# Chapter 5 page 54

# define class using the class keyword
# class is a blueprint for objects
# Contact Class 3 objects fname, lname, age(int)
# use the __init__ built in method to define the attributes of the class

######### Contact Class Blueprint ###################
class Contact:  # defines the NAME of our class
    # attribute (aka. global class variable) to be used by Class Methods page 57
    total_contacts = 0

    # Instance method page 55
    def __init__(self, fname, lname, age):
        # property or var name = param
        self.fname = fname # public string attr
        self.lname = lname
        self.age = age # public int attr
        Contact.total_contacts += 1 # increment
        # Contact.total_contacts + 1 # addition operator

        # _hidden variable/attr/property page 59
        self._vipStatus = True # boolean default assignment

    # getter to get the value assigned
    # @property decorator to type change from attr to property
    # property(attr)
    @property
    def vipStatus(self):
        return self._vipStatus

    # setter page 59
    @vipStatus.setter
    def vipStatus(self, x):  # x is a param that you will assign calling of the method
        # conditional testing
        # if the value is already set to True
        self._vipStatus = x # what is passed when we call the method
        ### Example of call in program ###
        ### new_contact1._vipStatus = False ###
            
    # Class method page 57
    @classmethod # decorator has to be one the line above the def keyword
    def display_total_contacts(cls):
        return cls.total_contacts

    # Instance method page 55
    def contact_info(self):
        #print(f"{self.fname} {self.lname} {self.age}") # format {template variable}
        return f"{self.fname} {self.lname} {self.age}"

    # Static method page 57
    @staticmethod
    def is_adult(age):
        return age >= 18 # True False

#####################################################

############## Contact Details Class ################
# Inheritance page 60-62

class ContactDetails(Contact):
    def __init__(self, fname, lname, age, email, department): # 5
        # Contact.__init__(self,fname,lname,age)   method 1
        # method 2 super()
        super().__init__(fname, lname, age=None)  # 3 attr parent

        # 2 attrs child
        self.department = department
        self.email = email

    def contact_fname_dept(self):
        return f'First Name: {contact_details.fname} Department: {contact_details.department}.'


#####################################################

#######  Program main() "Run"  ######################

def contact_information(fname, lname, age):
    print(f"{fname} {lname} {age}")

# Create an instance of the Contact class and pass the values as arg
# new_contact is the instance name = ContactClass(params)
new_contact1 = Contact("Philip", "Matusiak", 21)
new_contact2 = Contact("Bob", "Smith", 32)

# new_contact.contact_info() >>> IF print() is already returned from method() or call print() as a part of the main() program
print(new_contact1.contact_info())
print(new_contact2.contact_info())

# total number of contacts added
print(Contact.display_total_contacts())  # Asserting 2 in Output

# call the static method and return the boolean page 57
print(Contact.is_adult(52)) # True
print(Contact.is_adult(14)) # False

#age = int( input("Enter contact age: "))
age = 32
print(Contact.is_adult(age))

# get the current value of vipStatus #True
print("==== Return of Getter =====")
print(new_contact1._vipStatus)

# calling a setter of the class reset the vipStatus #set vipStatus False
new_contact1._vipStatus = False

# get the new value of vipStatus that was just set #False
print("==== Return of Getter after Setting to new value =====")
print(new_contact1._vipStatus)

# Inheritance create instance of ContactDetails child class page 62
contact_details = ContactDetails("Mary", "Jones", 32, "mary@gmail.com", "Human Resources")

print("Using the instance variables in the program.")
print(f'First Name: {contact_details.fname} Department: {contact_details.department}.')

print("Using the instance method in the class.")
print(contact_details.contact_fname_dept())