Class: CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/top_100/cli.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/top_100/cli.rb', line 5

def initialize
  @tracker = 0
  BillboardScraper.scrape_from_chart_page
end

Instance Attribute Details

#tracker ⇒ Object

Returns the value of attribute tracker.



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# File 'lib/top_100/cli.rb', line 2

def tracker
  @tracker
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/top_100/cli.rb', line 10

def call
  puts "Welcome to the Billboard Hot 100. Now outputting the top twenty songs..."
  display_chart
  present_options
end

#display_artist(name) ⇒ Object 



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# File 'lib/top_100/cli.rb', line 27

def display_artist(name)
  artist = Artist.find_or_create(name)
  artist.name == nil ? puts("Artist not found.") : artist.display_details
  puts "--------------------------------"
end

#display_chart ⇒ Object 



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# File 'lib/top_100/cli.rb', line 16

def display_chart
  if self.tracker >= 100
    puts "There are no more songs to display."
  else
    20.times do
      Song.all[self.tracker].display
      self.tracker += 1
    end
  end
end

#present_options ⇒ Object 



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# File 'lib/top_100/cli.rb', line 33

def present_options
  puts "Options: 1. type in 'exit' to exit. 2. type in 'next' for the next twenty songs. 3. type 'song' to play a song sample. 4. type in the full artist title of a song to learn more about the main artist."
  choice = gets.chomp
  case choice
  when 'exit'
    puts "Now exiting..."
  when 'next'
    display_chart
    present_options
  when 'song'
    puts "Enter the chart number of the song you would like to play."
    rank = gets.chomp
    Song.play(rank)
    present_options
  else
    begin
      display_artist(choice)
      # catches issues using OpenURI to access certain artist pages or issues with making frequent requests
      rescue OpenURI::HTTPError => error
        puts "Sorry, we're having trouble displaying this artist's details."
    end
    present_options
  end
end