org#",
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"Hashtag" => "as:Hashtag",
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"category" => "sc:category",
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"uuid" => "sc:identifier"
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2018-05-17 11:32:23 +02:00
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}
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]
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}
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end
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def make_date do
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DateTime.utc_now() |> DateTime.to_iso8601()
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end
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@doc """
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Enqueues an activity for federation if it's local
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"""
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def maybe_federate(%Activity{local: true} = activity) do
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2018-11-12 09:05:31 +01:00
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Logger.debug("Maybe federate an activity")
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2018-05-17 11:32:23 +02:00
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priority =
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case activity.data["type"] do
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"Delete" -> 10
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"Create" -> 1
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_ -> 5
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end
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2018-10-11 17:37:39 +02:00
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Mobilizon.Service.Federator.enqueue(:publish, activity, priority)
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:ok
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end
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def maybe_federate(_), do: :ok
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2018-11-12 09:05:31 +01:00
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def remote_actors(%{data: %{"to" => to} = data}) do
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to = to ++ (data["cc"] || [])
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to
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2018-11-12 18:17:53 +01:00
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|> Enum.map(fn url -> Actors.get_actor_by_url(url) end)
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|> Enum.map(fn {status, actor} ->
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case status do
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:ok ->
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actor
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_ ->
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nil
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end
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end)
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|> Enum.map(& &1)
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|> Enum.filter(fn actor -> actor && !is_nil(actor.domain) end)
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end
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2018-05-17 11:32:23 +02:00
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@doc """
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Adds an id and a published data if they aren't there,
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also adds it to an included object
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"""
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def lazy_put_activity_defaults(map) do
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if is_map(map["object"]) do
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object = lazy_put_object_defaults(map["object"])
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%{map | "object" => object}
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else
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map
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end
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end
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@doc """
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Adds an id and published date if they aren't there.
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"""
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2018-11-12 23:30:47 +01:00
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def lazy_put_object_defaults(map) do
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Map.put_new_lazy(map, "published", &make_date/0)
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end
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2018-12-14 17:41:55 +01:00
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@doc """
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Converts an AP object data to our internal data structure
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"""
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def object_to_event_data(object) do
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{:ok, %Actor{id: actor_id}} = Actors.get_actor_by_url(object["actor"])
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%{
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"title" => object["name"],
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"description" => object["content"],
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"organizer_actor_id" => actor_id,
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"begins_on" => object["begins_on"],
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"category_id" => Events.get_category_by_title(object["category"]).id,
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"url" => object["id"]
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}
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end
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2018-05-17 11:32:23 +02:00
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@doc """
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Inserts a full object if it is contained in an activity.
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"""
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2018-12-14 17:41:55 +01:00
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def insert_full_object(object_data)
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@doc """
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Inserts a full object if it is contained in an activity.
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"""
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def insert_full_object(%{"object" => %{"type" => "Event"} = object_data})
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when is_map(object_data) do
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with object_data <- object_to_event_data(object_data),
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{:ok, _} <- Events.create_event(object_data) do
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:ok
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end
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end
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def insert_full_object(%{"object" => %{"type" => "Group"} = object_data})
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when is_map(object_data) do
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with object_data <-
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Map.put(object_data, "preferred_username", object_data["preferredUsername"]),
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{:ok, _} <- Actors.create_group(object_data) do
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:ok
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end
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end
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@doc """
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Inserts a full object if it is contained in an activity.
