Class: Whatsa::CLI

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

Instance Method Summary collapse

Instance Method Details

#ask ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 18

def ask
  puts "What would you like to know about?"
  gets_command
end

#categories(article) ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 117

def categories(article)
  display_sections(article)
  choice = gets_command
  section = article.choose_section(choice)
  summarize(section)
end

#display_dmb(dmb) ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/whatsa/cli.rb', line 59

def display_dmb(dmb)
  raise TypeError unless dmb.is_a?(Whatsa::Disambig)
  system("clear")
  stripped_title = dmb.title.gsub("(disambiguation)", "").strip
  puts "Hmmm... #{stripped_title} could mean a few different things:\n"
  dmb.descriptions.each_with_index do |kvp, i|
    puts "#{i + 1}. #{kvp[0].to_s} (#{kvp[1]})"
  end
  puts "\nPlease select a choice, either by name or number."
end

#display_sections(text) ⇒ Object 



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

def display_sections(text)
  text = text.article if text.is_a?(Whatsa::Section)
  system("clear")
  puts "Here are some specific subjects about '#{text.title}':\n"
  text.section_titles.each_with_index {|title, i| puts "#{i + 1}. #{title}"}
  puts "\nPlease select a choice, either by name or number."
end

#full(text) ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 110

def full(text)
  system("clear")
  puts word_wrap(text.full_text)
  full_text_helpline
  gets_command
end

#full_text_helpline ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 85

def full_text_helpline
  puts "   _______________________________________________________________"
  puts "    (type 'other' if you'd like to select a specific category of"
  puts " information on the topic, or 'new' to find out about something else)"
end

#get_dmb_choice(disambig) ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 91

def get_dmb_choice(disambig)
  display_dmb(disambig)
  choice = nil
  loop do
    choice = gets_command
    in_choices = disambig.choices.detect { |c| c.downcase == choice.downcase }
    break if in_choices || choice.to_i > 0
  end
  disambig.choose_article(choice)
end

#gets_command ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 23

def gets_command
  input = nil
  loop do
    print "> "
    input = gets.strip
    case input
    when ""
      puts "Please enter a valid input."
    when "exit"
      exit
    when "help"
      instructions
    when "new"
      run
    else
      break
    end
  end
  input
end

#instructions ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 9

def instructions
  puts "Enter a word (or phrase) to get a brief summary of that subject."
  puts "If you aren't satisfied, type 'more' to get a slightly longer"
  puts "description, or type 'other' to get a list of specific categories"
  puts "regarding that subject, which you can choose by number or name."
  puts "You can type 'exit' to close the program (or 'help' to receive"
  puts "these instructions again) at any time!"
end

#run ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 124

def run
  welcome
  instructions

  loop do
    # get a search term
    input = ask
    scraper = Whatsa::Scraper.new(input)

    # get an article from the search, or restart the loop if it can't be found
    if scraper.not_found?
      puts "Hmmm... I don't know what '#{input}' means! Try something else."
      next
    elsif scraper.disambig?
      article = get_dmb_choice(scraper.make_disambig)
    else
      article = scraper.make_article
    end

    # summarize that article
    input = summarize(article)

    # the only valid input here that would go uncaught is "other", so
    # keep asking until you get a caught input (logic determined by
    # #gets_command, e.g. "help", "exit", "new") or "other"
    loop { input = input.downcase == "other" ? categories(article) : gets_command }
  end
end

#summarize(text) ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 102

def summarize(text)
  system("clear")
  puts word_wrap(text.summary)
  summary_helpline
  input = gets_command
  input.downcase == "more" ? full(text) : input
end

#summary_helpline ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 78

def summary_helpline
  puts "   _______________________________________________________________"
  puts "   (type 'more' for a potentially longer summary, 'other' if you'd"
  puts "   like to select a specific category of information on the topic,"
  puts "             or 'new' to find out about something else)"
end

#welcome ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 3

def welcome
  system('clear')
  puts "Whatsa is a quick-and-dirty lookup utility, powered by Wikipedia!"
  puts "-----------------------------------------------------------------"
end

#word_wrap(text) ⇒ Object 



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# File 'lib/whatsa/cli.rb', line 44

def word_wrap(text)
  count = 0
  words = text.split(/ /)
  words.each_with_index do |word, index|
    count += word.length + 1
    if count > 80
      words.insert(index, "\n")
      count = 0
    elsif word.index("\n")
      count = word.length
    end
  end
  words.join(" ").gsub(/^ /, "")
end