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