bot-backend
e63bdd9c65
Cian и Avito делили один мобильный IP (scraper_proxy_url) → конкуренция за egress → взаимные таймауты/баны при параллельных прогонах. Вводит settings.cian_proxy_url (CIAN_PROXY_URL, fallback на scraper_proxy_url) + cian_proxy_rotate_url; все 5 Cian-прокси-точек переключены. Avito/прочие не затронуты.
555 lines
26 KiB
Python
555 lines
26 KiB
Python
"""Cian.ru scraper — state-based SERP parser (137 fields per offer).
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Стратегия (Stage 3 рефактор):
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- Cian React micro-frontends хранят state в window._cianConfig['frontend-serp'].push().
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- URL pattern: https://ekb.cian.ru/cat.php?deal_type=sale&offer_type=flat&engine_version=2
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ekb.cian.ru — city-specific subdomain для ЕКБ (per Schema_Cian_SERP_Inventory sec 13).
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ВАЖНО: Циан блокирует httpx по TLS fingerprint → "Обнаружен подозрительный трафик" (403).
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Используем curl_cffi с impersonate='chrome120' — это libcurl-impersonate под капотом,
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который воспроизводит TLS ClientHello как настоящий Chrome.
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НЕ используем anchor jitter: offer.geo.coordinates.{lat,lng} — точные координаты
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прямо из SERP state. Jitter запрещён per implementation plan.
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"""
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from __future__ import annotations
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import hashlib
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import logging
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from datetime import UTC, datetime
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from typing import Any
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from urllib.parse import urlencode
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import sentry_sdk
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from curl_cffi.requests import AsyncSession
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from app.core.config import settings
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from app.services.scraper_settings import get_scraper_delay
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from app.services.scrapers.base import BaseScraper, ScrapedLot
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from app.services.scrapers.cian_state_parser import extract_state
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from app.services.scrapers.repair_state_normalizer import (
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infer_repair_state_from_text,
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normalize_repair_state,
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)
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logger = logging.getLogger(__name__)
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# Регион 4743 = Свердловская область (Cian internal region ID)
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CIAN_EKB_REGION_ID = 4743
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# SERP MFE name и state key (per Schema sec 1.2)
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_MFE_SERP = "frontend-serp"
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_STATE_KEY = "initialState"
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class CianScraper(BaseScraper):
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"""Cian SERP scraper. Использует curl_cffi для обхода TLS fingerprint.
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Извлекает 137 полей на offer из Redux initialState через cian_state_parser.
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Координаты точные — НЕТ anchor jitter (offer.geo.coordinates).
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"""
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name = "cian"
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# ekb.cian.ru — city-specific subdomain для ЕКБ (per Schema sec 13, closed Q4)
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base_url = "https://ekb.cian.ru"
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# Класс-дефолт; реальное значение загружается из scraper_settings при создании экземпляра.
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request_delay_sec = 5.0 # консервативно: Cian менее агрессивен чем Avito, но 5s безопасно
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def __init__(self) -> None:
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super().__init__()
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self.request_delay_sec = get_scraper_delay(self.name)
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self._cffi: AsyncSession | None = None
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async def __aenter__(self) -> CianScraper:
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await super().__aenter__()
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# curl_cffi session с Chrome 120 TLS fingerprint — КРИТИЧЕСКИ ВАЖНО для Cian.
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# proxies: mobile-proxy egress (#806) — аналогично Avito (#623). Без прокси
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# datacenter-IP блокируется Cian (403/captcha) несмотря на валидные cookies.
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# Пусто (SCRAPER_PROXY_URL/AVITO_PROXY_URL не заданы) → прямое подключение (dev).
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_proxy_url = settings.cian_proxy_url
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_proxies = {"http": _proxy_url, "https": _proxy_url} if _proxy_url else None
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self._cffi = AsyncSession(
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impersonate="chrome120",
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timeout=30,
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proxies=_proxies,
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headers={
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"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
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"Accept-Language": "ru-RU,ru;q=0.9,en;q=0.8",
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"Cache-Control": "max-age=0",
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"Sec-Fetch-Dest": "document",
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"Sec-Fetch-Mode": "navigate",
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"Sec-Fetch-Site": "none",
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"Sec-Fetch-User": "?1",
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"Upgrade-Insecure-Requests": "1",
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},
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)
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# Warm-up: посетить homepage чтобы получить сессионные cookies (_CIAN_GK/_yasc)
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# и не выглядеть как наглый бот (первый запрос сразу на /cat.php подозрителен).
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# Failure не критична — SERP-запросы продолжатся в любом случае.
