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# happy_tails.rb
# Spencer Eldred
# Sept 27, 2013
# Activity:
# You are the manager at HappiTails animal shelter. You need to manage your shelter by storing and manipulating information about clients and animals.
# Object Specs:
# Animal:
# An animal should have a name, an age, a gender, a species, and can have multiple toys.
class Animal
attr_accessor :name, :age, :gender, :species, :toys
@@new_animal_id = 0
def initialize(name, age, gender, species, toys)
@name = name
@age = age
@gender = gender
@species = species
@toys = toys
@@new_animal_id += 1
end
def self.get_animal_id
@@new_animal_id
end
def add_toy(toy)
@toys << toy
end
def to_s
"#@name: Age: #@age, Gender: #@gender, Species: #@species, Toys: #@toys"
end
end
# Client:
# A client should have a name, a number of children, an age, and a number of pets.
class Client
attr_accessor :name, :number_of_children, :age, :number_of_pets, :animals
@@new_client_id = 0
def initialize(name, number_of_children, age)
@name = name
@number_of_children = number_of_children
@age = age
@number_of_pets = 0
@animals = []
@@new_client_id += 1
end
def add_animal(animal)
@animals << animal
@number_of_pets += 1
end
def remove_animal(animal)
@animals.delete(animal)
@number_of_pets -= 1
end
def display_pets
@animals.each |animal| puts animal
end
def self.get_client_id
@@new_client_id
end
def to_s
"#@name: Number of children: #@number_of_children, Age: #@age, Number of pets: #@number_of_pets"
end
end
# Shelter:
# The shelter should display all the clients, and all the animals.
class Shelter
attr_accessor :animals, :clients
def initialize(animals, clients)
@animals = animals
@clients = clients
end
def add_client(client)
@clients << client
end
def remove_client(client)
@client.delete(client)
end
def add_animal(animal)
@animals << animal
end
def remove_animal(animal)
@animals.delete(animal)
end
def display_clients
@clients.each |client| display_user(client) unless client.name == "Visitor"
end
def display_client(user)
@clients.each |client| display_user(client) if client.name == user
end
def display_user(client)
puts client
if client.number_of_pets > 0
puts "\t#client.name's' list of adopted animals: \n\t#client.animals.join("\n\t")."
else
puts "\t#client.name has not adopted any animals yet."
end
end
def display_animals
@animals.each |animal| puts animal
end
def display_animal(pet)
@animals.each |animal| puts animal.name
end
end # Shelter
# Login with error handling and custom error
class UserValidationError < StandardError
def message
display_banner
"The name you entered is not on the client list. \n" +
"Enter your name, or Visitor to log in:"
end
end
def validate_client(shelter)
puts ""
puts "Enter your name, or Visitor to log in:"
begin
user = gets.chomp
raise UserValidationError if !shelter.clients.any? |client| client.name == user
rescue StandardError => e # runs if there is an error
puts e.message
# puts "Retry [y/n]"
# try_again = gets.chomp
# if try_again == "n" # want to exit block if user needs to create client account
# login(shelter)
# end
retry # runs program starting at the begin block
ensure # always runs at the end of the block. good for closing files or closing databases
puts "Welcom #user, you are now logged in."
return user
end
end
# Relationships:
# A client should be able to adopt an animal.
# A client should be able to put an animal up for adoption
def adopt_an_animal(shelter, user)
puts "\tAdopt an animal"
animal_list(shelter)
puts "\nLogged in user account information:\n"
shelter.display_client(user)
puts "\nHello #user, type in the name of the animal you would like to adopt:"
pet = gets.chomp
if shelter.animals.any? |animal| animal.name == pet
shelter.clients.each do |client|
if client.name == user
shelter.animals.each |animal| client.add_animal(animal) if animal.name == pet
end
end
shelter.animals.each |animal| shelter.remove_animal(animal) if animal.name == pet
puts "Congratulations #user, you have just adopted #pet!"
else
puts "#pet is not one of the animals on the list. Return to menu and try again."
end
end
def put_animal_up_for_adoption(shelter, user)
#shelter.display_client(user)
puts "\tPut animal up for adoption:"
puts "Is this animal a stray? [y/n]"
stray = gets.chomp
if stray == "n"
puts "Hello #user, here is your current list of pets:"
shelter.clients.each |client| client.display_pets if client.name == user
puts "What pet would you like to put up for adoption:"
pet = gets.chomp
puts "youve requested animal: #pet"
shelter.clients.each do |client|
if client.name == user
client.animals.each do |animal|
shelter.add_animal(animal)
client.remove_animal(animal)
end # client.animals.each
end # if client.name == user
end # shelter.clients.each
else
create_animal(shelter)
put_animal_up_for_adoption(shelter,user)
end # if not stray
puts "#pet has been put up for adoption."
