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https://framagit.org/framasoft/mobilizon.git
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65b49e247f
Closes #148 Signed-off-by: Thomas Citharel <tcit@tcit.fr>
732 lines
19 KiB
Elixir
732 lines
19 KiB
Elixir
# 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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# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/web/activity_pub/utils.ex
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defmodule Mobilizon.Service.ActivityPub.Utils do
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@moduledoc """
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# Various ActivityPub related utils.
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"""
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alias Ecto.Changeset
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alias Mobilizon.{Actors, Addresses, Events, Reports, Users}
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alias Mobilizon.Actors.Actor
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alias Mobilizon.Addresses.Address
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alias Mobilizon.Events.{Comment, Event}
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alias Mobilizon.Media.Picture
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alias Mobilizon.Reports.Report
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alias Mobilizon.Service.ActivityPub.{Activity, Converter}
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alias Mobilizon.Service.Federator
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alias Mobilizon.Storage.Repo
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alias MobilizonWeb.{Email, Endpoint}
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alias MobilizonWeb.Router.Helpers, as: Routes
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require Logger
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@actor_types ["Group", "Person", "Application"]
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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(%{"id" => id}), do: id
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def get_url(id) when is_bitstring(id), do: id
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def get_url(_), do: nil
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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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}
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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.truncate(:second) |> 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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Logger.debug("Maybe federate an activity")
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if Mobilizon.Config.get!([:instance, :federating]) do
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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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Federator.enqueue(:publish, activity, priority)
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end
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:ok
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end
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def maybe_federate(_), do: :ok
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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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|> 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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@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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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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@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_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, "type" => "Create"})
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when is_map(object_data) do
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with {:ok, object_data} <-
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Converter.Event.as_to_model_data(object_data),
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{:ok, %Event{} = event} <- Events.create_event(object_data) do
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{:ok, event}
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end
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end
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def insert_full_object(%{"object" => %{"type" => "Group"} = object_data, "type" => "Create"})
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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, %Actor{} = group} <- Actors.create_group(object_data) do
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{:ok, group}
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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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def insert_full_object(%{"object" => %{"type" => "Note"} = object_data, "type" => "Create"})
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when is_map(object_data) do
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with data <- Converter.Comment.as_to_model_data(object_data),
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{:ok, %Comment{} = comment} <- Events.create_comment(data) do
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{:ok, comment}
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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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Logger.debug(inspect(err))
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{:error, err}
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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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def insert_full_object(%{"type" => "Flag"} = object_data)
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when is_map(object_data) do
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with data <- Converter.Flag.as_to_model_data(object_data),
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{:ok, %Report{} = report} <- Reports.create_report(data) do
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Enum.each(Users.list_moderators(), fn moderator ->
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moderator
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|> Email.Admin.report(report)
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|> Email.Mailer.deliver_later()
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end)
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{:ok, report}
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else
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err ->
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Logger.error("Error while inserting report inside database")
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Logger.debug(inspect(err))
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{:error, err}
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end
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end
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def insert_full_object(_), do: {:ok, nil}
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@doc """
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Update an object
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"""
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@spec update_object(struct(), map()) :: {:ok, struct()} | any()
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def update_object(object, object_data)
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def update_object(event_url, %{
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"object" => %{"type" => "Event"} = object_data,
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"type" => "Update"
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})
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when is_map(object_data) do
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with {:event_not_found, %Event{} = event} <-
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{:event_not_found, Events.get_event_by_url(event_url)},
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{:ok, object_data} <- Converter.Event.as_to_model_data(object_data),
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{:ok, %Event{} = event} <- Events.update_event(event, object_data) do
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{:ok, event}
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end
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end
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def update_object(actor_url, %{
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"object" => %{"type" => type_actor} = object_data,
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"type" => "Update"
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})
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when is_map(object_data) and type_actor in @actor_types do
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with {:ok, %Actor{} = actor} <- Actors.get_actor_by_url(actor_url),
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object_data <- Converter.Actor.as_to_model_data(object_data),
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{:ok, %Actor{} = actor} <- Actors.update_actor(actor, object_data) do
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{:ok, actor}
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end
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end
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def update_object(_, _), do: {:ok, nil}
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#### Like-related helpers
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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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@doc """
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Save picture data from %Plug.Upload{} and return AS Link data.
