1 defmodule Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl do
3 image = Map.get(data, :image)
5 if is_aws_signed_url(image) do
7 |> parse_query_params()
8 |> format_query_params()
9 |> get_expiration_timestamp()
14 defp is_aws_signed_url(""), do: nil
15 defp is_aws_signed_url(nil), do: nil
17 defp is_aws_signed_url(image) when is_binary(image) do
18 %URI{host: host, query: query} = URI.parse(image)
20 if String.contains?(host, "amazonaws.com") and
21 String.contains?(query, "X-Amz-Expires") do
28 defp is_aws_signed_url(_), do: nil
30 defp parse_query_params(image) do
31 %URI{query: query} = URI.parse(image)
35 defp format_query_params(query) do
37 |> String.split(~r/&|=/)
38 |> Enum.chunk_every(2)
39 |> Map.new(fn [k, v] -> {k, v} end)
42 defp get_expiration_timestamp(params) when is_map(params) do
45 |> Map.get("X-Amz-Date")
46 |> Timex.parse("{ISO:Basic:Z}")
48 Timex.to_unix(date) + String.to_integer(Map.get(params, "X-Amz-Expires"))
51 defp set_ttl(ttl, url) do
52 Cachex.expire_at(:rich_media_cache, url, ttl * 1000)