diff --git a/lib/attendee.rb b/lib/attendee.rb
index 690e5c9..bd9bca4 100644
--- a/lib/attendee.rb
+++ b/lib/attendee.rb
@@ -1,8 +1,21 @@
 class Attendee
-    attr_reader :name, :budget, :items
+    attr_reader :name, :budget
     
     def initialize(info)
         @name = info[:name]
-        @budget = info[:budget]
+        @budget = info[:budget].delete("$").to_i
+        bidding_open = true
+    end
+
+    def add_bid(attendee, amount)
+        @bids[attendee] = amount if @bidding_open
+    end
+
+    def current_high_bid
+        @bids.values.max
+    end
+
+    def closed_bidding
+        @bidding_open = false
     end
 end
\ No newline at end of file
diff --git a/lib/auction.rb b/lib/auction.rb
index 4d53f20..6effd5c 100644
--- a/lib/auction.rb
+++ b/lib/auction.rb
@@ -1,3 +1,5 @@
+require 'date'
+
 class Auction
     attr_reader :items
 
@@ -6,10 +8,37 @@ def initialize
     end
 
     def add_item(item)
-        @items.unshift(item)
+        @items << item 
     end
 
     def item_names
-        raise NotImplementedError
+        @items.map(&:name)
+    end
+
+    def unpopular_items
+        @items.select { |item| item.bids.empty? }
+    end
+
+    def potential_revenue
+        @items.sum { |item| item.current_highest_bid.to_i }
+    end
+
+    def bidders
+        @items.map { |item| item.bids.keys.map(&:name) }.flatten.uniq
+    end
+
+    def bidder_info
+        info = Hash.new { |hash, key| hash[key] = { budget: key.budget, items: [] } }
+    
+        @items.each do |item|
+          item.bids.each_key do |attendee|
+                info[attendee][:items] << item
+          end
+        end
+        info
+    end
+
+    def date
+        Date.today.strftime("%d/%m/%Y")
     end
 end
\ No newline at end of file
diff --git a/lib/item.rb b/lib/item.rb
index e198fd3..98f531a 100644
--- a/lib/item.rb
+++ b/lib/item.rb
@@ -1,7 +1,29 @@
-class Items
-    attr_reader :name
+class Item
+    attr_reader :name, :bids
      
     def initialize(name)
-        @name = "Chalkware Piggy Bank"
+        @name = name
+        @bids = {}    
+        @bidding_open = true
+    end
+
+    def add_bid(attendee, amount)
+        @bids[attendee] = amount
+    end
+
+    def current_highest_bid
+        @bids.values.max
+    end
+
+    def add_bid(attendee, amount)
+        @bids[attendee] = amount if @bidding_open
+    end
+
+    def current_high_bid
+        @bids.values.max
+    end
+
+    def closed_bidding
+        @bidding_open = false
     end
 end
\ No newline at end of file
diff --git a/spec/auction_spec.rb b/spec/auction_spec.rb
index 31d12e0..b001597 100644
--- a/spec/auction_spec.rb
+++ b/spec/auction_spec.rb
@@ -1,18 +1,26 @@
 require './lib/item'
+require './lib/attendee'
 require './lib/auction'
+require 'date'
 
 RSpec.describe Auction do
     before(:each) do 
         @item1 = Item.new('Chalkware Piggy Bank')
         @item2 = Item.new('Bamboo Picture Frame')
+        @item3 = Item.new('Homemade Chocolate Chip Cookies')
+        @item4 = Item.new('2 Days Dogsitting')
+        @item5 = Item.new('Forever Stamps')
         @auction = Auction.new
+        @attendee1 = Attendee.new({ name: 'Megan', budget: '$50' })
+        @attendee2 = Attendee.new({ name: 'Bob', budget: '$75' })
+        @attendee3 = Attendee.new({ name: 'Mike', budget: '$100' })
     end
 
     it 'exists' do 
         expect(@auction).to be_a(Auction)
     end
 
-    it 'has attributes' do
+    it 'has empty attributes' do
         expect(@auction.items).to eq([])
     end
 
@@ -27,6 +35,81 @@
         @auction.add_item(@item1)
         @auction.add_item(@item2)
 