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"""
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2018-12-14 17:41:55 +01:00
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def insert_full_object(%{"object" => %{"type" => "Note"} = object_data})
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when is_map(object_data) do
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Logger.debug("Inserting full comment")
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Logger.debug(inspect(object_data))
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2018-08-24 11:34:00 +02:00
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with {:ok, %Actor{id: actor_id}} <- Actors.get_or_fetch_by_url(object_data["actor"]) do
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data = %{
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"text" => object_data["content"],
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"url" => object_data["id"],
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"actor_id" => actor_id,
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"in_reply_to_comment_id" => nil,
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"event_id" => nil,
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"uuid" => object_data["uuid"]
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2018-08-24 11:34:00 +02:00
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}
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2018-11-08 15:57:46 +01:00
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# We fetch the parent object
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2018-12-14 17:41:55 +01:00
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Logger.debug("We're fetching the parent object")
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2018-11-08 17:40:26 +01:00
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data =
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if Map.has_key?(object_data, "inReplyTo") && object_data["inReplyTo"] != nil &&
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object_data["inReplyTo"] != "" do
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Logger.debug("Object has inReplyTo #{object_data["inReplyTo"]}")
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2018-11-08 17:17:35 +01:00
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case ActivityPub.fetch_object_from_url(object_data["inReplyTo"]) do
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# Reply to an event (Comment)
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{:ok, %Event{id: id}} ->
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2018-11-08 17:40:26 +01:00
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Logger.debug("Parent object is an event")
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data |> Map.put("event_id", id)
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# Reply to a comment (Comment)
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{:ok, %Comment{id: id} = comment} ->
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2018-11-08 17:40:26 +01:00
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Logger.debug("Parent object is another comment")
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2018-11-08 17:17:35 +01:00
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data
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|> Map.put("in_reply_to_comment_id", id)
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|> Map.put("origin_comment_id", comment |> Comment.get_thread_id())
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# Anthing else is kind of a MP
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{:error, object} ->
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2018-11-08 17:40:26 +01:00
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Logger.debug("Parent object is something we don't handle")
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2018-11-08 17:48:05 +01:00
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Logger.debug(inspect(object))
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2018-11-08 17:17:35 +01:00
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data
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end
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2018-11-08 17:40:26 +01:00
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else
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Logger.debug("No parent object for this comment")
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data
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end
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2018-11-08 15:57:46 +01:00
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2018-11-12 23:30:47 +01:00
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with {:ok, _comment} <- Events.create_comment(data) do
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2018-08-24 11:34:00 +02:00
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:ok
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2018-11-07 19:14:31 +01:00
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else
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err ->
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Logger.error("Error while inserting a remote comment inside database")
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2018-11-07 19:15:11 +01:00
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Logger.error(inspect(err))
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2018-11-07 19:14:31 +01:00
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{:error, err}
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2018-08-24 11:34:00 +02:00
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end
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2018-05-17 11:32:23 +02:00
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end
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end
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2018-12-14 17:41:55 +01:00
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def insert_full_object(_), do: :ok
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2018-05-17 11:32:23 +02:00
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#### Like-related helpers
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2018-07-27 10:45:35 +02:00
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# @doc """
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# Returns an existing like if a user already liked an object
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# """
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# def get_existing_like(actor, %{data: %{"id" => id}}) do
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# query =
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# from(
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# activity in Activity,
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# where: fragment("(?)->>'actor' = ?", activity.data, ^actor),
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# # this is to use the index
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# where:
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# fragment(
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# "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
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# activity.data,
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# activity.data,
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# ^id
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# ),
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# where: fragment("(?)->>'type' = 'Like'", activity.data)
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# )
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#
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# Repo.one(query)
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# end
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2018-05-17 11:32:23 +02:00
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2018-12-14 17:41:55 +01:00
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@doc """
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Make an AP event object from an set of values
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"""
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def make_event_data(
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actor,
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to,
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title,
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content_html,
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# attachments,
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tags \\ [],
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# _cw \\ nil,
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cc \\ [],
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metadata \\ %{},
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category \\ ""
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) do
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Logger.debug("Making event data")
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uuid = Ecto.UUID.generate()
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%{
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"type" => "Event",
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"to" => to,
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"cc" => cc,
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"content" => content_html,
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"name" => title,
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# "summary" => cw,
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# "attachment" => attachments,
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"begins_on" => metadata.begins_on,
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"category" => category,
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"actor" => actor,
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"id" => "#{MobilizonWeb.Endpoint.url()}/events/#{uuid}",
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"uuid" => uuid,
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"tag" => tags |> Enum.map(fn {_, tag} -> tag end) |> Enum.uniq()
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}
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end
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2018-11-12 18:17:53 +01:00
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def make_event_data(
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%Event{title: title, organizer_actor: actor, uuid: uuid},
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to \\ ["https://www.w3.org/ns/activitystreams#Public"]
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) do
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%{
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"type" => "Event",
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"to" => to,
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"title" => title,
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"actor" => actor.url,
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"uuid" => uuid,
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"id" => "#{MobilizonWeb.Endpoint.url()}/events/#{uuid}"
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}
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end
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@doc """
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Make an AP comment object from an existing `Comment` structure.
