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   alias Pleroma.Web.TwitterAPI.UserView
   6   alias Pleroma.Web.{OStatus, CommonAPI}
   7   import Ecto.Query
   8
   9   @httpoison Application.get_env(:pleroma, :httpoison)
  10
  11   def create_status(%User{} = user, %{"status" => _} = data) do
  12     CommonAPI.post(user, data)
  13   end
  14
  15   def fetch_friend_statuses(user, opts \\ %{}) do
  16     opts = opts
  17     |> Map.put("blocking_user", user)
  18     |> Map.put("user", user)
  19
  20     ActivityPub.fetch_activities([user.ap_id | user.following], opts)
  21     |> activities_to_statuses(%{for: user})
  22   end
  23
  24   def fetch_public_statuses(user, opts \\ %{}) do
  25     opts = Map.put(opts, "local_only", true)
  26     opts = Map.put(opts, "blocking_user", user)
  27     ActivityPub.fetch_public_activities(opts)
  28     |> activities_to_statuses(%{for: user})
  29   end
  30
  31   def fetch_public_and_external_statuses(user, opts \\ %{}) do
  32     opts = Map.put(opts, "blocking_user", user)
  33     ActivityPub.fetch_public_activities(opts)
  34     |> activities_to_statuses(%{for: user})
  35   end
  36
  37   def fetch_user_statuses(user, opts \\ %{}) do
  38     ActivityPub.fetch_activities([], opts)
  39     |> activities_to_statuses(%{for: user})
  40   end
  41
  42   def fetch_mentions(user, opts \\ %{}) do
  43     ActivityPub.fetch_activities([user.ap_id], opts)
  44     |> activities_to_statuses(%{for: user})
  45   end
  46
  47   def fetch_conversation(user, id) do
  48     with context when is_binary(context) <- conversation_id_to_context(id),
  49          activities <- ActivityPub.fetch_activities_for_context(context, %{"blocking_user" => user, "user" => user}),
  50          statuses <- activities |> activities_to_statuses(%{for: user})
  51     do
  52       statuses
  53     else _e ->
  54       []
  55     end
  56   end
  57
  58   def fetch_status(user, id) do
  59     with %Activity{} = activity <- Repo.get(Activity, id),
  60          true <- ActivityPub.visible_for_user?(activity, user) do
  61       activity_to_status(activity, %{for: user})
  62     end
  63   end
  64
  65   def follow(%User{} = follower, params) do
  66     with {:ok, %User{} = followed} <- get_user(params),
  67          {:ok, follower} <- User.follow(follower, followed),
  68          {:ok, activity} <- ActivityPub.follow(follower, followed)
  69     do
  70       {:ok, follower, followed, activity}
  71     else
  72       err -> err
  73     end
  74   end
  75
  76   def unfollow(%User{} = follower, params) do
  77     with { :ok, %User{} = unfollowed } <- get_user(params),
  78          { :ok, follower, follow_activity } <- User.unfollow(follower, unfollowed),
  79          { :ok, _activity } <- ActivityPub.insert(%{
  80            "type" => "Undo",
  81            "actor" => follower.ap_id,
  82            "object" => follow_activity.data["id"], # get latest Follow for these users
  83            "published" => make_date()
  84          })
  85     do
  86       { :ok, follower, unfollowed }
  87     else
  88       err -> err
  89     end
  90   end
  91
  92   def block(%User{} = blocker, params) do
  93     with {:ok, %User{} = blocked} <- get_user(params),
  94          {:ok, blocker} <- User.block(blocker, blocked)
  95     do
  96       {:ok, blocker, blocked}
  97     else
  98       err -> err
  99     end
 100   end
 101
 102   def unblock(%User{} = blocker, params) do
 103     with {:ok, %User{} = blocked} <- get_user(params),
 104          {:ok, blocker} <- User.unblock(blocker, blocked)
 105     do
 106       {:ok, blocker, blocked}
 107     else
 108       err -> err
 109     end
 110   end
 111
 112   def repeat(%User{} = user, ap_id_or_id) do
 113     with {:ok, _announce, %{data: %{"id" => id}}} = CommonAPI.repeat(ap_id_or_id, user),
 114          %Activity{} = activity <- Activity.get_create_activity_by_object_ap_id(id),
 115          status <- activity_to_status(activity, %{for: user}) do
 116       {:ok, status}
 117     end
 118   end
 119
 120   def fav(%User{} = user, ap_id_or_id) do
 121     with {:ok, _announce, %{data: %{"id" => id}}} = CommonAPI.favorite(ap_id_or_id, user),
