1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Web.ControllerHelper do
6 use Pleroma.Web, :controller
8 # As in MastoAPI, per https://api.rubyonrails.org/classes/ActiveModel/Type/Boolean.html
9 @falsy_param_values [false, 0, "0", "f", "F", "false", "FALSE", "off", "OFF"]
10 def truthy_param?(blank_value) when blank_value in [nil, ""], do: nil
11 def truthy_param?(value), do: value not in @falsy_param_values
13 def json_response(conn, status, json) do
19 @spec fetch_integer_param(map(), String.t(), integer() | nil) :: integer() | nil
20 def fetch_integer_param(params, name, default \\ nil) do
22 |> Map.get(name, default)
23 |> param_to_integer(default)
26 defp param_to_integer(val, _) when is_integer(val), do: val
28 defp param_to_integer(val, default) when is_binary(val) do
29 case Integer.parse(val) do
35 defp param_to_integer(_, default), do: default
48 |> Map.drop(["since_id", "max_id", "min_id"])
51 last = List.last(activities)
53 func3 = func3 || (&mastodon_api_url/3)
54 func4 = func4 || (&mastodon_api_url/4)
61 |> Map.get("limit", "20")
62 |> String.to_integer()
65 if length(activities) <= limit do
71 |> Enum.at(limit * -1)
75 {next_url, prev_url} =
82 Map.merge(params, %{max_id: max_id})
88 Map.merge(params, %{min_id: min_id})
96 Map.merge(params, %{max_id: max_id})
101 Map.merge(params, %{min_id: min_id})
107 |> put_resp_header("link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")