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class Movie
REGULAR = 0
NEW_RELEASE = 1
CHILDRENS = 2
attr_reader :title
attr_accessor :price_code
def initialize(title, price_code)
@title, @price_code = title, price_code
end
end
class Rental
attr_reader :movie, :days_rented
def initialize(movie, days_rented)
@movie, @days_rented = movie, days_rented
end
end
class Customer
attr_reader :name
def initialize(name)
@name = name
@rentals = []
end
def add_rental(arg)
@rentals << arg
end
def statement
total_amount, frequent_renter_points = 0, 0
result = "Rental Record for #{@name}\n"
@rentals.each do |element|
this_amount = 0
# determine amounts for each line
case element.movie.price_code
when Movie::REGULAR
this_amount += 2
this_amount += (element.days_rented - 2) * 1.5 if element.days_rented > 2
when Movie::NEW_RELEASE
this_amount += element.days_rented * 3
when Movie::CHILDRENS
this_amount += 1.5
this_amount += (element.days_rented - 3) * 1.5 if element.days_rented > 3
end
# add frequent renter points
frequent_renter_points += 1
# add bonus for a two day new release rental
if element.movie.price_code == Movie.NEW_RELEASE && element.days_rented > 1
frequent_renter_points += 1
end
# show figures for this rental
result += "\t" + element.movie.title + "\t" + this_amount.to_s + "\n"
total_amount += this_amount
end
# add footer lines
result += "Amount owed is #{total_amount}\n"
result += "You earned #{frequent_renter_points} frequent renter points"
result
end
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