patient.rb

class Patient
  # data
  # name
  # cured

  attr_accessor :room, :id
  attr_reader :name

  def initialize(attributes = {})
    @id = attributes[:id]    # string
    @name = attributes[:name]    # string
    @cured = attributes[:cured] || false  # boolean
    @room = attributes[:room] # instance of Room
  end

  # behavior
  def cure
    @cured = true
  end

end


# Testing

# arthur = Patient.new('Arthur', false)
arthur = Patient.new({cured: false, name: 'Arthur'})
mark = Patient.new({name: 'Mark'})
# lucy = Patient.new()


# p mark
# p arthur

# arthur.cure

# p arthur

patients.csv

patients_repository.rb

require 'csv'
require_relative 'patient'

class PatientsRepository
  # data
  # all the patients
  # csv
  def initialize(csv_file)
    @patients = [] # Array of patient instances
    @csv_file = csv_file

    @next_id = 1
    # load csv
    load_csv # next id will be 3 after this method
  end

  # patient will arrive without an ID
  def add_patient(patient)
    #
    patient.id = @next_id
    @next_id += 1
    @patients << patient
  end

  # behavior
  def load_csv
    csv_options = { headers: :first_row, header_converters: :symbol }

    CSV.foreach(@csv_file, csv_options) do |row|
      # convert row before adding it
      row[:id] = row[:id].to_i
      row[:cured] = row[:cured] == 'true'

      # ??? push patients inside of @patients
      # @patients << Patient.new(row) # because row is a hash!!!
      @patients << Patient.new({id: row[:id], name: row[:name], cured: row[:cured]})
      @next_id = row[:id]

    end
    @next_id += 1


  end
end

repo = PatientsRepository.new('patients.csv')
p repo

room.rb

require_relative 'patient'

class Room
  # data
  # room number
  # capacity
  # patients

  def initialize(attributes = {})
    @capacity = attributes[:capacity] || 1 # Integer
    @patients = attributes[:patients] || [] # Array of Patient instance
  end

  # behavior
  def add_patient(patient)
    unless full?
      @patients << patient
      patient.room = self
    else
      raise StandardError, "room is full!"
    end
  end

  def full?
    @capacity <= @patients.size
  end


end


# Testing
room_1 = Room.new({capacity: 2})

arthur = Patient.new({cured: false, name: 'Arthur'})
paul = Patient.new({cured: false, name: 'paul'})
lucy = Patient.new({cured: false, name: 'lucy'})

room_1.add_patient(arthur)
room_1.add_patient(paul)
room_1.add_patient(lucy)


p room_1