from enum import Enum as PyEnum


class Permission(str, PyEnum):
    """All available permissions in the system."""

    # Audit permissions
    VIEW_AUDIT = "view_audit"
    FETCH_PRICE = "fetch_price"

    # Profile permissions
    MANAGE_OWN_PROFILE = "manage_own_profile"

    # Invite permissions
    MANAGE_INVITES = "manage_invites"
    VIEW_OWN_INVITES = "view_own_invites"

    # Exchange permissions (regular users)
    CREATE_EXCHANGE = "create_exchange"
    VIEW_OWN_EXCHANGES = "view_own_exchanges"
    CANCEL_OWN_EXCHANGE = "cancel_own_exchange"

    # Availability/Exchange permissions (admin)
    MANAGE_AVAILABILITY = "manage_availability"
    VIEW_ALL_EXCHANGES = "view_all_exchanges"
    CANCEL_ANY_EXCHANGE = "cancel_any_exchange"
    COMPLETE_EXCHANGE = "complete_exchange"


class InviteStatus(str, PyEnum):
    """Status of an invite."""

    READY = "ready"
    SPENT = "spent"
    REVOKED = "revoked"


class ExchangeStatus(str, PyEnum):
    """Status of an exchange trade."""

    BOOKED = "booked"
    COMPLETED = "completed"
    CANCELLED_BY_USER = "cancelled_by_user"
    CANCELLED_BY_ADMIN = "cancelled_by_admin"
    NO_SHOW = "no_show"


class TradeDirection(str, PyEnum):
    """Direction of a trade from the user's perspective."""

    BUY = "buy"  # User buys BTC, gives EUR
    SELL = "sell"  # User sells BTC, gets EUR


class BitcoinTransferMethod(str, PyEnum):
    """Bitcoin transfer method for exchange trades."""

    ONCHAIN = "onchain"
    LIGHTNING = "lightning"