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40 lines
835 B
Elixir
40 lines
835 B
Elixir
defmodule Camo.Image do
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def image_url(input) do
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uri = URI.parse(input)
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cond do
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is_nil(uri.host) ->
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""
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is_nil(camo_key()) ->
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input
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uri.host in [cdn_host(), camo_host()] ->
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URI.to_string(%{uri | scheme: "https", port: 443})
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true ->
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camo_digest = :crypto.mac(:hmac, :sha, camo_key(), input) |> Base.encode16(case: :lower)
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camo_uri = %URI{
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host: camo_host(),
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path: "/" <> camo_digest,
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query: URI.encode_query(url: input),
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scheme: "https"
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}
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URI.to_string(camo_uri)
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end
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end
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defp cdn_host do
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Application.get_env(:philomena, :cdn_host)
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end
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defp camo_key do
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Application.get_env(:philomena, :camo_key)
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end
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defp camo_host do
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Application.get_env(:philomena, :camo_host)
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end
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end
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