added customer and orderprocessor files

001-Labwork/lib/customer.rb

@@ -0,0 +1,47 @@
+class Customer
+  attr_reader :first_name, :last_name, :available_credit, :date_of_birth
+  attr_reader :purchases
+
+  def initialize first_name, last_name, date_of_birth, available_credit
+    @first_name = first_name
+    @last_name = last_name
+    @available_credit = available_credit
+    @date_of_birth = date_of_birth
+    @purchases = []
+  end
+
+  def full_name
+    "#{first_name} #{last_name}"
+  end
+
+  def age
+    Time.now.year - @date_of_birth.year
+  end
+
+  def use_credit(amount)
+    if @available_credit >= amount
+      @available_credit-=amount
+      true
+    else
+      false
+    end
+  end
+
+  def attempt_credit_purchase (amount, description)
+    if use_credit amount
+
+      # TODO: Ooops I forgot to store the item description in an array for the customer!
+      # You'll need to initialize the purchases array in the initialize method or
+      # check it here, how will I do this once Customer is a Class?
+      @purchases.push description
+
+      "APPROVED: $#{'%.2f' % amount} #{description}"
+    else
+      "DECLINED: $#{'%.2f' % amount} #{description} Purchase! Only $#{'%.2f' % available_credit} credit available"
+    end
+  end
+
+  def purchase_history
+    return @purchases.join "\\n"
+  end
+end

001-Labwork/lib/orderprocessor.rb

@@ -0,0 +1,29 @@
+module OrderProcessor
+
+  def self.processOrder (customer, items)
+    receipt = []
+    receipt.push '=' * 80
+    receipt.push "\nOrder Receipt"
+    receipt.push '-------------'
+    receipt.push "Customer name:                     #{customer.full_name}"
+    receipt.push "Customer age:                      #{customer.age}"
+    receipt.push "Customer's opening credit limit:  $#{'%.2f' % customer.available_credit}"
+
+
+    receipt.push "\nItems Requested"
+    receipt.push '---------------'
+    items.each do |item|
+      receipt.push customer.attempt_credit_purchase(item[:price], item[:description])
+    end
+
+    receipt.push "\nCustomer's closing credit limit is  $#{'%.2f' % customer.available_credit}"
+    receipt.push "\nPurchase History"
+    receipt.push '----------------'
+    receipt.push customer.purchase_history
+    receipt.push ""
+    receipt.push '=' * 80
+
+    receipt.join("\n")
+  end
+
+end