# Pleroma: A lightweight social networking server # Copyright © 2017-2019 Pleroma Authors # SPDX-License-Identifier: AGPL-3.0-only defmodule Pleroma.Web.TwitterAPI.ActivityView do use Pleroma.Web, :view alias Pleroma.Web.CommonAPI.Utils alias Pleroma.User alias Pleroma.Web.TwitterAPI.UserView alias Pleroma.Web.TwitterAPI.ActivityView alias Pleroma.Web.TwitterAPI.TwitterAPI alias Pleroma.Web.TwitterAPI.Representers.ObjectRepresenter alias Pleroma.Activity alias Pleroma.HTML alias Pleroma.Object alias Pleroma.User alias Pleroma.Repo alias Pleroma.Formatter import Ecto.Query require Logger defp query_context_ids([]), do: [] defp query_context_ids(contexts) do query = from(o in Object, where: fragment("(?)->>'id' = ANY(?)", o.data, ^contexts)) Repo.all(query) end defp query_users([]), do: [] defp query_users(user_ids) do query = from(user in User, where: user.ap_id in ^user_ids) Repo.all(query) end defp collect_context_ids(activities) do _contexts = activities |> Enum.reject(& &1.data["context_id"]) |> Enum.map(fn %{data: data} -> data["context"] end) |> Enum.filter(& &1) |> query_context_ids() |> Enum.reduce(%{}, fn %{data: %{"id" => ap_id}, id: id}, acc -> Map.put(acc, ap_id, id) end) end defp collect_users(activities) do activities |> Enum.map(fn activity -> case activity.data do data = %{"type" => "Follow"} -> [data["actor"], data["object"]] data -> [data["actor"]] end ++ activity.recipients end) |> List.flatten() |> Enum.uniq() |> query_users() |> Enum.reduce(%{}, fn user, acc -> Map.put(acc, user.ap_id, user) end) end defp get_context_id(%{data: %{"context_id" => context_id}}, _) when not is_nil(context_id), do: context_id defp get_context_id(%{data: %{"context" => nil}}, _), do: nil defp get_context_id(%{data: %{"context" => context}}, options) do cond do id = options[:context_ids][context] -> id true -> TwitterAPI.context_to_conversation_id(context) end end defp get_context_id(_, _), do: nil defp get_user(ap_id, opts) do cond do user = opts[:users][ap_id] -> user String.ends_with?(ap_id, "/followers") -> nil ap_id == "https://www.w3.org/ns/activitystreams#Public" -> nil user = User.get_cached_by_ap_id(ap_id) -> user user = User.get_by_guessed_nickname(ap_id) -> user true -> error_user(ap_id) end end defp error_user(ap_id) do %User{ name: ap_id, ap_id: ap_id, info: %User.Info{}, nickname: "erroruser@example.com", inserted_at: NaiveDateTime.utc_now() } end def render("index.json", opts) do context_ids = collect_context_ids(opts.activities) users = collect_users(opts.activities) opts = opts |> Map.put(:context_ids, context_ids) |> Map.put(:users, users) render_many( opts.activities, ActivityView, "activity.json", opts ) end def render("activity.json", %{activity: %{data: %{"type" => "Delete"}} = activity} = opts) do user = get_user(activity.data["actor"], opts) created_at = activity.data["published"] |> Utils.date_to_asctime() %{ "id" => activity.id, "uri" => activity.data["object"], "user" => UserView.render("show.json", %{user: user, for: opts[:for]}), "attentions" => [], "statusnet_html" => "deleted notice {{tag", "text" => "deleted notice {{tag", "is_local" => activity.local, "is_post_verb" => false, "created_at" => created_at, "in_reply_to_status_id" => nil, "external_url" => activity.data["id"], "activity_type" => "delete" } end def render("activity.json", %{activity: %{data: %{"type" => "Follow"}} = activity} = opts) do user = get_user(activity.data["actor"], opts) created_at = activity.data["published"] || DateTime.to_iso8601(activity.inserted_at) created_at = created_at |> Utils.date_to_asctime() followed = get_user(activity.data["object"], opts) text = "#{user.nickname} started following #{followed.nickname}" %{ "id" => activity.id, "user" => UserView.render("show.json", %{user: user, for: opts[:for]}), "attentions" => [], "statusnet_html" => text, "text" => text, "is_local" => activity.local, "is_post_verb" => false, "created_at" => created_at, "in_reply_to_status_id" => nil, "external_url" => activity.data["id"], "activity_type" => "follow" } end def render("activity.json", %{activity: %{data: %{"type" => "Announce"}} = activity} = opts) do user = get_user(activity.data["actor"], opts) created_at = activity.data["published"] |> Utils.date_to_asctime() announced_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"]) text = "#{user.nickname} retweeted a status." retweeted_status = render("activity.json", Map.merge(opts, %{activity: announced_activity})) %{ "id" => activity.id, "user" => UserView.render("show.json", %{user: user, for: