backend/terrain.py

from fastapi import APIRouter, HTTPException
import httpx

router = APIRouter()

# Route for extracting terrain data
@router.post("/api/terrain-data")
async def extract_terrain_data(latitude: float, longitude: float):
    """Extract terrain data such as slope or aspect from a given location"""
    try:
        # Example API call to a terrain data service (replace with actual service)
        url = f"https://api.example.com/terrain?latitude={latitude}&longitude={longitude}"
        
        async with httpx.AsyncClient() as client:
            response = await client.get(url)
            response.raise_for_status()
            data = response.json()
            
            # Extract relevant terrain data (e.g., slope, aspect)
            slope = data.get("slope")
            aspect = data.get("aspect")
            
            if slope is None or aspect is None:
                raise Exception("No terrain data found in API response")
            
            return {
                "latitude": latitude,
                "longitude": longitude,
                "slope": slope,
                "aspect": aspect
            }
    except httpx.HTTPStatusError as e:
        raise HTTPException(status_code=500, detail=f"Terrain API error: {str(e)}")
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))