 122          %Activity{} = activity <- Activity.get_create_activity_by_object_ap_id(id),
 123          status <- activity_to_status(activity, %{for: user}) do
 124       {:ok, status}
 125     end
 126   end
 127
 128   def unfav(%User{} = user, ap_id_or_id) do
 129     with {:ok, %{data: %{"id" => id}}} = CommonAPI.unfavorite(ap_id_or_id, user),
 130          %Activity{} = activity <- Activity.get_create_activity_by_object_ap_id(id),
 131          status <- activity_to_status(activity, %{for: user}) do
 132       {:ok, status}
 133     end
 134   end
 135
 136   def upload(%Plug.Upload{} = file, format \\ "xml") do
 137     {:ok, object} = ActivityPub.upload(file)
 138
 139     url = List.first(object.data["url"])
 140     href = url["href"]
 141     type = url["mediaType"]
 142
 143     case format do
 144       "xml" ->
 145         # Fake this as good as possible...
 146         """
 147         <?xml version="1.0" encoding="UTF-8"?>
 148         <rsp stat="ok" xmlns:atom="http://www.w3.org/2005/Atom">
 149         <mediaid>#{object.id}</mediaid>
 150         <media_id>#{object.id}</media_id>
 151         <media_id_string>#{object.id}</media_id_string>
 152         <media_url>#{href}</media_url>
 153         <mediaurl>#{href}</mediaurl>
 154         <atom:link rel="enclosure" href="#{href}" type="#{type}"></atom:link>
 155         </rsp>
 156         """
 157       "json" ->
 158         %{
 159           media_id: object.id,
 160           media_id_string: "#{object.id}}",
 161           media_url: href,
 162           size: 0
 163         } |> Poison.encode!
 164     end
 165   end
 166
 167   def register_user(params) do
 168     params = %{
 169       nickname: params["nickname"],
 170       name: params["fullname"],
 171       bio: params["bio"],
 172       email: params["email"],
 173       password: params["password"],
 174       password_confirmation: params["confirm"]
 175     }
 176
 177     changeset = User.register_changeset(%User{}, params)
 178
 179     with {:ok, user} <- Repo.insert(changeset) do
 180       {:ok, user}
 181     else
 182       {:error, changeset} ->
 183         errors = Ecto.Changeset.traverse_errors(changeset, fn {msg, _opts} -> msg end)
 184       |> Poison.encode!
 185       {:error, %{error: errors}}
 186     end
 187   end
 188
 189   def get_by_id_or_nickname(id_or_nickname) do
 190     if !is_integer(id_or_nickname) && :error == Integer.parse(id_or_nickname) do
 191       Repo.get_by(User, nickname: id_or_nickname)
 192     else
 193       Repo.get(User, id_or_nickname)
 194     end
 195   end
 196
 197   def get_user(user \\ nil, params) do
 198     case params do
 199       %{"user_id" => user_id} ->
 200         case target = get_by_id_or_nickname(user_id) do
 201           nil ->
 202             {:error, "No user with such user_id"}
 203           _ ->
 204             {:ok, target}
 205         end
 206       %{"screen_name" => nickname} ->
 207         case target = Repo.get_by(User, nickname: nickname) do
 208           nil ->
 209             {:error, "No user with such screen_name"}
 210           _ ->
 211             {:ok, target}
 212         end
 213       _ ->
 214         if user do
 215           {:ok, user}
 216         else
 217           {:error, "You need to specify screen_name or user_id"}
 218         end
 219     end
 220   end
 221
 222   defp parse_int(string, default)
 223   defp parse_int(string, default) when is_binary(string) do
 224     with {n, _} <- Integer.parse(string) do
 225       n
 226     else
 227       _e -> default
 228     end
 229   end
 230   defp parse_int(_, default), do: default
 231
 232   def search(user, %{"q" => query} = params) do
 233     limit = parse_int(params["rpp"], 20)
 234     page = parse_int(params["page"], 1)
 235     offset = (page - 1) * limit
 236
 237     q = from a in Activity,
 238       where: fragment("?->>'type' = 'Create'", a.data),
 239       where: fragment("to_tsvector('english', ?->'object'->>'content') @@ plainto_tsquery('english', ?)", a.data, ^query),
 240       limit: ^limit,
 241       offset: ^offset,
 242       order_by: [desc: :inserted_at] # this one isn't indexed so psql won't take the wrong index.
