from datetime import datetime, timezone
from decimal import Decimal
from sqlalchemy import String, Boolean, DateTime, DECIMAL, Integer, Text, ForeignKey
from sqlalchemy.orm import Mapped, mapped_column
from app.core.database import Base


class Notification(Base):
    __tablename__ = "notifications"

    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    user_id: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
    title: Mapped[str] = mapped_column(String(200), nullable=False)
    body: Mapped[str | None] = mapped_column(Text)
    link: Mapped[str | None] = mapped_column(String(500))
    is_read: Mapped[bool] = mapped_column(Boolean, default=False)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
    )


class AlertConfig(Base):
    __tablename__ = "alert_config"

    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    key: Mapped[str] = mapped_column(String(100), unique=True, nullable=False)
    value: Mapped[str] = mapped_column(String(255), nullable=False)
    description: Mapped[str | None] = mapped_column(String(500))
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        default=lambda: datetime.now(timezone.utc),
        onupdate=lambda: datetime.now(timezone.utc),
    )