git.squeep.com Git - akkoma/blob - lib/pleroma/web/twitter_api/views/activity_view.ex

   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.TwitterAPI.ActivityView do
   6   use Pleroma.Web, :view
   7   alias Pleroma.Web.CommonAPI.Utils
   8   alias Pleroma.User
   9   alias Pleroma.Web.TwitterAPI.UserView
  10   alias Pleroma.Web.TwitterAPI.ActivityView
  11   alias Pleroma.Web.TwitterAPI.TwitterAPI
  12   alias Pleroma.Web.TwitterAPI.Representers.ObjectRepresenter
  13   alias Pleroma.Activity
  14   alias Pleroma.HTML
  15   alias Pleroma.Object
  16   alias Pleroma.User
  17   alias Pleroma.Repo
  18   alias Pleroma.Formatter
  19
  20   import Ecto.Query
  21   require Logger
  22
  23   defp query_context_ids([]), do: []
  24
  25   defp query_context_ids(contexts) do
  26     query = from(o in Object, where: fragment("(?)->>'id' = ANY(?)", o.data, ^contexts))
  27
  28     Repo.all(query)
  29   end
  30
  31   defp query_users([]), do: []
  32
  33   defp query_users(user_ids) do
  34     query = from(user in User, where: user.ap_id in ^user_ids)
  35
  36     Repo.all(query)
  37   end
  38
  39   defp collect_context_ids(activities) do
  40     _contexts =
  41       activities
  42       |> Enum.reject(& &1.data["context_id"])
  43       |> Enum.map(fn %{data: data} ->
  44         data["context"]
  45       end)
  46       |> Enum.filter(& &1)
  47       |> query_context_ids()
  48       |> Enum.reduce(%{}, fn %{data: %{"id" => ap_id}, id: id}, acc ->
  49         Map.put(acc, ap_id, id)
  50       end)
  51   end
  52
  53   defp collect_users(activities) do
  54     activities
  55     |> Enum.map(fn activity ->
  56       case activity.data do
  57         data = %{"type" => "Follow"} ->
  58           [data["actor"], data["object"]]
  59
  60         data ->
  61           [data["actor"]]
  62       end ++ activity.recipients
  63     end)
  64     |> List.flatten()
  65     |> Enum.uniq()
  66     |> query_users()
  67     |> Enum.reduce(%{}, fn user, acc ->
  68       Map.put(acc, user.ap_id, user)
  69     end)
  70   end
  71
  72   defp get_context_id(%{data: %{"context_id" => context_id}}, _) when not is_nil(context_id),
  73     do: context_id
  74
  75   defp get_context_id(%{data: %{"context" => nil}}, _), do: nil
  76
  77   defp get_context_id(%{data: %{"context" => context}}, options) do
  78     cond do
  79       id = options[:context_ids][context] -> id
  80       true -> TwitterAPI.context_to_conversation_id(context)
  81     end
  82   end
  83
  84   defp get_context_id(_, _), do: nil
  85
  86   defp get_user(ap_id, opts) do
  87     cond do
  88       user = opts[:users][ap_id] ->
  89         user
  90
  91       String.ends_with?(ap_id, "/followers") ->
  92         nil
  93
  94       ap_id == "https://www.w3.org/ns/activitystreams#Public" ->
  95         nil
  96
  97       true ->
  98         User.get_cached_by_ap_id(ap_id)
  99     end
 100   end
 101
 102   def render("index.json", opts) do
 103     context_ids = collect_context_ids(opts.activities)
 104     users = collect_users(opts.activities)
 105
 106     opts =
 107       opts
 108       |> Map.put(:context_ids, context_ids)
 109       |> Map.put(:users, users)
 110
 111     render_many(
 112       opts.activities,
 113       ActivityView,
 114       "activity.json",
 115       opts
 116     )
 117   end
 118
 119   def render("activity.json", %{activity: %{data: %{"type" => "Delete"}} = activity} = opts) do
 120     user = get_user(activity.data["actor"], opts)
 121     created_at = activity.data["published"] |> Utils.date_to_asctime()
 122
 123     %{
 124       "id" => activity.id,
 125       "uri" => activity.data["object"],
 126       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 127       "attentions" => [],
 128       "statusnet_html" => "deleted notice {{tag",
 129       "text" => "deleted notice {{tag",
 130       "is_local" => activity.local,
 131       "is_post_verb" => false,
