lekss361
0efd2dca1d
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101 lines
3.2 KiB
Python
101 lines
3.2 KiB
Python
"""Cadastral lookup endpoints — reverse geocode via cad_buildings.
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Used by trade-in backend (and potentially other internal services) to resolve
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координаты → адрес жилого дома без зависимости от внешних геокодеров.
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"""
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from __future__ import annotations
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import logging
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from typing import Annotated
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from fastapi import APIRouter, Depends, HTTPException, Query
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from pydantic import BaseModel
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from sqlalchemy import text
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from sqlalchemy.orm import Session
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from app.core.db import get_db
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logger = logging.getLogger(__name__)
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router = APIRouter()
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class CadastralReverseResult(BaseModel):
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address: str
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lat: float
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lon: float
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distance_m: float
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cad_num: str | None = None
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@router.get("/reverse", response_model=CadastralReverseResult)
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async def reverse(
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lat: Annotated[float, Query(ge=-90, le=90)],
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lon: Annotated[float, Query(ge=-180, le=180)],
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radius_m: Annotated[int, Query(ge=10, le=2000)] = 200,
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db: Annotated[Session, Depends(get_db)] = None, # type: ignore[assignment]
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) -> CadastralReverseResult:
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"""Координаты → ближайшее здание из cad_buildings.
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Filters out гаражи/СНТ/садовод/товарищества — для trade-in нужны жилые дома.
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Returns 404 если в радиусе нет подходящего здания.
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"""
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row = db.execute(
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text(
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"""
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SELECT
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readable_address,
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cad_num,
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ST_Y(ST_Centroid(geom)) AS lat,
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ST_X(ST_Centroid(geom)) AS lon,
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ST_Distance(
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geom::geography,
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ST_SetSRID(
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ST_MakePoint(
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CAST(:lon AS double precision),
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CAST(:lat AS double precision)
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),
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4326
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)::geography
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) AS distance_m
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FROM cad_buildings
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WHERE ST_DWithin(
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geom::geography,
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ST_SetSRID(
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ST_MakePoint(
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CAST(:lon AS double precision),
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CAST(:lat AS double precision)
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),
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4326
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)::geography,
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CAST(:radius AS double precision)
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)
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AND readable_address !~* '(гараж|снт|садовод|товарищ|уч\\.)'
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ORDER BY ST_Distance(
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geom::geography,
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ST_SetSRID(
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ST_MakePoint(
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CAST(:lon AS double precision),
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CAST(:lat AS double precision)
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),
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4326
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)::geography
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)
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LIMIT 1
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"""
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),
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{"lat": lat, "lon": lon, "radius": float(radius_m)},
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).first()
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if row is None:
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raise HTTPException(status_code=404, detail="no cadastral building found within radius")
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return CadastralReverseResult(
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address=row.readable_address,
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lat=float(row.lat),
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lon=float(row.lon),
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distance_m=round(float(row.distance_m), 1),
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cad_num=row.cad_num,
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)
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