import uuid
from datetime import datetime
from pydantic import BaseModel


class GpsPoint(BaseModel):
    lat: float
    lon: float
    timestamp: datetime | None = None
    altitude: float | None = None
    hdop: float | None = None


class ActivityCreate(BaseModel):
    type: str  # run | cycle | walk | hike
    started_at: datetime
    ended_at: datetime
    gps_track: list[GpsPoint]


class ActivityRead(BaseModel):
    id: uuid.UUID
    user_id: uuid.UUID
    type: str
    started_at: datetime | None
    ended_at: datetime | None
    distance_m: float | None
    status: str
    created_at: datetime


class ActivityDetail(ActivityRead):
    """Activity with zone info attached."""

    zone_id: uuid.UUID | None = None
    area_m2: float | None = None