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"""
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def make_comment_data(
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%Comment{
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text: text,
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actor: actor,
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uuid: uuid,
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in_reply_to_comment: reply_to,
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event: event
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},
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to \\ ["https://www.w3.org/ns/activitystreams#Public"]
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) do
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object = %{
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"type" => "Note",
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"to" => to,
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"content" => text,
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"actor" => actor.url,
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2018-12-14 17:41:55 +01:00
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"attributedTo" => actor.url,
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2018-11-12 18:17:53 +01:00
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"uuid" => uuid,
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"id" => "#{MobilizonWeb.Endpoint.url()}/comments/#{uuid}"
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}
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if reply_to do
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object |> Map.put("inReplyTo", reply_to.url || event.url)
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else
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object
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end
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end
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2018-12-14 17:41:55 +01:00
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@doc """
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Make an AP comment object from an set of values
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"""
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2018-11-07 19:14:59 +01:00
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def make_comment_data(
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actor,
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to,
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content_html,
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2018-11-12 09:05:31 +01:00
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# attachments,
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inReplyTo \\ nil,
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2018-12-14 17:41:55 +01:00
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tags \\ [],
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# _cw \\ nil,
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2018-11-07 19:14:59 +01:00
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cc \\ []
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) do
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2018-11-12 09:05:31 +01:00
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Logger.debug("Making comment data")
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uuid = Ecto.UUID.generate()
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2018-11-07 19:14:59 +01:00
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object = %{
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"type" => "Note",
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"to" => to,
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2018-11-12 23:30:47 +01:00
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"cc" => cc,
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2018-11-07 19:14:59 +01:00
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"content" => content_html,
|
2018-11-12 09:05:31 +01:00
|
|
|
# "summary" => cw,
|
|
|
|
# "attachment" => attachments,
|
2018-11-07 19:14:59 +01:00
|
|
|
"actor" => actor,
|
2018-11-12 09:06:44 +01:00
|
|
|
