git.squeep.com Git - akkoma/blob - lib/pleroma/web/ostatus/activity_representer.ex

   1 defmodule Pleroma.Web.OStatus.ActivityRepresenter do
   2   alias Pleroma.{Activity, User, Object}
   3   alias Pleroma.Web.OStatus.UserRepresenter
   4   alias Pleroma.Formatter
   5   require Logger
   6
   7   defp get_href(id) do
   8     with %Object{data: %{"external_url" => external_url}} <- Object.get_cached_by_ap_id(id) do
   9       external_url
  10     else
  11       _e -> id
  12     end
  13   end
  14
  15   defp get_in_reply_to(%{"object" => %{"inReplyTo" => in_reply_to}}) do
  16     [
  17       {:"thr:in-reply-to",
  18        [ref: to_charlist(in_reply_to), href: to_charlist(get_href(in_reply_to))], []}
  19     ]
  20   end
  21
  22   defp get_in_reply_to(_), do: []
  23
  24   defp get_mentions(to) do
  25     Enum.map(to, fn id ->
  26       cond do
  27         # Special handling for the AP/Ostatus public collections
  28         "https://www.w3.org/ns/activitystreams#Public" == id ->
  29           {:link,
  30            [
  31              rel: "mentioned",
  32              "ostatus:object-type": "http://activitystrea.ms/schema/1.0/collection",
  33              href: "http://activityschema.org/collection/public"
  34            ], []}
  35
  36         # Ostatus doesn't handle follower collections, ignore these.
  37         Regex.match?(~r/^#{Pleroma.Web.base_url()}.+followers$/, id) ->
  38           []
  39
  40         true ->
  41           {:link,
  42            [
  43              rel: "mentioned",
  44              "ostatus:object-type": "http://activitystrea.ms/schema/1.0/person",
  45              href: id
  46            ], []}
  47       end
  48     end)
  49   end
  50
  51   defp get_links(%{local: true, data: data}) do
  52     h = fn str -> [to_charlist(str)] end
  53
  54     [
  55       {:link, [type: ['application/atom+xml'], href: h.(data["object"]["id"]), rel: 'self'], []},
  56       {:link, [type: ['text/html'], href: h.(data["object"]["id"]), rel: 'alternate'], []}
  57     ]
  58   end
  59
  60   defp get_links(%{
  61          local: false,
  62          data: %{
  63            "object" => %{
  64              "external_url" => external_url
  65            }
  66          }
  67        }) do
  68     h = fn str -> [to_charlist(str)] end
  69
  70     [
  71       {:link, [type: ['text/html'], href: h.(external_url), rel: 'alternate'], []}
  72     ]
  73   end
  74
  75   defp get_links(_activity), do: []
  76
  77   defp get_emoji_links(emojis) do
  78     Enum.map(emojis, fn {emoji, file} ->
  79       {:link, [name: to_charlist(emoji), rel: 'emoji', href: to_charlist(file)], []}
  80     end)
  81   end
  82
  83   def to_simple_form(activity, user, with_author \\ false)
  84
  85   def to_simple_form(%{data: %{"object" => %{"type" => "Note"}}} = activity, user, with_author) do
  86     h = fn str -> [to_charlist(str)] end
  87
  88     updated_at = activity.data["object"]["published"]
  89     inserted_at = activity.data["object"]["published"]
  90
  91     attachments =
  92       Enum.map(activity.data["object"]["attachment"] || [], fn attachment ->
  93         url = hd(attachment["url"])
  94
  95         {:link,
  96          [rel: 'enclosure', href: to_charlist(url["href"]), type: to_charlist(url["mediaType"])],
  97          []}
  98       end)
  99
 100     in_reply_to = get_in_reply_to(activity.data)
 101     author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
 102     mentions = activity.recipients |> get_mentions
 103
 104     categories =
 105       (activity.data["object"]["tag"] || [])
 106       |> Enum.map(fn tag ->
 107         if is_binary(tag) do
 108           {:category, [term: to_charlist(tag)], []}
 109         else
 110           nil
 111         end
 112       end)
 113       |> Enum.filter(& &1)
 114
 115     emoji_links = get_emoji_links(activity.data["object"]["emoji"] || %{})
 116
 117     summary =
 118       if activity.data["object"]["summary"] do
 119         [{:summary, [], h.(activity.data["object"]["summary"])}]
 120       else
 121         []
 122       end
 123
 124     [
 125       {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/note']},
 126       {:"activity:verb", ['http://activitystrea.ms/schema/1.0/post']},
 127       # For notes, federate the object id.