end
# class Animal(name, age, gender, species, toys)
def create_animal(shelter)
puts "\tCreate an animal"
puts "Enter the following data for your animal:"
print "Name: "
name = gets.chomp
print "Age: "
age = gets.chomp.to_i
print "Gender: "
gender = gets.chomp
print "Species: "
species = gets.chomp
print "Toys - (enter a comma separated list): "
toys = []
toys << gets.chomp
shelter.add_animal(Animal.new(name, age, gender, species, toys.join.split(", ")))
end
# class Client(name, number_of_children, age, number_of_pets)
def create_client(shelter)
puts "\tCreate a client:"
puts "Enter the following data for client:"
print "Name: "
name = gets.chomp
print "Number of children: "
number_of_children = gets.chomp.to_i
print "Age: "
age = gets.chomp.to_i
shelter.add_client(Client.new(name, number_of_children, age))
end
# Helper methods
def return_to_continue
puts ""
puts "press return to continue"
gets.chomp
end
def quit
puts "Aloha, come back again!"
end # def quit
def display_banner
puts `clear`
puts "Animal Shelter - adopt a new pet today!"
puts "****************************************"
end
def animal_list(shelter)
puts ""
puts "There are #shelter.animals.length animals available for adoption:"
puts ""
shelter.display_animals
end
def client_list(shelter)
puts ""
puts "Shelter client list: (#shelter.clients.length clients)"
puts ""
shelter.display_clients
end
# main menu
def main(shelter, user)
valid_mode = false
while !valid_mode
display_banner
puts "Enter number to execute request:"
puts " 1) Display all animals"
puts " 2) Display all clients"
puts " 3) Create an animal"
puts " 4) Create a client"
puts " 5) Adopt an animal"
puts " 6) Put an animal up for adoption"
puts " Q) Quit"
mode = gets.chomp.upcase
if mode == "1" || mode == "2" || mode == "3" || mode == "4" || mode == "5" || mode == "6" || mode == "Q"
valid_mode = true
display_banner
case mode
when "1"
animal_list(shelter)
when "2"
client_list(shelter)
when "3"
create_animal(shelter)
when "4"
create_client(shelter)
when "5"
if user == "Visitor"
puts "\n\tAs Visitor, you cannot adopt an animal, \n\tyou must create an account and log in."
else
adopt_an_animal(shelter, user)
end
when "6"
if user == "Visitor"
puts "\n\tAs Visitor, you cannot place an animal up for adoption, \n\tyou must create an account and log in."
else
put_animal_up_for_adoption(shelter, user)
end
when "Q"
quit
end # case mode
unless mode == "Q"
return_to_continue
main(shelter, user) unless mode == "Q"
end
else
puts "You didn't enter a valid selection, try again.\n\n"
end # if
end # while !valid_mode
end # def start_menu
# login menu
def login(shelter)
valid_mode = false
while !valid_mode
display_banner
puts "Select"
puts "1) Login"
puts "2) Create Client Account"
puts "Q) Quit"
mode = gets.chomp.upcase
if mode == "1" || mode == "2" || mode == "Q"
valid_mode = true
display_banner
case mode
when "1"
user = validate_client(shelter)
main(shelter, user)
when "2"
create_client(shelter)
client_list(shelter)
return_to_continue
login(shelter)
when "Q"
quit
else
login
end # case mode
else
puts "You didn't enter a valid selection, try again.\n\n"
end # if
end # while !valid_mode
end # def login
# initialize method, calls main
def init
# create the initial animals
# class Animal(name, age, gender, species, toys)
bootsie = Animal.new("Bootsie", 12, "female", "cat", ["roaches", "cane spiders", "geckos"])
lani = Animal.new("Lani", 4, "female", "cat", ["fuzzy ball", "geckos"])
thor = Animal.new("Thor", 8, "male", "dog", ["tennis ball", "apples"])
lili = Animal.new("Lili", 4, "female", "cat", ["imaginary friend", "chair"])
dexter = Animal.new("Dexter", 7, "male" ,"dog", ["chew toy", "stuffed animal"])
# create the initial clients
# class Client(name, number_of_children, age, number_of_pets)
visitor = Client.new("Visitor", 0, 25)
bob = Client.new("Bob", 4, 76)
annie = Client.new("Annie", 0, 42)
adara = Client.new("Adara", 0, 16)
josh = Client.new("Josh", 0, 18)
# create the shelter with the initial animals and clients
animals = [bootsie, lani, thor, lili, dexter]
clients = [bob, annie, adara, josh,visitor]
shelter = Shelter.new(animals, clients)
# call login
login(shelter)
end
# Start the program with a call to "init"
init
# Instructions:
# Phase 1
# Can create animals and clients
# Phase 2
# New animals and clients can be added to the shelter
# Phase 3
# When creating an animal or client, the user is prompted for information like names, gender etc.
# Phase 4
# At start, the user is prompted with a menu of options:
# display all animals, display all clients, create an animal, create an client
# facilitate client adopts an animal, facilitate client puts an animal up for adoption
# After selecting from the menu the task the user is prompted through the entire process
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