"""SQLAlchemy ORM models for users and duties."""

from sqlalchemy import ForeignKey, Integer, BigInteger, Text
from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, relationship


class Base(DeclarativeBase):
    """Declarative base for all models."""

    pass


class User(Base):
    __tablename__ = "users"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    telegram_user_id: Mapped[int | None] = mapped_column(
        BigInteger, unique=True, nullable=True
    )
    full_name: Mapped[str] = mapped_column(Text, nullable=False)
    username: Mapped[str | None] = mapped_column(Text, nullable=True)
    first_name: Mapped[str | None] = mapped_column(Text, nullable=True)
    last_name: Mapped[str | None] = mapped_column(Text, nullable=True)
    phone: Mapped[str | None] = mapped_column(Text, nullable=True)

    duties: Mapped[list["Duty"]] = relationship("Duty", back_populates="user")


class Duty(Base):
    __tablename__ = "duties"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    user_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("users.id"), nullable=False
    )
    # UTC, ISO 8601 with Z suffix (e.g. 2025-01-15T09:00:00Z)
    start_at: Mapped[str] = mapped_column(Text, nullable=False)
    end_at: Mapped[str] = mapped_column(Text, nullable=False)
    # duty | unavailable | vacation
    event_type: Mapped[str] = mapped_column(Text, nullable=False, server_default="duty")

    user: Mapped["User"] = relationship("User", back_populates="duties")


class GroupDutyPin(Base):
    """Stores which message to update in each group for the pinned duty notice."""

    __tablename__ = "group_duty_pins"

    chat_id: Mapped[int] = mapped_column(BigInteger, primary_key=True)
    message_id: Mapped[int] = mapped_column(Integer, nullable=False)