bit masing for user visibility

visibility.py

# Constants representing each status as bit flags
ENABLE = 1 << 0             # 0b000001
BLOCKED_BY_GLOBAL = 1 << 1  # 0b000010
BLOCKED_BY_CN = 1 << 2      # 0b000100
COPYRIGHT_GLOBAL = 1 << 3   # 0b001000
COPYRIGHT_CN = 1 << 4       # 0b010000
PENDING_DELETION = 1 << 5   # 0b100000

def set_status(status_flags, condition):
    """Set a specific condition."""
    return status_flags | condition

def unset_status(status_flags, condition):
    """Unset a specific condition."""
    return status_flags & ~condition

def is_visible(status_flags):
    """Check if the item is visible based on the conditions."""
    # Check if ENABLE is 1 and all other flags (1 to 5) are 0
    return status_flags == ENABLE

# Usage:
status_flags = 0  # Initially, no flags are set

# Setting some statuses as an example
status_flags = set_status(status_flags, BLOCKED_BY_GLOBAL)
status_flags = set_status(status_flags, COPYRIGHT_CN)

# Unsetting a status
status_flags = unset_status(status_flags, BLOCKED_BY_GLOBAL)

# Setting the 'ENABLE' status
status_flags = set_status(status_flags, ENABLE)

# Check if the item is visible
print("Is visible:", is_visible(status_flags))  # This will print: Is visible: False

# To make it visible, ensure that only 'ENABLE' flag is set
status_flags = ENABLE  # Resetting to only ENABLE flag
print("Is visible:", is_visible(status_flags))  # This will print: Is visible: True