opts[:for]}), "statusnet_html" => text, "text" => text, "is_local" => activity.local, "is_post_verb" => false, "uri" => "tag:#{activity.data["id"]}:objectType=note", "created_at" => created_at, "retweeted_status" => retweeted_status, "statusnet_conversation_id" => get_context_id(announced_activity, opts), "external_url" => activity.data["id"], "activity_type" => "repeat" } end def render("activity.json", %{activity: %{data: %{"type" => "Like"}} = activity} = opts) do user = get_user(activity.data["actor"], opts) liked_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"]) liked_activity_id = if liked_activity, do: liked_activity.id, else: nil created_at = activity.data["published"] |> Utils.date_to_asctime() text = "#{user.nickname} favorited a status." favorited_status = if liked_activity, do: render("activity.json", Map.merge(opts, %{activity: liked_activity})), else: nil %{ "id" => activity.id, "user" => UserView.render("show.json", %{user: user, for: opts[:for]}), "statusnet_html" => text, "text" => text, "is_local" => activity.local, "is_post_verb" => false, "uri" => "tag:#{activity.data["id"]}:objectType=Favourite", "created_at" => created_at, "favorited_status" => favorited_status, "in_reply_to_status_id" => liked_activity_id, "external_url" => activity.data["id"], "activity_type" => "like" } end def render( "activity.json", %{activity: %{data: %{"type" => "Create", "object" => object}} = activity} = opts ) do user = get_user(activity.data["actor"], opts) created_at = object["published"] |> Utils.date_to_asctime() like_count = object["like_count"] || 0 announcement_count = object["announcement_count"] || 0 favorited = opts[:for] && opts[:for].ap_id in (object["likes"] || []) repeated = opts[:for] && opts[:for].ap_id in (object["announcements"] || []) pinned = activity.id in user.info.pinned_activities attentions = [] |> Utils.maybe_notify_to_recipients(activity) |> Utils.maybe_notify_mentioned_recipients(activity) |> Enum.map(fn ap_id -> get_user(ap_id, opts) end) |> Enum.filter(& &1) |> Enum.map(fn user -> UserView.render("show.json", %{user: user, for: opts[:for]}) end) conversation_id = get_context_id(activity, opts) tags = activity.data["object"]["tag"] || [] possibly_sensitive = activity.data["object"]["sensitive"] || Enum.member?(tags, "nsfw") tags = if possibly_sensitive, do: Enum.uniq(["nsfw" | tags]), else: tags {summary, content} = render_content(object) html = content |> HTML.get_cached_scrubbed_html_for_object( User.html_filter_policy(opts[:for]), activity, __MODULE__ ) |> Formatter.emojify(object["emoji"]) text = if content do content |> String.replace(~r//, "\n") |> HTML.get_cached_stripped_html_for_object(activity, __MODULE__) end reply_parent = Activity.get_in_reply_to_activity(activity) reply_user = reply_parent && User.get_cached_by_ap_id(reply_parent.actor) summary = HTML.strip_tags(summary) %{ "id" => activity.id, "uri" => activity.data["object"]["id"], "user" => UserView.render("show.json", %{user: user, for: opts[:for]}), "statusnet_html" => html, "text" => text, "is_local" => activity.local, "is_post_verb" => true, "created_at" => created_at, "in_reply_to_status_id" => object["inReplyToStatusId"], "in_reply_to_screen_name" => reply_user && reply_user.nickname, "in_reply_to_profileurl" => User.profile_url(reply_user), "in_reply_to_ostatus_uri" => reply_user && reply_user.ap_id, "in_reply_to_user_id" => reply_user && reply_user.id, "statusnet_conversation_id" => conversation_id, "attachments" => (object["attachment"] || []) |> ObjectRepresenter.enum_to_list(opts), "attentions" => attentions, "fave_num" => like_count, "repeat_num" => announcement_count, "favorited" => !!favorited, "repeated" => !!repeated, "pinned" => pinned, "external_url" => object["external_url"] || object["id"], "tags" => tags, "activity_type" => "post", "possibly_sensitive" => possibly_sensitive, "visibility" => Pleroma.Web.MastodonAPI.StatusView.get_visibility(object), "summary" => summary, "summary_html" => summary |> Formatter.emojify(object["emoji"]) } end def render("activity.json", %{activity: unhandled_activity}) do Logger.warn("#{__MODULE__} unhandled activity: #{inspect(unhandled_activity)}") nil end def render_content(%{"type" => "Note"} = object) do summary = object["summary"] content = if !!summary and summary != "" do "

#{summary}

#{object["content"]}" else object["content"] end {summary, content} end def render_content(%{"type" => object_type} = object) when object_type in ["Article", "Page", "Video"] do summary = object["name"] || object["summary"] content = if !!summary and summary != "" and is_bitstring(object["url"]) do "

#{summary}

#{object["content"]}" else object["content"] end {summary, content} end def render_content(object) do summary = object["summary"] || "Unhandled activity type: #{object["type"]}" content = "

#{summary}

#{object["content"]}" {summary, content} end end