Class: Decidim::DataPortabilityFileZipper

Inherits:
DataPortabilityFileReader show all
Defined in:
lib/decidim/data_portability_file_zipper.rb

Overview

This class performs a task: Creating a Zip file of all DataPortability classes. Originally meant for DataPortability functionality and adding user images to this file, but other usage can be found.

Instance Method Summary collapse

Methods inherited from DataPortabilityFileReader

#file_name, #file_path, #file_path_reader, #token, #valid_token?

Constructor Details

#initialize(user, data, images, token = nil) ⇒ DataPortabilityFileZipper

Public: Initializes the zipper with a user, data, and images to be zipped.

user - The user of data portability to be zipped. data - An array of all data to be zipped. images - An array of image files to be inclueded in the zipped file.



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# File 'lib/decidim/data_portability_file_zipper.rb', line 15

def initialize(user, data, images, token = nil)
  super(user, token)
  @export_data = data
  @export_images = images
end

Instance Method Details

#make_zip ⇒ Object

Public: Zips the file.

Returns a String with the zipped version of the file.



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# File 'lib/decidim/data_portability_file_zipper.rb', line 24

def make_zip
  Zip::OutputStream.open(file_path) do |zos|
    @export_data.each do |element|
      filename_file = element.last.filename(element.first.parameterize)

      zos.put_next_entry(filename_file)
      if element.last.read.presence
        zos.write element.last.read
      else
        zos.write "No data"
      end
    end
  end

  zipfile = Zip::File.open(file_path)
  @export_images.each do |image_block|
    next if image_block.last.nil?

    image_block.last.each do |image|
      next if image.file.nil?

      folder_name = image_block.first.parameterize
      uploader = Decidim::ApplicationUploader.new(image.model, image.mounted_as)
      if image.file.respond_to? :file
        uploader.cache!(File.open(image.file.file))
        uploader.retrieve_from_store!(image.file.filename)
      else
        my_uploader = image.mounted_as
        element = image.model

        element.send(my_uploader).cache_stored_file!
        element.send(my_uploader).retrieve_from_cache!(element.send(my_uploader).cache_name)
      end
      my_image_path = File.open(image.file.file)
      next unless File.exist?(my_image_path)

      zipfile.add("#{folder_name}/#{image.file.filename}", my_image_path)
      CarrierWave.clean_cached_files!
    end
  end
  zipfile.close
end