"""监控接口只暴露固定白名单，不传输内部异常或连接配置。"""

from datetime import datetime
from typing import Annotated, Literal

from pydantic import BaseModel, BeforeValidator, ConfigDict, Field

from app.core.response import PageQuery

Status = Literal["normal", "warning", "error", "unknown"]
Hours = Annotated[
    Literal[1, 24, 168],
    BeforeValidator(lambda value: int(value) if value in ("1", "24", "168") else value),
]


class MonitorWindow(BaseModel):
    hours: Hours = 1
    end: datetime | None = None
    route: str | None = Field(default=None, max_length=256)


class EventQuery(PageQuery):
    hours: Hours = 24
    end: datetime | None = None
    route: str | None = Field(default=None, max_length=256)
    kind: Literal["HEALTH", "REQUEST_ERROR", "SLOW_REQUEST", "RUNTIME_ERROR"] | None = None
    request_id: str | None = Field(default=None, pattern=r"^[a-f0-9]{32}$")
    active_only: bool = False


class EventOut(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    instance_id: str
    kind: str
    code: str
    component: str
    level: str
    message: str
    request_id: str | None = None
    method: str | None = None
    route: str | None = None
    status_code: int | None = None
    duration_ms: float | None = None
    batch_no: str | None = None
    first_seen: datetime
    last_seen: datetime
    occurrences: int
    resolved_at: datetime | None = None


class DependencyOut(BaseModel):
    name: str
    status: Status
    message: str
    checked_at: datetime | None = None
    duration_ms: float | None = None


class OverviewOut(BaseModel):
    status: Status
    environment: str
    version: str
    instance_id: str
    uptime_seconds: int
    collected_at: datetime | None
    last_persisted_at: datetime | None
    collection_status: Status
    collection_message: str
    resources: dict
    requests: dict
    dependencies: list[DependencyOut]
    alerts: list[EventOut]
    tasks: dict
    dropped_events: int
    retention_days: int = 7