import uuid

from sqlalchemy import Enum, ForeignKey, String
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.models.base import Base, TimestampMixin, UUIDPrimaryKeyMixin
from app.models.department import Department
from app.models.enums import UserRole


class User(UUIDPrimaryKeyMixin, TimestampMixin, Base):
    __tablename__ = "users"

    email: Mapped[str] = mapped_column(String(320), unique=True, index=True)
    name: Mapped[str] = mapped_column(String(200))
    role: Mapped[UserRole] = mapped_column(
        Enum(UserRole, native_enum=False, length=32), default=UserRole.member
    )
    password_hash: Mapped[str] = mapped_column(String(255))
    # Interface language. NULL follows the browser's Accept-Language; a value
    # pins it. One column rather than a preferences table: this is the only
    # preference that has to follow the person across devices — the theme is
    # per-device and lives in localStorage.
    locale: Mapped[str | None] = mapped_column(String(5))
    department_id: Mapped[uuid.UUID | None] = mapped_column(
        ForeignKey("departments.id", ondelete="SET NULL")
    )

    department: Mapped[Department | None] = relationship(lazy="joined")