Merge branch 'maintenance/copyright-2019' into 'develop'
[akkoma] / lib / pleroma / web / twitter_api / twitter_api_controller.ex
index 92c20f97a9fb42243d8519cb2bcd5a86c6fd8e8c..1e04b8c4bea52c72b6300d54079448cc4d5c62df 100644 (file)
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.TwitterAPI.Controller do
   use Pleroma.Web, :controller
-  alias Pleroma.Web.TwitterAPI.TwitterAPI
-  alias Pleroma.Web.TwitterAPI.Representers.{UserRepresenter, ActivityRepresenter}
-  alias Pleroma.{Repo, Activity}
+
+  import Pleroma.Web.ControllerHelper, only: [json_response: 3]
+
+  alias Pleroma.Web.TwitterAPI.{TwitterAPI, UserView, ActivityView, NotificationView}
+  alias Pleroma.Web.CommonAPI
+  alias Pleroma.{Repo, Activity, Object, User, Notification}
   alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.ActivityPub.Utils
+  alias Ecto.Changeset
+
+  require Logger
+
+  plug(:only_if_public_instance when action in [:public_timeline, :public_and_external_timeline])
+  action_fallback(:errors)
 
   def verify_credentials(%{assigns: %{user: user}} = conn, _params) do
-    response = user |> UserRepresenter.to_json(%{for: user})
+    token = Phoenix.Token.sign(conn, "user socket", user.id)
 
     conn
-    |> json_reply(200, response)
+    |> put_view(UserView)
+    |> render("show.json", %{user: user, token: token})
   end
 
-  def status_update(%{assigns: %{user: user}} = conn, status_data) do
-    media_ids = extract_media_ids(status_data)
-    {:ok, activity} = TwitterAPI.create_status(user, Map.put(status_data, "media_ids",  media_ids ))
-    conn
-    |> json_reply(200, ActivityRepresenter.to_json(activity, %{user: user}))
+  def status_update(%{assigns: %{user: user}} = conn, %{"status" => _} = status_data) do
+    with media_ids <- extract_media_ids(status_data),
+         {:ok, activity} <-
+           TwitterAPI.create_status(user, Map.put(status_data, "media_ids", media_ids)) do
+      conn
+      |> json(ActivityView.render("activity.json", activity: activity, for: user))
+    else
+      _ -> empty_status_reply(conn)
+    end
+  end
+
+  def status_update(conn, _status_data) do
+    empty_status_reply(conn)
+  end
+
+  defp empty_status_reply(conn) do
+    bad_request_reply(conn, "Client must provide a 'status' parameter with a value.")
   end
 
   defp extract_media_ids(status_data) do
     with media_ids when not is_nil(media_ids) <- status_data["media_ids"],
          split_ids <- String.split(media_ids, ","),
-         clean_ids <- Enum.reject(split_ids, fn (id) -> String.length(id) == 0 end)
-      do
-        clean_ids
-      else _e -> []
+         clean_ids <- Enum.reject(split_ids, fn id -> String.length(id) == 0 end) do
+      clean_ids
+    else
+      _e -> []
     end
   end
 
+  def public_and_external_timeline(%{assigns: %{user: user}} = conn, params) do
+    params =
+      params
+      |> Map.put("type", ["Create", "Announce"])
+      |> Map.put("blocking_user", user)
+
+    activities = ActivityPub.fetch_public_activities(params)
+
+    conn
+    |> put_view(ActivityView)
+    |> render("index.json", %{activities: activities, for: user})
+  end
+
   def public_timeline(%{assigns: %{user: user}} = conn, params) do
-    statuses = TwitterAPI.fetch_public_statuses(user, params)
-    {:ok, json} = Poison.encode(statuses)
+    params =
+      params
+      |> Map.put("type", ["Create", "Announce"])
+      |> Map.put("local_only", true)
+      |> Map.put("blocking_user", user)
+
+    activities = ActivityPub.fetch_public_activities(params)
 
