# This is a subclass of Shrine base that will be further configured for it's requirements.
# This will be included in the model to manage the file.

class ImageUploader < Shrine
  ALLOWED_TYPES  = %w[image/jpeg image/png image/webp]
  MAX_SIZE       = 5*1024*1024 # 5 MB
  MAX_DIMENSIONS = [8000, 8000] # larger than 2000x2000 will be resized

  plugin :remove_attachment
  plugin :pretty_location
  plugin :validation_helpers
  plugin :store_dimensions, log_subscriber: nil
  # plugin :derivation_endpoint, prefix: "derivations/image"

  # File validations (requires `validation_helpers` plugin)
  Attacher.validate do
    validate_size 0..MAX_SIZE

    if validate_mime_type ALLOWED_TYPES, message: "must be a valid JPEG or PNG file"
      validate_max_dimensions MAX_DIMENSIONS, message: "must be not larger than 2000x2000 pixels"
    end
  end

  # Thumbnails processor (requires `derivatives` plugin)
  Attacher.derivatives do |original|
    puts "original=#{original}"
    magick = ImageProcessing::MiniMagick.source(original)
    {
      thumb: magick.resize_to_limit!(160,120),
      small: magick.resize_to_limit!(320, 240),
      #medium: magick.resize_to_limit!(800, 600),
      large: magick.resize_to_limit(2000,2000).composite!('public/logo/watermark.png', gravity: 'east')
    }
    # GenerateThumbnail.call(original, width, height) # lib/generate_thumbnail.rb

    # THUMBNAILS.transform_values do |(width, height)|
    #   GenerateThumbnail.call(original, width, height) # lib/generate_thumbnail.rb
    # end
  end

  # Default to dynamic thumbnail URL (requires `default_url` plugin)
  # Attacher.default_url do |derivative: nil, **|
    # file&.derivation_url(:thumbnail, *THUMBNAILS.fetch(derivative)) if derivative
  # end

  Attacher.default_url do |derivative: nil, **|
    '/images/dummy/no-screenshots-upload-one.svg'
  end

  # Dynamic thumbnail definition (requires `derivation_endpoint` plugin)
  # derivation :thumbnail do |file, width, height|
  #   GenerateThumbnail.call(file, width.to_i, height.to_i) # lib/generate_thumbnail.rb
  # end
end