"id" => "#{MobilizonWeb.Endpoint.url()}/comments/#{uuid}",
|
2018-12-14 17:41:55 +01:00
|
|
|
"uuid" => uuid,
|
|
|
|
"tag" => tags |> Enum.map(fn {_, tag} -> tag end) |> Enum.uniq()
|
2018-11-07 19:14:59 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if inReplyTo do
|
|
|
|
object
|
2018-11-12 09:05:31 +01:00
|
|
|
|> Map.put("inReplyTo", inReplyTo)
|
2018-11-07 19:14:59 +01:00
|
|
|
else
|
|
|
|
object
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2018-12-14 17:41:55 +01:00
|
|
|
def make_group_data(
|
|
|
|
actor,
|
|
|
|
to,
|
|
|
|
preferred_username,
|
|
|
|
content_html,
|
|
|
|
# attachments,
|
|
|
|
tags \\ [],
|
|
|
|
# _cw \\ nil,
|
|
|
|
cc \\ []
|
|
|
|
) do
|
|
|
|
uuid = Ecto.UUID.generate()
|
2018-05-17 11:32:23 +02:00
|
|
|
|
2018-12-14 17:41:55 +01:00
|
|
|
%{
|
|
|
|
"type" => "Group",
|
|
|
|
"to" => to,
|
|
|
|
"cc" => cc,
|
|
|
|
"summary" => content_html,
|
|
|
|
"attributedTo" => actor,
|
|
|
|
"preferredUsername" => preferred_username,
|
|
|
|
"id" => "#{MobilizonWeb.Endpoint.url()}/~#{preferred_username}",
|
|
|
|
"uuid" => uuid,
|
|
|
|
"tag" => tags |> Enum.map(fn {_, tag} -> tag end) |> Enum.uniq()
|
|
|
|
}
|
2018-05-17 11:32:23 +02:00
|
|
|
end
|
|
|
|
|
2018-12-14 17:41:55 +01:00
|
|
|
#### Like-related helpers
|
|
|
|
|
|
|
|
@doc """
|
|
|
|
Returns an existing like if a user already liked an object
|
|
|
|
"""
|
|
|
|
# @spec get_existing_like(Actor.t, map()) :: nil
|
|
|
|
# def get_existing_like(%Actor{url: url} = actor, %{data: %{"id" => id}}) do
|
|
|
|
# nil
|
|
|
|
# end
|
|
|
|
|
|
|
|
# def make_like_data(%Actor{url: url} = actor, %{data: %{"id" => id}} = object, activity_id) do
|
|
|
|
# data = %{
|
|
|
|
# "type" => "Like",
|
|
|
|
# "actor" => url,
|
|
|
|
# "object" => id,
|
|
|
|
# "to" => [actor.followers_url, object.data["actor"]],
|
|
|
|
# "cc" => ["https://www.w3.org/ns/activitystreams#Public"],
|
|
|
|
# "context" => object.data["context"]
|
|
|
|
# }
|
|
|
|
|
|
|
|
# if activity_id, do: Map.put(data, "id", activity_id), else: data
|
|
|
|
# end
|
|
|
|
|
2018-05-17 11:32:23 +02:00
|
|
|
def update_element_in_object(property, element, object) do
|
|
|
|
with new_data <-
|
|
|
|
object.data
|
|
|
|
|> Map.put("#{property}_count", length(element))
|
|
|
|
|> Map.put("#{property}s", element),
|
|
|
|
changeset <- Changeset.change(object, data: new_data),
|
|
|
|
{:ok, object} <- Repo.update(changeset) do
|
|
|
|
{:ok, object}
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2018-07-27 10:45:35 +02:00
|
|
|
# def update_likes_in_object(likes, object) do
|
|
|
|
# update_element_in_object("like", likes, object)
|
|
|
|
# end
|
|
|
|
#
|
|
|
|
# def add_like_to_object(%Activity{data: %{"actor" => actor}}, object) do
|
|
|
|
# with likes <- [actor | object.data["likes"] || []] |> Enum.uniq() do
|
|
|
|
# update_likes_in_object(likes, object)
|
|
|
|
# end
|
|
|
|
# end
|
|
|
|
#
|
|
|
|
# def remove_like_from_object(%Activity{data: %{"actor" => actor}}, object) do
|
|
|
|
# with likes <- (object.data["likes"] || []) |> List.delete(actor) do
|
|
|
|
# update_likes_in_object(likes, object)
|
|
|
|
# end
|
|
|
|
# end
|
2018-05-17 11:32:23 +02:00
|
|
|
|
|
|
|
#### Follow-related helpers
|
|
|
|
|
|
|
|
@doc """
|
2018-12-14 17:41:55 +01:00
|
|
|
Makes a follow activity data for the given followed and follower
|
2018-05-17 11:32:23 +02:00
|
|
|
"""
|
2018-12-14 17:41:55 +01:00
|
|
|
def make_follow_data(%Actor{url: followed_id}, %Actor{url: follower_id}, activity_id) do
|
2018-11-12 09:05:31 +01:00
|
|
|
Logger.debug("Make follow data")
|
|
|
|
|
2018-05-17 11:32:23 +02:00
|
|
|
data = %{
|
|
|
|
"type" => "Follow",
|
|
|
|
"actor" => follower_id,
|
|
|
|
"to" => [followed_id],
|
|
|
|
"cc" => ["https://www.w3.org/ns/activitystreams#Public"],
|
|
|
|
"object" => followed_id
|
|
|
|
}
|
|
|
|
|
2018-11-12 09:05:31 +01:00
|
|
|
Logger.debug(inspect(data))
|
|
|
|
|
|
|
|
if activity_id,
|
2018-12-14 17:41:55 +01:00
|
|
|
do: Map.put(data, "id", activity_id),
|
2018-11-12 09:05:31 +01:00
|
|
|
else: data
|
2018-05-17 11:32:23 +02:00
|
|
|
end
|
|
|
|
|
|
|
|
#### Announce-related helpers
|
|
|
|
|
|
|
|
@doc """
|
|
|
|
Make announce activity data for the given actor and object
|
|
|
|
"""
|
|
|
|
def make_announce_data(
|
2018-12-14 17:41:55 +01:00
|
|
|
%Actor{url: actor_url} = actor,
