Module: StwEngine::Helpers::Common

Extended by:
Common
Included in:
Common
Defined in:
lib/stw_engine/helpers/common.rb

Instance Method Summary collapse

Instance Method Details

#createsig(body) ⇒ Object

function to create a hash



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# File 'lib/stw_engine/helpers/common.rb', line 12

def createsig(body)
	Digest::MD5.hexdigest( sigflat body )
end

#http_get(addr, params) ⇒ Object

struc = {stwaccesskeyid: api_key, stwu: api_secret }



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# File 'lib/stw_engine/helpers/common.rb', line 40

def http_get(addr, params)
   
	uri = URI.parse(addr)
	# Add params to URI
	uri.query = URI.encode_www_form( params )

	begin
	uri.open.read
	  rescue OpenURI::HTTPError => ex
			return 'http_error'
	end
	
end

#nokogiri_val(xml, tag) ⇒ Object 



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# File 'lib/stw_engine/helpers/common.rb', line 138

def nokogiri_val(xml, tag)
	xml_doc = Nokogiri::XML(xml)
	a = xml_doc.xpath("//stw:#{tag}").inner_text.strip
	
	
	
end

#sigflat(body) ⇒ Object 



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# File 'lib/stw_engine/helpers/common.rb', line 16

def sigflat(body)
	if body.class == Hash
	arr = []
	body.each do |key, value|
	arr << "#{sigflat key}=>#{sigflat value}"
	end
	body = arr
	end
  if body.class == Array
	str = ''
	body.map! do |value|
	  sigflat value
	end.sort!.each do |value|
	  str << value
	end
  end
  if body.class != String
	body = body.to_s << body.class.to_s
  end
  body
end

#stw_show(url, options = {}) ⇒ Object

function to store the image and return the image url



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# File 'lib/stw_engine/helpers/common.rb', line 55

def stw_show url, options ={}
	sizes = ['xlg', 'lg', 'sm', 'vsm', 'tny', 'mcr']
	params = {:stwaccesskeyid => StwEngine.api_key , 
	:stwu => StwEngine.api_secret}
	
	if options.key?(:size)
		case options[:size]
			when 'xlg'
				params['stwxmax'] = 320
			when 'lg'
				params['stwxmax'] = 200
			when 'sm'
				params['stwxmax'] = 120
			when 'vsm'
				params['stwxmax'] = 100
			when 'tny'
				params['stwxmax'] = 90
			when 'mcr'
				params['stwxmax'] = 75
	
		end
	end
	params[:stwurl] = url 
	
	
	filename = createsig(params)
	filename << '.jpg'
	
	#return the file if exists
	if FileTest.exist?("#{Rails.root}/public/images/#{filename}")
		img = "<img src=\"/stw/#{filename}\"/>"
		img.respond_to?(:html_safe) ? img.html_safe : img 
		return img
	
	end
	
	#else send http request to retrieve the image		
	res = http_get(StwEngine.image_url , params)
	
	if  res == 'http_error'
	 return 'http_error'
	end
	#puts res.body
	


	xml_doc = Nokogiri::XML(res)
	
	
	elems = xml_doc.xpath("//stw:ThumbnailResult/stw:Thumbnail")
	image = elems[0].inner_text.strip
	
	if elems[0].attr('Exists') == 'true'
		image = elems[0].inner_text.strip
	end
	
	#if not http error show the error image not save
	status_codes = ['fix_and_retry','noretry','noexist']
	stat = elems[1].inner_text.strip
	
	if status_codes.include?stat
		img = "<img src=\"#{image}\"/>"
		return img.respond_to?(:html_safe) ? img.html_safe : img 
		
	end
	
	
	

	
	directory =  "#{Rails.root}/public/stw"
	Dir.mkdir("#{Rails.root}/public/stw") unless Dir.exist? "#{Rails.root}/public/stw"
	path = File.join(directory, filename)
	
	open(path, 'wb') do |file|
		file << open(image).read
	end
	
	img = "<img src=\"/stw/#{filename}\"/>"
	img.respond_to?(:html_safe) ? img.html_safe : img 

end

#stw_show_info ⇒ Object

show account info



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# File 'lib/stw_engine/helpers/common.rb', line 148

def stw_show_info
	info = ['Status', 'Account_Level', 'Inside_Pages', 'Custom_Size', 'Full_Length', 
	'Refresh_OnDemand', 'Custom_Delay', 'Custom_Quality', 'Custom_Messages', 'Custom_Resolution']
	info_h = Hash.new
	
	#get account info
	params = {:stwaccesskeyid => StwEngine.api_key , :stwu => StwEngine.api_secret }
	res = http_get(StwEngine. , params)
	
	info.each {|x| info_h[x] = nokogiri_val(res,x)  }
	
	
	
	if info_h['Account_Level'] == '1'
		info_h['Account_Level'] =  'Basic'
	
	elsif info_h['Account_Level'] == '2'
		info_h['Account_Level'] =  'Plus'
	else 
		info_h['Account_Level'] = 'Free'
	
	end
	
	return info_h
	
	
	#http://images.shrinktheweb.com/account.php?".http_build_query($args)

end