Module: Imgwire::Uploads

Defined in:
lib/imgwire/uploads.rb

Defined Under Namespace

Classes: ResolvedUpload

Constant Summary collapse

DEFAULT_CONTENT_TYPE = 
'application/octet-stream'
MIME_TYPES = 
{
  '.avif' => 'image/avif',
  '.gif' => 'image/gif',
  '.jpeg' => 'image/jpeg',
  '.jpg' => 'image/jpeg',
  '.png' => 'image/png',
  '.webp' => 'image/webp'
}.freeze

Class Method Summary collapse

Class Method Details

.infer_content_length(file) ⇒ Object 



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# File 'lib/imgwire/uploads.rb', line 68

def infer_content_length(file)
  return file.size if file.respond_to?(:size) && file.size

  return File.size(file.path) if file.respond_to?(:path) && file.path

  return file.string.bytesize if file.is_a?(StringIO)

  nil
end

.infer_file_name(file) ⇒ Object 



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# File 'lib/imgwire/uploads.rb', line 55

def infer_file_name(file)
  return File.basename(file.path) if file.respond_to?(:path) && file.path
  return 'upload.bin' if file.is_a?(StringIO)

  nil
end

.infer_mime_type(file_name) ⇒ Object 



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# File 'lib/imgwire/uploads.rb', line 62

def infer_mime_type(file_name)
  return nil unless file_name

  MIME_TYPES[File.extname(file_name).downcase]
end

.resolve(file:, file_name: nil, mime_type: nil, content_length: nil) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/imgwire/uploads.rb', line 33

def resolve(file:, file_name: nil, mime_type: nil, content_length: nil)
  io = file
  inferred_file_name = file_name || infer_file_name(file)
  inferred_mime_type = mime_type || infer_mime_type(inferred_file_name)
  inferred_content_length = content_length || infer_content_length(file)

  raise ArgumentError, 'Upload file must respond to #read' unless io.respond_to?(:read)

  if inferred_file_name.nil? || inferred_file_name.empty?
    raise ArgumentError, 'Upload file_name could not be inferred'
  end

  raise ArgumentError, 'Upload content_length could not be inferred' if inferred_content_length.nil?

  ResolvedUpload.new(
    io: io,
    file_name: inferred_file_name,
    mime_type: inferred_mime_type || DEFAULT_CONTENT_TYPE,
    content_length: inferred_content_length
  )
end