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"""
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def make_picture_data(%Plug.Upload{} = picture) do
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case MobilizonWeb.Upload.store(picture) do
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{:ok, picture} ->
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picture
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_ ->
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nil
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end
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end
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@doc """
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Convert a picture model into an AS Link representation.
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"""
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def make_picture_data(%Picture{} = picture) do
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Converter.Picture.model_to_as(picture)
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end
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@doc """
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Save picture data from raw data and return AS Link data.
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"""
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def make_picture_data(picture) when is_map(picture) do
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with {:ok, %{"url" => [%{"href" => url, "mediaType" => content_type}], "size" => size}} <-
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MobilizonWeb.Upload.store(picture.file),
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{:ok, %Picture{file: _file} = picture} <-
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Mobilizon.Media.create_picture(%{
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"file" => %{
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"url" => url,
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"name" => picture.name,
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"content_type" => content_type,
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"size" => size
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},
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"actor_id" => picture.actor_id
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}) do
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Converter.Picture.model_to_as(picture)
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end
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end
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def make_picture_data(nil), do: nil
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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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@spec make_event_data(
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String.t(),
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map(),
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String.t(),
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String.t(),
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map(),
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list(),
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map(),
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String.t()
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) :: map()
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def make_event_data(
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actor,
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%{to: to, cc: cc} = _audience,
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title,
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content_html,
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picture \\ nil,
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tags \\ [],
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metadata \\ %{},
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uuid \\ nil,
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url \\ nil
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) do
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Logger.debug("Making event data")
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uuid = uuid || Ecto.UUID.generate()
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res = %{
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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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"startTime" => metadata.begins_on,
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"endTime" => metadata.ends_on,
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"category" => metadata.category,
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"actor" => actor,
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"id" => url || Routes.page_url(Endpoint, :event, uuid),
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"joinOptions" => metadata.join_options,
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"status" => metadata.status,
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"onlineAddress" => metadata.online_address,
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"phoneAddress" => metadata.phone_address,
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"uuid" => uuid,
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"tag" =>
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tags |> Enum.uniq() |> Enum.map(fn tag -> %{"type" => "Hashtag", "name" => "##{tag}"} end)
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}
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res =
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if is_nil(metadata.physical_address),
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do: res,
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else: Map.put(res, "location", make_address_data(metadata.physical_address))
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res =
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if is_nil(picture), do: res, else: Map.put(res, "attachment", [make_picture_data(picture)])
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if is_nil(metadata.options) do
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res
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else
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options = Events.EventOptions |> struct(metadata.options) |> Map.from_struct()
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Enum.reduce(options, res, fn {key, value}, acc ->
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(value && Map.put(acc, camelize(key), value)) ||
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acc
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end)
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end
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end
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def make_address_data(%Address{} = address) do
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# res = %{
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# "type" => "Place",
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# "name" => address.description,
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# "id" => address.url,
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# "address" => %{
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# "type" => "PostalAddress",
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# "streetAddress" => address.street,
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# "postalCode" => address.postal_code,
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# "addressLocality" => address.locality,
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# "addressRegion" => address.region,
