supervisor/hassio/config.py

"""Bootstrap Hass.io."""
from datetime import datetime
import logging
import os
import re
from pathlib import Path, PurePath

import pytz

from .const import (
    FILE_HASSIO_CONFIG, HASSIO_DATA, ATTR_TIMEZONE, ATTR_ADDONS_CUSTOM_LIST,
    ATTR_LAST_BOOT, ATTR_WAIT_BOOT)
from .utils.dt import parse_datetime
from .utils.json import JsonConfig
from .validate import SCHEMA_HASSIO_CONFIG

_LOGGER = logging.getLogger(__name__)

HOMEASSISTANT_CONFIG = PurePath('homeassistant')

HASSIO_SSL = PurePath("ssl")

ADDONS_CORE = PurePath("addons/core")
ADDONS_LOCAL = PurePath("addons/local")
ADDONS_GIT = PurePath("addons/git")
ADDONS_DATA = PurePath("addons/data")

BACKUP_DATA = PurePath("backup")
SHARE_DATA = PurePath("share")
TMP_DATA = PurePath("tmp")
APPARMOR_DATA = PurePath("apparmor")

DEFAULT_BOOT_TIME = datetime.utcfromtimestamp(0).isoformat()

RE_TIMEZONE = re.compile(r"time_zone: (?P<timezone>[\w/\-+]+)")


class CoreConfig(JsonConfig):
    """Hold all core config data."""

    def __init__(self):
        """Initialize config object."""
        super().__init__(FILE_HASSIO_CONFIG, SCHEMA_HASSIO_CONFIG)

    @property
    def timezone(self):
        """Return system timezone."""
        config_file = Path(self.path_homeassistant, 'configuration.yaml')
        try:
            assert config_file.exists()
            configuration = config_file.read_text()

            data = RE_TIMEZONE.search(configuration)
            assert data

            timezone = data.group('timezone')
            pytz.timezone(timezone)
        except (pytz.exceptions.UnknownTimeZoneError, OSError, AssertionError):
            _LOGGER.debug("Can't parse Home Assistant timezone")
            return self._data[ATTR_TIMEZONE]

        return timezone

    @timezone.setter
    def timezone(self, value):
        """Set system timezone."""
        self._data[ATTR_TIMEZONE] = value

    @property
    def wait_boot(self):
        """Return wait time for auto boot stages."""
        return self._data[ATTR_WAIT_BOOT]

    @wait_boot.setter
    def wait_boot(self, value):
        """Set wait boot time."""
        self._data[ATTR_WAIT_BOOT] = value

    @property
    def last_boot(self):
        """Return last boot datetime."""
        boot_str = self._data.get(ATTR_LAST_BOOT, DEFAULT_BOOT_TIME)

        boot_time = parse_datetime(boot_str)
        if not boot_time:
            return datetime.utcfromtimestamp(1)
        return boot_time

    @last_boot.setter
    def last_boot(self, value):
        """Set last boot datetime."""
        self._data[ATTR_LAST_BOOT] = value.isoformat()

    @property
    def path_hassio(self):
        """Return Hass.io data path."""
        return HASSIO_DATA

    @property
    def path_extern_hassio(self):
        """Return Hass.io data path external for Docker."""
        return PurePath(os.environ['SUPERVISOR_SHARE'])

    @property
    def path_extern_homeassistant(self):
        """Return config path external for Docker."""
        return str(PurePath(self.path_extern_hassio, HOMEASSISTANT_CONFIG))

    @property
    def path_homeassistant(self):
        """Return config path inside supervisor."""
        return Path(HASSIO_DATA, HOMEASSISTANT_CONFIG)

    @property
    def path_extern_ssl(self):
        """Return SSL path external for Docker."""
        return str(PurePath(self.path_extern_hassio, HASSIO_SSL))

    @property
    def path_ssl(self):
        """Return SSL path inside supervisor."""
        return Path(HASSIO_DATA, HASSIO_SSL)

    @property
    def path_addons_core(self):
        """Return git path for core Add-ons."""
        return Path(HASSIO_DATA, ADDONS_CORE)

    @property
    def path_addons_git(self):
        """Return path for Git Add-on."""
        return Path(HASSIO_DATA, ADDONS_GIT)

    @property
    def path_addons_local(self):
        """Return path for custom Add-ons."""
        return Path(HASSIO_DATA, ADDONS_LOCAL)

    @property
    def path_extern_addons_local(self):
        """Return path for custom Add-ons."""
        return PurePath(self.path_extern_hassio, ADDONS_LOCAL)

    @property
    def path_addons_data(self):
        """Return root Add-on data folder."""
        return Path(HASSIO_DATA, ADDONS_DATA)

    @property
    def path_extern_addons_data(self):
        """Return root add-on data folder external for Docker."""
        return PurePath(self.path_extern_hassio, ADDONS_DATA)

    @property
    def path_tmp(self):
        """Return Hass.io temp folder."""
        return Path(HASSIO_DATA, TMP_DATA)

    @property
    def path_extern_tmp(self):
        """Return Hass.io temp folder for Docker."""
        return PurePath(self.path_extern_hassio, TMP_DATA)

    @property
    def path_backup(self):
        """Return root backup data folder."""
        return Path(HASSIO_DATA, BACKUP_DATA)

    @property
    def path_extern_backup(self):
        """Return root backup data folder external for Docker."""
        return PurePath(self.path_extern_hassio, BACKUP_DATA)

    @property
    def path_share(self):
        """Return root share data folder."""
        return Path(HASSIO_DATA, SHARE_DATA)

    @property
    def path_apparmor(self):
        """Return root Apparmor profile folder."""
        return Path(HASSIO_DATA, APPARMOR_DATA)

    @property
    def path_extern_share(self):
        """Return root share data folder external for Docker."""
        return PurePath(self.path_extern_hassio, SHARE_DATA)

    @property
    def addons_repositories(self):
        """Return list of custom Add-on repositories."""
        return self._data[ATTR_ADDONS_CUSTOM_LIST]

    def add_addon_repository(self, repo):
        """Add a custom repository to list."""
        if repo in self._data[ATTR_ADDONS_CUSTOM_LIST]:
            return

        self._data[ATTR_ADDONS_CUSTOM_LIST].append(repo)

    def drop_addon_repository(self, repo):
        """Remove a custom repository from list."""
        if repo not in self._data[ATTR_ADDONS_CUSTOM_LIST]:
            return

        self._data[ATTR_ADDONS_CUSTOM_LIST].remove(repo)