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