Claudio Ortolina
30 lines
773 B
Elixir
30 lines
773 B
Elixir
defmodule MusicLibraryWeb.ImageController do
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use MusicLibraryWeb, :controller
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alias MusicLibrary.Records
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@one_year 31_536_000
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def show(conn, %{"record_id" => record_id}) do
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case Records.get_image!(record_id) do
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nil ->
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send_resp(conn, 404, "Not found")
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image_data ->
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# TODO: move hash result to database
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etag = :crypto.hash(:sha256, image_data) |> Base.encode16()
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case get_req_header(conn, "if-none-match") do
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[^etag] ->
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send_resp(conn, 304, "")
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_ ->
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conn
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|> put_resp_content_type("image/jpeg", "utf-8")
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|> put_resp_header("cache-control", "public, max-age=#{@one_year}")
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|> send_resp(200, image_data)
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end
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end
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end
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end
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