import time
import random


def generate_id() -> str:
    """Generate a time-sortable unique ID (simplified ULID-style)."""
    timestamp = int(time.time() * 1000)
    randomness = random.randint(0, 0xFFFFFF)
    return f"{timestamp:013x}{randomness:06x}"


def generate_order_no() -> str:
    """Generate a human-readable order number."""
    timestamp = int(time.time())
    randomness = random.randint(1000, 9999)
    return f"VG{timestamp}{randomness}"