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, UserRepresenter}
   5
   6   import Ecto.Query
   7
   8   def to_for_user_and_mentions(user, mentions) do
   9     default_to = [
  10       User.ap_followers(user),
  11       "https://www.w3.org/ns/activitystreams#Public"
  12     ]
  13
  14     default_to ++ Enum.map(mentions, fn ({_, %{ap_id: ap_id}}) -> ap_id end)
  15   end
  16
  17   def format_input(text, mentions) do
  18     HtmlSanitizeEx.strip_tags(text)
  19     |> String.replace("\n", "<br>")
  20     |> add_user_links(mentions)
  21   end
  22
  23   def attachments_from_ids(ids) do
  24     Enum.map(ids || [], fn (media_id) ->
  25       Repo.get(Object, media_id).data
  26     end)
  27   end
  28
  29   def get_replied_to_activity(id) when not is_nil(id) do
  30     Repo.get(Activity, id)
  31   end
  32
  33   def get_replied_to_activity(_), do: nil
  34
  35   def create_status(user = %User{}, data = %{"status" => status}) do
  36     attachments = attachments_from_ids(data["media_ids"])
  37     context = ActivityPub.generate_context_id
  38     mentions = parse_mentions(status)
  39     content_html = format_input(status, mentions)
  40     to = to_for_user_and_mentions(user, mentions)
  41     date = make_date()
  42
  43     inReplyTo = get_replied_to_activity(data["in_reply_to_status_id"])
  44
  45     # Wire up reply info.
  46     [to, context, object, additional] =
  47       if inReplyTo do
  48       context = inReplyTo.data["context"]
  49       to = to ++ [inReplyTo.data["actor"]]
  50
  51       object = %{
  52         "type" => "Note",
  53         "to" => to,
  54         "content" => content_html,
  55         "published" => date,
  56         "context" => context,
  57         "attachment" => attachments,
  58         "actor" => user.ap_id,
  59         "inReplyTo" => inReplyTo.data["object"]["id"],
  60         "inReplyToStatusId" => inReplyTo.id,
  61       }
  62       additional = %{}
  63
  64       [to, context, object, additional]
  65       else
  66       object = %{
  67         "type" => "Note",
  68         "to" => to,
  69         "content" => content_html,
  70         "published" => date,
  71         "context" => context,
  72         "attachment" => attachments,
  73         "actor" => user.ap_id
  74       }
  75       [to, context, object, %{}]
  76     end
  77
  78     ActivityPub.create(to, user, context, object, additional, data)
  79   end
  80
  81   def fetch_friend_statuses(user, opts \\ %{}) do
  82     ActivityPub.fetch_activities([user.ap_id | user.following], opts)
  83     |> activities_to_statuses(%{for: user})
  84   end
  85
  86   def fetch_public_statuses(user, opts \\ %{}) do
  87     opts = Map.put(opts, "local_only", true)
  88     ActivityPub.fetch_public_activities(opts)
  89     |> activities_to_statuses(%{for: user})
  90   end
  91
  92   def fetch_public_and_external_statuses(user, opts \\ %{}) do
  93     ActivityPub.fetch_public_activities(opts)
  94     |> activities_to_statuses(%{for: user})
  95   end
  96
  97   def fetch_user_statuses(user, opts \\ %{}) do
  98     ActivityPub.fetch_activities([], opts)
  99     |> activities_to_statuses(%{for: user})
 100   end
 101
 102   def fetch_mentions(user, opts \\ %{}) do
 103     ActivityPub.fetch_activities([user.ap_id], opts)
 104     |> activities_to_statuses(%{for: user})
 105   end
 106
 107   def fetch_conversation(user, id) do
 108     with context when is_binary(context) <- conversation_id_to_context(id),
