Auction

Instructions

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• Clone your forked repo to your computer.
• Complete the activity below.
• Push your solution to your forked repo
• Submit a pull request from your repository to this repository
  • Put your name in your PR!

Iteration 1 - Items, Attendees & Auctions

You have been provided with the tests for the interaction pattern below. To complete iteration 1, debug the given classes to make those tests pass! You should not need to update the tests, only the classes (until you get to iteration 2!)

pry(main)> require './lib/item'
#=> true
pry(main)> require './lib/auction'
#=> true
pry(main)> require './lib/attendee'
#=> true

pry(main)> item1 = Item.new('Chalkware Piggy Bank')
#=> #<Item:0x00007fbda98fa1b0 @bids={}, @name="Chalkware Piggy Bank">

pry(main)> item1.name
#=> "Chalkware Piggy Bank"

pry(main)> item2 = Item.new('Bamboo Picture Frame')
#=> #<Item:0x00007fbda91874f0 @bids={}, @name="Bamboo Picture Frame">

pry(main)> attendee = Attendee.new({name: 'Megan', budget: '$50'})
#=> #<Attendee:0x00007fbda913f038 @budget=50, @name="Megan">

pry(main)> attendee.name
#=> "Megan"

pry(main)> attendee.budget
#=> 50

pry(main)> auction = Auction.new
#=> #<Auction:0x00007fbda90f1cc0 @items=[]>

pry(main)> auction.items
#=> []

pry(main)> auction.add_item(item1)
pry(main)> auction.add_item(item2)

pry(main)> auction.items
#=> [#<Item:0x00007fbda98fa1b0 ...>, #<Item:0x00007fbda91874f0 ...>]

pry(main)> auction.item_names
#=> ["Chalkware Piggy Bank", "Bamboo Picture Frame"]

Iteration 2 - Bidding!

Use TDD to update your tests and classes to respond to the following interaction pattern.

Some notes:

• unpopular_items are those items which have no bids.
• potential_revenue is the sum of each item's highest bid.

pry(main)> require './lib/item'
#=> true

pry(main)> require './lib/auction'
#=> true

pry(main)> require './lib/attendee'
#=> true

pry(main)> item1 = Item.new('Chalkware Piggy Bank')
#=> #<Item:0x00007fdc07956ab0 @bids={}, @name="Chalkware Piggy Bank">

pry(main)> item2 = Item.new('Bamboo Picture Frame')
#=> #<Item:0x00007fdc07925280 @bids={}, @name="Bamboo Picture Frame">

pry(main)> item3 = Item.new('Homemade Chocolate Chip Cookies')
#=> #<Item:0x00007fdc071ab040 @bids={}, @name="Homemade Chocolate Chip Cookies">

pry(main)> item4 = Item.new('2 Days Dogsitting')
#=> #<Item:0x00007fdc088fb6f0 @bids={}, @name="2 Days Dogsitting">

pry(main)> item5 = Item.new('Forever Stamps')
#=> #<Item:0x00007fdc071695f0 @bids={}, @name="Forever Stamps">

pry(main)> attendee1 = Attendee.new({name: 'Megan', budget: '$50'})
#=> #<Attendee:0x00007fdc088f0e08 @budget=50, @name="Megan">

pry(main)> attendee2 = Attendee.new({name: 'Bob', budget: '$75'})
#=> #<Attendee:0x00007fdc071131c8 @budget=75, @name="Bob">

pry(main)> attendee3 = Attendee.new({name: 'Mike', budget: '$100'})
#=> #<Attendee:0x00007fdc070e2190 @budget=100, @name="Mike">

pry(main)> auction = Auction.new
#=> #<Auction:0x00007fdc0799de60 @items=[]>

pry(main)> auction.add_item(item1)

pry(main)> auction.add_item(item2)

pry(main)> auction.add_item(item3)

pry(main)> auction.add_item(item4)

pry(main)> auction.add_item(item5)

pry(main)> item1.bids
#=> {}

pry(main)> item1.add_bid(attendee2, 20)

pry(main)> item1.add_bid(attendee1, 22)

pry(main)> item1.bids
#=> {
#     #<Attendee:0x00007fdc071131c8 ...> => 20,
#     #<Attendee:0x00007fdc088f0e08 ...> => 22
#   }

