Class: Lakes::Texas::WaterConditionsParser

Inherits:
Object
  • Object
show all
Includes:
Helper
Defined in:
lib/lakes/texas/water_conditions_parser.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helper

#cleanup_data, #cleanup_raw_text, #convert_relative_href, #http_get

Constructor Details

#initialize(text) ⇒ WaterConditionsParser

Returns a new instance of WaterConditionsParser.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 14

def initialize(text)
  return if text.nil?
  @raw_text = text
  @raw_text_without_whitespace = text.gsub(/[\t\r\n\f]+/, '').gsub(/\s\s/, ' ')
  parse
end

Instance Attribute Details

#conservation_pool_elevation ⇒ Object (readonly)

Returns the value of attribute conservation_pool_elevation.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 9

def conservation_pool_elevation
  @conservation_pool_elevation
end

#conservation_pool_elevation_in_ft_msl ⇒ Object (readonly)

Returns the value of attribute conservation_pool_elevation_in_ft_msl.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 10

def conservation_pool_elevation_in_ft_msl
  @conservation_pool_elevation_in_ft_msl
end

#conservation_pool_elevation_raw_text ⇒ Object (readonly)

Returns the value of attribute conservation_pool_elevation_raw_text.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 9

def conservation_pool_elevation_raw_text
  @conservation_pool_elevation_raw_text
end

#fluctuation ⇒ Object (readonly)

Returns the value of attribute fluctuation.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 11

def fluctuation
  @fluctuation
end

#fluctuation_raw_text ⇒ Object (readonly)

Returns the value of attribute fluctuation_raw_text.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 11

def fluctuation_raw_text
  @fluctuation_raw_text
end

#normal_clarity ⇒ Object (readonly)

Returns the value of attribute normal_clarity.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 12

def normal_clarity
  @normal_clarity
end

#normal_clarity_raw_text ⇒ Object (readonly)

Returns the value of attribute normal_clarity_raw_text.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 12

def normal_clarity_raw_text
  @normal_clarity_raw_text
end

#raw_text ⇒ Object (readonly)

Returns the value of attribute raw_text.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 7

def raw_text
  @raw_text
end

#raw_text_without_whitespace ⇒ Object (readonly)

Returns the value of attribute raw_text_without_whitespace.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 7

def raw_text_without_whitespace
  @raw_text_without_whitespace
end

#water_data_uri ⇒ Object (readonly)

Returns the value of attribute water_data_uri.



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 8

def water_data_uri
  @water_data_uri
end

Instance Method Details

#parse ⇒ Object

<a href=“waterdatafortexas.org/reservoirs/individual/belton”>Current Lake Level</a> Conservation Pool Elevation: 594 ft. msl Fluctuation: 3-5 feet Normal Clarity: Moderate



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# File 'lib/lakes/texas/water_conditions_parser.rb', line 25

def parse
  html_doc = Nokogiri::HTML.fragment(@raw_text)

  html_doc_without_whitespace_chars = Nokogiri::HTML.fragment(raw_text_without_whitespace)
  water_data_link = html_doc_without_whitespace_chars.xpath('p/a[contains(text(), "Current Lake Level")]').first
  @water_data_uri = water_data_link.try(:[], 'href')
  if @water_data_uri && @water_data_uri.start_with?('http://')
    @water_data_uri.gsub!('http://', 'https://')
  end

  text_doc = html_doc.text
  text_doc_without_whitespace = html_doc_without_whitespace_chars.text

  # so many inconsistencies in the data
  @conservation_pool_elevation_raw_text = text_doc
    .match(/(Conservation Pool Elevation:(.*))|(Normal water level:(.*))/i)
    .try(:captures)
    .try(:compact)
    .try(:[], 1)

  @conservation_pool_elevation = cleanup_raw_text(
    @conservation_pool_elevation_raw_text
  )

  @fluctuation_raw_text = text_doc.match(/Fluctuation: (.*)Normal Clarity:/im).try(:captures).try(:first)
  @fluctuation = cleanup_raw_text(@fluctuation_raw_text)

  @normal_clarity_raw_text = text_doc_without_whitespace.match(/Normal Clarity: (.*)/i).try(:captures).try(:first)
  @normal_clarity = cleanup_raw_text(@normal_clarity_raw_text)
end