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

   1 defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
   2   alias Pleroma.{User, Activity, Repo, Object}
   3   alias Pleroma.Web.ActivityPub.ActivityPub
   4   alias Pleroma.Web.TwitterAPI.Representers.ActivityRepresenter
   5
   6   import Ecto.Query
   7
   8   def create_status(user = %User{}, data = %{}) do
   9     attachments = Enum.map(data["media_ids"] || [], fn (media_id) ->
  10       Repo.get(Object, media_id).data
  11     end)
  12
  13     context = ActivityPub.generate_context_id
  14
  15     content = HtmlSanitizeEx.strip_tags(data["status"])
  16
  17     mentions = parse_mentions(content)
  18
  19     default_to = [
  20       User.ap_followers(user),
  21       "https://www.w3.org/ns/activitystreams#Public"
  22     ]
  23
  24     to = default_to ++ Enum.map(mentions, fn ({_, %{ap_id: ap_id}}) -> ap_id end)
  25
  26     content_html = add_user_links(content, mentions)
  27
  28     date = make_date()
  29
  30     activity = %{
  31       "type" => "Create",
  32       "to" => to,
  33       "actor" => user.ap_id,
  34       "object" => %{
  35         "type" => "Note",
  36         "to" => to,
  37         "content" => content_html,
  38         "published" => date,
  39         "context" => context,
  40         "attachment" => attachments,
  41         "actor" => user.ap_id
  42       },
  43       "published" => date,
  44       "context" => context
  45     }
  46
  47     # Wire up reply info.
  48     activity = with inReplyToId when not is_nil(inReplyToId) <- data["in_reply_to_status_id"],
  49                     inReplyTo <- Repo.get(Activity, inReplyToId),
  50                     context <- inReplyTo.data["context"]
  51                do
  52
  53                to = activity["to"] ++ [inReplyTo.data["actor"]]
  54
  55                activity
  56                |> put_in(["to"], to)
  57                |> put_in(["context"], context)
  58                |> put_in(["object", "context"], context)
  59                |> put_in(["object", "inReplyTo"], inReplyTo.data["object"]["id"])
  60                |> put_in(["object", "inReplyToStatusId"], inReplyToId)
  61                |> put_in(["statusnetConversationId"], inReplyTo.data["statusnetConversationId"])
  62                |> put_in(["object", "statusnetConversationId"], inReplyTo.data["statusnetConversationId"])
  63                else _e ->
  64                  activity
  65                end
  66
  67     with {:ok, activity} <- ActivityPub.insert(activity) do
  68       add_conversation_id(activity)
  69     end
  70   end
  71
  72   def fetch_friend_statuses(user, opts \\ %{}) do
  73     ActivityPub.fetch_activities([user.ap_id | user.following], opts)
  74     |> activities_to_statuses(%{for: user})
  75   end
  76
  77   def fetch_public_statuses(user, opts \\ %{}) do
  78     ActivityPub.fetch_public_activities(opts)
  79     |> activities_to_statuses(%{for: user})
  80   end
  81
  82   def fetch_conversation(user, id) do
  83     query = from activity in Activity,
  84       where: fragment("? @> ?", activity.data, ^%{ statusnetConversationId: id}),
  85       limit: 1
  86
  87     with %Activity{} = activity <- Repo.one(query),
  88          context <- activity.data["context"],
  89          activities <- ActivityPub.fetch_activities_for_context(context),
  90          statuses <- activities |> activities_to_statuses(%{for: user})
  91     do
  92       statuses
  93     else e ->
  94       IO.inspect(e)
  95       []
  96     end
  97   end
  98
  99   def fetch_status(user, id) do
 100     with %Activity{} = activity <- Repo.get(Activity, id) do
 101       activity_to_status(activity, %{for: user})
 102     end
 103   end
 104
 105   def follow(%User{} = follower, followed_id) do
 106     with %User{} = followed <- Repo.get(User, followed_id),
 107          { :ok, follower } <- User.follow(follower, followed),