     conn
-    |> json_reply(200, json)
+    |> put_view(ActivityView)
+    |> render("index.json", %{activities: activities, for: user})
   end
 
   def friends_timeline(%{assigns: %{user: user}} = conn, params) do
-    statuses = TwitterAPI.fetch_friend_statuses(user, params)
-    {:ok, json} = Poison.encode(statuses)
+    params =
+      params
+      |> Map.put("type", ["Create", "Announce", "Follow", "Like"])
+      |> Map.put("blocking_user", user)
+      |> Map.put("user", user)
+
+    activities =
+      ActivityPub.fetch_activities([user.ap_id | user.following], params)
+      |> ActivityPub.contain_timeline(user)
 
     conn
-    |> json_reply(200, json)
+    |> put_view(ActivityView)
+    |> render("index.json", %{activities: activities, for: user})
+  end
+
+  def show_user(conn, params) do
+    for_user = conn.assigns.user
+
+    with {:ok, shown} <- TwitterAPI.get_user(params),
+         true <-
+           User.auth_active?(shown) ||
+             (for_user && (for_user.id == shown.id || User.superuser?(for_user))) do
+      params =
+        if for_user do
+          %{user: shown, for: for_user}
+        else
+          %{user: shown}
+        end
+
+      conn
+      |> put_view(UserView)
+      |> render("show.json", params)
+    else
+      {:error, msg} ->
+        bad_request_reply(conn, msg)
+
+      false ->
+        conn
+        |> put_status(404)
+        |> json(%{error: "Unconfirmed user"})
+    end
   end
 
   def user_timeline(%{assigns: %{user: user}} = conn, params) do
     case TwitterAPI.get_user(user, params) do
       {:ok, target_user} ->
-        params = Map.merge(params, %{"actor_id" => target_user.ap_id})
-        statuses  = TwitterAPI.fetch_user_statuses(user, params)
+        # Twitter and ActivityPub use a different name and sense for this parameter.
+        {include_rts, params} = Map.pop(params, "include_rts")
+
+        params =
+          case include_rts do
+            x when x == "false" or x == "0" -> Map.put(params, "exclude_reblogs", "true")
+            _ -> params
+          end
+
+        activities = ActivityPub.fetch_user_activities(target_user, user, params)
+
         conn
-        |> json_reply(200, statuses |> Poison.encode!)
+        |> put_view(ActivityView)
+        |> render("index.json", %{activities: activities, for: user})
+
       {:error, msg} ->
         bad_request_reply(conn, msg)
     end
   end
 
+  def mentions_timeline(%{assigns: %{user: user}} = conn, params) do
+    params =
+      params
+      |> Map.put("type", ["Create", "Announce", "Follow", "Like"])
+      |> Map.put("blocking_user", user)
+
+    activities = ActivityPub.fetch_activities([user.ap_id], params)
+
+    conn
+    |> put_view(ActivityView)
+    |> render("index.json", %{activities: activities, for: user})
+  end
+
+  def dm_timeline(%{assigns: %{user: user}} = conn, params) do
+    query =
+      ActivityPub.fetch_activities_query(
+        [user.ap_id],
+        Map.merge(params, %{"type" => "Create", "user" => user, visibility: "direct"})
+      )
+
+    activities = Repo.all(query)
+
+    conn
+    |> put_view(ActivityView)
+    |> render("index.json", %{activities: activities, for: user})
+  end
+
+  def notifications(%{assigns: %{user: user}} = conn, params) do
+    notifications = Notification.for_user(user, params)
+
+    conn
+    |> put_view(NotificationView)
+    |> render("notification.json", %{notifications: notifications, for: user})
+  end
+
+  def notifications_read(%{assigns: %{user: user}} = conn, %{"latest_id" => latest_id} = params) do
+    Notification.set_read_up_to(user, latest_id)
+
+    notifications = Notification.for_user(user, params)
+
+    conn
+    |> put_view(NotificationView)
+    |> render("notification.json", %{notifications: notifications, for: user})
+  end
+
+  def notifications_read(%{assigns: %{user: _user}} = conn, _) do
+    bad_request_reply(conn, "You need to specify latest_id")
+  end
+
   def follow(%{assigns: %{user: user}} = conn, params) do
     case TwitterAPI.follow(user, params) do
-      { :ok, user, followed, _activity } ->
-        response = followed |> UserRepresenter.to_json(%{for: user})
+      {:ok, user, followed, _activity} ->
         conn
-        |> json_reply(200, response)
-      { :error, msg } -> forbidden_json_reply(conn, msg)
+        |> put_view(UserView)
+        |> render("show.json", %{user: followed, for: user})
+
+      {:error, msg} ->
+        forbidden_json_reply(conn, msg)
     end
   end
 
