# Syntaxes

class Person
 # Class magic here ...
end

Person.new

# Initialize

class Person
 def initialize(name)
  puts name
 end
end

Person.new("Paulo")

# Intance Variables

class Person
 def initialize(name)
  @name = name
 end
end

person = Person.new("Paulo")

# Instance Methds & Class Methods

class Person
 def initialize(name)
  @name = name
 end

 # Metodos de instancia
 def say_hello
  puts "Hi! My name is #{@name}"
 end

 # Metodos de clase
 def self.type
  p "I'm Happy Person!!"
 end
end

Person.type
person = Person.new("Paulo")
person.current_name

# Scope Variables

@name  # Variable de instancia
@@type # Variable de clase
$title # Variable global

# Scope Example

class Person
  $title = "Fragmentado"
  @@personalities = 0

  def initialize(name)
    @name = name
    @@personalities += 1
  end

  def say_hello
    "Hi! My name is #{@name}"
  end

  def self.current_type
    @@personalities
  end
end

# Make a new Person instance:
patricia  = Person.new("Patricia")
# kevin  = Person.new("kevin")
# dennis  = Person.new("Dennis")
# barry  = Person.new("Barry")
# the_beast  = Person.new("The Beast")

puts "Current person greets: #{kevin.say_hello}"
# @name pertenece a la instancia person.

puts "Movie: #{$title}"
# $title es Global! Lo podemos obtener directamente.

puts "Type: #{Person.current_type}"
# @@type Pertenece a la clase Persona.

# Syntaxes

class DerivedClass < BaseClass
 # Some stuff!
end

# Class inheritance

class ApplicationError
 def display_error
  puts "Error! Error!"
 end
 
 def hello
  puts 'hello'
 end
end

class SuperBadError < ApplicationError
end

err = SuperBadError.new
err.display_error
err.hello

# Class inheritence - with initialize

class Application
 def initialize(name)
  @name = name
 end
 
 def say_name
  @name
 end
end

class MyApp < Application
end

application = Application.new("codeable.la")

my_app = MyApp.new("classroom.codeable.la")
p my_app.say_name

# Override methods
class Eevee
  def initialize(name = "eevee")
    @name = name
  end

  def fight
    "tackle"
  end
end

class Vaporeon < Eevee
  def fight
    "Water gun"
  end
end

vaporeon = Vaporeon.new('vaporeon')
p vaporeon

# Just one!

class Eevee
  def initialize(name)
    @name = name
  end
end

class Vaporeon
  def initialize(name)
    @name = name
  end
end

# /////
class Ditto < Eevee; end
class Ditto < Vaporeon; end
# /////

# Keyword super
class Eevee
  def initialize(name = "eevee")
    @name = name
    @type = "normal"
  end

  def fight
    "tackle"
  end
end

class Vaporeon < Eevee
  def initialize(name = "vaporeon")
  # /////
    super(name)
  # /////
    @type = "water"
  end

  def fight
    "Water gun"
  end
end

vaporeon = Vaporeon.new()
p vaporeon

class Message
 @@messages_sent = 0
 
 def initialize(from, to)
  @from = from
  @to = to
  @@messages_sent += 1
 end
end

class Email < Message
 def initialize(from, to, subject)
  super(from, to)
  @subject = subject
 end
end

my_message = Message.new("pato",'leti')
my_email = Email.new("perro","dogi", "Hi!!")
p my_email

# Attribute readers & Attribute Writers 

class Person
 attr_reader :name
 attr_writer :name

 def initialize(name, job)
  @name = name
  @job = job
 end
end

# Attribute Accessor

class Person
  attr_accessor :name

  def initialize(name, job)
    @name = name
    @job = job
  end
end