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# "addressCountry" => address.country
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# }
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# }
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#
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# if is_nil(address.geom) do
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# res
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# else
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# Map.put(res, "geo", %{
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# "type" => "GeoCoordinates",
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# "latitude" => address.geom.coordinates |> elem(0),
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# "longitude" => address.geom.coordinates |> elem(1)
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# })
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# end
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address.url
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end
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def make_address_data(address) when is_map(address) do
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Address
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|> struct(address)
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|> make_address_data()
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end
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def make_address_data(address_url) when is_bitstring(address_url) do
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with %Address{} = address <- Addresses.get_address_by_url(address_url) do
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address.url
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end
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end
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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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def make_comment_data(
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actor,
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to,
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content_html,
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# attachments,
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inReplyTo \\ nil,
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tags \\ [],
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# _cw \\ nil,
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cc \\ []
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) do
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Logger.debug("Making comment data")
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uuid = Ecto.UUID.generate()
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object = %{
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"type" => "Note",
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"to" => to,
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"cc" => cc,
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"content" => content_html,
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# "summary" => cw,
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# "attachment" => attachments,
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"actor" => actor,
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"id" => Routes.page_url(Endpoint, :comment, uuid),
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"uuid" => uuid,
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"tag" => tags |> Enum.uniq()
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}
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if inReplyTo do
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object
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|> Map.put("inReplyTo", inReplyTo)
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else
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object
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end
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end
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def make_group_data(
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actor,
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to,
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preferred_username,
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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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) do
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uuid = Ecto.UUID.generate()
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%{
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"type" => "Group",
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"to" => to,
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"cc" => cc,
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"summary" => content_html,
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"attributedTo" => actor,
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"preferredUsername" => preferred_username,
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"id" => Actor.build_url(preferred_username, :page),
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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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#### Like-related helpers
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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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# @spec get_existing_like(Actor.t, map()) :: nil
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# def get_existing_like(%Actor{url: url} = actor, %{data: %{"id" => id}}) do
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# nil
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# end
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# def make_like_data(%Actor{url: url} = actor, %{data: %{"id" => id}} = object, activity_id) do
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# data = %{
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# "type" => "Like",
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# "actor" => url,
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# "object" => id,
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# "to" => [actor.followers_url, object.data["actor"]],
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# "cc" => ["https://www.w3.org/ns/activitystreams#Public"],
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# "context" => object.data["context"]
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# }
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# if activity_id, do: Map.put(data, "id", activity_id), else: data
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# end
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def update_element_in_object(property, element, object) do
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with new_data <-
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object.data
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|> Map.put("#{property}_count", length(element))
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|> Map.put("#{property}s", element),
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changeset <- Changeset.change(object, data: new_data),
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{:ok, object} <- Repo.update(changeset) do
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{:ok, object}
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end
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end
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# def update_likes_in_object(likes, object) do
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# update_element_in_object("like", likes, object)
