import enum
from datetime import datetime, timezone
from sqlalchemy import String, Boolean, DateTime, ForeignKey, Enum as SAEnum, Integer
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.core.database import Base


class UserRole(str, enum.Enum):
    venditore = "venditore"
    valutatore = "valutatore"
    backoffice = "backoffice"
    operatore_perizie = "operatore_perizie"
    approvatore_perizie = "approvatore_perizie"
    admin = "admin"


class Group(Base):
    __tablename__ = "groups"

    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    name: Mapped[str] = mapped_column(String(100), nullable=False)
    description: Mapped[str | None] = mapped_column(String(255))
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
    )

    users: Mapped[list["User"]] = relationship("User", back_populates="group")


class User(Base):
    __tablename__ = "users"

    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    email: Mapped[str] = mapped_column(String(255), unique=True, nullable=False, index=True)
    full_name: Mapped[str] = mapped_column(String(200), nullable=False)
    hashed_password: Mapped[str] = mapped_column(String(255), nullable=False)
    role: Mapped[UserRole] = mapped_column(SAEnum(UserRole), nullable=False)
    group_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("groups.id"), nullable=True)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
    notify_email: Mapped[bool] = mapped_column(Boolean, default=True)
    notify_push: Mapped[bool] = mapped_column(Boolean, default=True)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        default=lambda: datetime.now(timezone.utc),
        onupdate=lambda: datetime.now(timezone.utc),
    )

    group: Mapped["Group | None"] = relationship("Group", back_populates="users")