+ def follow(%User{} = follower, %{ "screen_name" => followed_name }) do
+ with %User{} = followed <- Repo.get_by(User, nickname: followed_name),
+ { :ok, follower } <- User.follow(follower, followed),
+ { :ok, activity } <- ActivityPub.insert(%{
+ "type" => "Follow",
+ "actor" => follower.ap_id,
+ "object" => followed.ap_id,
+ "published" => make_date()
+ })
+ do
+ { :ok, follower, followed, activity }
+ end
+ end
+
+ def unfollow(%User{} = follower, followed_id) do
+ with %User{} = followed <- Repo.get(User, followed_id),
+ { :ok, follower } <- User.unfollow(follower, followed)
+ do
+ { :ok, follower, followed }
+ end
+ end
+
+ def upload(%Plug.Upload{} = file) do
+ {:ok, object} = ActivityPub.upload(file)
+
+ url = List.first(object.data["url"])
+ href = url["href"]
+ type = url["mediaType"]
+
+ # Fake this as good as possible...
+ """
+ <?xml version="1.0" encoding="UTF-8"?>
+ <rsp stat="ok" xmlns:atom="http://www.w3.org/2005/Atom">
+ <mediaid>#{object.id}</mediaid>
+ <media_id>#{object.id}</media_id>
+ <media_id_string>#{object.id}</media_id_string>
+ <media_url>#{href}</media_url>
+ <mediaurl>#{href}</mediaurl>
+ <atom:link rel="enclosure" href="#{href}" type="#{type}"></atom:link>
+ </rsp>
+ """
+ end
+
+ def parse_mentions(text) do
+ # Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
+ 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])?)*/
+
+ Regex.scan(regex, text)
+ |> List.flatten
+ |> Enum.uniq
+ |> Enum.map(fn ("@" <> match = full_match) -> {full_match, Repo.get_by(User, nickname: match)} end)
+ |> Enum.filter(fn ({_match, user}) -> user end)
+ end
+
+ def add_user_links(text, mentions) do
+ Enum.reduce(mentions, text, fn ({match, %User{ap_id: ap_id}}, text) -> String.replace(text, match, "<a href='#{ap_id}'>#{match}</a>") end)
+ end
+
+ defp add_conversation_id(activity) do
+ if is_integer(activity.data["statusnetConversationId"]) do
+ {:ok, activity}
+ else
+ data = activity.data
+ |> put_in(["object", "statusnetConversationId"], activity.id)
+ |> put_in(["statusnetConversationId"], activity.id)
+
+ changeset = Ecto.Changeset.change(activity, data: data)
+ Repo.update(changeset)
+ end
+ end
+
+ defp activities_to_statuses(activities, opts) do