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# end
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#
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# def add_like_to_object(%Activity{data: %{"actor" => actor}}, object) do
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# with likes <- [actor | object.data["likes"] || []] |> Enum.uniq() do
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# update_likes_in_object(likes, object)
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# end
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# end
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#
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# def remove_like_from_object(%Activity{data: %{"actor" => actor}}, object) do
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# with likes <- (object.data["likes"] || []) |> List.delete(actor) do
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# update_likes_in_object(likes, object)
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# end
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# end
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#### Follow-related helpers
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@doc """
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Makes a follow activity data for the given followed and follower
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"""
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def make_follow_data(%Actor{url: followed_id}, %Actor{url: follower_id}, activity_id) do
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Logger.debug("Make follow data")
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data = %{
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"type" => "Follow",
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"actor" => follower_id,
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"to" => [followed_id],
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"cc" => ["https://www.w3.org/ns/activitystreams#Public"],
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"object" => followed_id
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}
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data =
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if activity_id,
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do: Map.put(data, "id", activity_id),
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else: data
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Logger.debug(inspect(data))
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data
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end
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#### Announce-related helpers
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require Logger
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@doc """
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Make announce activity data for the given actor and object
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"""
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def make_announce_data(actor, object, activity_id, public \\ true)
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def make_announce_data(
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%Actor{url: actor_url, followers_url: actor_followers_url} = _actor,
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%{"id" => url, "type" => type} = _object,
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|
activity_id,
|
|
public
|
|
)
|
|
when type in @actor_types do
|
|
do_make_announce_data(actor_url, actor_followers_url, url, url, activity_id, public)
|
|
end
|
|
|
|
def make_announce_data(
|
|
%Actor{url: actor_url, followers_url: actor_followers_url} = _actor,
|
|
%{"id" => url, "type" => type, "actor" => object_actor_url} = _object,
|
|
activity_id,
|
|
public
|
|
)
|
|
when type in ["Note", "Event"] do
|
|
do_make_announce_data(
|
|
actor_url,
|
|
actor_followers_url,
|
|
object_actor_url,
|
|
url,
|
|
activity_id,
|
|
public
|
|
)
|
|
end
|
|
|
|
defp do_make_announce_data(
|
|
actor_url,
|
|
actor_followers_url,
|
|
object_actor_url,
|
|
object_url,
|
|
activity_id,
|
|
public
|
|
) do
|
|
{to, cc} =
|
|
if public do
|
|
{[actor_followers_url, object_actor_url],
|
|
["https://www.w3.org/ns/activitystreams#Public"]}
|
|
else
|
|
{[actor_followers_url], []}
|
|
end
|
|
|
|
data = %{
|
|
"type" => "Announce",
|
|
"actor" => actor_url,
|
|
"object" => object_url,
|
|
"to" => to,
|
|
"cc" => cc
|
|
}
|
|
|
|
if activity_id, do: Map.put(data, "id", activity_id), else: data
|
|
end
|
|
|
|
@doc """
|
|
Make unannounce activity data for the given actor and object
|
|
"""
|
|
def make_unannounce_data(
|
|
%Actor{url: url} = actor,
|
|
activity,
|
|
activity_id
|
|
) do
|
|
data = %{
|
|
"type" => "Undo",
|
|
"actor" => url,
|
|
"object" => activity,
|
|
"to" => [actor.followers_url, actor.url],
|
|
"cc" => ["https://www.w3.org/ns/activitystreams#Public"]
|
|
}
|
|
|
|
if activity_id, do: Map.put(data, "id", activity_id), else: data
|
|
end
|
|
|
|
#### Unfollow-related helpers
|
|
|
|
@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 = %{
|
|
"type" => "Undo",
|
|
"actor" => follower_url,
|
|
"to" => [followed_url],
|
|
"object" => follow_activity.data
|
|
}
|
|
|
|
if activity_id, do: Map.put(data, "id", activity_id), else: data
|
|
end
|
|
|
|
#### Create-related helpers
|
|
|
|
@doc """
|
|
Make create activity data
|
|
"""
|
|
@spec make_create_data(map(), map()) :: map()
|
|
def make_create_data(params, additional \\ %{}) do
|
|
Logger.debug("Making create data")
|
|
Logger.debug(inspect(params))
|
|
published = params.published || make_date()
|
|
|
|
%{
|
|
"type" => "Create",
|
|
"to" => params.to |> Enum.uniq(),
|
|
"actor" => params.actor.url,
|
|
"object" => params.object,
|
|
"published" => published,
|
|
"id" => params.object["id"] <> "/activity"
|
|
}
|
|
|> Map.merge(additional)
|
|
end
|
|
|
|
#### Flag-related helpers
|
|
@spec make_flag_data(map(), map()) :: map()
|
|
def make_flag_data(params, additional) do
|
|
object = [params.reported_actor_url] ++ params.comments_url
|
|
|
|
object = if params[:event_url], do: object ++ [params.event_url], else: object
|
|
|
|
%{
|
|
"type" => "Flag",
|
|
"id" => "#{MobilizonWeb.Endpoint.url()}/report/#{Ecto.UUID.generate()}",
|
|
"actor" => params.reporter_url,
|
|
"content" => params.content,
|
|
"object" => object,
|
|
"state" => "open"
|
|
}
|
|
|> Map.merge(additional)
|
|
end
|
|
|
|
def make_join_data(%Event{} = event, %Actor{} = actor) do
|
|
%{
|
|
"type" => "Join",
|
|
"id" => "#{actor.url}/join/event/id",
|
|
"actor" => actor.url,
|
|
"object" => event.url
|
|
}
|
|
end
|
|
|
|
def make_join_data(%Actor{type: :Group} = event, %Actor{} = actor) do
|
|
%{
|
|
"type" => "Join",
|
|
"id" => "#{actor.url}/join/group/id",
|
|
"actor" => actor.url,
|
|
"object" => event.url
|
|
}
|
|
end
|
|
|
|
@doc """
|
|
Converts PEM encoded keys to a public key representation
|
|
"""
|
|
def pem_to_public_key(pem) do
|
|
[key_code] = :public_key.pem_decode(pem)
|
|
key = :public_key.pem_entry_decode(key_code)
|
|
|
|
case key do
|
|
{:RSAPrivateKey, _, modulus, exponent, _, _, _, _, _, _, _} ->
|
|
{:RSAPublicKey, modulus, exponent}
|
|
|
|
{:RSAPublicKey, modulus, exponent} ->
|
|
{:RSAPublicKey, modulus, exponent}
|
|
end
|
|
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
|
|
|
|
def camelize(word) when is_atom(word) do
|
|
camelize(to_string(word))
|
|
end
|
|
|
|
def camelize(word) when is_bitstring(word) do
|
|
{first, rest} = String.split_at(Macro.camelize(word), 1)
|
|
String.downcase(first) <> rest
|
|
end
|
|
|
|
def underscore(word) when is_atom(word) do
|
|
underscore(to_string(word))
|
|
end
|
|
|
|
def underscore(word) when is_bitstring(word) do
|
|
Macro.underscore(word)
|
|
end
|
|
end
|