"""Alert schemas."""

from datetime import datetime
from typing import List, Optional

from pydantic import BaseModel, Field


# ── Alert Rule ─────────────────────────────────────────────────


class AlertRuleCreate(BaseModel):
    project_id: str = Field(..., min_length=1, max_length=36)
    name: str = Field(..., min_length=1, max_length=128)
    level: str = Field(default="warning", pattern="^(info|warning|critical)$")
    field: str = Field(default="level", max_length=64)
    operator: str = Field(default="gte", pattern="^(gt|gte|lt|lte|eq)$")
    threshold: float = Field(..., ge=0)
    window_minutes: int = Field(default=5, ge=1, le=1440)
    notify_channels: List[str] = Field(default_factory=list)


class AlertRuleUpdate(BaseModel):
    name: Optional[str] = Field(default=None, max_length=128)
    level: Optional[str] = Field(default=None, pattern="^(info|warning|critical)$")
    field: Optional[str] = Field(default=None, max_length=64)
    operator: Optional[str] = Field(default=None, pattern="^(gt|gte|lt|lte|eq)$")
    threshold: Optional[float] = Field(default=None, ge=0)
    window_minutes: Optional[int] = Field(default=None, ge=1, le=1440)
    is_enabled: Optional[bool] = None
    notify_channels: Optional[List[str]] = None


class AlertRuleResponse(BaseModel):
    id: str
    project_id: str
    name: str
    level: str
    field: str
    operator: str
    threshold: float
    window_minutes: int
    is_enabled: bool
    notify_channels: List[str]
    created_at: datetime

    model_config = {"from_attributes": True}


# ── Alert History ──────────────────────────────────────────────


class AlertHistoryResponse(BaseModel):
    id: str
    rule_id: str
    project_id: str
    level: str
    message: str
    triggered_value: Optional[float] = None
    is_acknowledged: bool
    triggered_at: datetime

    model_config = {"from_attributes": True}