 109          activities <- ActivityPub.fetch_activities_for_context(context),
 110          statuses <- activities |> activities_to_statuses(%{for: user})
 111     do
 112       statuses
 113     else e ->
 114       IO.inspect(e)
 115       []
 116     end
 117   end
 118
 119   def fetch_status(user, id) do
 120     with %Activity{} = activity <- Repo.get(Activity, id) do
 121       activity_to_status(activity, %{for: user})
 122     end
 123   end
 124
 125   def follow(%User{} = follower, params) do
 126     with { :ok, %User{} = followed } <- get_user(params),
 127          { :ok, follower } <- User.follow(follower, followed),
 128          { :ok, activity } <- ActivityPub.insert(%{
 129            "type" => "Follow",
 130            "actor" => follower.ap_id,
 131            "object" => followed.ap_id,
 132            "published" => make_date()
 133          })
 134     do
 135       { :ok, follower, followed, activity }
 136     else
 137       err -> err
 138     end
 139   end
 140
 141   def unfollow(%User{} = follower, params) do
 142     with { :ok, %User{} = unfollowed } <- get_user(params),
 143          { :ok, follower } <- User.unfollow(follower, unfollowed)
 144     do
 145       { :ok, follower, unfollowed}
 146     else
 147       err -> err
 148     end
 149   end
 150
 151   def favorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 152     object = Object.get_by_ap_id(object["id"])
 153
 154     {:ok, _like_activity, object} = ActivityPub.like(user, object)
 155     new_data = activity.data
 156     |> Map.put("object", object.data)
 157
 158     status = %{activity | data: new_data}
 159     |> activity_to_status(%{for: user})
 160
 161     {:ok, status}
 162   end
 163
 164   def unfavorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 165     object = Object.get_by_ap_id(object["id"])
 166
 167     {:ok, object} = ActivityPub.unlike(user, object)
 168     new_data = activity.data
 169     |> Map.put("object", object.data)
 170
 171     status = %{activity | data: new_data}
 172     |> activity_to_status(%{for: user})
 173
 174     {:ok, status}
 175   end
 176
 177   def retweet(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 178     object = Object.get_by_ap_id(object["id"])
 179
 180     {:ok, _announce_activity, object} = ActivityPub.announce(user, object)
 181     new_data = activity.data
 182     |> Map.put("object", object.data)
 183
 184     status = %{activity | data: new_data}
 185     |> activity_to_status(%{for: user})
 186
 187     {:ok, status}
 188   end
 189
 190   def upload(%Plug.Upload{} = file, format \\ "xml") do
 191     {:ok, object} = ActivityPub.upload(file)
 192
 193     url = List.first(object.data["url"])
 194     href = url["href"]
 195     type = url["mediaType"]
 196
 197     case format do
 198       "xml" ->
 199         # Fake this as good as possible...
 200         """
 201         <?xml version="1.0" encoding="UTF-8"?>
 202         <rsp stat="ok" xmlns:atom="http://www.w3.org/2005/Atom">
 203         <mediaid>#{object.id}</mediaid>
 204         <media_id>#{object.id}</media_id>
 205         <media_id_string>#{object.id}</media_id_string>
 206         <media_url>#{href}</media_url>
 207         <mediaurl>#{href}</mediaurl>
 208         <atom:link rel="enclosure" href="#{href}" type="#{type}"></atom:link>
 209         </rsp>
 210         """
 211       "json" ->
 212         %{
 213           media_id: object.id,
 214           media_id_string: "#{object.id}}",
 215           media_url: href,
 216           size: 0
 217         } |> Poison.encode!