|
|
|
|
%Event{url: event_url} = object,
|
2018-05-17 11:32:23 +02:00
|
|
|
activity_id
|
|
|
|
) do
|
|
|
|
data = %{
|
|
|
|
"type" => "Announce",
|
2018-12-14 17:41:55 +01:00
|
|
|
"actor" => actor_url,
|
|
|
|
"object" => event_url,
|
|
|
|
"to" => [actor.followers_url, object.actor.url],
|
|
|
|
"cc" => ["https://www.w3.org/ns/activitystreams#Public"]
|
|
|
|
# "context" => object.data["context"]
|
|
|
|
}
|
|
|
|
|
|
|
|
if activity_id, do: Map.put(data, "id", activity_id), else: data
|
|
|
|
end
|
|
|
|
|
|
|
|
@doc """
|
|
|
|
Make announce activity data for the given actor and object
|
|
|
|
"""
|
|
|
|
def make_announce_data(
|
|
|
|
%Actor{url: actor_url} = actor,
|
|
|
|
%Comment{url: comment_url} = object,
|
|
|
|
activity_id
|
|
|
|
) do
|
|
|
|
data = %{
|
|
|
|
"type" => "Announce",
|
|
|
|
"actor" => actor_url,
|
|
|
|
"object" => comment_url,
|
|
|
|
"to" => [actor.followers_url, object.actor.url],
|
|
|
|
"cc" => ["https://www.w3.org/ns/activitystreams#Public"]
|
|
|
|
# "context" => object.data["context"]
|
2018-05-17 11:32:23 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
if activity_id, do: Map.put(data, "id", activity_id), else: data
|
|
|
|
end
|
|
|
|
|
|
|
|
def add_announce_to_object(%Activity{data: %{"actor" => actor}}, object) do
|
|
|
|
with announcements <- [actor | object.data["announcements"] || []] |> Enum.uniq() do
|
|
|
|
update_element_in_object("announcement", announcements, object)
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
#### Unfollow-related helpers
|
|
|
|
|
2018-12-14 17:41:55 +01:00
|
|
|
@spec make_unfollow_data(Actor.t(), Actor.t(), map(), String.t()) :: map()
|
|
|
|
def make_unfollow_data(
|
|
|
|
%Actor{url: follower_url},
|
|
|
|
%Actor{url: followed_url},
|
|
|
|
follow_activity,
|
|
|
|
activity_id
|
|
|
|
) do
|
|
|
|
data = %{
|
2018-05-17 11:32:23 +02:00
|
|
|
"type" => "Undo",
|
2018-12-14 17:41:55 +01:00
|
|
|
"actor" => follower_url,
|
|
|
|
"to" => [followed_url],
|
|
|
|
"object" => follow_activity.data
|
2018-05-17 11:32:23 +02:00
|
|
|
}
|
2018-12-14 17:41:55 +01:00
|
|
|
|
|
|
|
if activity_id, do: Map.put(data, "id", activity_id), else: data
|
2018-05-17 11:32:23 +02:00
|
|
|
end
|
|
|
|
|
|
|
|
#### Create-related helpers
|
|
|
|
|
2018-12-14 17:41:55 +01:00
|
|
|
@doc """
|
|
|
|
Make create activity data
|
|
|
|
"""
|
|
|
|
@spec make_create_data(map(), map()) :: map()
|
2018-11-12 18:17:53 +01:00
|
|
|
def make_create_data(params, additional \\ %{}) do
|
2018-12-14 17:41:55 +01:00
|
|
|
Logger.debug("Making create data")
|
|
|
|
Logger.debug(inspect(params))
|
2018-05-17 11:32:23 +02:00
|
|
|
published = params.published || make_date()
|
|
|
|
|
|
|
|
%{
|
|
|
|
"type" => "Create",
|
|
|
|
"to" => params.to |> Enum.uniq(),
|
|
|
|
"actor" => params.actor.url,
|
|
|
|
"object" => params.object,
|
2018-11-12 09:05:31 +01:00
|
|
|
"published" => published
|
2018-05-17 11:32:23 +02:00
|
|
|
}
|
|
|
|
|> Map.merge(additional)
|
|
|
|
end
|
2018-06-14 17:25:55 +02:00
|
|
|
|
|
|
|
@doc """
|
|
|
|
Converts PEM encoded keys to a public key representation
|
|
|
|
"""
|
|
|
|
def pem_to_public_key(pem) do
|
2018-08-03 10:16:22 +02:00
|
|
|
[key_code] = :public_key.pem_decode(pem)
|
|
|
|
key = :public_key.pem_entry_decode(key_code)
|
2018-08-03 10:19:28 +02:00
|
|
|
|
2018-08-03 10:16:22 +02:00
|
|
|
case key do
|
|
|
|
{:RSAPrivateKey, _, modulus, exponent, _, _, _, _, _, _, _} ->
|
|
|
|
{:RSAPublicKey, modulus, exponent}
|
2018-08-03 10:19:28 +02:00
|
|
|
|
|
|
|
{:RSAPublicKey, modulus, exponent} ->
|
|
|
|
{:RSAPublicKey, modulus, exponent}
|
2018-08-03 10:16:22 +02:00
|
|
|
end
|
2018-06-14 17:25:55 +02:00
|
|
|
end
|
|
|
|
|
|
|
|
@doc """
|
|
|
|
Converts PEM encoded keys to a private key representation
|
|
|
|
"""
|
|
|
|
def pem_to_private_key(pem) do
|
|
|
|
[private_key_code] = :public_key.pem_decode(pem)
|
|
|
|
:public_key.pem_entry_decode(private_key_code)
|
|
|
|
end
|
|
|
|
|
|
|
|
@doc """
|
|
|
|
Converts PEM encoded keys to a PEM public key representation
|
|
|
|
"""
|
|
|
|
def pem_to_public_key_pem(pem) do
|
|
|
|
public_key = pem_to_public_key(pem)
|
|
|
|
public_key = :public_key.pem_entry_encode(:RSAPublicKey, public_key)
|
|
|
|
:public_key.pem_encode([public_key])
|
|
|
|
end
|
2018-05-17 11:32:23 +02:00
|
|
|
end
|