from datetime import datetime, timezone
from enum import Enum
from typing import List

from sqlmodel import SQLModel, Field

from models.station import StationListResponse


def utc_now() -> datetime:
    return datetime.now(timezone.utc)

class MeasurementResolution(str, Enum):
    hourly = "hourly"
    daily = "daily"
    weekly = "weekly"
    monthly = "monthly"
    yearly = "yearly"


class IndoorMeasurement(SQLModel, table=True):
    id: int | None = Field(default=None, primary_key=True)
    station_id: int = Field(foreign_key="station.id")
    timestamp: datetime = Field(default_factory=utc_now)
    temperature: float | None= Field(default=None)
    humidity: float| None = Field(default=None)

class OutdoorMeasurement(SQLModel, table=True):
    id: int | None = Field(default=None, primary_key=True)
    station_id : int= Field(foreign_key="station.id")
    temperature: float| None = Field(default=None)
    humidity: float | None = Field(default=None)
    pressure: float| None = Field(default=None)
    timestamp: datetime = Field(default_factory=utc_now)

class IndoorMeasurementCreateRequest(SQLModel):
    mac: str
    temperature: float
    humidity: float


class OutdoorMeasurementCreateRequest(SQLModel):
    mac: str
    temperature: float
    humidity: float | None = None
    pressure: float | None = None

class MeasurementResponse(SQLModel):
    temperature: float
    humidity: float | None = None
    pressure: float | None = None
    timestamp: datetime

class StationMeasurementResponse(SQLModel):
    station: StationListResponse
    measurements: list[MeasurementResponse]
    indoor: bool

class MeasurementListResponse(SQLModel):
    stations: list[StationMeasurementResponse]