 132       "created_at" => created_at,
 133       "in_reply_to_status_id" => nil,
 134       "external_url" => activity.data["id"],
 135       "activity_type" => "delete"
 136     }
 137   end
 138
 139   def render("activity.json", %{activity: %{data: %{"type" => "Follow"}} = activity} = opts) do
 140     user = get_user(activity.data["actor"], opts)
 141     created_at = activity.data["published"] || DateTime.to_iso8601(activity.inserted_at)
 142     created_at = created_at |> Utils.date_to_asctime()
 143
 144     followed = get_user(activity.data["object"], opts)
 145     text = "#{user.nickname} started following #{followed.nickname}"
 146
 147     %{
 148       "id" => activity.id,
 149       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 150       "attentions" => [],
 151       "statusnet_html" => text,
 152       "text" => text,
 153       "is_local" => activity.local,
 154       "is_post_verb" => false,
 155       "created_at" => created_at,
 156       "in_reply_to_status_id" => nil,
 157       "external_url" => activity.data["id"],
 158       "activity_type" => "follow"
 159     }
 160   end
 161
 162   def render("activity.json", %{activity: %{data: %{"type" => "Announce"}} = activity} = opts) do
 163     user = get_user(activity.data["actor"], opts)
 164     created_at = activity.data["published"] |> Utils.date_to_asctime()
 165     announced_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"])
 166
 167     text = "#{user.nickname} retweeted a status."
 168
 169     retweeted_status = render("activity.json", Map.merge(opts, %{activity: announced_activity}))
 170
 171     %{
 172       "id" => activity.id,
 173       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 174       "statusnet_html" => text,
 175       "text" => text,
 176       "is_local" => activity.local,
 177       "is_post_verb" => false,
 178       "uri" => "tag:#{activity.data["id"]}:objectType=note",
 179       "created_at" => created_at,
 180       "retweeted_status" => retweeted_status,
 181       "statusnet_conversation_id" => get_context_id(announced_activity, opts),
 182       "external_url" => activity.data["id"],
 183       "activity_type" => "repeat"
 184     }
 185   end
 186
 187   def render("activity.json", %{activity: %{data: %{"type" => "Like"}} = activity} = opts) do
 188     user = get_user(activity.data["actor"], opts)
 189     liked_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"])
 190     liked_activity_id = if liked_activity, do: liked_activity.id, else: nil
 191
 192     created_at =
 193       activity.data["published"]
 194       |> Utils.date_to_asctime()
 195
 196     text = "#{user.nickname} favorited a status."
 197
 198     favorited_status =
 199       if liked_activity,
 200         do: render("activity.json", Map.merge(opts, %{activity: liked_activity})),
 201         else: nil
 202
 203     %{
 204       "id" => activity.id,
 205       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 206       "statusnet_html" => text,
 207       "text" => text,
 208       "is_local" => activity.local,
 209       "is_post_verb" => false,
 210       "uri" => "tag:#{activity.data["id"]}:objectType=Favourite",
 211       "created_at" => created_at,
 212       "favorited_status" => favorited_status,
 213       "in_reply_to_status_id" => liked_activity_id,
 214       "external_url" => activity.data["id"],
 215       "activity_type" => "like"
 216     }
 217   end
 218
 219   def render(
 220         "activity.json",
 221         %{activity: %{data: %{"type" => "Create", "object" => object}} = activity} = opts
 222       ) do
 223     user = get_user(activity.data["actor"], opts)
 224
 225     created_at = object["published"] |> Utils.date_to_asctime()
 226     like_count = object["like_count"] || 0
 227     announcement_count = object["announcement_count"] || 0
 228     favorited = opts[:for] && opts[:for].ap_id in (object["likes"] || [])
