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       {:ok, activity} = add_conversation_id(activity)
  70       Pleroma.Web.Websub.publish(Pleroma.Web.OStatus.feed_path(user), user, activity)
  71       {:ok, activity}
  72     end
  73   end
  74
  75   def fetch_friend_statuses(user, opts \\ %{}) do
  76     ActivityPub.fetch_activities([user.ap_id | user.following], opts)
  77     |> activities_to_statuses(%{for: user})
  78   end
  79
  80   def fetch_public_statuses(user, opts \\ %{}) do
  81     ActivityPub.fetch_public_activities(opts)
  82     |> activities_to_statuses(%{for: user})
  83   end
  84
  85   def fetch_user_statuses(user, opts \\ %{}) do
  86     ActivityPub.fetch_activities([], opts)
  87     |> activities_to_statuses(%{for: user})
  88   end
  89
  90   def fetch_mentions(user, opts \\ %{}) do
  91     ActivityPub.fetch_activities([user.ap_id], opts)
  92     |> activities_to_statuses(%{for: user})
  93   end
  94
  95   def fetch_conversation(user, id) do
  96     query = from activity in Activity,
  97       where: fragment("? @> ?", activity.data, ^%{ statusnetConversationId: id}),
  98       limit: 1
  99
 100     with %Activity{} = activity <- Repo.one(query),
 101          context <- activity.data["context"],
 102          activities <- ActivityPub.fetch_activities_for_context(context),
 103          statuses <- activities |> activities_to_statuses(%{for: user})
 104     do
 105       statuses
 106     else e ->
 107       IO.inspect(e)
 108       []
 109     end
 110   end
 111
 112   def fetch_status(user, id) do
 113     with %Activity{} = activity <- Repo.get(Activity, id) do
 114       activity_to_status(activity, %{for: user})
 115     end
 116   end
 117
 118   def follow(%User{} = follower, params) do
 119     with { :ok, %User{} = followed } <- get_user(params),
 120          { :ok, follower } <- User.follow(follower, followed),
 121          { :ok, activity } <- ActivityPub.insert(%{
 122            "type" => "Follow",
 123            "actor" => follower.ap_id,
 124            "object" => followed.ap_id,
 125            "published" => make_date()
 126          })
 127     do
 128       { :ok, follower, followed, activity }
 129     else
 130       err -> err
 131     end
 132   end
 133
 134 def unfollow(%User{} = follower, params) do
 135     with { :ok, %User{} = unfollowed } <- get_user(params),
 136          { :ok, follower, follow_activity } <- User.unfollow(follower, unfollowed),
 137          { :ok, _activity } <- ActivityPub.insert(%{
 138            "type" => "Undo",
 139            "actor" => follower.ap_id,
 140            "object" => follow_activity, # get latest Follow for these users
 141            "published" => make_date()
 142          })
 143     do
 144       { :ok, follower, unfollowed }
 145     else
 146       err -> err
 147     end
 148   end
 149
 150   def favorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 151     object = Object.get_by_ap_id(object["id"])
 152
 153     {:ok, _like_activity, object} = ActivityPub.like(user, object)
 154     new_data = activity.data
 155     |> Map.put("object", object.data)
 156
 157     status = %{activity | data: new_data}
 158     |> activity_to_status(%{for: user})
 159
 160     {:ok, status}
 161   end
 162
 163   def unfavorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 164     object = Object.get_by_ap_id(object["id"])
 165
 166     {:ok, object} = ActivityPub.unlike(user, object)
 167     new_data = activity.data
 168     |> Map.put("object", object.data)
 169
 170     status = %{activity | data: new_data}
 171     |> activity_to_status(%{for: user})
 172
 173     {:ok, status}
 174   end
 175
 176   def retweet(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 177     object = Object.get_by_ap_id(object["id"])
 178
 179     {:ok, _announce_activity, object} = ActivityPub.announce(user, object)
 180     new_data = activity.data
 181     |> Map.put("object", object.data)
 182
 183     status = %{activity | data: new_data}
 184     |> activity_to_status(%{for: user})
 185
 186     {:ok, status}
 187   end
 188
 189   def upload(%Plug.Upload{} = file, format \\ "xml") do
 190     {:ok, object} = ActivityPub.upload(file)
 191
 192     url = List.first(object.data["url"])
 193     href = url["href"]
 194     type = url["mediaType"]
 195
 196     case format do
 197       "xml" ->
 198         # Fake this as good as possible...
 199         """
 200         <?xml version="1.0" encoding="UTF-8"?>
 201         <rsp stat="ok" xmlns:atom="http://www.w3.org/2005/Atom">
 202         <mediaid>#{object.id}</mediaid>
 203         <media_id>#{object.id}</media_id>
 204         <media_id_string>#{object.id}</media_id_string>
 205         <media_url>#{href}</media_url>
 206         <mediaurl>#{href}</mediaurl>
 207         <atom:link rel="enclosure" href="#{href}" type="#{type}"></atom:link>
 208         </rsp>
 209         """
 210       "json" ->
 211         %{
 212           media_id: object.id,
 213           media_id_string: "#{object.id}}",
 214           media_url: href,
 215           size: 0
 216         } |> Poison.encode!
