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

#add_size(size, params) ⇒ Object 



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# File 'lib/stw_engine/helpers/common.rb', line 60

def add_size size, params
    case 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
  return params
end

#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 160

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 = {}, only_url = false) ⇒ Object

function to store the image and return the image url



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# File 'lib/stw_engine/helpers/common.rb', line 80

def stw_show url, options ={}, only_url=false
  sizes = ['xlg', 'lg', 'sm', 'vsm', 'tny', 'mcr']
  params = {:stwaccesskeyid => StwEngine.api_key , 
  :stwu => StwEngine.api_secret}
  
  if StwEngine.size
    params = add_size StwEngine.size, params
  end
  
  if options.key?(:size)
    params = add_size options[:size], params

  end
  #return params
  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_path = "/stw/#{filename}"
  
  if only_url
    return img_path
  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 170

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

#stw_show_url(url, options = {}) ⇒ Object

function to return only url



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# File 'lib/stw_engine/helpers/common.rb', line 56

def stw_show_url url, options={}
  stw_show url, options, only_url=true
end