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