113 lines
2.7 KiB
Elixir
113 lines
2.7 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2019 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
|
|
|
|
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,
|
|
method,
|
|
activities,
|
|
param \\ nil,
|
|
params \\ %{},
|
|
func3 \\ nil,
|
|
func4 \\ nil
|
|
) do
|
|
params =
|
|
conn.params
|
|
|> Map.drop(["since_id", "max_id", "min_id"])
|
|
|> Map.merge(params)
|
|
|
|
last = List.last(activities)
|
|
|
|
func3 = func3 || (&mastodon_api_url/3)
|
|
func4 = func4 || (&mastodon_api_url/4)
|
|
|
|
if last do
|
|
max_id = last.id
|
|
|
|
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, prev_url} =
|
|
if param do
|
|
{
|
|
func4.(
|
|
Pleroma.Web.Endpoint,
|
|
method,
|
|
param,
|
|
Map.merge(params, %{max_id: max_id})
|
|
),
|
|
func4.(
|
|
Pleroma.Web.Endpoint,
|
|
method,
|
|
param,
|
|
Map.merge(params, %{min_id: min_id})
|
|
)
|
|
}
|
|
else
|
|
{
|
|
func3.(
|
|
Pleroma.Web.Endpoint,
|
|
method,
|
|
Map.merge(params, %{max_id: max_id})
|
|
),
|
|
func3.(
|
|
Pleroma.Web.Endpoint,
|
|
method,
|
|
Map.merge(params, %{min_id: min_id})
|
|
)
|
|
}
|
|
end
|
|
|
|
conn
|
|
|> put_resp_header("link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
|
|
else
|
|
conn
|
|
end
|
|
end
|
|
end
|