-  def unfollow(%{assigns: %{user: user}} = conn, %{ "user_id" => followed_id }) do
-    case TwitterAPI.unfollow(user, followed_id) do
-      { :ok, user, followed } ->
-        response = followed |> UserRepresenter.to_json(%{for: user})
+  def block(%{assigns: %{user: user}} = conn, params) do
+    case TwitterAPI.block(user, params) do
+      {:ok, user, blocked} ->
+        conn
+        |> put_view(UserView)
+        |> render("show.json", %{user: blocked, for: user})
+
+      {:error, msg} ->
+        forbidden_json_reply(conn, msg)
+    end
+  end
 
+  def unblock(%{assigns: %{user: user}} = conn, params) do
+    case TwitterAPI.unblock(user, params) do
+      {:ok, user, blocked} ->
         conn
-        |> json_reply(200, response)
-      { :error, msg } -> forbidden_json_reply(conn, msg)
+        |> put_view(UserView)
+        |> render("show.json", %{user: blocked, for: user})
+
+      {:error, msg} ->
+        forbidden_json_reply(conn, msg)
+    end
+  end
+
+  def delete_post(%{assigns: %{user: user}} = conn, %{"id" => id}) do
+    with {:ok, activity} <- TwitterAPI.delete(user, id) do
+      conn
+      |> put_view(ActivityView)
+      |> render("activity.json", %{activity: activity, for: user})
     end
   end
 
-  def fetch_status(%{assigns: %{user: user}} = conn, %{ "id" => id }) do
-    response = TwitterAPI.fetch_status(user, id) |> Poison.encode!
+  def unfollow(%{assigns: %{user: user}} = conn, params) do
+    case TwitterAPI.unfollow(user, params) do
+      {:ok, user, unfollowed} ->
+        conn
+        |> put_view(UserView)
+        |> render("show.json", %{user: unfollowed, for: user})
 
-    conn
-    |> json_reply(200, response)
+      {:error, msg} ->
+        forbidden_json_reply(conn, msg)
+    end
+  end
+
+  def fetch_status(%{assigns: %{user: user}} = conn, %{"id" => id}) do
+    with %Activity{} = activity <- Repo.get(Activity, id),
+         true <- ActivityPub.visible_for_user?(activity, user) do
+      conn
+      |> put_view(ActivityView)
+      |> render("activity.json", %{activity: activity, for: user})
+    end
   end
 
-  def fetch_conversation(%{assigns: %{user: user}} = conn, %{ "id" => id }) do
+  def fetch_conversation(%{assigns: %{user: user}} = conn, %{"id" => id}) do
     id = String.to_integer(id)
-    response = TwitterAPI.fetch_conversation(user, id) |> Poison.encode!
+
+    with context when is_binary(context) <- TwitterAPI.conversation_id_to_context(id),
+         activities <-
+           ActivityPub.fetch_activities_for_context(context, %{
+             "blocking_user" => user,
+             "user" => user
+           }) do
+      conn
+      |> put_view(ActivityView)
+      |> render("index.json", %{activities: activities, for: user})
+    end
+  end
+
+  @doc """
+  Updates metadata of uploaded media object.
+  Derived from [Twitter API endpoint](https://developer.twitter.com/en/docs/media/upload-media/api-reference/post-media-metadata-create).
+  """
+  def update_media(%{assigns: %{user: user}} = conn, %{"media_id" => id} = data) do
+    object = Repo.get(Object, id)
+    description = get_in(data, ["alt_text", "text"]) || data["name"] || data["description"]
+
+    {conn, status, response_body} =
+      cond do
+        !object ->
+          {halt(conn), :not_found, ""}
+
+        !Object.authorize_mutation(object, user) ->
+          {halt(conn), :forbidden, "You can only update your own uploads."}
+
+        !is_binary(description) ->
+          {conn, :not_modified, ""}
+
+        true ->
+          new_data = Map.put(object.data, "name", description)
+
+          {:ok, _} =
+            object
+            |> Object.change(%{data: new_data})
+            |> Repo.update()
+
+          {conn, :no_content, ""}
+      end
 