 243
 244     activities = Repo.all(q)
 245     activities_to_statuses(activities, %{for: user})
 246   end
 247
 248   defp activities_to_statuses(activities, opts) do
 249     Enum.map(activities, fn(activity) ->
 250       activity_to_status(activity, opts)
 251     end)
 252   end
 253
 254   # For likes, fetch the liked activity, too.
 255   defp activity_to_status(%Activity{data: %{"type" => "Like"}} = activity, opts) do
 256     actor = get_in(activity.data, ["actor"])
 257     user = User.get_cached_by_ap_id(actor)
 258     [liked_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 259
 260     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, liked_activity: liked_activity}))
 261   end
 262
 263   # For announces, fetch the announced activity and the user.
 264   defp activity_to_status(%Activity{data: %{"type" => "Announce"}} = activity, opts) do
 265     actor = get_in(activity.data, ["actor"])
 266     user = User.get_cached_by_ap_id(actor)
 267     [announced_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 268     announced_actor = User.get_cached_by_ap_id(announced_activity.data["actor"])
 269
 270     ActivityRepresenter.to_map(activity, Map.merge(opts, %{users: [user, announced_actor], announced_activity: announced_activity}))
 271   end
 272
 273   defp activity_to_status(%Activity{data: %{"type" => "Delete"}} = activity, opts) do
 274     actor = get_in(activity.data, ["actor"])
 275     user = User.get_cached_by_ap_id(actor)
 276     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user}))
 277   end
 278
 279   defp activity_to_status(activity, opts) do
 280     actor = get_in(activity.data, ["actor"])
 281     user = User.get_cached_by_ap_id(actor)
 282     # mentioned_users = Repo.all(from user in User, where: user.ap_id in ^activity.data["to"])
 283     mentioned_users = Enum.map(activity.data["to"] || [], fn (ap_id) ->
 284       if ap_id do
 285         User.get_cached_by_ap_id(ap_id)
 286       else
 287         nil
 288       end
 289     end)
 290     |> Enum.filter(&(&1))
 291
 292     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, mentioned: mentioned_users}))
 293   end
 294
 295   defp make_date do
 296     DateTime.utc_now() |> DateTime.to_iso8601
 297   end
 298
 299   def context_to_conversation_id(context) do
 300     with %Object{id: id} <- Object.get_cached_by_ap_id(context) do
 301       id
 302       else _e ->
 303         changeset = Object.context_mapping(context)
 304         case Repo.insert(changeset) do
 305           {:ok, %{id: id}} -> id
 306           # This should be solved by an upsert, but it seems ecto
 307           # has problems accessing the constraint inside the jsonb.
 308           {:error, _} -> Object.get_cached_by_ap_id(context).id
 309         end
 310     end
 311   end
 312
 313   def conversation_id_to_context(id) do
 314     with %Object{data: %{"id" => context}} <- Repo.get(Object, id) do
 315       context
 316     else _e ->
 317       {:error, "No such conversation"}
 318     end
 319   end
 320
 321   def get_external_profile(for_user, uri) do
 322     with {:ok, %User{} = user} <- OStatus.find_or_make_user(uri) do
 323       spawn(fn ->
 324         with url <- user.info["topic"],
 325              {:ok, %{body: body}} <- @httpoison.get(url, [], follow_redirect: true, timeout: 10000, recv_timeout: 20000) do
 326           OStatus.handle_incoming(body)
 327         end
 328       end)
 329       {:ok, UserView.render("show.json", %{user: user, for: for_user})}
 330     else _e ->
 331         {:error, "Couldn't find user"}
 332     end
 333   end
 334 end