Simple todo app for Fay

just_do_it

class TodoApp
  attr_accessor :todos

  def initialize
    @todos = []
  end

  def start
    puts "Hi there! Welcome to Just Do It!"

    choose_mode
  end

  def choose_mode
    puts "Would you like to create, list, or delete a todo?"

    choice = gets.downcase.chomp
    while not valid_choice(choice)
      puts "Sorry, that isn't a valid choice. Please type either 'create' or 'delete' or 'list'."
      choice = gets.downcase.chomp
    end

    if choice == "create"
      create_mode
    elsif choice == "delete"
      delete_mode
    else
      list_mode
    end
  end

  def create_mode
    puts "What do you need to do?"
    choice = gets.chomp

    while choice != "stop"
      add(choice)
      print_todos
      puts "Great, enter another or type 'stop' to finish creating todos"
      choice = gets.chomp
    end

    choose_mode
  end

  def delete_mode
    print_todos
    puts "Which # would you like to delete? Or type 'stop' to go back to the main menu."

    choice = gets.chomp
    choose_mode if choice == 'stop'

    choice = choice.to_i

    if choice > 0 && choice <= @todos.length
      @todos.delete_at(choice - 1)
      puts "DELETED!"
      print_todos
      delete_mode
    else
      puts "Sorry, that isn't a valid todo number. Try again!"
      delete_mode
    end
  end

  def print_todos
    puts "Stuff to do:"
    puts "---------------------------------"
    @todos.each_with_index do |todo, index|
      puts "#{index + 1}.   #{todo}"
    end
    puts "---------------------------------"
  end

  def list_mode
    print_todos
    choose_mode
  end

  def add(todo)
    @todos << todo
  end

  def valid_choice(choice)
    return true if ["create", "list", "delete"].include? choice
    false
  end
end

app = TodoApp.new
app.start