Class: JekyllImgFlow::Providers::Flyimg

Inherits:
BaseProvider show all
Defined in:
lib/jekyll-imgflow/providers/flyimg.rb

Overview

Flyimg provider implementation using the standardized tag interface

Constant Summary collapse

TIMEOUT = 
10

Constants inherited from BaseProvider

BaseProvider::SMARTCROP_POSITIONS

Instance Attribute Summary

Attributes inherited from BaseProvider

#config

Instance Method Summary collapse

Methods inherited from BaseProvider

#add_watermark, #alpha_opacity=, #check_http_service, #convert_format, #crop, #encode_file_url, #format, #initialize, #opacity, #operations, #optimize, provider_name, #quality, #quality=, #reset_operations, #resize, #supports_operation?, supports_operation?, unsupported_operations, #watermark

Constructor Details

This class inherits a constructor from JekyllImgFlow::Providers::BaseProvider

Instance Method Details

#available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jekyll-imgflow/providers/flyimg.rb', line 14

def available?
  # Check if flyimg service is running
  return false unless @config.respond_to?(:flyimg_url) && @config.flyimg_url

  check_http_service(@config.flyimg_url)
end

#build_combined_flyimg_url(input_path) ⇒ Object 



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# File 'lib/jekyll-imgflow/providers/flyimg.rb', line 33

def build_combined_flyimg_url(input_path)
  raise "flyimg_url not set" unless @config.flyimg_url

  encoded_url = encode_file_url(input_path)
  options = []

  # Add all operations to single options string
  @operations.each do |operation|
    case operation[:type]
    when :resize
      # Tags now provide complete calculated values.
      # c_1 forces the image to fill the exact width x height area.
      # pns_0 allows upscaling when the source is smaller than the target
      # (Flyimg's pns/preserve-natural-size defaults to 1, blocking enlarge).
      options << "w_#{operation[:width]}"
      options << "pns_0"
      if operation[:height]
        options << "h_#{operation[:height]}"
        options << "c_1"
      end

    when :crop
      opts = operation[:options]
      params = operation[:params] || {}

      # Check for keep parameter (smartcrop support)
      keep = opts[:keep] || params[:keep] || params[:position]

      if operation[:ratio] && keep && SMARTCROP_POSITIONS.include?(keep.to_s)
        # Use smartcrop (Flyimg's smc option picks the best crop area)
        crop_width = opts[:calculated_width]
        crop_height = opts[:calculated_height]

        options << "w_#{crop_width}"
        options << "h_#{crop_height}"
        options << "c_1"
        options << "smc_1"
      else
        # Use basic cropping via extract (top-left / bottom-right coordinates)
        if operation[:ratio]
          crop_x = opts[:calculated_x]
          crop_y = opts[:calculated_y]
          crop_width = opts[:calculated_width]
          crop_height = opts[:calculated_height]
        else
          crop_x = opts[:x]
          crop_y = opts[:y]
          crop_width = opts[:width]
          crop_height = opts[:height]
        end
        options << "e_1"
        options << "p1x_#{crop_x}"
        options << "p1y_#{crop_y}"
        options << "p2x_#{crop_x + crop_width}"
        options << "p2y_#{crop_y + crop_height}"
      end

    when :quality
      flyimg_quality = translate_quality_to_flyimg(operation[:quality])
      options << "q_#{flyimg_quality}"

    when :format
      # Assume validated input from tags
      options << "o_#{operation[:format]}"

    when :watermark
      watermark_path = operation[:watermark_path]
      position = operation[:options][:position]
      opacity = operation[:options][:opacity]

      # Flyimg watermark parameters
      encoded_watermark = encode_file_url(watermark_path)
      position_param = translate_flyimg_position(position)
      opacity_param = (opacity * 100).round
      options << "wm_#{encoded_watermark}_#{position_param}_#{opacity_param}"

    when :alpha_opacity
      opacity = operation[:opacity]
      options << "a_#{(opacity * 255).round}"
    end
  end

  # Preserve format when no explicit format operation is requested.
  # Without this, chained HTTP requests (e.g. quality-only steps after a
  # prior format conversion) would lose the previously converted format.
  unless @operations.any? { |op| op[:type] == :format }
    input_ext = File.extname(input_path).delete(".").downcase
    options << "o_#{map_format(input_ext)}" unless input_ext.empty?
  end

  # Build combined URL: base/upload/options/options,.../encoded_url
  options_string = options.join(",")
  "#{@config.flyimg_url}/upload/#{options_string}/#{encoded_url}"
end

#execute(input_path, output_path) ⇒ Object 



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# File 'lib/jekyll-imgflow/providers/flyimg.rb', line 21

def execute(input_path, output_path)
  return if @operations.empty?

  # Build single Flyimg URL with all operations combined
  url = build_combined_flyimg_url(input_path)

  # Fetch the result in one request
  fetch_and_save(url, output_path)
  reset_operations
  output_path
end