Class: PrevisaoClimaTempo

Inherits:
Object
  • Object
show all
Defined in:
lib/previsao-clima-tempo.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(option) ⇒ PrevisaoClimaTempo

Returns a new instance of PrevisaoClimaTempo.

Raises:

  • (TypeError) 


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# File 'lib/previsao-clima-tempo.rb', line 14

def initialize(option)
  raise TypeError     unless option.kind_of? Hash
  raise ArgumentError unless option.has_key? :codCity

  @codCity = option[:codCity]
end

Instance Attribute Details

#codCity ⇒ Object (readonly)

Returns the value of attribute codCity.



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# File 'lib/previsao-clima-tempo.rb', line 12

def codCity
  @codCity
end

Instance Method Details

#day(date) ⇒ Object

Returns the forecast for the date informed, maximum current date + 13 days from webservice

Example:

>> PrevisaoClimaTempo.new(:codCity => '314').day("02-03-2012".to_date)

Arguments:

date: (Date)



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# File 'lib/previsao-clima-tempo.rb', line 32

def day(date)
  
  days = self.days(14)
  
  day = Object
  
  days.each do |dayEach|
    break day = dayEach if dayEach.dia == date.strftime("%d-%m-%Y")   
  end
  
  day
   
end

#days(qtdDays) ⇒ Object

Returns a collection of objects PrevisaoDia, the maximum current date + 13 days from webservice Example:

>> PrevisaoClimaTempo.new(:codCity => '314').days(4)

Arguments:

qtdDays: (Integer)



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# File 'lib/previsao-clima-tempo.rb', line 55

def days(qtdDays)
  
  days = Array.new

   urlPadrao    = "http://servicos.cptec.inpe.br/XML/cidade/7dias/#{@codCity}/previsao.xml"
   
   urlEstendida = "http://servicos.cptec.inpe.br/XML/cidade/#{@codCity}/estendida.xml"
   
   loadDays(urlPadrao,days,qtdDays)
   
   if(qtdDays > 4)
     
     loadDays(urlEstendida,days,qtdDays)
     
   end
   
   days
   
end

#fullFromPage ⇒ Object

Returns a hash of condtions of weather whith 5 days from page.

It’s more complete than the webservice

Example:

>> PrevisaoClimaTempo.new(:codCity => '314').fullFromPage

Arguments:



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# File 'lib/previsao-clima-tempo.rb', line 123

def fullFromPage
  
 request ||= requestHtml
 
 @previsoes = Hash.new
 count = 1
 
 until count > 5 do
      @previsoes[count] = {    
                               :last_update                  => request.xpath("//p[@class='clear left paragrafo-padrao']").text[/(\d+)/]+":00",
                               :date                         => request.xpath("//div[@class='box-prev-completa'][#{count}]//span[@class='data-prev']").text.strip+"/"+Time.now().year.to_s,
                               :condition                    => request.xpath("//div[@class='box-prev-completa'][#{count}]/span[@class='left left5 paragrafo-padrao top10 fraseologia-prev']").text.strip,
                               :wind                         => request.xpath("//div[@class='box-prev-completa'][#{count}]//li[@class='velocidade-vento-prev-completa list-style-none']/span[2]").text.strip,
                               :probability_of_precipitation => request.xpath("//div[@class='box-prev-completa'][#{count}]//li[@class='prob-chuva-prev-completa list-style-none']/span[2]").text.strip,
                               :moisture_relative_complete   => { :max => request.xpath("//div[@class='box-prev-completa'][#{count}]//li[@class='umidade-relativa-prev-completa list-style-none']/span[2]").text.strip,
                                                                  :min => request.xpath("//div[@class='box-prev-completa'][#{count}]//li[@class='umidade-relativa-prev-completa list-style-none']/span[3]").text.strip},
                               :temperature                  => { :max => request.xpath("//div[@class='box-prev-completa'][#{count}]//span[@class='max']").text.strip,
                                                                  :min => request.xpath("//div[@class='box-prev-completa'][#{count}]//span[@class='min']").text.strip},
                               :uv                           => request.xpath("//div[@class='box-prev-completa'][#{count}]//p[@class='left left10 top10 paragrafo-padrao uv-size']/span[1]").text.strip,
                               :sunrise                      => request.xpath("//div[@class='box-prev-completa'][#{count}]//div[@class='por-do-sol']/span[3]").text.strip,
                               :sunset                       => request.xpath("//div[@class='box-prev-completa'][#{count}]//div[@class='por-do-sol']/span[6]").text.strip
                           }
                           
