examplerubystuff.rb

class Cli

  def run

    # get the hash of fish data by scrapping the website (see further below)
    fish_hash = self.get_fish_hash

    # CLI stays in loop until user types quit
    is_cli_active = true
    while is_cli_active

      # now show user the options that are available for them to choose from
      self.show_user_options(fish_hash)

      # now wait for the user to enter something
      option = gets.strip

      # this is just for debugging purposes and can be removed once program working
      puts "option is #{option}"
      
      # finally we show the user what they want depending on the option,
      # the CLI may or may not be active anymore (if not, loop will break)
      is_cli_active = handle_user_option(option, fish_hash)
    end
  end

  def get_fish_hash
    fish_hash = {}

    # first get the html and parse it for the main fish div, Basics-Graphics-Frame
    html = open('http://www.eregulations.com/massachusetts/fishing/saltwater/commonly-caught-species/')
    doc = Nokogiri::HTML(html)
    fishes = doc.css(".Basic-Graphics-Frame")

    # now loop through each fish and pull out the fish name and description
    fishes.each do |fish|

      # the fish name is the h3 right under the .Basics-Graphics-Frame
      fish_name = fish.css('h3').text

      # check if nil or empty because we pick up some garbage
      is_fish_name_empty = fish_name.to_s.empty?
      if !is_fish_name_empty

        # there are a lot of p tags under .Basics-Graphics-Frame; get all of them
        all_p_tags_under_fish = fish.css('p')

        # the first one is the description
        fish_description = all_p_tags_under_fish[0].text

        # the second one is always the location
        fish_location = all_p_tags_under_fish[1].text.sub('Location: ', '')

        # for now we are just adding to the has the name of the fish as the key
        # and the description as the value
        fish_hash[fish_name] = fish_description
      end
    end

    # finall return the hash to the main function
    fish_hash
  end

  def show_user_options(fish_hash)
    puts "\nDid you catch a fish off the coast of New England? What type do you think?"
    puts "Please pick from this commonly caught list:\n\n"
    puts fish_hash.keys.join(', ')
    puts "\nType in the name of the fish or type quit"
  end

  def handle_user_option(option, fish_hash)

    # if what the user typed in is a key in the hash, then show them the desc
    if fish_hash.key?(option)
      puts "Here is the description: #{fish_hash[option]}"
      true

    # else if the user typed in quit, then say goodbye and return false, so
    # loop will break and program will end
    elsif option == 'quit'
      puts "OK, goodbye"
      false

    # else some other invalid input, tell user to try again
    else
      puts "Sorry, invalid option. Try again"
      true
    end
  end

end