class TimestampMaker

# File lib/timestamp_maker.rb, line 21
def self.instance
  @instance ||= new
end

# File lib/timestamp_maker.rb, line 25
def initialize(
  mime_recognizer: MimeRecognizers::Marcel.new,
  handlers: [
    Handlers::ImageMagick.new(
      time_zone_lookuper: TimeZoneLookupers::Wheretz.new
    ),
    Handlers::Ffmpeg.new(
      time_zone_lookuper: TimeZoneLookupers::Wheretz.new
    )
  ]
)
  @mime_recognizer = mime_recognizer
  @handlers = handlers
end

# File lib/timestamp_maker.rb, line 40
def add_timestamp(
  input_path, output_path,
  format: '%Y-%m-%d %H:%M:%S',
  time: nil,
  font_size: 32,
  font_family: 'Sans',
  font_color: 'white',
  background_color: '#000000B3',
  time_zone: nil,
  coordinate_origin: 'top-left',
  x: 32,
  y: 32,
  font_padding: 8
)
  mime_type = mime_recognizer.recognize(input_path)
  handler = handlers.find { |i| i.accept?(mime_type) }
  raise "Unsupported MIME type: ##{mime_type}" if handler.nil?

  time = handler.creation_time(input_path) if time.nil?
  raise ArgumentError unless time.is_a?(Time)

  time.localtime(TZInfo::Timezone.get(time_zone)) unless time_zone.nil?

  unless COORDINATE_ORIGINS.include?(coordinate_origin)
    raise(
      ArgumentError,
      "coordinate origin should be one of #{COORDINATE_ORIGINS.join(',')}"
    )
  end

  handler.add_timestamp(
    input_path, output_path, time,
    format: format,
    font_size: font_size,
    font_family: font_family,
    font_color: font_color,
    background_color: background_color,
    coordinate_origin: coordinate_origin,
    x: x,
    y: y,
    font_padding: font_padding
  )
end