import time
from netmiko.base_connection import BaseConnection


class RadETXBase(BaseConnection):
    """RAD ETX Support, Tested on RAD 203AX, 205A and 220A."""

    def session_preparation(self):
        self._test_channel_read()
        self.set_base_prompt()
        self.disable_paging(command="config term length 0")
        # Clear the read buffer
        time.sleep(0.3 * self.global_delay_factor)
        self.clear_buffer()

    def save_config(self, cmd="admin save", confirm=False, confirm_response=""):
        """Saves Config Using admin save."""
        if confirm:
            output = self.send_command_timing(command_string=cmd)
            if confirm_response:
                output += self.send_command_timing(confirm_response)
            else:
                # Send enter by default
                output += self.send_command_timing(self.RETURN)
        else:
            # Some devices are slow so match on trailing-prompt if you can
            output = self.send_command(command_string=cmd)
        return output

    def check_enable_mode(self, *args, **kwargs):
        """The Rad ETX software does not have an enable."""
        pass

    def enable(self, *args, **kwargs):
        """The Rad ETX software does not have an enable."""
        pass

    def exit_enable_mode(self, *args, **kwargs):
        """The Rad ETX software does not have an enable."""
        pass

    def config_mode(self, config_command="config", pattern=">config"):
        """Enter into configuration mode on remote device."""
        return super().config_mode(config_command=config_command, pattern=pattern)

    def check_config_mode(self, check_string=">config", pattern=""):
        """
        Checks if the device is in configuration mode or not.

        Rad config starts with baseprompt>config.
        """
        return super().check_config_mode(check_string=check_string, pattern=pattern)

    def exit_config_mode(self, exit_config="exit all", pattern="#"):
        """Exit from configuration mode."""
        return super().exit_config_mode(exit_config=exit_config, pattern=pattern)


class RadETXSSH(RadETXBase):
    """RAD ETX SSH Support."""

    def __init__(self, **kwargs):
        # Found that a global_delay_factor of 2 is needed at minimum for SSH to the Rad ETX.
        kwargs.setdefault("global_delay_factor", 2)
        return super().__init__(**kwargs)


class RadETXTelnet(RadETXBase):
    """RAD ETX Telnet Support."""

    def telnet_login(
        self, username_pattern=r"(?:user>)", alt_prompt_term=r"#\s*$", **kwargs
    ):
        """
        RAD presents with the following on login

        user>

        password> ****
        """
        self.TELNET_RETURN = self.RETURN
        return super().telnet_login(
            username_pattern=username_pattern,
            alt_prompt_terminator=alt_prompt_term,
            **kwargs
        )