 108          { :ok, activity } <- ActivityPub.insert(%{
 109            "type" => "Follow",
 110            "actor" => follower.ap_id,
 111            "object" => followed.ap_id,
 112            "published" => make_date()
 113          })
 114     do
 115       { :ok, follower, followed, activity }
 116     end
 117   end
 118
 119   def unfollow(%User{} = follower, followed_id) do
 120     with %User{} = followed <- Repo.get(User, followed_id),
 121          { :ok, follower } <- User.unfollow(follower, followed)
 122     do
 123       { :ok, follower, followed }
 124     end
 125   end
 126
 127   def favorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 128     object = Object.get_by_ap_id(object["id"])
 129
 130     {:ok, _like_activity, object} = ActivityPub.like(user, object)
 131     new_data = activity.data
 132     |> Map.put("object", object.data)
 133
 134     status = %{activity | data: new_data}
 135     |> activity_to_status(%{for: user})
 136
 137     {:ok, status}
 138   end
 139
 140   def upload(%Plug.Upload{} = file) do
 141     {:ok, object} = ActivityPub.upload(file)
 142
 143     url = List.first(object.data["url"])
 144     href = url["href"]
 145     type = url["mediaType"]
 146
 147     # Fake this as good as possible...
 148     """
 149     <?xml version="1.0" encoding="UTF-8"?>
 150     <rsp stat="ok" xmlns:atom="http://www.w3.org/2005/Atom">
 151       <mediaid>#{object.id}</mediaid>
 152       <media_id>#{object.id}</media_id>
 153       <media_id_string>#{object.id}</media_id_string>
 154       <media_url>#{href}</media_url>
 155       <mediaurl>#{href}</mediaurl>
 156       <atom:link rel="enclosure" href="#{href}" type="#{type}"></atom:link>
 157     </rsp>
 158     """
 159   end
 160
 161   def parse_mentions(text) do
 162     # Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
 163     regex = ~r/@[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@?[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*/
 164
 165     Regex.scan(regex, text)
 166     |> List.flatten
 167     |> Enum.uniq
 168     |> Enum.map(fn ("@" <> match = full_match) -> {full_match, Repo.get_by(User, nickname: match)} end)
 169     |> Enum.filter(fn ({_match, user}) -> user end)
 170   end
 171
 172   def add_user_links(text, mentions) do
 173     Enum.reduce(mentions, text, fn ({match, %User{ap_id: ap_id}}, text) -> String.replace(text, match, "<a href='#{ap_id}'>#{match}</a>") end)
 174   end
 175
 176   defp add_conversation_id(activity) do
 177     if is_integer(activity.data["statusnetConversationId"]) do
 178       {:ok, activity}
 179     else
 180       data = activity.data
 181       |> put_in(["object", "statusnetConversationId"], activity.id)
 182       |> put_in(["statusnetConversationId"], activity.id)
 183
 184       changeset = Ecto.Changeset.change(activity, data: data)
 185       Repo.update(changeset)
 186     end
 187   end
 188
 189   defp activities_to_statuses(activities, opts) do
 190     Enum.map(activities, fn(activity) ->
 191       activity_to_status(activity, opts)
 192     end)
 193   end
 194
 195   # For likes, fetch the liked activity, too.
 196   defp activity_to_status(%Activity{data: %{"type" => "Like"}} = activity, opts) do
 197     actor = get_in(activity.data, ["actor"])
 198     user = Repo.get_by!(User, ap_id: actor)
 199     [liked_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 200
 201     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, liked_activity: liked_activity}))
 202   end
 203
 204   defp activity_to_status(activity, opts) do
 205     actor = get_in(activity.data, ["actor"])
 206     user = Repo.get_by!(User, ap_id: actor)
 207     mentioned_users = Repo.all(from user in User, where: user.ap_id in ^activity.data["to"])
 208     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, mentioned: mentioned_users}))
 209   end
 210
 211   defp make_date do
 212     DateTime.utc_now() |> DateTime.to_iso8601
 213   end
 214 end