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lib/alice/images.ex
defmodule Alice.Images do
@moduledoc """
Generates a random tag on images so that they aren't cached and always show up in replies.
"""
def uncache(potential_image) do
~w[gif png jpg jpeg]
|> Enum.any?(&(potential_image |> String.downcase() |> String.ends_with?(&1)))
|> case do
true -> "#{potential_image}##{random_tag()}"
_ -> potential_image
end
end
defp random_tag do
"0." <> tag = to_string(:rand.uniform())
tag
end
end