tossr/tossr

#! /usr/bin/env ruby

# This module contains classes describing salads and ingredients
module Salads

    # A class to describe a basic ingredient
    class Ingredient

        # @name is a string
        attr_accessor :name
        # @price is a float
        attr_accessor :price

        # ==== Parameters
        #
        # * +name+ - string, the name of the ingredient, e.g. bacon
        # * +price+ - float, the price of the ingredient, e.g. 1.50
        #
        def initialize(name ,price)
            @name = name
            @price = price
        end
    end


    # A container type class for composing a salad
    class Salad

        # @ingredients is an Array with ingredients
        attr_accessor :ingredients
        # @vegetarian is a boolean tag for whether the salad is vegetarian or not
        attr_accessor :vegetarian
        # @dressing is an Array of dressings
        attr_accessor :dressing

        # ==== Parameters
        #
        # * +base_price+ - the base price for the salad
        #
        def initialize (base_price)
            @base = base_price
            @ingredients = Array.new
            @vegetarian = true
            @dressing = Array.new
        end

        # Add an ingredient to salad
        #
        # ==== Parameters
        #
        # * +ingredient+ - an Ingredient object
        # * +meat+ - boolean tag, is ingredient a meat
        def add_ingredient(ingredient, meat=false)
            if meat
                @vegetarian = false
            end
            @ingredients.push(ingredient)
        end

        # Add a dressing to salad
        #
        # ==== Parameters
        #
        # * +dressing+ - an Ingredient coresponding to a dressing
        def add_dressing(dressing)
            @dressing.push(dressing)
        end

        # Add an Array of Ingredients to salad
        #
        # ==== Parameters
        #
        # * +ingredients+ - an Array of Ingredient objects
        # * +meat+ - boolean tag, is ingredient a meat
        def add_ingredients(ingredient_list, meat=false)
            if meat
                @vegetarian = false
            end
            ingredient_list.each {|ingredient| self.add_ingredient(ingredient)}
        end

        # Calculate the price of the salad
        #
        # ==== Returns
        # A float containing the total price
        #
        def price
            total = @base
            @ingredients.each { |ingredient| total += ingredient.price }
            @dressing.each_with_index { |dressing,index| index > 0 ? total += dressing.price : next }
            return total
        end

        # Returns a representation of the salad
        #
        # ==== Returns
        #
        # A string representing all the ingredients of the salad and the prices
        def inspect
            # Representation of Salad object
            repres = "Salad_ID = #{self.object_id}\n"
            repres += "==============\nDressing:\n------------\n"
            @dressing.each_with_index {|dressing,index| repres += "#{dressing.name}: #{index > 0.00 ? format("%.2f", dressing.price) : "0.00"} \n"}
            repres += "\nIngredients:\n--------------\n"
            @ingredients.each {|ingredient| repres += "#{ingredient.name}: #{format("%.2f",ingredient.price)}\n"}
            repres += "\n==============\n"
            repres += "Base price: #{format("%.2f",@base)}\n"
            repres += "Total : #{format("%.2f",self.price)}"
            return repres
        end
    end

end