class CLI
  INTRO_MESSAGE = "WELCOME TO CRAIGSLIST SCRAPPER!"

  def run
    @scrape = CraigsList.new
     puts INTRO_MESSAGE
    choice = ""
    while choice != "exit"      
      choice = display_main_menu
      if choice == "scrape"
        get_menu_input
        create_items_from_array(scrape_apple_prodcuts)
        grab_apple_prodcuts
      end
    end
  end
    
  
  def display_main_menu
    stars = "************************".colorize(:yellow)
    puts "#{stars} MAIN MENU #{stars}" 
    puts "Enter \"scrape\" to scrape.".colorize(:blue)
    puts "Enter \"exit\" to end program.".colorize(:yellow)
    puts "What would you like to do?".colorize(:blue)
    gets.chomp
  end

  def get_menu_input
    display_states
    puts "Please enter a number for the state you'd like to scrape.".colorize(:green)
    #convert number input from user
    @state_scraped = convert_to_state(gets.chomp)
    display_cities(@state_scraped)
    puts "Please enter a number for the city you'd like to scrape.".colorize(:green)
    @city_scraped = convert_to_city(@state_scraped, gets.chomp)
    puts "You have chosen the state of #{@state_scraped}, and the city of #{@city_scraped.capitalize}."
  end

  def display_states
    @scrape.get_states_names.each_with_index do |state, index|
      print "#{index + 1}. #{state}    ".ljust(28) 
      if (index + 1) % 5 == 0
        print "\n"
      end
    end
    print "\n"
  end 

  def display_cities(state)
    @state_cities = @scrape.get_state_cities(state)
    #find max length of city and use it left justify everything else for screen output
    max_length = @state_cities.map(&:length).max
    @state_cities.each_with_index do |city, index|
      print "#{index + 1}. #{city.capitalize.ljust(max_length)}   " 
      if (index + 1) % 3 == 0
        print "\n"
      end
    end
    print "\n"
  end

  def convert_to_state(state_number)
    #it takes in a number and returns the corresponding state's name
    @scrape.get_states_names[state_number.to_i - 1]
  end

  def convert_to_city(state, city_number)
    #it takes in a number and returns the corresponding city's name
      @state_cities[city_number.to_i - 1] 
  end 

  def scrape_apple_prodcuts
    @scraped_city_url = @scrape.return_city_link(@state_scraped, @city_scraped)
    @phones = @scrape.scrape_by_city_url(@scraped_city_url)
  end

  def grab_apple_prodcuts
    puts "Price enter a price higher than 150 to see the list of phones, defualt price is 150.".colorize(:blue)
    display_apple_products_info(@city.get_apple_prods_by_price(gets.chomp))
  end

  def get_choice
    puts "Enter number to see link phone on browser.".colorize(:cyan)
    puts "next for more phones".colorize(:green)
    puts "Or enter exit to re-scrape.".colorize(:blue)
    gets.chomp
  end

end