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