# Build a CheckSplitter class.
class CheckSplitter
  # total_cost_of_meal  - integer
  # tip_percentage - integer
  # num_people - integer
  def initialize(total_cost_of_meal, tip_percentage = 0.15, num_people = 1)
    @total_cost_of_meal = total_cost_of_meal
    @tip_percentage = tip_percentage
    @num_people = num_people
  end

  #determine how much each person owes
  #return a decimal value for how much each person owes
  def even_split
    meal_plus_tip / @num_people
  end

  def meal_plus_tip
    @total_cost_of_meal + tip_amount
  end

  def tip_amount
    @total_cost_of_meal * tip_as_decimal
  end

  def tip_as_decimal
    @tip_percentage / 100.0
  end
end


# Add a `DinnerClub` class.
require_relative "checksplitter.rb"
# members - hash with key: member name and value: tally of meal costs
class DinnerClub
  # member_names - array containing member names
  def initialize(member_names)
    @members = {}
    @history = {}

    member_names.each do |name|
      @members[name] = 0
    end
  end
  # some members go out to eat
  #
  # meal_cost - integer meal cost
  # tip_percent - integer tip amount
  # attendees - array of names for members who attended the outing
  def go_out(one_guest_pays, paying_guest, meal_cost, tip_percent, attendees)
    cs = CheckSplitter.new(meal_cost, tip_percent, attendees.length)

    amount_per_person = cs.even_split
    treat = cs.meal_plus_tip

    case one_guest_pays
    when "no"
      @members[paying_guest] += treat
    when "yes"
    attendees.each do |n|
      @members[n] += amount_per_person
    end
  end
    @members
  end
  # creates a hash with restaurant names and corresponding attendees
  def history(restaurant, attendees)
    @history[restaurant] = attendees
  end
end


require_relative "dinnerclub.rb"

puts "Who is in the dinner club?"
people = gets.chomp

dc = DinnerClub.new(people.split(", "))

puts "Go out to eat? (yes/no)"
action = gets.chomp

while action.downcase != "no" do
  puts "Where did you go?"
  restaurant = gets.chomp

  puts "Meal cost:"
  meal_cost = gets.to_i

  puts "Tip percentage:"
  tip_percent = gets.to_i

  puts "Who attended?"
  attendees = gets.chomp

  puts "Is the bill being split evenly? (yes/no)"
  one_guest_pays = gets.chomp

  if one_guest_pays.downcase == "no"
    puts "Who is paying the bill?"
    paying_guest = gets.chomp
  end

  attendees_to_array = attendees.split(", ")

  puts dc.go_out(one_guest_pays, paying_guest, meal_cost, tip_percent, attendees_to_array)
  puts "Again? (yes/no)"
  action = gets.chomp

  dc.history(restaurant, attendees)
  puts dc.inspect
end