#!/usr/bin/env python
#Ethan Thompson
#Platt Tech Information Technology

from os import system #from os module import system
import time # import time module
import random #import random
import json # importing the json module to manipulate files
from string import ascii_letters, digits #importing this allows me to get all ascii characters, that are uppercase and/or lowercase 

loaded = open('Manager.json','r')  # loaded being equal to a file and 'r' means to read it
my_data = loaded.read()# loaded.read() will allow me to read the file, that being equal to a variable will allow me to do the following
loaded.close() 
CDA = json.loads(my_data)

#json.loads is used to parse a valid json string and convert it into the python dictionary json.loads( ) -
#inside  the parameter I have put  my_data which equals loaded.read() so it can take the string from the file and all of that equals converted data which I use all-
#over my program.

def Main():
	print('')
	print('Main Page') # my main page
	print('1. Start Generating Password')#pressing 1 activates this program
	print('2. View a single password')#pressing 2 views all passwords
	print('3. Delete a password')#press 3 then you can delete a password
	print('x. Exit Main Page')#exiting the main if you press x

	Pass_Output = input("START PROGRAM HERE ->>: ")#allowing you to press spacebar to start the program
	Pass_Items = ['1','2','3','x','', ] # the print statement will activate by pressing 1 ,2 and x ->> these are converted to string to python knows to activate the statements

	if Pass_Output not in Pass_Items: #if your number isnt in the list named Pass_Items then menu() function will restart to main page
		Main()#restarts function
		
	if Pass_Output == '1':#if you press 1 
		Gen()#call this function
		
	if Pass_Output == '2':#if you press 2
		Single()#call this gunction
	
	if Pass_Output == '3':#if you press 3 
		DelPass()#call this function

	if Pass_Output == 'x':#this is the exit if statement
		Quit = input('exit? y or n?')#this gives the option to type in a lower/uppercase  Y,y or n,N.
		
		if Quit == 'y':#if your answer is y
			quit()#if you want to quit then quit() will stop the program and exit out
			
		if Quit == 'n':#if your answer is n
			system('clear')#clear screen
			Main()#allows you to start over
			
		if Quit == '':#if you press enter by mistake
			system('clear')#clear screen
			Main()#go back to the top of the code

	if Pass_Output != Pass_Items:#if  your number not equal to the items in Pass_Items do the following
		system('clear') #clear screen
		Main()#lastly restart the code

def Gen():#defining by Gen Function
		
	try:#I am trying out the code below
		V = input('before we start, what is your password for?: ')# v will be my variable and name to the head of your password
		print(V ,' good choice')#this print statement will tell you your answer and say it's a good choice
		time.sleep(2)#allows python to sleep
		system('clear')#clears screen
		C = int(input('give a number from 8-12 for your password: '))#this will give the person a choice between a number from 8 to 12 
		#I used int(input()) to convert any string into a number so the following code below can work
		
		if C  in range(8,257):#if the number you inputed thats converted into a number is in range of 8 to 256 do the following
			Collection = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUZWXYZ1234567890!@#$%^&*~`;:+=_-><,?/\|{}[]'
			QW = ''.join(random.sample(Collection,C))#form a random collection of letters that has a length of 8, The original code had 5 lines of seperate code for each length
			print('your password is',QW)#print out the password python generated
			
		else:#otherwise 
			print('no password, characters has to be a number from  8 to 12')# print you wont get a password and tells you the proper lengths
			system('clear')#clears screen
			Main()#goes all the way to the top of the code to restart
		time.sleep(2)#allows python to sleep for 2 seconds
		ask = input("would you like to save your password/back up password?: ") #the variable ask will allow you to input a choice of yes or no
	
	except ValueError:#except handle this error you get if you dont input a number, which is known as a value error
		system('clear')#clears screen
		Main()#goes to the top of the code, restarts to main page
		