-        expect(@auction.item_names).to eq(["Chalkware Piggy Bank", "Bamboo Picture Frame"])
+        expect(@auction.item_names).to eq([
+            "Chalkware Piggy Bank", 
+            "Bamboo Picture Frame",       
+        ])
     end
+
+    it 'identifies (unpopular_items) - items with no bids' do
+        @auction.add_item(@item1)
+        @auction.add_item(@item2)
+        @auction.add_item(@item3)
+        @auction.add_item(@item4)
+        @auction.add_item(@item5)
+
+        @item1.add_bid(@attendee1, 20)
+            expect(@auction.unpopular_items).to eq([@item2, @item3, @item4, @item5])
+
+        @item2.add_bid(@attendee2, 15)
+            expect(@auction.unpopular_items).to eq([@item3, @item4, @item5])
+    end
+
+    it 'calculates (potential revenue) - highest bids' do
+        @auction.add_item(@item1)
+        @auction.add_item(@item2)
+        @auction.add_item(@item3)
+        @auction.add_item(@item4)
+        @auction.add_item(@item5)
+
+        @item1.add_bid(@attendee2, 20)
+        @item1.add_bid(@attendee1, 22)
+            expect(@auction.unpopular_items).to eq([@item2, @item3, @item4, @item5])
+
+        @item4.add_bid(@attendee3, 50)
+            expect(@auction.unpopular_items).to eq([@item2, @item3, @item5])
+
+        @item3.add_bid(@attendee2, 15)
+            expect(@auction.unpopular_items).to eq([@item2, @item5])
+
+        expect(@auction.potential_revenue).to eq(87)  # 22 (item1 - highest bid) + 15 (item3) + 50 (item4)
+    end
+
+    it 'returns array of bidders names as string' do
+        @auction.add_item(@item1)
+        @auction.add_item(@item2)
+
+        @item1.add_bid(@attendee1, 20)
+        @item1.add_bid(@attendee2, 30)
+        @item2.add_bid(@attendee3, 15)
+
+        expect(@auction.bidders).to eq(["Megan", "Bob", "Mike"])
+    end
+
+    it 'returns bidder_info with hash value' do
+        @auction.add_item(@item1)
+        @auction.add_item(@item2)
+        @auction.add_item(@item3)
+    
+        @item1.add_bid(@attendee1, 20)
+        @item1.add_bid(@attendee2, 30)
+        @item2.add_bid(@attendee2, 25)
+        @item3.add_bid(@attendee3, 15)
+    
+        expected_info = {
+            @attendee1 => { budget: 50, items: [@item1] },
+            @attendee2 => { budget: 75, items: [@item1, @item2] },
+            @attendee3 => { budget: 100, items: [@item3] }
+        }
+    
+        expect(@auction.bidder_info).to eq(expected_info)
+    end
+
+    it 'has date for auction' do
+        allow(Date).to receive(:today).and_return(Date.new(2020, 2, 24))
+
+        auction_date = Auction.new
+        expect(auction_date.date).to eq("24/02/2020")
+    end
+
 end
\ No newline at end of file
diff --git a/spec/item_spec.rb b/spec/item_spec.rb
index 4073cc4..d820765 100644
--- a/spec/item_spec.rb
+++ b/spec/item_spec.rb
@@ -14,4 +14,25 @@
         expect(@item1.name).to eq("Chalkware Piggy Bank")
         expect(@item2.name).to eq("Bamboo Picture Frame")
     end
+
+    it 'can initialize bids with empty hash' do
+        expect(@item1.bids).to eq({})
+    end
+
+    it 'can add bids to return highest bids' do
+        @item1.add_bid(@attendee1, 20)
+        @item1.add_bid(@attendee1, 22)
+
+            expect(@item1.bids).to eq({ @attendee1 => 20, @attendee2 => 22})
+            expect(@item1.current_high_bid).to eq(22)
+    end
+    it 'stops accepting new bids after bidding is closed' do
+        @item1.add_bid(@attendee1, 20)
+        expect(@item1.bids).to eq({ @attendee1 => 20 })
+
+        @item1.closed_bidding
+        @item1.add_bid(@attendee2, 24)  # This bid shouldnt be added
+
+        expect(@item1.bids).to eq({ @attendee1 => 20 })
+    end
 end
\ No newline at end of file