# encoding: utf-8
module Proclaim
	class ImageUploader < CarrierWave::Uploader::Base
		before :remove, :backup_cache_id
		after :remove, :delete_cache_directory
		after :remove, :delete_store_directory

		# Include RMagick or MiniMagick support:
		# include CarrierWave::RMagick
		# include CarrierWave::MiniMagick

		# Choose what kind of storage to use for this uploader:
		storage :file
		# storage :fog

		# Override the directory where uploaded files will be stored.
		# This is a sensible default for uploaders that are meant to be mounted:
		def store_dir
			"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
		end

		# Provide a default URL as a default if there hasn't been a file uploaded:
		# def default_url
		#   # For Rails 3.1+ asset pipeline compatibility:
		#   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
		#
		#   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
		# end

		# Process files as they are uploaded:
		# process :scale => [200, 300]
		#
		# def scale(width, height)
		#   # do something
		# end

		# Create different versions of your uploaded files:
		# version :thumb do
		#   process :resize_to_fit => [50, 50]
		# end

		# Add a white list of extensions which are allowed to be uploaded.
		# For images you might use something like this:
		# def extension_white_list
		#   %w(jpg jpeg gif png)
		# end

		# Override the filename of the uploaded files:
		# Avoid using model.id or version_name here, see uploader/store.rb for details.
		# def filename
		#   "something.jpg" if original_filename
		# end

		private

		def backup_cache_id
			@cache_id_was = cache_id
		end

		def delete_cache_directory
			@cache_id = @cache_id_was
			delete_cache_id
		end

		def delete_store_directory
			store_path = store_dir
			if Pathname.new(store_dir).relative?
				store_path = File.expand_path(store_dir, CarrierWave.root)
			end

			begin
				Dir.rmdir(store_path)
			rescue Errno::ENOENT
				# Ignore: path does not exist
			rescue Errno::ENOTDIR
				# Ignore: path is not a dir
			rescue Errno::ENOTEMPTY, Errno::EEXIST
				# Ignore: dir is not empty
			end
		end
	end
end