def main(args=None):
    """Main commandline entrypoint"""
    if args is None:
        args = sys.argv[1:]

    parser = argparse.ArgumentParser(
        description="Find My iPhone CommandLine Tool")

    parser.add_argument(
        "--username",
        action="store",
        dest="username",
        default="",
        help="Apple ID to Use"
    )
    parser.add_argument(
        "--password",
        action="store",
        dest="password",
        default="",
        help=(
            "Apple ID Password to Use; if unspecified, password will be "
            "fetched from the system keyring."
        )
    )
    parser.add_argument(
        "-n",
        "--non-interactive",
        action="store_false",
        dest="interactive",
        default=True,
        help="Disable interactive prompts."
    )
    parser.add_argument(
        "--delete-from-keyring",
        action="store_true",
        dest="delete_from_keyring",
        default=False,
        help="Delete stored password in system keyring for this username.",
    )
    parser.add_argument(
        "--list",
        action="store_true",
        dest="list",
        default=False,
        help="Short Listings for Device(s) associated with account",
    )
    parser.add_argument(
        "--llist",
        action="store_true",
        dest="longlist",
        default=False,
        help="Detailed Listings for Device(s) associated with account",
    )
    parser.add_argument(
        "--locate",
        action="store_true",
        dest="locate",
        default=False,
        help="Retrieve Location for the iDevice (non-exclusive).",
    )

    #   Restrict actions to a specific devices UID / DID
    parser.add_argument(
        "--device",
        action="store",
        dest="device_id",
        default=False,
        help="Only effect this device",
    )

    #   Trigger Sound Alert
    parser.add_argument(
        "--sound",
        action="store_true",
        dest="sound",
        default=False,
        help="Play a sound on the device",
    )

    #   Trigger Message w/Sound Alert
    parser.add_argument(
        "--message",
        action="store",
        dest="message",
        default=False,
        help="Optional Text Message to display with a sound",
    )

    #   Trigger Message (without Sound) Alert
    parser.add_argument(
        "--silentmessage",
        action="store",
        dest="silentmessage",
        default=False,
        help="Optional Text Message to display with no sounds",
    )

    #   Lost Mode
    parser.add_argument(
        "--lostmode",
        action="store_true",
        dest="lostmode",
        default=False,
        help="Enable Lost mode for the device",
    )
    parser.add_argument(
        "--lostphone",
        action="store",
        dest="lost_phone",
        default=False,
        help="Phone Number allowed to call when lost mode is enabled",
    )
    parser.add_argument(
        "--lostpassword",
        action="store",
        dest="lost_password",
        default=False,
        help="Forcibly active this passcode on the idevice",
    )
    parser.add_argument(
        "--lostmessage",
        action="store",
        dest="lost_message",
        default="",
        help="Forcibly display this message when activating lost mode.",
    )

    #   Output device data to an pickle file
    parser.add_argument(
        "--outputfile",
        action="store_true",
        dest="output_to_file",
        default="",
        help="Save device data to a file in the current directory.",
    )

    command_line = parser.parse_args(args)

    username = command_line.username
    password = command_line.password

    if username and command_line.delete_from_keyring:
        utils.delete_password_in_keyring(username)

    failure_count = 0
    while True:
        # Which password we use is determined by your username, so we
        # do need to check for this first and separately.
        if not username:
            parser.error('No username supplied')

        if not password:
            password = utils.get_password(
                username,
                interactive=command_line.interactive
            )

        if not password:
            parser.error('No password supplied')

        try:
            api = pyicloud.PyiCloudService(
                username.strip(),
                password.strip()
            )
            if (
                not utils.password_exists_in_keyring(username) and
                command_line.interactive and
                confirm("Save password in keyring? ")
            ):
                utils.store_password_in_keyring(username, password)

            if api.requires_2sa:
                import click
                print("Two-step authentication required.",
                      "Your trusted devices are:")

                devices = api.trusted_devices
                for i, device in enumerate(devices):
                    print("  %s: %s" % (
                        i, device.get(
                            'deviceName',
                            "SMS to %s" % device.get('phoneNumber'))))

                device = click.prompt('Which device would you like to use?',
                                      default=0)
                device = devices[device]
                if not api.send_verification_code(device):
                    print("Failed to send verification code")
                    sys.exit(1)

                code = click.prompt('Please enter validation code')
                if not api.validate_verification_code(device, code):
                    print("Failed to verify verification code")
                    sys.exit(1)

            break
        except pyicloud.exceptions.PyiCloudFailedLoginException:
            # If they have a stored password; we just used it and
            # it did not work; let's delete it if there is one.
            if utils.password_exists_in_keyring(username):
                utils.delete_password_in_keyring(username)

            message = "Bad username or password for {username}".format(
                username=username,
            )
            password = None

            failure_count += 1
            if failure_count >= 3:
                raise RuntimeError(message)

            print(message, file=sys.stderr)

    for dev in api.devices:
        if (
            not command_line.device_id or
            (
                command_line.device_id.strip().lower() ==
                dev.content["id"].strip().lower()
            )
        ):
            #   List device(s)
            if command_line.locate:
                dev.location()

            if command_line.output_to_file:
                create_pickled_data(
                    dev,
                    filename=(
                        dev.content["name"].strip().lower() + ".fmip_snapshot"
                    )
                )

            contents = dev.content
            if command_line.longlist:
                print("-"*30)
                print(contents["name"])
                for x in contents:
                    print("%20s - %s" % (x, contents[x]))
            elif command_line.list:
                print("-"*30)
                print("Name - %s" % contents["name"])
                print("Display Name  - %s" % contents["deviceDisplayName"])
                print("Location      - %s" % contents["location"])
                print("Battery Level - %s" % contents["batteryLevel"])
                print("Battery Status- %s" % contents["batteryStatus"])
                print("Device Class  - %s" % contents["deviceClass"])
                print("Device Model  - %s" % contents["deviceModel"])

            #   Play a Sound on a device
            if command_line.sound:
                if command_line.device_id:
                    dev.play_sound()
                else:
                    raise RuntimeError(
                        "\n\n\t\t%s %s\n\n" % (
                            "Sounds can only be played on a singular device.",
                            DEVICE_ERROR
                        )
                    )

            #   Display a Message on the device
            if command_line.message:
                if command_line.device_id:
                    dev.display_message(
                        subject='A Message',
                        message=command_line.message,
                        sounds=True
                    )
                else:
                    raise RuntimeError(
                        "%s %s" % (
                            "Messages can only be played "
                            "on a singular device.",
                            DEVICE_ERROR
                        )
                    )

            #   Display a Silent Message on the device
            if command_line.silentmessage:
                if command_line.device_id:
                    dev.display_message(
                        subject='A Silent Message',
                        message=command_line.silentmessage,
                        sounds=False
                    )
                else:
                    raise RuntimeError(
                        "%s %s" % (
                            "Silent Messages can only be played "
                            "on a singular device.",
                            DEVICE_ERROR
                        )
                    )

            #   Enable Lost mode
            if command_line.lostmode:
                if command_line.device_id:
                    dev.lost_device(
                        number=command_line.lost_phone.strip(),
                        text=command_line.lost_message.strip(),
                        newpasscode=command_line.lost_password.strip()
                    )
                else:
                    raise RuntimeError(
                        "%s %s" % (
                            "Lost Mode can only be activated "
                            "on a singular device.",
                            DEVICE_ERROR
                        )
                    )