X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Ftwitter_api%2Ftwitter_api_controller.ex;h=c6637e38db9f37d8b3773db077612214dcc1789b;hb=2791ce9a1ff2365ac7256f5e1dc2324dee2f82c9;hp=320f2fcf4e37ebe2564fde82fee8997f7ab09611;hpb=98b8f087832a793fa1b56d26acfec46360e73d00;p=akkoma

diff --git a/lib/pleroma/web/twitter_api/twitter_api_controller.ex b/lib/pleroma/web/twitter_api/twitter_api_controller.ex
index 320f2fcf4..c25cb0876 100644
--- a/lib/pleroma/web/twitter_api/twitter_api_controller.ex
+++ b/lib/pleroma/web/twitter_api/twitter_api_controller.ex
@@ -1,16 +1,30 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.TwitterAPI.Controller do
   use Pleroma.Web, :controller
+
+  import Pleroma.Web.ControllerHelper, only: [json_response: 3]
+
   alias Pleroma.Web.TwitterAPI.{TwitterAPI, UserView, ActivityView, NotificationView}
   alias Pleroma.Web.CommonAPI
-  alias Pleroma.{Repo, Activity, User, Notification}
+  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
     token = Phoenix.Token.sign(conn, "user socket", user.id)
-    render(conn, UserView, "show.json", %{user: user, token: token})
+
+    conn
+    |> put_view(UserView)
+    |> render("show.json", %{user: user, token: token})
   end
 
   def status_update(%{assigns: %{user: user}} = conn, %{"status" => _} = status_data) do
@@ -51,7 +65,8 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     activities = ActivityPub.fetch_public_activities(params)
 
     conn
-    |> render(ActivityView, "index.json", %{activities: activities, for: user})
+    |> put_view(ActivityView)
+    |> render("index.json", %{activities: activities, for: user})
   end
 
   def public_timeline(%{assigns: %{user: user}} = conn, params) do
@@ -64,7 +79,8 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     activities = ActivityPub.fetch_public_activities(params)
 
     conn
-    |> render(ActivityView, "index.json", %{activities: activities, for: user})
+    |> put_view(ActivityView)
+    |> render("index.json", %{activities: activities, for: user})
   end
 
   def friends_timeline(%{assigns: %{user: user}} = conn, params) do
@@ -74,22 +90,40 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
       |> Map.put("blocking_user", user)
       |> Map.put("user", user)
 
-    activities = ActivityPub.fetch_activities([user.ap_id | user.following], params)
+    activities =
+      ActivityPub.fetch_activities([user.ap_id | user.following], params)
+      |> ActivityPub.contain_timeline(user)
 
     conn
-    |> render(ActivityView, "index.json", %{activities: activities, for: user})
+    |> put_view(ActivityView)
+    |> render("index.json", %{activities: activities, for: user})
   end
 
   def show_user(conn, params) do
-    with {:ok, shown} <- TwitterAPI.get_user(params) do
-      if user = conn.assigns.user do
-        render(conn, UserView, "show.json", %{user: shown, for: user})
-      else
-        render(conn, UserView, "show.json", %{user: shown})
-      end
+    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
 
@@ -99,7 +133,8 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
         activities = ActivityPub.fetch_user_activities(target_user, user, params)
 
         conn
-        |> render(ActivityView, "index.json", %{activities: activities, for: user})
+        |> put_view(ActivityView)
+        |> render("index.json", %{activities: activities, for: user})
 
       {:error, msg} ->
         bad_request_reply(conn, msg)
@@ -115,20 +150,52 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     activities = ActivityPub.fetch_activities([user.ap_id], params)
 
     conn
-    |> render(ActivityView, "index.json", %{activities: activities, for: user})
+    |> 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
-    |> render(NotificationView, "notification.json", %{notifications: notifications, for: user})
+    |> 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} ->
-        render(conn, UserView, "show.json", %{user: followed, for: user})
+        conn
+        |> put_view(UserView)
+        |> render("show.json", %{user: followed, for: user})
 
       {:error, msg} ->
         forbidden_json_reply(conn, msg)
@@ -138,7 +205,9 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
   def block(%{assigns: %{user: user}} = conn, params) do
     case TwitterAPI.block(user, params) do
       {:ok, user, blocked} ->
-        render(conn, UserView, "show.json", %{user: blocked, for: user})
+        conn
+        |> put_view(UserView)
+        |> render("show.json", %{user: blocked, for: user})
 
       {:error, msg} ->
         forbidden_json_reply(conn, msg)
@@ -148,7 +217,9 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
   def unblock(%{assigns: %{user: user}} = conn, params) do
     case TwitterAPI.unblock(user, params) do
       {:ok, user, blocked} ->
-        render(conn, UserView, "show.json", %{user: blocked, for: user})
+        conn
+        |> put_view(UserView)
+        |> render("show.json", %{user: blocked, for: user})
 
       {:error, msg} ->
         forbidden_json_reply(conn, msg)
@@ -157,14 +228,18 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
 
   def delete_post(%{assigns: %{user: user}} = conn, %{"id" => id}) do
     with {:ok, activity} <- TwitterAPI.delete(user, id) do
-      render(conn, ActivityView, "activity.json", %{activity: activity, for: user})
+      conn
+      |> put_view(ActivityView)
+      |> render("activity.json", %{activity: activity, for: user})
     end
   end
 
   def unfollow(%{assigns: %{user: user}} = conn, params) do
     case TwitterAPI.unfollow(user, params) do
       {:ok, user, unfollowed} ->
-        render(conn, UserView, "show.json", %{user: unfollowed, for: user})
+        conn
+        |> put_view(UserView)
+        |> render("show.json", %{user: unfollowed, for: user})
 