	if ask == 'y':#if your input is y then do the following
		Starting_time = time.strftime("%m/%d/%y, %H:%M:%S")#this should print -->>> the time, 	#the month/day/year, hours/minutes/seconds
		print("You have backed up the Manager at: {}".format(Starting_time))#Starting_time is equal to all of the %'s and .format will join those %'s together in the form of n/n/n/ n/n/n
		print('the password {} is now saved'.format(QW)) #this prints out the term you choose from the dictionary
		print('{0} password is under the name of {1}'.format(QW,V))# the numbers in the {} are indexes to make sure I format correctly
		CDA[V] = QW #names the front of dictionary
		time.sleep(2)#allows python to sleep for 2 seconds
		write_file()#write file, this allows python to save this to the memory
		#print('press enter to return to menu')#press enter to do this line of code
		system('clear')#clears screen
		Main()#goes to the top of the Main() function
		
	if ask == 'backup':	
		file_string = open('copy mynewfile.txt Manager.json','x') #creates your new backed up file
		print('creating a new  manager {}'.format(file_string)) # this creates a new dictionary and it tells that it is creating a new dictionary
	
	if ask == 'n':#if you enter n then do the following
		system('clear')#clear screen
		Main()#goes to the top of the Main() function
				
def Single(): #Single Function does the following works
	print("\nhere you will view a specific password")#tells you that you can view a specific password
	
	for i in CDA:#for all the  items in CDA then 
		print(i)#print out all the items in CDA
		
	ViewSingle = input("enter an application from above: ")# Enter an application you see from above
	system('clear')#clears screen
	
	try:#try the following code below
		print("your password for {} is ->> \n\n {} ".format(ViewSingle,CDA[ViewSingle]))#prints out the Application you inputed and formats it into the Password Manager
		input("press the enter button to return to menu")#this line allows you to press enter by you inputing enter
		system('clear')#clears screen
		Main()#goes to the top of the Main() function

	except:#except handle all of the errors python faces
		print('{} this Application is not in your manager'.format(ViewSingle))# tells you that the application that you inputed is not in your manager
		#if you enter the wrong application then it will tell you
		input('press enter to try again')#this line of code tells you to press
		#enter to try again
		system('clear')#clears screen
		Main()#goes to the top of the Main() function

def write_file():#write file allows me to save the key and values to the memory
	#if input():# if you input something then 
	loaded = json.dumps(CDA, indent = 4)#indent my Manager.json file and indent each line in the dictionary by 4
	toFile = open('Manager.json','w')#Then write in the Manager file
	toFile.write(loaded)#this will allow me to have the privellege to instead of read but write in the file
	toFile.close()# toFile.close() allows you to closes the file
	return#returns this if statement
		#input("press enter to return to menu")#press enter to go again	
	#return#returns the write_file() function, gives back

def DelPass():#This Delete System allows you to delete the application plus the password for it
	system('clear')#clears screen
	
	for i in CDA:#for all the  items in CDA then
		print(i)#print all of it out
		
	Removed = input('enter the application to the password you want to remove: ') #Removed is a variable that will allow you to pick the application you want to get rid of
	system('clear')#clears screen
	
	try:#try the following code
		del CDA[Removed]#del is short for delete, delete CDA[ ->> the application you inputed]
		write_file()#write file saves the data in which you have deleted a application along with it's password
		print("deleted the application: {}".format(Removed))#if true then the application will be gone
		time.sleep(2)#allows python to sleep for 2 seconds
		system('clear')#clears screen
		Main()#goes to the Main function by calling out the function with ()
		
	except:#except handle all of the errors
		try1 = input('this is not in your manager, would you like to restart?: ')#if your input is not shown then this line above gives the option to restart by using input()
		
		if try1 == 'y':#if what you inputted is y then
			print('going back')#go back to where you starte to deleting the password
			time.sleep(2)#allows python to sleep for 2 seconds
			DelPass()#goes back to the DelPass Function to restart
			
		if try1 == 'n':#if your input is n then do the following
			system('clear')#clears screen
			Main()#goes all the way to the Top of the Function
			
if __name__ == '__main__':#this piece of code allows all of the functions to be activated
	Main()#this allows me to Activate the Main Function to allow all the code to work