"""Pydantic schemas for API and validation."""
from pydantic import BaseModel, ConfigDict


class UserBase(BaseModel):
    full_name: str
    username: str | None = None
    first_name: str | None = None
    last_name: str | None = None


class UserCreate(UserBase):
    telegram_user_id: int


class UserInDb(UserBase):
    id: int
    telegram_user_id: int

    model_config = ConfigDict(from_attributes=True)


class DutyBase(BaseModel):
    user_id: int
    start_at: str  # ISO 8601
    end_at: str    # ISO 8601


class DutyCreate(DutyBase):
    pass


class DutyInDb(DutyBase):
    id: int

    model_config = ConfigDict(from_attributes=True)


class DutyWithUser(DutyInDb):
    """Duty with full_name for calendar display."""
    full_name: str

    model_config = ConfigDict(from_attributes=True)