Lovelace Migration Script

0migrator.md

Home Assistant Lovelace Migrator

Do you want to try out this experimental (!) new lovelace UI stuff in Home Assistant but don't want to migrate your entire configuration? This script is here to help! It reads in your Home Assistant configuration (specifically the group: section) and creates a matching ui-lovelace.yaml file in your Home Assistant configuration folder (of course backing up any previous file at that path).

To use this script, you first need to have python and home assistant installed where you plan to run this script. Do so using virtual environments and the pip3 install -U homeassistant command. Then copy below file to lovelace_migrate.py (any location should work) and run:

python3 lovelace_migrate.py -c <PATH_TO_HASS_CONFIG_DIR>

Then navigate to the dev-info page in your Home Assistant instance (last icon in the "Developer Tools" in the side panel) and press "Try out the new Lovelace UI (experimental)". You should now see your existing configuration in the lovelace UI format 🎉🎉🎉

🚨 This script is quite ugly code, but it should get the job done.

lovelace_migrate.py

#!/usr/bin/env python3

import argparse
import logging
import os
import shutil
import sys
from collections import OrderedDict

import homeassistant.core
from homeassistant.config import find_config_file, get_default_config_dir, load_yaml_config_file
from homeassistant.util import yaml

_LOGGER = logging.getLogger(__name__)
GROUP_CONFIG = None


def convert_all_group(obj_id):
    lovelace = OrderedDict()
    lookup = {
        'all_lights': 'light',
        'all_automations': 'automation',
        'all_devices': 'device_tracker',
        'all_fans': 'fan',
        'all_locks': 'lock',
        'all_covers': 'cover',
        'all_remotes': 'remote',
        'all_switches': 'switch',
        'all_vacuum_cleaners': 'vacuum',
        'all_scripts': 'script',
    }
    if obj_id not in lookup:
        _LOGGER.warning("Unknown group.all_* group 'group.{}'".format(obj_id))
        return None
    lovelace['type'] = 'entity-filter'
    lovelace['card_config'] = {'title': obj_id.replace('_', ' ').title()}
    lovelace['filter'] = [{'domain': lookup[obj_id]}]
    return lovelace


def convert_card(entity_id):
    domain, obj_id = entity_id.split('.')
    if domain == 'group':
        if obj_id not in GROUP_CONFIG:
            if obj_id.startswith('all_'):
                return convert_all_group(obj_id)
            _LOGGER.error("Couldn't find group with entity id {}".format(entity_id))
            return None
        return convert_group(GROUP_CONFIG[obj_id], entity_id)
    elif domain == 'camera':
        return OrderedDict([
            ('type', 'camera-preview'),
            ('entity', entity_id)
        ])
    elif domain == 'history_graph':
        return OrderedDict([
            ('type', 'history-graph'),
            ('entity', entity_id)
        ])
    elif domain == 'media_player':
        return OrderedDict([
            ('type', 'media-control'),
            ('entity', entity_id)
        ])
    elif domain == 'plant':
        return OrderedDict([
            ('type', 'plant-status'),
            ('entity', entity_id)
        ])
    elif domain == 'weather':
        return OrderedDict([
            ('type', 'weather-forecast'),
            ('entity', entity_id)
        ])
    _LOGGER.error("Cannot determine card type for entity id '{}'. Maybe it is unsupported?"
                  "".format(entity_id))
    return None


def convert_group(config, name):
    if config.get('view', False):
        _LOGGER.error("Cannot have view group '{}' inside another group".format(name))
        return None

    lovelace = OrderedDict()
    lovelace['type'] = 'entities'
    if 'name' in config:
        lovelace['title'] = config['name']
    entities = lovelace['entities'] = []
    extra_cards = []
    for entity_id in config.get('entities', []):
        domain, obj_id = entity_id.split('.')
        if domain in ['group', 'media_player', 'camera', 'history_graph',
                      'media_player', 'plant', 'weather']:
            _LOGGER.warning("Cannot have domain '{}' within a non-view group {}! "
                            "I will put it into the parent view-type group.".format(
                domain, name))
            card = convert_card(entity_id)
            if card is not None:
                extra_cards.append(card)
            continue
        entities.append(entity_id)
    return lovelace, extra_cards


def convert_view(config, name):
    lovelace = OrderedDict()
    if 'name' in config:
        lovelace['name'] = config['name']
    if 'icon' in config:
        lovelace['tab_icon'] = config['icon']
    cards = lovelace['cards'] = []
    for entity_id in config.get('entities', []):
        card = convert_card(entity_id)
        if card is None:
            continue
        if isinstance(card, tuple):
            cards.append(card[0])
            cards.extend(card[1])
        else:
            cards.append(card)

    return lovelace


def main():
    global GROUP_CONFIG

    logging.basicConfig(level=logging.INFO)

    try:
        from colorlog import ColoredFormatter
        logging.getLogger().handlers[0].setFormatter(ColoredFormatter(
            "%(log_color)s%(levelname)s %(message)s%(reset)s",
            datefmt="",
            reset=True,
            log_colors={
                'DEBUG': 'cyan',
                'INFO': 'green',
                'WARNING': 'yellow',
                'ERROR': 'red',
                'CRITICAL': 'red',
            }
        ))
    except ImportError:
        pass

    parser = argparse.ArgumentParser(
        description="Check Home Assistant configuration.")
    parser.add_argument(
        '-c', '--config',
        default=get_default_config_dir(),
        help="Directory that contains the Home Assistant configuration")

    args = parser.parse_args()

    config_dir = os.path.join(os.getcwd(), args.config)

    hass = homeassistant.core.HomeAssistant()
    hass.config.config_dir = config_dir

    config_path = find_config_file(config_dir)
    config = load_yaml_config_file(config_path)
    GROUP_CONFIG = config['group']
    name = config['homeassistant'].get('name', 'Home')
    lovelace = OrderedDict()
    lovelace['name'] = name
    views = lovelace['views'] = []

    if 'default_view' in GROUP_CONFIG:
        views.append(convert_view(GROUP_CONFIG['default_view'], 'default_view'))

    for name, conf in GROUP_CONFIG.items():
        if name == 'default_view':
            continue
        if not conf.get('view', False):
            continue
        views.append(convert_view(conf, name))

    views.append({
        'name': "All Entities",
        'tab_icon': "mdi:settings",
        'cards': [{
            'type': 'entity-filter',
            'filter': [{}],
            'card_config': {
                'title': 'All Entities'
            }
        }],
    })

    lovelace_path = os.path.join(config_dir, 'ui-lovelace.yaml')
    if os.path.exists(lovelace_path):
        i = 0
        while os.path.exists(lovelace_path + '.bkp.{}'.format(i)):
            i += 1
        bkp_path = lovelace_path + '.bkp.{}'.format(i)
        shutil.move(lovelace_path, bkp_path)
        _LOGGER.error("The lovelace configuration already exists under %s! "
                      "I will move it to %s", lovelace_path, bkp_path)
    with open(lovelace_path, 'w', encoding='utf-8') as f:
        f.write(yaml.dump(lovelace) + '\n')
    _LOGGER.info("Successfully migrated lovelace configuration to %s", lovelace_path)
    return 0


if __name__ == '__main__':
    sys.exit(main())

Add: sys.path.append('/usr/src/app')

Under:
import sys