+ do_strip = Keyword.fetch!(settings, :strip_exif)
+ [filetype, _ext] = String.split(content_type, "/")
+
+ if filetype == "image" and do_strip == true do
+ Mogrify.open(file) |> Mogrify.custom("strip") |> Mogrify.save(in_place: true)
+ end
+ end
+
+ defp create_name(uuid, ext, type) do
+ case type do
+ "application/octet-stream" ->
+ String.downcase(Enum.join([uuid, ext], "."))
+
+ "audio/mpeg" ->
+ String.downcase(Enum.join([uuid, "mp3"], "."))
+
+ _ ->
+ String.downcase(Enum.join([uuid, List.last(String.split(type, "/"))], "."))
+ end
+ end
+
+ defp get_uuid(file, should_dedupe) do
+ if should_dedupe do
+ Base.encode16(:crypto.hash(:sha256, File.read!(file.path)))
+ else
+ UUID.generate()
+ end
+ end
+
+ defp get_name(file, uuid, type, should_dedupe) do
+ if should_dedupe do
+ create_name(uuid, List.last(String.split(file.filename, ".")), type)
+ else
+ parts = String.split(file.filename, ".")
+
+ new_filename =
+ if length(parts) > 1 do
+ Enum.drop(parts, -1) |> Enum.join(".")
+ else
+ Enum.join(parts)
+ end
+
+ case type do
+ "application/octet-stream" -> file.filename
+ "audio/mpeg" -> new_filename <> ".mp3"
+ "image/jpeg" -> new_filename <> ".jpg"
+ _ -> Enum.join([new_filename, String.split(type, "/") |> List.last()], ".")
+ end
+ end
+ end
+
+ def get_content_type(file) do
+ match =
+ File.open(file, [:read], fn f ->
+ case IO.binread(f, 8) do
+ <<0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A>> ->
+ "image/png"
+
+ <<0x47, 0x49, 0x46, 0x38, _, 0x61, _, _>> ->
+ "image/gif"
+
+ <<0xFF, 0xD8, 0xFF, _, _, _, _, _>> ->
+ "image/jpeg"
+
+ <<0x1A, 0x45, 0xDF, 0xA3, _, _, _, _>> ->
+ "video/webm"
+
+ <<0x00, 0x00, 0x00, _, 0x66, 0x74, 0x79, 0x70>> ->
+ "video/mp4"
+
+ <<0x49, 0x44, 0x33, _, _, _, _, _>> ->
+ "audio/mpeg"
+
+ <<255, 251, _, 68, 0, 0, 0, 0>> ->
+ "audio/mpeg"
+
+ <<0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00>> ->
+ case IO.binread(f, 27) do
+ <<_::size(160), 0x80, 0x74, 0x68, 0x65, 0x6F, 0x72, 0x61>> ->
+ "video/ogg"
+
+ _ ->
+ "audio/ogg"
+ end
+
+ <<0x52, 0x49, 0x46, 0x46, _, _, _, _>> ->
+ "audio/wav"
+
+ _ ->
+ "application/octet-stream"
+ end
+ end)
+
+ case match do
+ {:ok, type} -> type
+ _e -> "application/octet-stream"
+ end