from datetime import UTC, datetime
from enum import StrEnum
from uuid import UUID, uuid4

from pydantic import AnyHttpUrl, BaseModel, ConfigDict, Field


class State(StrEnum):
    UNKNOWN = "unknown"
    UP = "up"
    DOWN = "down"
    ERROR = "error"


class MonitorCreate(BaseModel):
    name: str = Field(min_length=1, max_length=100)
    url: AnyHttpUrl


class MonitorUpdate(BaseModel):
    name: str | None = Field(default=None, min_length=1, max_length=100)
    url: AnyHttpUrl | None = None


class CurrentStatus(BaseModel):
    state: State = State.UNKNOWN
    checked_at: datetime | None = None
    status_code: int | None = None
    latency_ms: float | None = Field(default=None, ge=0)
    error: str | None = None


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

    id: UUID = Field(default_factory=uuid4)
    name: str
    url: AnyHttpUrl
    created_at: datetime = Field(default_factory=lambda: datetime.now(UTC))
    updated_at: datetime = Field(default_factory=lambda: datetime.now(UTC))
    current_status: CurrentStatus = Field(default_factory=CurrentStatus)