pry(main)> item1.current_high_bid
#=> 22

pry(main)> item4.add_bid(attendee3, 50)

pry(main)> auction.unpopular_items
#=> [#<Item:0x00007fdc07925280 ...>, #<Item:0x00007fdc071ab040 ...>, #<Item:0x00007fdc071695f0 ...>]

pry(main)> item3.add_bid(attendee2, 15)

pry(main)> auction.unpopular_items
#=> [#<Item:0x00007fdc07925280 ...>, #<Item:0x00007fdc071695f0 ...>]

pry(main)> auction.potential_revenue
#=> 87

Iteration 3 - More bidding stuff!

Use TDD to update your tests and classes to include the following functionality. You must complete at least 2 of the 3 methods to pass. If you have time, we suggest doing all 3.

Some notes:

• bidder_info should return a hash with keys that are attendees, and values that are a hash with that attendee's budget and an array of items that attendee has bid on.
• close_bidding should update the item so that it will not accept additional bids

Class	Instance Method Name	Return Value
Auction	bidders	Array of bidders' names as String; ex: ["Megan", "Bob", "Mike"]
Auction	bidder_info	Hash with the following format: key of Attendee object pointing to a value of a Hash. The subhash should have a key of :budget as a Symbol and value of their budget as an Integer. The subhash should have a second key of :items as a Symbol with a value that is an Array of items the attendee has bid on. See example below.
Item	close_bidding	Return value of your choice; ensure it follows the spec above such that closing the bidding on an item makes it so the item will no longer accept new bids.

Example return value hash for bidder_info

 # {
 #    #<Attendee:0x00007ff177a45108 @budget=50, @name="Megan"> =>
 #      {
 #        :budget => 50,
 #        :items => [#<Item:0x00007ff17702e2a0 ...>]
 #      },
 #    #<Attendee:0x00007ff17816a4b0 @budget=75, @name="Bob"> =>
 #      {
 #        :budget => 75,
 #        :items => [#<Item:0x00007ff17702e2a0...>, #<Item:0x00007ff177ae45f0 ...>]
 #      },
 #    #<Attendee:0x00007ff177a0f5f8 @budget=100, @name="Mike"> =>
 #      {
 #        :budget => 100,
 #        :items => [#<Item:0x00007ff177a9d858...>]
 #      }
 #   }

Iteration 4 - Dates ! And closing the auction

Use TDD to update your classes to respond to the following interaction pattern. Some notes:

• An Auction will now be created with a date - whatever date the event is created on through the use of Date.today. The addition of a date to the event should NOT break any previous tests. The date method will return a string representation of the date - 'dd/mm/yyyy'. We want you to test this in with a date that is IN THE PAST. In order to test the date method in a way that will work today, tomorrow and on any date in the future, you will need to use a stub :)
• close_auction should close bidding and 'sell' items to attendees. The method will return a hash with items as the keys, and the purchaser of that item as the values. Attendees will only purchase items that they can afford (their bid is less than their current budget). If an attendee has bid on multiple items, they will purchase the items starting with the most expensive first, followed by the next most expensive, etc... while they still have enough money in their budget to pay for the item. If the highest bidder for an item does not have enough budget to pay for the item, the next highest bidder will purchase the item.

Method Name	Return Value
Auction#date	String represention of the date in the "dd/mm/yyyy" format. Ex: "24/02/2020"
Auction#close_auction	Hash with each Item object as a key pointing to a value of the Attendee object who won the item. Ensure your method follows the spec details above. Example hash below.

Example return value hash for close_auction

#=>
# {
#   #<Item:0x00007f9ea5af30c0 ...> => #<Attendee:0x00007f9ea50c4748 ...>,
#   #<Item:0x00007f9ea5a5a190 ...> => 'Not Sold',
#   #<Item:0x00007f9ea5910c08 ...> => #<Attendee:0x00007f9ea50c4748 ...>,
#   #<Item:0x00007f9ea5c08f00 ...> => #<Attendee:0x00007f9ea50b5b58 ...>,
#   #<Item:0x00007f9ea5bc0480 ...> => #<Attendee:0x00007f9ea5b73f40 ...>
# }
#