from datetime import datetime

from pydantic import BaseModel, Field


class WeatherDataIn(BaseModel):
    """Payload accepted by POST /data."""

    station_name: str = Field(..., description="Name of the weather station")
    temperature: float | None = Field(None, description="Temperature in Celsius")
    pressure: float | None = Field(None, description="Atmospheric pressure in hPa")
    relative_humidity: float | None = Field(
        None, description="Relative humidity in percent (0-100)"
    )


class WeatherRecordOut(BaseModel):
    """Record returned by the API (includes server-assigned fields)."""

    id: int
    station_name: str
    temperature: float | None
    pressure: float | None
    relative_humidity: float | None
    received_at: datetime


class WeatherHistoryResponse(BaseModel):
    """Wrapper for history queries — always returns a list (empty if no data)."""

    station_name: str
    records: list[WeatherRecordOut]