from pydantic import BaseModel, field_validator


class GPSPoint(BaseModel):
    lat: float
    lon: float

    @field_validator("lat")
    @classmethod
    def validate_lat(cls, v: float) -> float:
        if not -90 <= v <= 90:
            raise ValueError("Latitude must be between -90 and 90")
        return v

    @field_validator("lon")
    @classmethod
    def validate_lon(cls, v: float) -> float:
        if not -180 <= v <= 180:
            raise ValueError("Longitude must be between -180 and 180")
        return v