import json
import logging
import uuid
from datetime import datetime
import logging
import click

from iottb.utils.string_processing import make_canonical_name

logger = logging.getLogger(__name__)


class DeviceMetadata:
    def __init__(self, device_name, description="", model="", manufacturer="", firmware_version="", device_type="",
                 supported_interfaces="", companion_applications="", save_to_file=None, aliases=None):
        self.device_id = str(uuid.uuid4())
        self.device_name = device_name
        cn, default_aliases = make_canonical_name(device_name)
        logger.debug(f'cn, default aliases = {cn}, {str(default_aliases)}')
        self.aliases = default_aliases if aliases is None else default_aliases + aliases
        self.canonical_name = cn
        self.date_added = datetime.now().isoformat()
        self.description = description
        self.model = model
        self.manufacturer = manufacturer
        self.current_firmware_version = firmware_version
        self.device_type = device_type
        self.supported_interfaces = supported_interfaces
        self.companion_applications = companion_applications
        self.last_metadata_update = datetime.now().isoformat()
        if save_to_file is not None:
            click.echo('TODO: Implement saving config to file after creation!')

    def add_alias(self, alias: str = ""):
        if alias == "":
            return
        self.aliases.append(alias)

    def get_canonical_name(self):
        return self.canonical_name

    def print_attributes(self):
        print(f'Printing attribute value pairs in {__name__}')
        for attr, value in self.__dict__.items():
            print(f'{attr}: {value}')

    def save_metadata_to_file(self, metadata_path):
        with open(metadata_path, 'w') as metadata_file:
            json.dump(self.__dict__, metadata_file, indent=4)
        click.echo(f'Metadata saved to {metadata_path}')