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winsizeX = 75
winsizeY = 20

global show_help
show_help = False
password = ""

help_menu = [
"Press m to toggle help",
"Navigation:",
"  Arrow keys,",
"  WASD,",
"  HJKL",
"Press Enter or Space to generate a password",
"Press Shift-Q to quit"
]


import random
import curses
import math
from english_words import english_words_lower_alpha_set

numbers_list = '0123456789'
characters_list = '{}[]()!@#$%^&*,./<>?\\|`~-_=+\'\";:'

stdscr = curses.initscr()
curses.noecho()
curses.curs_set(0)

height, width = stdscr.getmaxyx()

distanceX = width - winsizeX
distanceY = height - winsizeY

mainwin = curses.newwin(0, 0, distanceY, distanceX)

mainwin.mvwin(math.floor(distanceY / 2), math.floor(distanceX / 2))

curses.start_color()

from config import config

options = [
# name                    value    min    max
["Words",                 2,       2,     12],
["Numbers",               0,       0,     12],
["Special Characters",    0,       0,     12]
]

global curspos
curspos = 0 # cursor position

def Left():
    if options[curspos][1] > options[curspos][2]:
        options[curspos][1] -= 1

def Right():
    if options[curspos][1] < options[curspos][3]:
        options[curspos][1] += 1

def Up():
    global curspos
    if curspos > 0:
        curspos -= 1

def Down():
    global curspos
    if curspos < len(options) - 1:
        curspos += 1

def Generate():
    global password
    password = ""
    new_list = []
    
    for i in range(options[0][1]):
        new_list.append(random.choice(list(english_words_lower_alpha_set)))
    for i in range(options[1][1]):
        new_list.append(random.choice(list(numbers_list)))
    for i in range(options[2][1]):
        new_list.append(random.choice(list(characters_list)))
    
    random.shuffle(new_list)
    for item in new_list:
        password = password + item

def Render():
    mainwin.clear()
    mainwin.box()

    mainwin.addstr(1, 1, help_menu[0], curses.color_pair(3))
    if show_help:
        for i in range(len(help_menu)):
            if i == 0:
                continue
            mainwin.addstr(i + 1, 1, help_menu[i], curses.color_pair(3))
    else:
        for i in range(len(options)):
            color = 1
            if i == curspos:
                mainwin.addstr(i + 2, winsizeX - 3 - len(str(options[i][1])), "<", curses.color_pair(2))
                mainwin.addstr(i + 2, winsizeX - 2, ">", curses.color_pair(2))
                color = 2
            mainwin.addstr(i + 2, 1, options[i][0], curses.color_pair(color))
            mainwin.addstr(i + 2, winsizeX - 2 - len(str(options[i][1])), str(options[i][1]), curses.color_pair(1))
        mainwin.addstr(winsizeY - 2, 1, password)

while True:
    Render()
    key = mainwin.getch()
    if key in config.key_quit:
        break
    if key in config.key_left:
        Left()
    elif key in config.key_right:
        Right()
    elif key in config.key_up:
        Up()
    elif key in config.key_down:
        Down()
    elif key in config.key_enter:
        Generate() 
    elif key in config.key_help:
        show_help = not show_help

curses.endwin()