Class: AirQualityIndex::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/air_quality_index/cli.rb

Instance Method Summary collapse

Instance Method Details

#call ⇒ Object

instantiates a new CLI instance for the program



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# File 'lib/air_quality_index/cli.rb', line 4

def call

  puts ''
  puts "Welcome to Air Quality Index (AQI) Grabber"
  puts ''

  self.list_options
  self.menu

end

#data_unavailable_message ⇒ Object

data unavailability message if hours between midnight and 4am EST



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# File 'lib/air_quality_index/cli.rb', line 82

def data_unavailable_message
  puts ''
  puts 'Updates for current conditions are not available between 12:00 a.m. and 4:00a.m. EST.'
end

#list_options ⇒ Object

lists menu options for user to select from



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# File 'lib/air_quality_index/cli.rb', line 16

def list_options
  puts <<-DOC.gsub /^\s*/, ''

  1. Local AQI Information
  2. Top 5 Nationwide AQI Rankings
  3. General AQI Information

  DOC
end

#menu ⇒ Object

grabs user selection from menu and instantiates appropriate method based on that selection



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# File 'lib/air_quality_index/cli.rb', line 27

def menu

  puts ''
  puts "Please enter a numeric selection (1-3), or type exit."
  puts ''

  user_input = nil

  while user_input != 'exit'

    #gets user input
    user_input = gets.strip.downcase
    #based on user input, call appropriate class method
    case user_input
    when '1'
      if self.time_check
        puts data_unavailable_message
      else
        AirQualityIndex::LocalAQI.new.call_from_zip_code
      end
      self.return_message
    when '2'
      if self.time_check
        puts data_unavailable_message
      else
        AirQualityIndex::NationwideAQI.new.call
      end
      self.return_message
    when '3'
      AirQualityIndex::AQI_Information.new.call
      self.return_message
    when 'return'
      self.list_options
      self.menu
    when 'exit'
      exit!
    else
      puts "I'm sorry. I didn't understand what you meant. Please enter a numeric selection (1-3), or type exit."
    end
  end
end

#return_message ⇒ Object

return message displayed after each menu selection call



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# File 'lib/air_quality_index/cli.rb', line 70

def return_message
  puts "Type 'return' to go back to previous menu, or type 'exit'."
  puts ""
end

#time_check ⇒ Object

check to see if current time is between midnight and 4am EST (Data Unavailable During This Time)



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# File 'lib/air_quality_index/cli.rb', line 76

def time_check
  time =  Time.now.getlocal('-04:00')
  time.hour.between?(0,4)
end