     conn
-    |> json_reply(200, response)
+    |> put_status(status)
+    |> json(response_body)
   end
 
-  def upload(conn, %{"media" => media}) do
-    response = TwitterAPI.upload(media)
+  def upload(%{assigns: %{user: user}} = conn, %{"media" => media}) do
+    response = TwitterAPI.upload(media, user)
+
     conn
     |> put_resp_content_type("application/atom+xml")
     |> send_resp(200, response)
   end
 
-  def help_test(conn, _params) do
-    conn |> json_reply(200, Poison.encode!("ok"))
-  end
+  def upload_json(%{assigns: %{user: user}} = conn, %{"media" => media}) do
+    response = TwitterAPI.upload(media, user, "json")
 
-  def upload_json(conn, %{"media" => media}) do
-    response = TwitterAPI.upload(media, "json")
     conn
     |> json_reply(200, response)
   end
 
-  def config(conn, _params) do
-    response = %{
-      site: %{
-        name: Pleroma.Web.base_url,
-        server: Pleroma.Web.base_url,
-        textlimit: -1
-      }
-    }
-    |> Poison.encode!
+  def get_by_id_or_ap_id(id) do
+    activity = Repo.get(Activity, id) || Activity.get_create_activity_by_object_ap_id(id)
 
-    conn
-    |> json_reply(200, response)
+    if activity.data["type"] == "Create" do
+      activity
+    else
+      Activity.get_create_activity_by_object_ap_id(activity.data["object"])
+    end
   end
 
   def favorite(%{assigns: %{user: user}} = conn, %{"id" => id}) do
-    activity = Repo.get(Activity, id)
-    {:ok, status} = TwitterAPI.favorite(user, activity)
-    response = Poison.encode!(status)
-
-    conn
-    |> json_reply(200, response)
+    with {_, {:ok, id}} <- {:param_cast, Ecto.Type.cast(:integer, id)},
+         {:ok, activity} <- TwitterAPI.fav(user, id) do
+      conn
+      |> put_view(ActivityView)
+      |> render("activity.json", %{activity: activity, for: user})
+    end
   end
 
   def unfavorite(%{assigns: %{user: user}} = conn, %{"id" => id}) do
-    activity = Repo.get(Activity, id)
-    {:ok, status} = TwitterAPI.unfavorite(user, activity)
-    response = Poison.encode!(status)
-
-    conn
-    |> json_reply(200, response)
+    with {_, {:ok, id}} <- {:param_cast, Ecto.Type.cast(:integer, id)},
+         {:ok, activity} <- TwitterAPI.unfav(user, id) do
+      conn
+      |> put_view(ActivityView)
+      |> render("activity.json", %{activity: activity, for: user})
+    end
   end
 
   def retweet(%{assigns: %{user: user}} = conn, %{"id" => id}) do
-    activity = Repo.get(Activity, id)
-    {:ok, status} = TwitterAPI.retweet(user, activity)
-    response = Poison.encode!(status)
+    with {_, {:ok, id}} <- {:param_cast, Ecto.Type.cast(:integer, id)},
+         {:ok, activity} <- TwitterAPI.repeat(user, id) do
+      conn
+      |> put_view(ActivityView)
+      |> render("activity.json", %{activity: activity, for: user})
+    end
+  end
 
