"""Alert models — rules and history."""

import uuid
from datetime import datetime, timezone

from sqlalchemy import String, Integer, Float, Boolean, DateTime, Text, Enum as SAEnum
from sqlalchemy.orm import Mapped, mapped_column
import enum

from app.database import Base


class AlertLevel(str, enum.Enum):
    INFO = "info"
    WARNING = "warning"
    CRITICAL = "critical"


class AlertOperator(str, enum.Enum):
    GT = "gt"
    GTE = "gte"
    LT = "lt"
    LTE = "lte"
    EQ = "eq"


class AlertRule(Base):
    __tablename__ = "alert_rules"

    id: Mapped[str] = mapped_column(
        String(36), primary_key=True, default=lambda: str(uuid.uuid4())
    )
    project_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
    name: Mapped[str] = mapped_column(String(128), nullable=False)
    level: Mapped[AlertLevel] = mapped_column(
        SAEnum(AlertLevel), default=AlertLevel.WARNING
    )
    field: Mapped[str] = mapped_column(
        String(64), nullable=False, default="level"
    )  # log field to evaluate
    operator: Mapped[AlertOperator] = mapped_column(
        SAEnum(AlertOperator), default=AlertOperator.GTE
    )
    threshold: Mapped[float] = mapped_column(Float, nullable=False)
    window_minutes: Mapped[int] = mapped_column(Integer, default=5)
    is_enabled: Mapped[bool] = mapped_column(Boolean, default=True)
    notify_channels: Mapped[str] = mapped_column(
        String(256), default=""
    )  # comma-separated
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
    )


class AlertHistory(Base):
    __tablename__ = "alert_history"

    id: Mapped[str] = mapped_column(
        String(36), primary_key=True, default=lambda: str(uuid.uuid4())
    )
    rule_id: Mapped[str] = mapped_column(
        String(36), nullable=False, index=True
    )
    project_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
    level: Mapped[AlertLevel] = mapped_column(SAEnum(AlertLevel))
    message: Mapped[str] = mapped_column(Text, nullable=False)
    triggered_value: Mapped[float] = mapped_column(Float, nullable=True)
    is_acknowledged: Mapped[bool] = mapped_column(Boolean, default=False)
    triggered_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
    )