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