-    conn
-    |> json_reply(200, response)
+  def unretweet(%{assigns: %{user: user}} = conn, %{"id" => id}) do
+    with {_, {:ok, id}} <- {:param_cast, Ecto.Type.cast(:integer, id)},
+         {:ok, activity} <- TwitterAPI.unrepeat(user, id) do
+      conn
+      |> put_view(ActivityView)
+      |> render("activity.json", %{activity: activity, for: user})
+    end
   end
 
   def register(conn, params) do
     with {:ok, user} <- TwitterAPI.register_user(params) do
       conn
-      |> json_reply(200, Poison.encode!(user))
+      |> put_view(UserView)
+      |> render("show.json", %{user: user})
     else
       {:error, errors} ->
+        conn
+        |> json_reply(400, Jason.encode!(errors))
+    end
+  end
+
+  def password_reset(conn, params) do
+    nickname_or_email = params["email"] || params["nickname"]
+
+    with {:ok, _} <- TwitterAPI.password_reset(nickname_or_email) do
+      json_response(conn, :no_content, "")
+    end
+  end
+
+  def confirm_email(conn, %{"user_id" => uid, "token" => token}) do
+    with %User{} = user <- Repo.get(User, uid),
+         true <- user.local,
+         true <- user.info.confirmation_pending,
+         true <- user.info.confirmation_token == token,
+         info_change <- User.Info.confirmation_changeset(user.info, :confirmed),
+         changeset <- Changeset.change(user) |> Changeset.put_embed(:info, info_change),
+         {:ok, _} <- User.update_and_set_cache(changeset) do
+      conn
+      |> redirect(to: "/")
+    end
+  end
+
+  def resend_confirmation_email(conn, params) do
+    nickname_or_email = params["email"] || params["nickname"]
+
+    with %User{} = user <- User.get_by_nickname_or_email(nickname_or_email),
+         {:ok, _} <- User.try_send_confirmation_email(user) do
       conn
-      |> json_reply(400, Poison.encode!(errors))
+      |> json_response(:no_content, "")
     end
   end
 
