from __future__ import annotations

from fastapi import APIRouter, Depends, Query

from app.models.schemas import ElevationProfilePoint, ElevationProfileResponse
from app.services.link_calculator import LinkCalculator

router = APIRouter(prefix="/v1", tags=["elevation"])


def get_link_calculator() -> LinkCalculator:
  from app.main import link_calculator

  return link_calculator


@router.get("/elevation-profile", response_model=ElevationProfileResponse)
async def elevation_profile(
  from_lat: float = Query(..., ge=-90, le=90),
  from_lng: float = Query(..., ge=-180, le=180),
  to_lat: float = Query(..., ge=-90, le=90),
  to_lng: float = Query(..., ge=-180, le=180),
  step_m: float = Query(default=30.0, gt=0),
  calculator: LinkCalculator = Depends(get_link_calculator),
) -> ElevationProfileResponse:
  distance_m, profile = await calculator.elevation_profile(
    from_lat,
    from_lng,
    to_lat,
    to_lng,
    step_m,
  )
  return ElevationProfileResponse(
    distance_m=distance_m,
    path_profile=[ElevationProfilePoint(**point) for point in profile],
  )