import time

# Simulated GPIO class for online simulator
class SimulatedGPIO:
    HIGH = 1
    LOW = 0

    @staticmethod
    def setup(pin, mode):
        print(f"Setting up pin {pin} as {mode}")

    @staticmethod
    def output(pin, state):
        state_str = "HIGH (on)" if state == SimulatedGPIO.HIGH else "LOW (off)"
        print(f"Pin {pin} is now {state_str}")

    @staticmethod
    def setwarnings(flag):
        pass

    @staticmethod
    def setmode(mode):
        pass

# Use SimulatedGPIO instead of RPi.GPIO
GPIO = SimulatedGPIO()

# Define GPIO pins for the 7-segment display
segments = {
    'a': 0,   # GP0
    'b': 1,   # GP1
    'c': 2,   # GP2
    'd': 3,   # GP3
    'e': 4,   # GP4
    'f': 5,   # GP5
    'g': 6,   # GP6
}

digits = [10, 11, 12, 13]  # Digit 1, Digit 2, Digit 3, Digit 4 (GP10, GP11, GP12, GP13)

# Define the segment values for the numbers 0-9
num = {
    '0': (1, 1, 1, 1, 1, 1, 0),
    '1': (0, 1, 1, 0, 0, 0, 0),
    '2': (1, 1, 0, 1, 1, 0, 1),
    '3': (1, 1, 1, 1, 0, 0, 1),
    '4': (0, 1, 1, 0, 0, 1, 1),
    '5': (1, 0, 1, 1, 0, 1, 1),
    '6': (1, 0, 1, 1, 1, 1, 1),
    '7': (1, 1, 1, 0, 0, 0, 0),
    '8': (1, 1, 1, 1, 1, 1, 1),
    '9': (1, 1, 1, 1, 0, 1, 1)
}

GPIO.setwarnings(False)
GPIO.setmode('BCM')  # Just a placeholder, does nothing in simulation

# Set up segment pins as outputs
for segment in segments.values():
    GPIO.setup(segment, 'OUT')

# Set up digit pins as outputs
for digit in digits:
    GPIO.setup(digit, 'OUT')

def display_number(value):
    """Display a 4-digit number on the 7-segment display."""
    for digit in range(4):
        # Activate the digit
        GPIO.output(digits[digit], GPIO.LOW)
        
        # Set the segments for the current digit
        for idx, segment in enumerate(segments.values()):
            GPIO.output(segment, GPIO.HIGH if num[value[digit]][idx] else GPIO.LOW)
        
        # Wait to keep the digit on for a short period
        time.sleep(0.001)
        
        # Deactivate the digit
        GPIO.output(digits[digit], GPIO.HIGH)

try:
    while True:
        display_number('1234')  # Change '1234' to the number you want to display
except KeyboardInterrupt:
    print("Simulation ended")