# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ControllerHelper do
use Pleroma.Web, :controller
- # As in MastoAPI, per https://api.rubyonrails.org/classes/ActiveModel/Type/Boolean.html
- @falsy_param_values [false, 0, "0", "f", "F", "false", "FALSE", "off", "OFF"]
- def truthy_param?(blank_value) when blank_value in [nil, ""], do: nil
- def truthy_param?(value), do: value not in @falsy_param_values
+ alias Pleroma.Config
+
+ # As in Mastodon API, per https://api.rubyonrails.org/classes/ActiveModel/Type/Boolean.html
+ @falsy_param_values [false, 0, "0", "f", "F", "false", "False", "FALSE", "off", "OFF"]
+
+ def explicitly_falsy_param?(value), do: value in @falsy_param_values
+
+ # Note: `nil` and `""` are considered falsy values in Pleroma
+ def falsy_param?(value),
+ do: explicitly_falsy_param?(value) or value in [nil, ""]
+
+ def truthy_param?(value), do: not falsy_param?(value)
def json_response(conn, status, json) do
conn
|> put_status(status)
|> json(json)
end
+
+ @spec fetch_integer_param(map(), String.t(), integer() | nil) :: integer() | nil
+ def fetch_integer_param(params, name, default \\ nil) do
+ params
+ |> Map.get(name, default)
+ |> param_to_integer(default)
+ end
+
+ defp param_to_integer(val, _) when is_integer(val), do: val
+
+ defp param_to_integer(val, default) when is_binary(val) do
+ case Integer.parse(val) do
+ {res, _} -> res
+ _ -> default
+ end
+ end
+
+ defp param_to_integer(_, default), do: default
+
+ def add_link_headers(conn, activities, extra_params \\ %{})
+
+ def add_link_headers(%{assigns: %{skip_link_headers: true}} = conn, _activities, _extra_params),
+ do: conn
+
+ def add_link_headers(conn, activities, extra_params) do
+ case List.last(activities) do
+ %{id: max_id} ->
+ params =
+ conn.params
+ |> Map.drop(Map.keys(conn.path_params))
+ |> Map.drop(["since_id", "max_id", "min_id"])
+ |> Map.merge(extra_params)
+
+ limit =
+ params
+ |> Map.get("limit", "20")
+ |> String.to_integer()
+
+ min_id =
+ if length(activities) <= limit do
+ activities
+ |> List.first()
+ |> Map.get(:id)
+ else
+ activities
+ |> Enum.at(limit * -1)
+ |> Map.get(:id)
+ end
+
+ next_url = current_url(conn, Map.merge(params, %{max_id: max_id}))
+ prev_url = current_url(conn, Map.merge(params, %{min_id: min_id}))
+
+ put_resp_header(conn, "link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
+
+ _ ->
+ conn
+ end
+ end
+
+ def assign_account_by_id(%{params: %{"id" => id}} = conn, _) do
+ case Pleroma.User.get_cached_by_id(id) do
+ %Pleroma.User{} = account -> assign(conn, :account, account)
+ nil -> Pleroma.Web.MastodonAPI.FallbackController.call(conn, {:error, :not_found}) |> halt()
+ end
+ end
+
+ def try_render(conn, target, params) when is_binary(target) do
+ case render(conn, target, params) do
+ nil -> render_error(conn, :not_implemented, "Can't display this activity")
+ res -> res
+ end
+ end
+
+ def try_render(conn, _, _) do
+ render_error(conn, :not_implemented, "Can't display this activity")
+ end
+
+ @spec put_if_exist(map(), atom() | String.t(), any) :: map()
+ def put_if_exist(map, _key, nil), do: map
+
+ def put_if_exist(map, key, value), do: Map.put(map, key, value)
+
+ @doc "Whether to skip rendering `[:account][:pleroma][:relationship]`for statuses/notifications"
+ def skip_relationships?(params) do
+ if Config.get([:extensions, :output_relationships_in_statuses_by_default]) do
+ false
+ else
+ # BREAKING: older PleromaFE versions do not send this param but _do_ expect relationships.
+ not truthy_param?(params["with_relationships"])
+ end
+ end
end