 128       {:id, h.(activity.data["object"]["id"])},
 129       {:title, ['New note by #{user.nickname}']},
 130       {:content, [type: 'html'],
 131        h.(activity.data["object"]["content"] |> String.replace(~r/[\n\r]/, ""))},
 132       {:published, h.(inserted_at)},
 133       {:updated, h.(updated_at)},
 134       {:"ostatus:conversation", [ref: h.(activity.data["context"])],
 135        h.(activity.data["context"])},
 136       {:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []}
 137     ] ++
 138       summary ++
 139       get_links(activity) ++
 140       categories ++ attachments ++ in_reply_to ++ author ++ mentions ++ emoji_links
 141   end
 142
 143   def to_simple_form(%{data: %{"type" => "Like"}} = activity, user, with_author) do
 144     h = fn str -> [to_charlist(str)] end
 145
 146     updated_at = activity.data["published"]
 147     inserted_at = activity.data["published"]
 148
 149     _in_reply_to = get_in_reply_to(activity.data)
 150     author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
 151     mentions = activity.recipients |> get_mentions
 152
 153     [
 154       {:"activity:verb", ['http://activitystrea.ms/schema/1.0/favorite']},
 155       {:id, h.(activity.data["id"])},
 156       {:title, ['New favorite by #{user.nickname}']},
 157       {:content, [type: 'html'], ['#{user.nickname} favorited something']},
 158       {:published, h.(inserted_at)},
 159       {:updated, h.(updated_at)},
 160       {:"activity:object",
 161        [
 162          {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/note']},
 163          # For notes, federate the object id.
 164          {:id, h.(activity.data["object"])}
 165        ]},
 166       {:"ostatus:conversation", [ref: h.(activity.data["context"])],
 167        h.(activity.data["context"])},
 168       {:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []},
 169       {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []},
 170       {:"thr:in-reply-to", [ref: to_charlist(activity.data["object"])], []}
 171     ] ++ author ++ mentions
 172   end
 173
 174   def to_simple_form(%{data: %{"type" => "Announce"}} = activity, user, with_author) do
 175     h = fn str -> [to_charlist(str)] end
 176
 177     updated_at = activity.data["published"]
 178     inserted_at = activity.data["published"]
 179
 180     _in_reply_to = get_in_reply_to(activity.data)
 181     author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
 182
 183     retweeted_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"])
 184     retweeted_user = User.get_cached_by_ap_id(retweeted_activity.data["actor"])
 185
 186     retweeted_xml = to_simple_form(retweeted_activity, retweeted_user, true)
 187
 188     mentions = activity.recipients |> get_mentions
 189
 190     [
 191       {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
 192       {:"activity:verb", ['http://activitystrea.ms/schema/1.0/share']},
 193       {:id, h.(activity.data["id"])},
 194       {:title, ['#{user.nickname} repeated a notice']},
 195       {:content, [type: 'html'], ['RT #{retweeted_activity.data["object"]["content"]}']},
 196       {:published, h.(inserted_at)},
 197       {:updated, h.(updated_at)},
 198       {:"ostatus:conversation", [ref: h.(activity.data["context"])],
 199        h.(activity.data["context"])},
 200       {:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []},
 201       {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []},
 202       {:"activity:object", retweeted_xml}
 203     ] ++ mentions ++ author
 204   end
 205
 206   def to_simple_form(%{data: %{"type" => "Follow"}} = activity, user, with_author) do
 207     h = fn str -> [to_charlist(str)] end
 208
 209     updated_at = activity.data["published"]
 210     inserted_at = activity.data["published"]
 211
 212     author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
 213
 214     mentions = (activity.recipients || []) |> get_mentions
 215