   def update_avatar(%{assigns: %{user: user}} = conn, params) do
-    {:ok, object} = ActivityPub.upload(params)
-    change = Ecto.Changeset.change(user, %{avatar: object.data})
-    {:ok, user} = Repo.update(change)
+    {:ok, object} = ActivityPub.upload(params, type: :avatar)
+    change = Changeset.change(user, %{avatar: object.data})
+    {:ok, user} = User.update_and_set_cache(change)
+    CommonAPI.update(user)
+
+    conn
+    |> put_view(UserView)
+    |> render("show.json", %{user: user, for: user})
+  end
+
+  def update_banner(%{assigns: %{user: user}} = conn, params) do
+    with {:ok, object} <- ActivityPub.upload(%{"img" => params["banner"]}, type: :banner),
+         new_info <- %{"banner" => object.data},
+         info_cng <- User.Info.profile_update(user.info, new_info),
+         changeset <- Ecto.Changeset.change(user) |> Ecto.Changeset.put_embed(:info, info_cng),
+         {:ok, user} <- User.update_and_set_cache(changeset) do
+      CommonAPI.update(user)
+      %{"url" => [%{"href" => href} | _]} = object.data
+      response = %{url: href} |> Jason.encode!()
+
+      conn
+      |> json_reply(200, response)
+    end
+  end
+
+  def update_background(%{assigns: %{user: user}} = conn, params) do
+    with {:ok, object} <- ActivityPub.upload(params, type: :background),
+         new_info <- %{"background" => object.data},
+         info_cng <- User.Info.profile_update(user.info, new_info),
+         changeset <- Ecto.Changeset.change(user) |> Ecto.Changeset.put_embed(:info, info_cng),
+         {:ok, _user} <- User.update_and_set_cache(changeset) do
+      %{"url" => [%{"href" => href} | _]} = object.data
+      response = %{url: href} |> Jason.encode!()
+
+      conn
+      |> json_reply(200, response)
+    end
+  end
+
+  def external_profile(%{assigns: %{user: current_user}} = conn, %{"profileurl" => uri}) do
+    with {:ok, user_map} <- TwitterAPI.get_external_profile(current_user, uri),
+         response <- Jason.encode!(user_map) do
+      conn
+      |> json_reply(200, response)
+    else
+      _e ->
+        conn
+        |> put_status(404)
+        |> json(%{error: "Can't find user"})
+    end
+  end
+
+  def followers(%{assigns: %{user: for_user}} = conn, params) do
+    with {:ok, user} <- TwitterAPI.get_user(for_user, params),
+         {:ok, followers} <- User.get_followers(user) do
+      followers =
+        cond do
+          for_user && user.id == for_user.id -> followers
+          user.info.hide_network -> []
+          true -> followers
+        end
+
+      conn
+      |> put_view(UserView)
+      |> render("index.json", %{users: followers, for: conn.assigns[:user]})
+    else
+      _e -> bad_request_reply(conn, "Can't get followers")
+    end
+  end
+
+  def friends(%{assigns: %{user: for_user}} = conn, params) do
+    with {:ok, user} <- TwitterAPI.get_user(conn.assigns[:user], params),
+         {:ok, friends} <- User.get_friends(user) do
+      friends =
+        cond do
+          for_user && user.id == for_user.id -> friends
+          user.info.hide_network -> []
+          true -> friends
+        end
+
+      conn
+      |> put_view(UserView)
+      |> render("index.json", %{users: friends, for: conn.assigns[:user]})
+    else
+      _e -> bad_request_reply(conn, "Can't get friends")
+    end
+  end
+
+  def blocks(%{assigns: %{user: user}} = conn, _params) do
+    with blocked_users <- User.blocked_users(user) do
+      conn
+      |> put_view(UserView)
+      |> render("index.json", %{users: blocked_users, for: user})
+    end
+  end
+
+  def friend_requests(conn, params) do
+    with {:ok, user} <- TwitterAPI.get_user(conn.assigns[:user], params),
+         {:ok, friend_requests} <- User.get_follow_requests(user) do
+      conn
+      |> put_view(UserView)
+      |> render("index.json", %{users: friend_requests, for: conn.assigns[:user]})
+    else
+      _e -> bad_request_reply(conn, "Can't get friend requests")
+    end
+  end
+
+  def approve_friend_request(conn, %{"user_id" => uid} = _params) do
+    with followed <- conn.assigns[:user],
+         uid when is_number(uid) <- String.to_integer(uid),
+         %User{} = follower <- Repo.get(User, uid),
+         {:ok, follower} <- User.maybe_follow(follower, followed),
+         %Activity{} = follow_activity <- Utils.fetch_latest_follow(follower, followed),
+         {:ok, follow_activity} <- Utils.update_follow_state(follow_activity, "accept"),
+         {:ok, _activity} <-
+           ActivityPub.accept(%{
+             to: [follower.ap_id],
+             actor: followed.ap_id,
+             object: follow_activity.data["id"],
+             type: "Accept"
+           }) do
+      conn
+      |> put_view(UserView)
+      |> render("show.json", %{user: follower, for: followed})
+    else
+      e -> bad_request_reply(conn, "Can't approve user: #{inspect(e)}")
+    end
+  end
+
+  def deny_friend_request(conn, %{"user_id" => uid} = _params) do
+    with followed <- conn.assigns[:user],
+         uid when is_number(uid) <- String.to_integer(uid),
+         %User{} = follower <- Repo.get(User, uid),
+         %Activity{} = follow_activity <- Utils.fetch_latest_follow(follower, followed),
+         {:ok, follow_activity} <- Utils.update_follow_state(follow_activity, "reject"),
+         {:ok, _activity} <-
+           ActivityPub.reject(%{
+             to: [follower.ap_id],
+             actor: followed.ap_id,
+             object: follow_activity.data["id"],
+             type: "Reject"
+           }) do
+      conn
+      |> put_view(UserView)
+      |> render("show.json", %{user: follower, for: followed})
+    else
+      e -> bad_request_reply(conn, "Can't deny user: #{inspect(e)}")
+    end
+  end
+
+  def friends_ids(%{assigns: %{user: user}} = conn, _params) do
+    with {:ok, friends} <- User.get_friends(user) do
+      ids =
+        friends
+        |> Enum.map(fn x -> x.id end)
+        |> Jason.encode!()
+
+      json(conn, ids)
+    else
+      _e -> bad_request_reply(conn, "Can't get friends")
+    end
+  end
+
+  def empty_array(conn, _params) do
+    json(conn, Jason.encode!([]))
+  end
+
+  def raw_empty_array(conn, _params) do
+    json(conn, [])
+  end
+
+  defp build_info_cng(user, params) do
+    info_params =
+      ["no_rich_text", "locked", "hide_network"]
+      |> Enum.reduce(%{}, fn key, res ->
+        if value = params[key] do
+          Map.put(res, key, value == "true")
+        else
+          res
+        end
+      end)
+
+    info_params =
+      if value = params["default_scope"] do
+        Map.put(info_params, "default_scope", value)
+      else
+        info_params
+      end
+
+    User.Info.profile_update(user.info, info_params)
+  end
+
+  defp parse_profile_bio(user, params) do
+    if bio = params["description"] do
+      Map.put(params, "bio", User.parse_bio(bio, user))
+    else
+      params
+    end
+  end
+
+  def update_profile(%{assigns: %{user: user}} = conn, params) do
+    params = parse_profile_bio(user, params)
+    info_cng = build_info_cng(user, params)
 
