#oop_date_driver.py

from Date import Date as Date

#example client code:
d0 =  Date(5,15,1998)
print("d0:",d0)
d1 =  Date(1,25,2020)
print("d1:",d1)
d2 =  Date.from_string("12/23/1999")  #String parameter alternate constructor
print("d2:",d2)
d3 =  Date.from_epoch()           #no-arg constructor
print("d3:",d3)
d4 =  Date.from_copy(d2)   #copy constructor, d2 is parameter to be copied.
print("d4:",d4)

my_year = 1234
if my_year < Date.VALID_START_YEAR:
    print("Years before ",Date.VALID_START_YEAR," are no good")

#each Date object created increments the numberDates variable.
#client can learn its value:
d7 = Date.from_copy(d1)
print("Number of Date objects created:",Date.getNumberDates())
del d7
Date.decr_count()
print("Number of Date objects now:",Date.getNumberDates())

#if reset the application. 
#Date.clearNumberDates()   #tested. works

#use the valid day combo checker:
if Date.isValidDay(11,31,2020):
    print("Bad date")
        
if d1 == d1:    
    print("date is equal with itself")
if not d1 == d0:
    print("dates are not equal")
d6 = Date(5,15,2020)
if d1 == d6:    
    print("date objects with same data")

lst = [d0,d1,d2,d3,d4,d6]
print(sorted(lst))