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groceryItem.rb
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groceryItem.rb
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class GroceryItem
attr_accessor :item_name, :item_quantity, :item_price_after_discount, :item_price_before_discount
def initialize(item_name, item_quantity)
@items_details = {
"milk" => {
"unit_price" => 3.97,
"sale_unit_price" => 2.50
},
"bread" => {
"unit_price" => 2.17,
"sale_unit_price" => 2.0,
},
"apple" => {
"unit_price" => 0.89
},"banana" =>{
"unit_price" => 0.99
}
}
@item_name = item_name
@item_quantity = item_quantity
@item_price_after_discount = calculate_item_price_after_discount
@item_price_before_discount = calculate_item_price_before_discount
end
def calculate_item_price_after_discount
case @item_name
when "milk"
sale_on_quantity = 2
final_milk_price = discount_calculator(@items_details[@item_name]["unit_price"], @items_details[@item_name]["sale_unit_price"],sale_on_quantity)
return final_milk_price
when "bread"
sale_on_quantity = 3
final_bread_price = discount_calculator(@items_details[@item_name]["unit_price"], @items_details[@item_name]["sale_unit_price"],sale_on_quantity)
return final_bread_price
when "banana"
return @items_details[@item_name]["unit_price"] * @item_quantity
when "apple"
return @items_details[@item_name]["unit_price"] * @item_quantity
end
end
def calculate_item_price_before_discount
return @items_details[@item_name]["unit_price"] * @item_quantity
end
def discount_calculator(item_unit_price, item_sale_unit_price, sale_on_quantity)
item_price_after_discount = 0
if @item_quantity < sale_on_quantity
item_price_after_discount = item_unit_price * @item_quantity
return item_price_after_discount
end
if @item_quantity >= sale_on_quantity
item_price_after_discount = ((item_sale_unit_price * sale_on_quantity) * (@item_quantity / sale_on_quantity) ) + (item_unit_price * (@item_quantity % sale_on_quantity))
return item_price_after_discount
end
end
end