-    response = UserRepresenter.to_map(user, %{for: user})
-    |> Poison.encode!
+    with changeset <- User.update_changeset(user, params),
+         changeset <- Ecto.Changeset.put_embed(changeset, :info, info_cng),
+         {:ok, user} <- User.update_and_set_cache(changeset) do
+      CommonAPI.update(user)
+
+      conn
+      |> put_view(UserView)
+      |> render("user.json", %{user: user, for: user})
+    else
+      error ->
+        Logger.debug("Can't update user: #{inspect(error)}")
+        bad_request_reply(conn, "Can't update user")
+    end
+  end
+
+  def search(%{assigns: %{user: user}} = conn, %{"q" => _query} = params) do
+    activities = TwitterAPI.search(user, params)
 
     conn
-    |> json_reply(200, response)
+    |> put_view(ActivityView)
+    |> render("index.json", %{activities: activities, for: user})
+  end
+
+  def search_user(%{assigns: %{user: user}} = conn, %{"query" => query}) do
+    users = User.search(query, true)
+
+    conn
+    |> put_view(UserView)
+    |> render("index.json", %{users: users, for: user})
   end
 
   defp bad_request_reply(conn, error_message) do
-    json = Poison.encode!(%{"error" => error_message})
+    json = error_json(conn, error_message)
     json_reply(conn, 400, json)
   end
 
@@ -186,9 +666,35 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
   end
 
   defp forbidden_json_reply(conn, error_message) do
-    json = %{"error" => error_message, "request" => conn.request_path}
-    |> Poison.encode!
-
+    json = error_json(conn, error_message)
     json_reply(conn, 403, json)
   end
+
+  def only_if_public_instance(%{assigns: %{user: %User{}}} = conn, _), do: conn
+
+  def only_if_public_instance(conn, _) do
+    if Keyword.get(Application.get_env(:pleroma, :instance), :public) do
+      conn
+    else
+      conn
+      |> forbidden_json_reply("Invalid credentials.")
+      |> halt()
+    end
+  end
+
+  defp error_json(conn, error_message) do
+    %{"error" => error_message, "request" => conn.request_path} |> Jason.encode!()
+  end
+
+  def errors(conn, {:param_cast, _}) do
+    conn
+    |> put_status(400)
+    |> json("Invalid parameters")
+  end
+
+  def errors(conn, _) do
+    conn
+    |> put_status(500)
+    |> json("Something went wrong")
+  end
 end