"""
DateTime and Timezone Utilities

Modern, clean datetime and timezone handling for the bakery system.
Uses Python's built-in zoneinfo (Python 3.9+) for timezone operations.

Public API:
    Core operations (from core.py):
        - utc_now, now_in_timezone
        - to_utc, to_timezone
        - ensure_aware, ensure_naive
        - parse_iso, format_iso, format_custom
        - is_aware, validate_timezone

    Timezone operations (from timezone.py):
        - get_timezone_info, get_utc_offset_hours
        - list_supported_timezones
        - get_current_date_in_tz, get_current_datetime_in_tz
        - combine_date_time_in_tz
        - convert_to_utc, convert_from_utc

    Business logic (from business.py):
        - is_business_hours, next_business_day
        - get_business_day_range
        - get_tenant_now, is_tenant_business_hours

    Constants (from constants.py):
        - DEFAULT_TIMEZONE
        - SUPPORTED_TIMEZONES
        - BUSINESS_HOURS_DEFAULT
"""

from .core import (
    utc_now,
    now_in_timezone,
    to_utc,
    to_timezone,
    ensure_aware,
    ensure_naive,
    parse_iso,
    format_iso,
    format_custom,
    is_aware,
    validate_timezone,
)

from .timezone import (
    get_timezone_info,
    get_utc_offset_hours,
    list_supported_timezones,
    get_current_date_in_tz,
    get_current_datetime_in_tz,
    combine_date_time_in_tz,
    convert_to_utc,
    convert_from_utc,
)

from .business import (
    is_business_hours,
    next_business_day,
    get_business_day_range,
    get_tenant_now,
    is_tenant_business_hours,
)

from .constants import (
    DEFAULT_TIMEZONE,
    SUPPORTED_TIMEZONES,
    BUSINESS_HOURS_DEFAULT,
    ISO_FORMAT,
    DATE_FORMAT,
    TIME_FORMAT,
    DATETIME_FORMAT,
)

__all__ = [
    # Core operations
    "utc_now",
    "now_in_timezone",
    "to_utc",
    "to_timezone",
    "ensure_aware",
    "ensure_naive",
    "parse_iso",
    "format_iso",
    "format_custom",
    "is_aware",
    "validate_timezone",
    # Timezone operations
    "get_timezone_info",
    "get_utc_offset_hours",
    "list_supported_timezones",
    "get_current_date_in_tz",
    "get_current_datetime_in_tz",
    "combine_date_time_in_tz",
    "convert_to_utc",
    "convert_from_utc",
    # Business logic
    "is_business_hours",
    "next_business_day",
    "get_business_day_range",
    "get_tenant_now",
    "is_tenant_business_hours",
    # Constants
    "DEFAULT_TIMEZONE",
    "SUPPORTED_TIMEZONES",
    "BUSINESS_HOURS_DEFAULT",
    "ISO_FORMAT",
    "DATE_FORMAT",
    "TIME_FORMAT",
    "DATETIME_FORMAT",
]