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       user = User.get_cached_by_ap_id(ap_id) ->
  98         user
  99
 100       user = User.get_by_guessed_nickname(ap_id) ->
 101         user
 102
 103       true ->
 104         error_user()
 105     end
 106   end
 107
 108   defp error_user do
 109     %User{
 110       info: %User.Info{},
 111       nickname: "erroruser@example.com",
 112       inserted_at: NaiveDateTime.utc_now()
 113     }
 114   end
 115
 116   def render("index.json", opts) do
 117     context_ids = collect_context_ids(opts.activities)
 118     users = collect_users(opts.activities)
 119
 120     opts =
 121       opts
 122       |> Map.put(:context_ids, context_ids)
 123       |> Map.put(:users, users)
 124
 125     render_many(
 126       opts.activities,
 127       ActivityView,
 128       "activity.json",
 129       opts
 130     )
 131   end
 132
 133   def render("activity.json", %{activity: %{data: %{"type" => "Delete"}} = activity} = opts) do
 134     user = get_user(activity.data["actor"], opts)
 135     created_at = activity.data["published"] |> Utils.date_to_asctime()
 136
 137     %{
 138       "id" => activity.id,
 139       "uri" => activity.data["object"],
 140       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 141       "attentions" => [],
 142       "statusnet_html" => "deleted notice {{tag",
 143       "text" => "deleted notice {{tag",
 144       "is_local" => activity.local,
 145       "is_post_verb" => false,
 146       "created_at" => created_at,
 147       "in_reply_to_status_id" => nil,
 148       "external_url" => activity.data["id"],
 149       "activity_type" => "delete"
 150     }
 151   end
 152
 153   def render("activity.json", %{activity: %{data: %{"type" => "Follow"}} = activity} = opts) do
 154     user = get_user(activity.data["actor"], opts)
 155     created_at = activity.data["published"] || DateTime.to_iso8601(activity.inserted_at)
 156     created_at = created_at |> Utils.date_to_asctime()
 157
 158     followed = get_user(activity.data["object"], opts)
 159     text = "#{user.nickname} started following #{followed.nickname}"
 160
 161     %{
 162       "id" => activity.id,
 163       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 164       "attentions" => [],
 165       "statusnet_html" => text,
 166       "text" => text,
 167       "is_local" => activity.local,
 168       "is_post_verb" => false,
 169       "created_at" => created_at,
 170       "in_reply_to_status_id" => nil,
 171       "external_url" => activity.data["id"],
 172       "activity_type" => "follow"
 173     }
 174   end
 175
 176   def render("activity.json", %{activity: %{data: %{"type" => "Announce"}} = activity} = opts) do
 177     user = get_user(activity.data["actor"], opts)
 178     created_at = activity.data["published"] |> Utils.date_to_asctime()
 179     announced_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"])
 180
 181     text = "#{user.nickname} retweeted a status."
 182
 183     retweeted_status = render("activity.json", Map.merge(opts, %{activity: announced_activity}))
 184
 185     %{
 186       "id" => activity.id,
 187       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 188       "statusnet_html" => text,
 189       "text" => text,
 190       "is_local" => activity.local,
 191       "is_post_verb" => false,
 192       "uri" => "tag:#{activity.data["id"]}:objectType=note",
 193       "created_at" => created_at,
 194       "retweeted_status" => retweeted_status,
 195       "statusnet_conversation_id" => get_context_id(announced_activity, opts),
 196       "external_url" => activity.data["id"],
 197       "activity_type" => "repeat"
 198     }
 199   end
 200
 201   def render("activity.json", %{activity: %{data: %{"type" => "Like"}} = activity} = opts) do
 202     user = get_user(activity.data["actor"], opts)
 203     liked_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"])
 204     liked_activity_id = if liked_activity, do: liked_activity.id, else: nil
 205
 206     created_at =
 207       activity.data["published"]
 208       |> Utils.date_to_asctime()
 209
 210     text = "#{user.nickname} favorited a status."