 218     end
 219   end
 220
 221   def parse_mentions(text) do
 222     # Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
 223     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])?)*/
 224
 225     Regex.scan(regex, text)
 226     |> List.flatten
 227     |> Enum.uniq
 228     |> Enum.map(fn ("@" <> match = full_match) -> {full_match, User.get_cached_by_nickname(match)} end)
 229     |> Enum.filter(fn ({_match, user}) -> user end)
 230   end
 231
 232   def add_user_links(text, mentions) do
 233     Enum.reduce(mentions, text, fn ({match, %User{ap_id: ap_id}}, text) -> String.replace(text, match, "<a href='#{ap_id}'>#{match}</a>") end)
 234   end
 235
 236   def register_user(params) do
 237     params = %{
 238       nickname: params["nickname"],
 239       name: params["fullname"],
 240       bio: params["bio"],
 241       email: params["email"],
 242       password: params["password"],
 243       password_confirmation: params["confirm"]
 244     }
 245
 246     changeset = User.register_changeset(%User{}, params)
 247
 248     with {:ok, user} <- Repo.insert(changeset) do
 249       {:ok, UserRepresenter.to_map(user)}
 250     else
 251       {:error, changeset} ->
 252         errors = Ecto.Changeset.traverse_errors(changeset, fn {msg, _opts} -> msg end)
 253       |> Poison.encode!
 254       {:error, %{error: errors}}
 255     end
 256   end
 257
 258   def get_user(user \\ nil, params) do
 259     case params do
 260       %{ "user_id" => user_id } ->
 261         case target = Repo.get(User, user_id) do
 262           nil ->
 263             {:error, "No user with such user_id"}
 264           _ ->
 265             {:ok, target}
 266         end
 267       %{ "screen_name" => nickname } ->
 268         case target = Repo.get_by(User, nickname: nickname) do
 269           nil ->
 270             {:error, "No user with such screen_name"}
 271           _ ->
 272             {:ok, target}
 273         end
 274       _ ->
 275         if user do
 276           {:ok, user}
 277         else
 278           {:error, "You need to specify screen_name or user_id"}
 279         end
 280     end
 281   end
 282
 283   defp activities_to_statuses(activities, opts) do
 284     Enum.map(activities, fn(activity) ->
 285       activity_to_status(activity, opts)
 286     end)
 287   end
 288
 289   # For likes, fetch the liked activity, too.
 290   defp activity_to_status(%Activity{data: %{"type" => "Like"}} = activity, opts) do
 291     actor = get_in(activity.data, ["actor"])
 292     user = User.get_cached_by_ap_id(actor)
 293     [liked_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 294
 295     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, liked_activity: liked_activity}))
 296   end
 297
 298   # For announces, fetch the announced activity and the user.
 299   defp activity_to_status(%Activity{data: %{"type" => "Announce"}} = activity, opts) do
 300     actor = get_in(activity.data, ["actor"])
 301     user = User.get_cached_by_ap_id(actor)
 302     [announced_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 303     announced_actor = User.get_cached_by_ap_id(announced_activity.data["actor"])
 304
 305     ActivityRepresenter.to_map(activity, Map.merge(opts, %{users: [user, announced_actor], announced_activity: announced_activity}))
 306   end
 307
 308   defp activity_to_status(activity, opts) do
 309     actor = get_in(activity.data, ["actor"])
 310     user = User.get_cached_by_ap_id(actor)
 311     # mentioned_users = Repo.all(from user in User, where: user.ap_id in ^activity.data["to"])
 312     mentioned_users = Enum.map(activity.data["to"] || [], fn (ap_id) ->
 313       User.get_cached_by_ap_id(ap_id)
 314     end)
 315     |> Enum.filter(&(&1))
 316
 317     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, mentioned: mentioned_users}))
 318   end
 319
 320   defp make_date do
 321     DateTime.utc_now() |> DateTime.to_iso8601
 322   end
 323
 324   def context_to_conversation_id(context) do
 325     with %Object{id: id} <- Object.get_cached_by_ap_id(context) do
 326       id
 327     else _e ->
 328       changeset = Object.context_mapping(context)
 329       {:ok, %{id: id}} = Repo.insert(changeset)
 330       id
 331     end
 332   end
 333
 334   def conversation_id_to_context(id) do
 335     with %Object{data: %{"id" => context}} <- Repo.get(Object, id) do
 336       context
 337     else _e ->
 338       {:error, "No such conversation"}
 339     end
 340   end
 341 end