"""Geocode endpoints — debug + frontend Suggest proxy."""

from __future__ import annotations

import logging
from typing import Annotated

from fastapi import APIRouter, Depends, HTTPException, Query
from pydantic import BaseModel
from sqlalchemy.orm import Session

from app.core.db import get_db
from app.services.geocoder import GeocodeResult, geocode, reverse_geocode, suggest

logger = logging.getLogger(__name__)

router = APIRouter()


@router.get("/lookup", response_model=GeocodeResult)
async def lookup(
    address: Annotated[str, Query(min_length=3, max_length=500)],
    db: Annotated[Session, Depends(get_db)],
) -> GeocodeResult:
    """Геокодинг адреса → lat/lon.

    Примеры:
      /api/v1/geocode/lookup?address=ул.+Малышева+30+Екатеринбург
      /api/v1/geocode/lookup?address=Куйбышева+50+Екатеринбург
    """
    result = await geocode(address, db)
    if result is None:
        raise HTTPException(status_code=404, detail=f"Address not found: {address}")
    return result


class SuggestItem(BaseModel):
    label: str
    full_address: str
    lat: float
    lon: float
    kind: str


class SuggestResponse(BaseModel):
    items: list[SuggestItem]


@router.get("/suggest", response_model=SuggestResponse)
async def suggest_addresses(
    q: Annotated[str, Query(min_length=2, max_length=200, description="Запрос для автокомплита")],
    limit: Annotated[int, Query(ge=1, le=15)] = 8,
) -> SuggestResponse:
    """Автокомплит адресов в пределах ЕКБ.

    Используется в EstimateForm для подсказок пока пользователь печатает.
    Bounded viewbox = ЕКБ (lon 60.40-60.85, lat 56.65-56.95).

    Пример:
      /api/v1/geocode/suggest?q=Малышева
      /api/v1/geocode/suggest?q=Цвиллинга  # → пусто, такой улицы в ЕКБ нет
    """
    items = await suggest(q, limit=limit)
    return SuggestResponse(items=[
        SuggestItem(
            label=s.label,
            full_address=s.full_address,
            lat=s.lat, lon=s.lon, kind=s.kind,
        ) for s in items
    ])


@router.get("/reverse")
async def reverse(
    lat: Annotated[float, Query(ge=-90, le=90)],
    lon: Annotated[float, Query(ge=-180, le=180)],
) -> dict[str, object]:
    """Обратный геокодинг — координаты с карты → адрес (map-picker).

    Пример: /api/v1/geocode/reverse?lat=56.8389&lon=60.6057
    """
    address = await reverse_geocode(lat, lon)
    if address is None:
        raise HTTPException(status_code=404, detail="address not found for coordinates")
    return {"address": address, "lat": lat, "lon": lon}