forked from AkkomaGang/akkoma
136 lines
4.3 KiB
Elixir
136 lines
4.3 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Web.ControllerHelper do
|
|
use Pleroma.Web, :controller
|
|
|
|
alias Pleroma.Pagination
|
|
|
|
# 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 get_pagination_fields(conn, activities, extra_params) do
|
|
%{"next" => next_url, "prev" => prev_url} ->
|
|
put_resp_header(conn, "link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
|
|
|
|
_ ->
|
|
conn
|
|
end
|
|
end
|
|
|
|
@id_keys Pagination.page_keys() -- ["limit", "order"]
|
|
defp build_pagination_fields(conn, min_id, max_id, extra_params) do
|
|
params =
|
|
conn.params
|
|
|> Map.drop(Map.keys(conn.path_params))
|
|
|> Map.merge(extra_params)
|
|
|> Map.drop(@id_keys)
|
|
|
|
fields = %{
|
|
"next" => current_url(conn, Map.put(params, :max_id, max_id)),
|
|
"prev" => current_url(conn, Map.put(params, :min_id, min_id))
|
|
}
|
|
|
|
# Generating an `id` without already present pagination keys would
|
|
# need a query-restriction with an `q.id >= ^id` or `q.id <= ^id`
|
|
# instead of the `q.id > ^min_id` and `q.id < ^max_id`.
|
|
# This is because we only have ids present inside of the page, while
|
|
# `min_id`, `since_id` and `max_id` requires to know one outside of it.
|
|
if Map.take(conn.params, @id_keys) != %{} do
|
|
Map.put(fields, "id", current_url(conn))
|
|
else
|
|
fields
|
|
end
|
|
end
|
|
|
|
def get_pagination_fields(conn, activities, extra_params \\ %{}) do
|
|
case List.last(activities) do
|
|
%{pagination_id: max_id} when not is_nil(max_id) ->
|
|
%{pagination_id: min_id} =
|
|
activities
|
|
|> List.first()
|
|
|
|
build_pagination_fields(conn, min_id, max_id, extra_params)
|
|
|
|
%{id: max_id} ->
|
|
%{id: min_id} =
|
|
activities
|
|
|> List.first()
|
|
|
|
build_pagination_fields(conn, min_id, max_id, extra_params)
|
|
|
|
_ ->
|
|
%{}
|
|
end
|
|
end
|
|
|
|
def assign_account_by_id(conn, _) do
|
|
case Pleroma.User.get_cached_by_id(conn.params.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
|
|
|
|
@doc """
|
|
Returns true if request specifies to include embedded relationships in account objects.
|
|
May only be used in selected account-related endpoints; has no effect for status- or
|
|
notification-related endpoints.
|
|
"""
|
|
# Intended for PleromaFE: https://git.pleroma.social/pleroma/pleroma-fe/-/issues/838
|
|
def embed_relationships?(params) do
|
|
# To do once OpenAPI transition mess is over: just `truthy_param?(params[:with_relationships])`
|
|
params
|
|
|> Map.get(:with_relationships, params["with_relationships"])
|
|
|> truthy_param?()
|
|
end
|
|
end
|