 211
 212     favorited_status =
 213       if liked_activity,
 214         do: render("activity.json", Map.merge(opts, %{activity: liked_activity})),
 215         else: nil
 216
 217     %{
 218       "id" => activity.id,
 219       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 220       "statusnet_html" => text,
 221       "text" => text,
 222       "is_local" => activity.local,
 223       "is_post_verb" => false,
 224       "uri" => "tag:#{activity.data["id"]}:objectType=Favourite",
 225       "created_at" => created_at,
 226       "favorited_status" => favorited_status,
 227       "in_reply_to_status_id" => liked_activity_id,
 228       "external_url" => activity.data["id"],
 229       "activity_type" => "like"
 230     }
 231   end
 232
 233   def render(
 234         "activity.json",
 235         %{activity: %{data: %{"type" => "Create", "object" => object}} = activity} = opts
 236       ) do
 237     user = get_user(activity.data["actor"], opts)
 238
 239     created_at = object["published"] |> Utils.date_to_asctime()
 240     like_count = object["like_count"] || 0
 241     announcement_count = object["announcement_count"] || 0
 242     favorited = opts[:for] && opts[:for].ap_id in (object["likes"] || [])
 243     repeated = opts[:for] && opts[:for].ap_id in (object["announcements"] || [])
 244
 245     attentions =
 246       activity.recipients
 247       |> Enum.map(fn ap_id -> get_user(ap_id, opts) end)
 248       |> Enum.filter(& &1)
 249       |> Enum.map(fn user -> UserView.render("show.json", %{user: user, for: opts[:for]}) end)
 250
 251     conversation_id = get_context_id(activity, opts)
 252
 253     tags = activity.data["object"]["tag"] || []
 254     possibly_sensitive = activity.data["object"]["sensitive"] || Enum.member?(tags, "nsfw")
 255
 256     tags = if possibly_sensitive, do: Enum.uniq(["nsfw" | tags]), else: tags
 257
 258     {summary, content} = render_content(object)
 259
 260     html =
 261       content
 262       |> HTML.get_cached_scrubbed_html_for_object(
 263         User.html_filter_policy(opts[:for]),
 264         activity,
 265         __MODULE__
 266       )
 267       |> Formatter.emojify(object["emoji"])
 268
 269     text =
 270       if content do
 271         content
 272         |> String.replace(~r/<br\s?\/?>/, "\n")
 273         |> HTML.get_cached_stripped_html_for_object(activity, __MODULE__)
 274       end
 275
 276     reply_parent = Activity.get_in_reply_to_activity(activity)
 277
 278     reply_user = reply_parent && User.get_cached_by_ap_id(reply_parent.actor)
 279
 280     %{
 281       "id" => activity.id,
 282       "uri" => activity.data["object"]["id"],
 283       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
 284       "statusnet_html" => html,
 285       "text" => text,
 286       "is_local" => activity.local,
 287       "is_post_verb" => true,
 288       "created_at" => created_at,
 289       "in_reply_to_status_id" => object["inReplyToStatusId"],
 290       "in_reply_to_screen_name" => reply_user && reply_user.nickname,
 291       "in_reply_to_profileurl" => User.profile_url(reply_user),
 292       "in_reply_to_ostatus_uri" => reply_user && reply_user.ap_id,
 293       "in_reply_to_user_id" => reply_user && reply_user.id,
 294       "statusnet_conversation_id" => conversation_id,
 295       "attachments" => (object["attachment"] || []) |> ObjectRepresenter.enum_to_list(opts),
 296       "attentions" => attentions,
 297       "fave_num" => like_count,
 298       "repeat_num" => announcement_count,
 299       "favorited" => !!favorited,
 300       "repeated" => !!repeated,
 301       "external_url" => object["external_url"] || object["id"],
 302       "tags" => tags,
 303       "activity_type" => "post",
 304       "possibly_sensitive" => possibly_sensitive,
 305       "visibility" => Pleroma.Web.MastodonAPI.StatusView.get_visibility(object),
 306       "summary" => HTML.strip_tags(summary) |> Formatter.emojify(object["emoji"])
 307     }
 308   end
 309
 310   def render("activity.json", %{activity: unhandled_activity}) do
 311     Logger.warn("#{__MODULE__} unhandled activity: #{inspect(unhandled_activity)}")
 312     nil
 313   end
 314
 315   def render_content(%{"type" => "Note"} = object) do
 316     summary = object["summary"]
 317
 318     content =
 319       if !!summary and summary != "" do
 320         "<p>#{summary}</p>#{object["content"]}"
 321       else
 322         object["content"]
 323       end
 324
 325     {summary, content}
 326   end
 327
 328   def render_content(%{"type" => object_type} = object)
 329       when object_type in ["Article", "Page", "Video"] do
 330     summary = object["name"] || object["summary"]
 331
 332     content =
 333       if !!summary and summary != "" and is_bitstring(object["url"]) do
 334         "<p><a href=\"#{object["url"]}\">#{summary}</a></p>#{object["content"]}"
 335       else
 336         object["content"]
 337       end
 338
 339     {summary, content}
 340   end
 341
 342   def render_content(object) do
 343     summary = object["summary"] || "Unhandled activity type: #{object["type"]}"
 344     content = "<p>#{summary}</p>#{object["content"]}"
 345
 346     {summary, content}
 347   end
 348 end