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     activity = %{
  29       "type" => "Create",
  30       "to" => to,
  31       "actor" => user.ap_id,
  32       "object" => %{
  33         "type" => "Note",
  34         "to" => to,
  35         "content" => content_html,
  36         "published" => make_date,
  37         "context" => context,
  38         "attachment" => attachments
  39       },
  40       "published" => make_date,
  41       "context" => context
  42     }
  43
  44     # Wire up reply info.
  45     activity = with inReplyToId when not is_nil(inReplyToId) <- data["in_reply_to_status_id"],
  46                     inReplyTo <- Repo.get(Activity, inReplyToId),
  47                     context <- inReplyTo.data["context"]
  48                do
  49
  50                to = activity["to"] ++ [inReplyTo.data["actor"]]
  51
  52                activity
  53                |> put_in(["to"], to)
  54                |> put_in(["context"], context)
  55                |> put_in(["object", "context"], context)
  56                |> put_in(["object", "inReplyTo"], inReplyTo.data["object"]["id"])
  57                |> put_in(["object", "inReplyToStatusId"], inReplyToId)
  58                |> put_in(["statusnetConversationId"], inReplyTo.data["statusnetConversationId"])
  59                |> put_in(["object", "statusnetConversationId"], inReplyTo.data["statusnetConversationId"])
  60                else _e ->
  61                  activity
  62                end
  63
  64     with {:ok, activity} <- ActivityPub.insert(activity) do
  65       add_conversation_id(activity)
  66     end
  67   end
  68
  69   def fetch_friend_statuses(user, opts \\ %{}) do
  70     ActivityPub.fetch_activities(user.following, opts)
  71     |> activities_to_statuses(%{for: user})
  72   end
  73
  74   def fetch_public_statuses(user, opts \\ %{}) do
  75     ActivityPub.fetch_public_activities(opts)
  76     |> activities_to_statuses(%{for: user})
  77   end
  78
  79   def fetch_conversation(user, id) do
  80     query = from activity in Activity,
  81       where: fragment("? @> ?", activity.data, ^%{ statusnetConversationId: id}),
  82       limit: 1
  83
  84     with %Activity{} = activity <- Repo.one(query),
  85          context <- activity.data["context"],
  86          activities <- ActivityPub.fetch_activities_for_context(context),
  87          statuses <- activities |> activities_to_statuses(%{for: user})
  88     do
  89       statuses
  90     else e ->
  91       IO.inspect(e)
  92       []
  93     end
  94   end
  95
  96   def fetch_status(user, id) do
  97     with %Activity{} = activity <- Repo.get(Activity, id) do
  98       activity_to_status(activity, %{for: user})
  99     end
 100   end
 101
 102   def follow(%User{} = follower, followed_id) do
 103     with %User{} = followed <- Repo.get(User, followed_id),
 104          { :ok, follower } <- User.follow(follower, followed),
 105          { :ok, activity } <- ActivityPub.insert(%{
 106            "type" => "Follow",
 107            "actor" => follower.ap_id,
 108            "object" => followed.ap_id,
 109            "published" => make_date
 110          })
 111     do
 112       { :ok, follower, followed, activity }
 113     end
 114   end
 115
 116   def unfollow(%User{} = follower, followed_id) do
 117     with %User{} = followed <- Repo.get(User, followed_id),
 118          { :ok, follower } <- User.unfollow(follower, followed)
 119     do
 120       { :ok, follower, followed }
 121     end
 122   end
 123
 124   def upload(%Plug.Upload{} = file) do
 125     {:ok, object} = ActivityPub.upload(file)
 126
 127     url = List.first(object.data["url"])
 128     href = url["href"]
 129     type = url["mediaType"]
 130
 131     # Fake this as good as possible...
 132     """
 133     <?xml version="1.0" encoding="UTF-8"?>
 134     <rsp stat="ok" xmlns:atom="http://www.w3.org/2005/Atom">
 135       <mediaid>#{object.id}</mediaid>
 136       <media_id>#{object.id}</media_id>
 137       <media_id_string>#{object.id}</media_id_string>
 138       <media_url>#{href}</media_url>
 139       <mediaurl>#{href}</mediaurl>
 140       <atom:link rel="enclosure" href="#{href}" type="#{type}"></atom:link>
 141     </rsp>
 142     """
 143   end
 144
 145   def parse_mentions(text) do
 146     # Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
 147     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])?)*/
 148
 149     Regex.scan(regex, text)
 150     |> List.flatten
 151     |> Enum.uniq
 152     |> Enum.map(fn ("@" <> match = full_match) -> {full_match, Repo.get_by(User, nickname: match)} end)
 153     |> Enum.filter(fn ({_match, user}) -> user end)
 154   end
 155
 156   def add_user_links(text, mentions) do
 157     Enum.reduce(mentions, text, fn ({match, %User{ap_id: ap_id}}, text) -> String.replace(text, match, "<a href='#{ap_id}'>#{match}</a>") end)
 158   end
 159
 160   defp add_conversation_id(activity) do
 161     if is_integer(activity.data["statusnetConversationId"]) do
 162       {:ok, activity}
 163     else
 164       data = activity.data
 165       |> put_in(["object", "statusnetConversationId"], activity.id)
 166       |> put_in(["statusnetConversationId"], activity.id)
 167
 168       changeset = Ecto.Changeset.change(activity, data: data)
 169       Repo.update(changeset)
 170     end
 171   end
 172
 173   defp activities_to_statuses(activities, opts) do
 174     Enum.map(activities, fn(activity) ->
 175       activity_to_status(activity, opts)
 176     end)
 177   end
 178
 179   defp activity_to_status(activity, opts) do
 180     actor = get_in(activity.data, ["actor"])
 181     user = Repo.get_by!(User, ap_id: actor)
 182     mentioned_users = Repo.all(from user in User, where: user.ap_id in ^activity.data["to"])
 183     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, mentioned: mentioned_users}))
 184   end
 185
 186   defp make_date do
 187     DateTime.utc_now() |> DateTime.to_iso8601
 188   end
 189 end