from __future__ import annotations

from enum import StrEnum


class MealPattern(StrEnum):
    """High-level eating pattern for planning defaults."""

    BD_ONLY = "bd_only"
    THREE_MEALS = "three_meals"
    OMAD = "omad"


class MealSlot(StrEnum):
    """Meal slot labels used in plans and logs."""

    BREAKFAST = "breakfast"
    LUNCH = "lunch"
    DINNER = "dinner"
    SNACK = "snack"
    BRUNCH = "brunch"
    DESSERT = "dessert"


class MealLogSource(StrEnum):
    """Whether a log came from a planned meal or manual entry."""

    MANUAL = "manual"
    PLANNED = "planned"


class DisplayWeightUnit(StrEnum):
    """UI and chart unit for loads and body weight (storage remains kg)."""

    KG = "kg"
    LB = "lb"


class DisplayDistanceUnit(StrEnum):
    """UI unit for running distance (storage remains km)."""

    KM = "km"
    MI = "mi"