       {:error, msg} ->
         forbidden_json_reply(conn, msg)
@@ -174,7 +249,9 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
   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
-      render(conn, ActivityView, "activity.json", %{activity: activity, for: user})
+      conn
+      |> put_view(ActivityView)
+      |> render("activity.json", %{activity: activity, for: user})
     end
   end
 
@@ -188,20 +265,56 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
              "user" => user
            }) do
       conn
-      |> render(ActivityView, "index.json", %{activities: activities, for: user})
+      |> put_view(ActivityView)
+      |> render("index.json", %{activities: activities, for: user})
     end
   end
 
-  def upload(conn, %{"media" => media}) do
-    response = TwitterAPI.upload(media)
+  @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
+    |> put_status(status)
+    |> json(response_body)
+  end
+
+  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 upload_json(conn, %{"media" => media}) do
-    response = TwitterAPI.upload(media, "json")
+  def upload_json(%{assigns: %{user: user}} = conn, %{"media" => media}) do
+    response = TwitterAPI.upload(media, user, "json")
 
     conn
     |> json_reply(200, response)
@@ -218,26 +331,46 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
   end
 
   def favorite(%{assigns: %{user: user}} = conn, %{"id" => id}) do
-    with {:ok, activity} <- TwitterAPI.fav(user, id) do
-      render(conn, ActivityView, "activity.json", %{activity: activity, for: user})
+    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
-    with {:ok, activity} <- TwitterAPI.unfav(user, id) do
-      render(conn, ActivityView, "activity.json", %{activity: activity, for: user})
+    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
-    with {:ok, activity} <- TwitterAPI.repeat(user, id) do
-      render(conn, ActivityView, "activity.json", %{activity: activity, for: user})
+    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
+
+  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
-      render(conn, UserView, "show.json", %{user: user})
+      conn
+      |> put_view(UserView)
+      |> render("show.json", %{user: user})
     else
       {:error, errors} ->
         conn
@@ -245,20 +378,54 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     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_response(:no_content, "")
+    end
+  end
+
   def update_avatar(%{assigns: %{user: user}} = conn, params) do
-    {:ok, object} = ActivityPub.upload(params)
+    {: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)
 
-    render(conn, UserView, "show.json", %{user: user, for: 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"]}),
-         new_info <- Map.put(user.info, "banner", object.data),
-         change <- User.info_changeset(user, %{info: new_info}),
-         {:ok, user} <- User.update_and_set_cache(change) 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!()
@@ -269,10 +436,11 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
   end
 
   def update_background(%{assigns: %{user: user}} = conn, params) do
-    with {:ok, object} <- ActivityPub.upload(params),
-         new_info <- Map.put(user.info, "background", object.data),
-         change <- User.info_changeset(user, %{info: new_info}),
-         {:ok, _user} <- User.update_and_set_cache(change) 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!()
 
@@ -294,35 +462,93 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     end
   end
 
-  def update_most_recent_notification(%{assigns: %{user: user}} = conn, %{"id" => id}) do
-    with id when is_number(id) <- String.to_integer(id),
-         info <- user.info,
-         mrn <- max(id, user.info["most_recent_notification"] || 0),
-         updated_info <- Map.put(info, "most_recent_notification", mrn),
-         changeset <- User.info_changeset(user, %{info: updated_info}),
-         {:ok, _user} <- User.update_and_set_cache(changeset) do
+  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
-      |> json_reply(200, Jason.encode!(mrn))
+      |> put_view(UserView)
+      |> render("index.json", %{users: followers, for: conn.assigns[:user]})
     else
-      _e -> bad_request_reply(conn, "Can't update.")
+      _e -> bad_request_reply(conn, "Can't get followers")
     end
   end
 
-  def followers(conn, params) do
+  def friends(%{assigns: %{user: for_user}} = conn, params) do
     with {:ok, user} <- TwitterAPI.get_user(conn.assigns[:user], params),
-         {:ok, followers} <- User.get_followers(user) do
-      render(conn, UserView, "index.json", %{users: followers, for: conn.assigns[:user]})
+         {: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 followers")
+      _e -> bad_request_reply(conn, "Can't get friends")
     end
   end
 
-  def friends(conn, params) do
+  def friend_requests(conn, params) do
     with {:ok, user} <- TwitterAPI.get_user(conn.assigns[:user], params),
-         {:ok, friends} <- User.get_friends(user) do
-      render(conn, UserView, "index.json", %{users: friends, for: conn.assigns[:user]})
+         {: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 friends")
+      _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
 
@@ -343,19 +569,51 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     json(conn, Jason.encode!([]))
   end
 
-  def update_profile(%{assigns: %{user: user}} = conn, params) do
-    params =
-      if bio = params["description"] do
-        bio_brs = Regex.replace(~r/\r?\n/, bio, "<br>")
-        Map.put(params, "bio", bio_brs)
+  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
-        params
+        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)
+
     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)
-      render(conn, UserView, "user.json", %{user: user, for: user})
+
+      conn
+      |> put_view(UserView)
+      |> render("user.json", %{user: user, for: user})
     else
       error ->
         Logger.debug("Can't update user: #{inspect(error)}")
@@ -367,7 +625,16 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     activities = TwitterAPI.search(user, params)
 
     conn
-    |> render(ActivityView, "index.json", %{activities: activities, for: user})
+    |> 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
@@ -386,7 +653,31 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     json_reply(conn, 403, json)
   end
 
+  def only_if_public_instance(conn = %{conn: %{assigns: %{user: _user}}}, _), 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