      @previsoes[count][:wind] = { :velocity  => @previsoes[count][:wind][/(\d+)/]+"km/h" ,
                                   :direction => wind[@previsoes[count][:wind].gsub("#{@previsoes[count][:wind][/(\d+)/]}km/h","")]
                                 }
      @probability_of_precipitation = @previsoes[count][:probability_of_precipitation].split('mm')                           
                                 
      @previsoes[count][:probability_of_precipitation] = { :volume     => @probability_of_precipitation[0]+"mm" ,
                                                           :percentage => @probability_of_precipitation[1]
                                                         }
       
     count+=1
   end
   
   @previsoes
   
end

#nowFromPage ⇒ Object

Returns a hash of condtions of weather from page. It’s more complete than the webservice

Example:

>> PrevisaoClimaTempo.new(:codCity => '314').nowFromPage

Arguments:



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# File 'lib/previsao-clima-tempo.rb', line 100

def nowFromPage
  request ||= requestHtml
  {
     :last_update => request.xpath("//span[@class='paragrafo-padrao']").text,
     :wind        => { :velocity  => request.xpath("//li[@class='dados-momento-li list-style-none'][4]/span[2]").text,
                       :direction => wind[request.xpath("//li[@class='dados-momento-li list-style-none'][1]/span[2]").text]
                     },
     :moisture    => request.xpath("//li[@class='dados-momento-li list-style-none'][5]/span[2]").text,
     :condition   => request.xpath("//li[@class='dados-momento-li list-style-none'][2]/span[2]").text,
     :pression    => request.xpath("//li[@class='dados-momento-li list-style-none'][3]/span[2]").text,
     :temperature => request.xpath("//span[@class='left temp-momento top10']").text
  }
end

#tomorrow ⇒ Object

Returns an object with the conditions of weather next day from webservice

Example:

>> PrevisaoClimaTempo.new(:codCity => '314').tomorrow

Arguments:



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# File 'lib/previsao-clima-tempo.rb', line 85

def tomorrow()
   
   self.day(Time.now + 1.days)
   
end

#trendsFromPage ⇒ Object

Returns a hash of condtions of weather whith 5 days from page. If today is 16-12-2013 returns 21,22,23,24,25 trends. It’s more complete than the webservice

Example:

>> PrevisaoClimaTempo.new(:codCity => '314').trendsFromPage

Arguments:



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# File 'lib/previsao-clima-tempo.rb', line 171

def trendsFromPage
  
  request ||= requestHtml
   
  @previsoes = Hash.new
  count = 1
     
  until count > 5 do
      @previsoes[count] = {
                               :date                         => request.xpath("//div[@class='box-prev-tendencia'][#{count}]//span[@class='data-prev']").text.strip+"/"+Time.now().year.to_s,
                               :condition                    => request.xpath("//div[@class='box-prev-tendencia'][#{count}]//div[@class='frase-previsao-prev-tendencia']").text.strip,
                               :probability_of_precipitation => request.xpath("//div[@class='box-prev-completa'][#{count}]//li[@class='prob-chuva-prev-completa list-style-none']/span[2]").text.strip,
                               :temperature                  => { :max => request.xpath("//div[@class='box-prev-tendencia'][#{count}]//span[@class='max']").text.strip,
                                                                  :min => request.xpath("//div[@class='box-prev-tendencia'][#{count}]//span[@class='min']").text.strip}
                           }
                                 
      @probability_of_precipitation = @previsoes[count][:probability_of_precipitation].split('mm')                           
                                 
      @previsoes[count][:probability_of_precipitation] = { :volume     => @probability_of_precipitation[0]+"mm" ,
                                                           :percentage => @probability_of_precipitation[1]
                                                         }
      count+=1
   end
   
   @previsoes
   
end