from fastapi import APIRouter, Request, HTTPException
from fastapi.responses import HTMLResponse
import api_client
import config

router = APIRouter()


@router.get("/crop", response_class=HTMLResponse)
async def crop_ui(request: Request, pc_id: str):
    """Interface utilisateur pour le crop du nuage de points"""
    embed_url = f"{config.BACKEND_URL}/viewer-embed/{pc_id}"
    return request.app.state.templates.TemplateResponse(
        "partials/crop.html",
        {"request": request, "pc_id": pc_id, "embed_url": embed_url},
    )


@router.post("/crop", response_class=HTMLResponse)
async def crop(request: Request, pc_id: str, box: dict):
    """
    Traite la requête de crop :
    1. Envoie la box 3D au backend
    2. Le backend utilise PDAL pour cropper le nuage
    3. Retourne le nouveau pc_id pour l'affichage
    """
    try:
        # Envoi de la requête de crop au backend
        result = await api_client.crop_pointcloud(pc_id, box)
        
        if result.get("ok"):
            new_pc_id = result.get("id")
            return request.app.state.templates.TemplateResponse(
                "partials/upload_result.html",
                {"request": request, "result": {
                    "id": new_pc_id,
                    "filename": f"{pc_id}_cropped.las",
                    "size_mb": result.get("size_mb", 0),
                    "conversion_time_seconds": result.get("conversion_time_seconds", 0),
                }, "error": None},
            )
        else:
            return request.app.state.templates.TemplateResponse(
                "partials/upload_result.html",
                {"request": request, "error": result.get("detail", "Erreur inconnue"), "result": None},
            )
    except Exception as e:
        return request.app.state.templates.TemplateResponse(
            "partials/upload_result.html",
            {"request": request, "error": str(e), "result": None},
        )