 229     repeated = opts[:for] && opts[:for].ap_id in (object["announcements"] || [])
 230
 231     attentions =
 232       activity.recipients
 233       |> Enum.map(fn ap_id -> get_user(ap_id, opts) end)
 234       |> Enum.filter(& &1)
 235       |> Enum.map(fn user -> UserView.render("show.json", %{user: user, for: opts[:for]}) end)
 236
 237     conversation_id = get_context_id(activity, opts)
 238
 239     tags = activity.data["object"]["tag"] || []
 240     possibly_sensitive = activity.data["object"]["sensitive"] || Enum.member?(tags, "nsfw")
 241
 242     tags = if possibly_sensitive, do: Enum.uniq(["nsfw" | tags]), else: tags
 243
 244     {summary, content} = render_content(object)
 245
 246     html =
 247       content
 248       |> HTML.get_cached_scrubbed_html_for_object(
 249         User.html_filter_policy(opts[:for]),
 250         activity,
 251         __MODULE__
 252       )
 253       |> Formatter.emojify(object["emoji"])
 254
 255     text =
 256       if content do
 257         content
 258         |> String.replace(~r/<br\s?\/?>/, "\n")
 259         |> HTML.get_cached_stripped_html_for_object(activity, __MODULE__)
 260       end
 261
 262     reply_parent = Activity.get_in_reply_to_activity(activity)
 263
 264     reply_user = reply_parent && User.get_cached_by_ap_id(reply_parent.actor)
 265
 266     %{
 267       "id" => activity.id,
 268       "uri" => activity.data["object"]["id"],
 269       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 270       "statusnet_html" => html,
 271       "text" => text,
 272       "is_local" => activity.local,
 273       "is_post_verb" => true,
 274       "created_at" => created_at,
 275       "in_reply_to_status_id" => object["inReplyToStatusId"],
 276       "in_reply_to_screen_name" => reply_user && reply_user.nickname,
 277       "in_reply_to_profileurl" => User.profile_url(reply_user),
 278       "in_reply_to_ostatus_uri" => reply_user && reply_user.ap_id,
 279       "in_reply_to_user_id" => reply_user && reply_user.id,
 280       "statusnet_conversation_id" => conversation_id,
 281       "attachments" => (object["attachment"] || []) |> ObjectRepresenter.enum_to_list(opts),
 282       "attentions" => attentions,
 283       "fave_num" => like_count,
 284       "repeat_num" => announcement_count,
 285       "favorited" => !!favorited,
 286       "repeated" => !!repeated,
 287       "external_url" => object["external_url"] || object["id"],
 288       "tags" => tags,
 289       "activity_type" => "post",
 290       "possibly_sensitive" => possibly_sensitive,
 291       "visibility" => Pleroma.Web.MastodonAPI.StatusView.get_visibility(object),
 292       "summary" => HTML.strip_tags(summary) |> Formatter.emojify(object["emoji"])
 293     }
 294   end
 295
 296   def render("activity.json", %{activity: unhandled_activity}) do
 297     Logger.warn("#{__MODULE__} unhandled activity: #{inspect(unhandled_activity)}")
 298     nil
 299   end
 300
 301   def render_content(%{"type" => "Note"} = object) do
 302     summary = object["summary"]
 303
 304     content =
 305       if !!summary and summary != "" do
 306         "<p>#{summary}</p>#{object["content"]}"
 307       else
 308         object["content"]
 309       end
 310
 311     {summary, content}
 312   end
 313
 314   def render_content(%{"type" => object_type} = object)
 315       when object_type in ["Article", "Page", "Video"] do
 316     summary = object["name"] || object["summary"]
 317
 318     content =
 319       if !!summary and summary != "" and is_bitstring(object["url"]) do
 320         "<p><a href=\"#{object["url"]}\">#{summary}</a></p>#{object["content"]}"
 321       else
 322         object["content"]
 323       end
 324
 325     {summary, content}
 326   end
 327
 328   def render_content(object) do
 329     summary = object["summary"] || "Unhandled activity type: #{object["type"]}"
 330     content = "<p>#{summary}</p>#{object["content"]}"
 331
 332     {summary, content}
 333   end
 334 end