 217     end
 218   end
 219
 220   def parse_mentions(text) do
 221     # Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
 222     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])?)*/
 223
 224     Regex.scan(regex, text)
 225     |> List.flatten
 226     |> Enum.uniq
 227     |> Enum.map(fn ("@" <> match = full_match) -> {full_match, User.get_cached_by_nickname(match)} end)
 228     |> Enum.filter(fn ({_match, user}) -> user end)
 229   end
 230
 231   def add_user_links(text, mentions) do
 232     Enum.reduce(mentions, text, fn ({match, %User{ap_id: ap_id}}, text) -> String.replace(text, match, "<a href='#{ap_id}'>#{match}</a>") end)
 233   end
 234
 235   defp add_conversation_id(activity) do
 236     if is_integer(activity.data["statusnetConversationId"]) do
 237       {:ok, activity}
 238     else
 239       data = activity.data
 240       |> put_in(["object", "statusnetConversationId"], activity.id)
 241       |> put_in(["statusnetConversationId"], activity.id)
 242
 243       object = Object.get_by_ap_id(activity.data["object"]["id"])
 244
 245       changeset = Ecto.Changeset.change(object, data: data["object"])
 246       Repo.update(changeset)
 247
 248       changeset = Ecto.Changeset.change(activity, data: data)
 249       Repo.update(changeset)
 250     end
 251   end
 252
 253   def register_user(params) do
 254     params = %{
 255       nickname: params["nickname"],
 256       name: params["fullname"],
 257       bio: params["bio"],
 258       email: params["email"],
 259       password: params["password"],
 260       password_confirmation: params["confirm"]
 261     }
 262
 263     changeset = User.register_changeset(%User{}, params)
 264
 265     with {:ok, user} <- Repo.insert(changeset) do
 266       {:ok, UserRepresenter.to_map(user)}
 267     else
 268       {:error, changeset} ->
 269         errors = Ecto.Changeset.traverse_errors(changeset, fn {msg, _opts} -> msg end)
 270       |> Poison.encode!
 271         {:error, %{error: errors}}
 272     end
 273   end
 274
 275   def get_user(user \\ nil, params) do
 276     case params do
 277       %{ "user_id" => user_id } ->
 278         case target = Repo.get(User, user_id) do
 279           nil ->
 280             {:error, "No user with such user_id"}
 281           _ ->
 282             {:ok, target}
 283         end
 284       %{ "screen_name" => nickname } ->
 285         case target = Repo.get_by(User, nickname: nickname) do
 286           nil ->
 287             {:error, "No user with such screen_name"}
 288           _ ->
 289             {:ok, target}
 290         end
 291       _ ->
 292         if user do
 293           {:ok, user}
 294         else
 295           {:error, "You need to specify screen_name or user_id"}
 296         end
 297     end
 298   end
 299
 300   defp activities_to_statuses(activities, opts) do
 301     Enum.map(activities, fn(activity) ->
 302       activity_to_status(activity, opts)
 303     end)
 304   end
 305
 306   # For likes, fetch the liked activity, too.
 307   defp activity_to_status(%Activity{data: %{"type" => "Like"}} = activity, opts) do
 308     actor = get_in(activity.data, ["actor"])
 309     user = User.get_cached_by_ap_id(actor)
 310     [liked_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 311
 312     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, liked_activity: liked_activity}))
 313   end
 314
 315   # For announces, fetch the announced activity and the user.
 316   defp activity_to_status(%Activity{data: %{"type" => "Announce"}} = activity, opts) do
 317     actor = get_in(activity.data, ["actor"])
 318     user = User.get_cached_by_ap_id(actor)
 319     [announced_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 320     announced_actor = User.get_cached_by_ap_id(announced_activity.data["actor"])
 321
 322     ActivityRepresenter.to_map(activity, Map.merge(opts, %{users: [user, announced_actor], announced_activity: announced_activity}))
 323   end
 324
 325   defp activity_to_status(activity, opts) do
 326     actor = get_in(activity.data, ["actor"])
 327     user = User.get_cached_by_ap_id(actor)
 328     # mentioned_users = Repo.all(from user in User, where: user.ap_id in ^activity.data["to"])
 329     mentioned_users = Enum.map(activity.data["to"] || [], fn (ap_id) ->
 330       User.get_cached_by_ap_id(ap_id)
 331     end)
 332     |> Enum.filter(&(&1))
 333
 334     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, mentioned: mentioned_users}))
 335   end
 336
 337   defp make_date do
 338     DateTime.utc_now() |> DateTime.to_iso8601
 339   end
 340 end