 216     [
 217       {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
 218       {:"activity:verb", ['http://activitystrea.ms/schema/1.0/follow']},
 219       {:id, h.(activity.data["id"])},
 220       {:title, ['#{user.nickname} started following #{activity.data["object"]}']},
 221       {:content, [type: 'html'],
 222        ['#{user.nickname} started following #{activity.data["object"]}']},
 223       {:published, h.(inserted_at)},
 224       {:updated, h.(updated_at)},
 225       {:"activity:object",
 226        [
 227          {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/person']},
 228          {:id, h.(activity.data["object"])},
 229          {:uri, h.(activity.data["object"])}
 230        ]},
 231       {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []}
 232     ] ++ mentions ++ author
 233   end
 234
 235   # Only undos of follow for now. Will need to get redone once there are more
 236   def to_simple_form(%{data: %{"type" => "Undo"}} = activity, user, with_author) do
 237     h = fn str -> [to_charlist(str)] end
 238
 239     updated_at = activity.data["published"]
 240     inserted_at = activity.data["published"]
 241
 242     author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
 243
 244     follow_activity =
 245       if is_map(activity.data["object"]) do
 246         Activity.get_by_ap_id(activity.data["object"]["id"])
 247       else
 248         Activity.get_by_ap_id(activity.data["object"])
 249       end
 250
 251     mentions = (activity.recipients || []) |> get_mentions
 252
 253     case follow_activity.data["type"] do
 254       "Follow" ->
 255         [
 256           {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
 257           {:"activity:verb", ['http://activitystrea.ms/schema/1.0/unfollow']},
 258           {:id, h.(activity.data["id"])},
 259           {:title, ['#{user.nickname} stopped following #{follow_activity.data["object"]}']},
 260           {:content, [type: 'html'],
 261            ['#{user.nickname} stopped following #{follow_activity.data["object"]}']},
 262           {:published, h.(inserted_at)},
 263           {:updated, h.(updated_at)},
 264           {:"activity:object",
 265            [
 266              {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/person']},
 267              {:id, h.(follow_activity.data["object"])},
 268              {:uri, h.(follow_activity.data["object"])}
 269            ]},
 270           {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])],
 271            []}
 272         ] ++ mentions ++ author
 273
 274       _ ->
 275         nil
 276     end
 277   end
 278
 279   def to_simple_form(%{data: %{"type" => "Delete"}} = activity, user, with_author) do
 280     h = fn str -> [to_charlist(str)] end
 281
 282     updated_at = activity.data["published"]
 283     inserted_at = activity.data["published"]
 284
 285     author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
 286
 287     [
 288       {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
 289       {:"activity:verb", ['http://activitystrea.ms/schema/1.0/delete']},
 290       {:id, h.(activity.data["object"])},
 291       {:title, ['An object was deleted']},
 292       {:content, [type: 'html'], ['An object was deleted']},
 293       {:published, h.(inserted_at)},
 294       {:updated, h.(updated_at)}
 295     ] ++ author
 296   end
 297
 298   def to_simple_form(_, _, _), do: nil
 299
 300   def wrap_with_entry(simple_form) do
 301     [
 302       {
 303         :entry,
 304         [
 305           xmlns: 'http://www.w3.org/2005/Atom',
 306           "xmlns:thr": 'http://purl.org/syndication/thread/1.0',
 307           "xmlns:activity": 'http://activitystrea.ms/spec/1.0/',
 308           "xmlns:poco": 'http://portablecontacts.net/spec/1.0',
 309           "xmlns:ostatus": 'http://ostatus.org/schema/1.0'
 310         ],
 311         simple_form
 312       }
 313     ]
 314   end
 315 end