"""scrapli.driver.core.cisco_iosxr.sync_driver"""
from copy import deepcopy
from io import BytesIO
from typing import Any, Callable, Dict, List, Optional, Union

from scrapli.driver import NetworkDriver
from scrapli.driver.core.cisco_iosxr.base_driver import FAILED_WHEN_CONTAINS, PRIVS
from scrapli.driver.network.base_driver import PrivilegeLevel


def iosxr_on_open(conn: NetworkDriver) -> None:
    """
    IOSXRDriver default on_open callable

    Args:
        conn: NetworkDriver object

    Returns:
        None

    Raises:
        N/A

    """
    conn.acquire_priv(desired_priv=conn.default_desired_privilege_level)
    conn.send_command(command="terminal length 0")
    conn.send_command(command="terminal width 512")


def iosxr_on_close(conn: NetworkDriver) -> None:
    """
    IOSXRDriver default on_close callable

    Args:
        conn: NetworkDriver object

    Returns:
        None

    Raises:
        N/A

    """
    # write exit directly to the transport as channel would fail to find the prompt after sending
    # the exit command!
    conn.acquire_priv(desired_priv=conn.default_desired_privilege_level)
    conn.channel.write(channel_input="exit")
    conn.channel.send_return()


class IOSXRDriver(NetworkDriver):
    def __init__(
        self,
        host: str,
        privilege_levels: Optional[Dict[str, PrivilegeLevel]] = None,
        default_desired_privilege_level: str = "privilege_exec",
        port: Optional[int] = None,
        auth_username: str = "",
        auth_password: str = "",
        auth_private_key: str = "",
        auth_private_key_passphrase: str = "",
        auth_strict_key: bool = True,
        auth_bypass: bool = False,
        auth_telnet_login_pattern: str = "",
        auth_password_pattern: str = "",
        auth_passphrase_pattern: str = "",
        timeout_socket: float = 15.0,
        timeout_transport: float = 30.0,
        timeout_ops: float = 30.0,
        comms_return_char: str = "\n",
        ssh_config_file: Union[str, bool] = False,
        ssh_known_hosts_file: Union[str, bool] = False,
        on_init: Optional[Callable[..., Any]] = None,
        on_open: Optional[Callable[..., Any]] = None,
        on_close: Optional[Callable[..., Any]] = None,
        transport: str = "system",
        transport_options: Optional[Dict[str, Any]] = None,
        channel_log: Union[str, bool, BytesIO] = False,
        channel_log_mode: str = "write",
        channel_lock: bool = False,
        logging_uid: str = "",
        auth_secondary: str = "",
        failed_when_contains: Optional[List[str]] = None,
        textfsm_platform: str = "cisco_xr",
        genie_platform: str = "iosxr",
    ):
        """
        IOSXRDriver Object

        Please see `scrapli.driver.base.base_driver.Driver` for all "base driver" arguments!

        # noqa: DAR101

        Args:
            privilege_levels: optional user provided privilege levels, if left None will default to
                scrapli standard privilege levels
            default_desired_privilege_level: string of name of default desired priv, this is the
                priv level that is generally used to disable paging/set terminal width and things
                like that upon first login, and is also the priv level scrapli will try to acquire
                for normal "command" operations (`send_command`, `send_commands`)
            auth_secondary: password to use for secondary authentication (enable)
            on_open: callable that accepts the class instance as its only argument. this callable,
                if provided, is executed immediately after authentication is completed. Common use
                cases for this callable would be to disable paging or accept any kind of banner
                message that prompts a user upon connection
            on_close: callable that accepts the class instance as its only argument. this callable,
                if provided, is executed immediately prior to closing the underlying transport.
                Common use cases for this callable would be to save configurations prior to exiting,
                or to logout properly to free up vtys or similar.
            textfsm_platform: string name of textfsm parser platform
            genie_platform: string name of cisco genie parser platform
            failed_when_contains: List of strings that indicate a command/config has failed

        Returns:
            None

        Raises:
            N/A

        """
        if privilege_levels is None:
            privilege_levels = deepcopy(PRIVS)

        if on_open is None:
            on_open = iosxr_on_open
        if on_close is None:
            on_close = iosxr_on_close

        if failed_when_contains is None:
            failed_when_contains = FAILED_WHEN_CONTAINS.copy()

        super().__init__(
            host=host,
            port=port,
            auth_username=auth_username,
            auth_password=auth_password,
            auth_private_key=auth_private_key,
            auth_private_key_passphrase=auth_private_key_passphrase,
            auth_strict_key=auth_strict_key,
            auth_bypass=auth_bypass,
            auth_telnet_login_pattern=auth_telnet_login_pattern,
            auth_password_pattern=auth_password_pattern,
            auth_passphrase_pattern=auth_passphrase_pattern,
            timeout_socket=timeout_socket,
            timeout_transport=timeout_transport,
            timeout_ops=timeout_ops,
            comms_return_char=comms_return_char,
            ssh_config_file=ssh_config_file,
            ssh_known_hosts_file=ssh_known_hosts_file,
            on_init=on_init,
            on_open=on_open,
            on_close=on_close,
            transport=transport,
            transport_options=transport_options,
            channel_log=channel_log,
            channel_log_mode=channel_log_mode,
            channel_lock=channel_lock,
            logging_uid=logging_uid,
            privilege_levels=privilege_levels,
            default_desired_privilege_level=default_desired_privilege_level,
            auth_secondary=auth_secondary,
            failed_when_contains=failed_when_contains,
            textfsm_platform=textfsm_platform,
            genie_platform=genie_platform,
        )

    def _abort_config(self) -> None:
        """
        Abort IOSXR configuration session

        Args:
            N/A

        Returns:
            None

        Raises:
            N/A

        """
        self.channel.send_input(channel_input="abort")
        self._current_priv_level = self.privilege_levels["privilege_exec"]
