import time
time.sleep(0.1) # Wait for USB to become ready

print("Hello, Pi Pico!")

import keypad4x3 as keypad
import lcdi2c as lcd
import json

# load the config file from flash
with open("pass.json") as f:
    store = json.load(f)
password=store["password"]
pwd="" #variable to store password
lcd.cmd_write(0xc2)
lcd.str_write("insert pass")
while 1:
    value=keypad.get_key()    
    if value!=0:
        print("key value:",value)
        if value=="#":
            lcd.cmd_write(0x01)
            lcd.cmd_write(0xc4)            
            if pwd==password:
                print("correct pass") 
                lcd.str_write("correct")               
            else:
                print("wrong pass")
                lcd.str_write("wrong")
            pwd="" # reset back storage
            time.sleep(2)
            lcd.cmd_write(0x01)
            lcd.cmd_write(0xc2)
            lcd.str_write("insert pass")
        elif value=='*':
            lcd.cmd_write(0x01)
            lcd.cmd_write(0xc2)
            lcd.str_write("new pass set")
            store["password"] = pwd
            with open("pass.json", "w") as f:
                json.dump(store, f)
            password=pwd
        else:
            pwd+=value
            print("key in password",pwd)
            lcd.cmd_write(0x85)
            for i in pwd:
                lcd.str_write("*")