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try:
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_warm = await self._cffi.get(f"{self.base_url}/")
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logger.info(
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"cian warm-up GET / → HTTP %d (cookies=%d)",
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_warm.status_code,
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len(list(self._cffi.cookies.jar)),
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)
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# Последующие SERP-запросы выглядят как in-site navigation (Referer = /)
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self._cffi.headers.update(
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{
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"Referer": f"{self.base_url}/",
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"Sec-Fetch-Site": "same-origin",
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}
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)
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except Exception:
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logger.warning("cian warm-up GET / failed — continuing without seed cookies")
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return self
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async def __aexit__(self, *args: Any) -> None:
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if self._cffi is not None:
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await self._cffi.close()
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await super().__aexit__(*args)
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async def fetch_around(
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self,
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lat: float,
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lon: float,
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radius_m: int = 1000,
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rooms: tuple[int, ...] | None = None,
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page: int = 1,
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) -> list[ScrapedLot]:
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"""Найти объявления Циан по ЕКБ (lat/lon для reference; Cian не поддерживает bbox).
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Cian SERP отдаёт весь ЕКБ — фильтрация по радиусу происходит в postgres
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через ST_DWithin после сохранения (точные coords из state).
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rooms — список из 1,2,3,4 (Cian's room codes). Если None — все.
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page — страница выдачи (Cian ~28 объявлений на страницу).
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"""
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url = self._build_url(rooms, page)
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try:
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assert self._cffi is not None
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response = await self._cffi.get(url)
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except Exception:
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logger.exception("cian curl_cffi fetch failed for url=%s", url)
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return []
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if response.status_code != 200:
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logger.warning("cian returned HTTP %d for url=%s", response.status_code, url)
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return []
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lots = self._parse_serp_html(response.text)
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logger.info(
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"cian: %d lots fetched rooms=%s page=%d url=%s",
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len(lots),
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rooms,
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page,
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url,
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)
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await self.sleep_between_requests()
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return lots
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async def fetch_around_multi_room(
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self,
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lat: float,
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lon: float,
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radius_m: int = 1000,
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pages: int = 8,
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) -> list[ScrapedLot]:
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"""Скрейп Циан по 1к/2к/3к/4+ × N страниц — расширяет выборку.
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4 комнаты × N страниц × ~28 = до ~330+ лотов до дедупликации.
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"""
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seen: dict[str, ScrapedLot] = {}
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for rooms in ((1,), (2,), (3,), (4,)):
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for page in range(1, pages + 1):
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try:
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lots = await self.fetch_around(lat, lon, radius_m, rooms=rooms, page=page)
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except Exception:
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logger.exception("cian multi-room fetch failed rooms=%s page=%d", rooms, page)
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continue
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if not lots:
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break # пустая страница → дальше смысла нет
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for lot in lots:
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key = lot.source_id or lot.source_url
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if key and key not in seen:
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seen[key] = lot
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logger.info(
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"cian multi-room: %d unique lots (lat=%.4f lon=%.4f radius=%dm)",
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len(seen),
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lat,
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lon,
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radius_m,
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)
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return list(seen.values())
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def _build_url(
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self,
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rooms: tuple[int, ...] | None = None,
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page: int = 1,
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) -> str:
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"""URL для Cian каталога вторички ЕКБ.
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Используем ekb.cian.ru (city-specific subdomain).
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Регион задаётся через region= param как fallback для reliability.
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"""
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params: list[tuple[str, Any]] = [
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("deal_type", "sale"),
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("engine_version", "2"),
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("offer_type", "flat"),
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("region", CIAN_EKB_REGION_ID),
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("sort", "creation_date_desc"),
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]
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if rooms:
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for r in rooms:
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params.append((f"room{r}", "1"))
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if page > 1:
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params.append(("p", page))
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return f"{self.base_url}/cat.php?{urlencode(params)}"
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def _parse_serp_html(self, html: str) -> list[ScrapedLot]:
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"""Извлечь offers из Cian Redux state.
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Использует cian_state_parser.extract_state() — общая утилита Stage 2.
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Возвращает пустой список если state не найден.
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"""
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state = extract_state(html, mfe=_MFE_SERP, key=_STATE_KEY)
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if state is None:
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logger.warning(
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"cian SERP state extraction failed (mfe=%s key=%s) — "
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"возможно Cian изменил структуру или вернул captcha",
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_MFE_SERP,
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_STATE_KEY,
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)
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return []
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offers_data: list[dict[str, Any]] = state.get("results", {}).get("offers", [])
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if not offers_data:
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logger.warning(
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"cian state found but results.offers пуст (totalOffers=%s)",
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state.get("results", {}).get("totalOffers", "?"),
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)
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return []
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logger.info(
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"cian SERP state ok: %d offers (totalOffers=%s)",
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len(offers_data),
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state.get("results", {}).get("totalOffers", "?"),
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)
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lots: list[ScrapedLot] = []
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for offer in offers_data:
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lot = self._offer_to_lot(offer)
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if lot is not None:
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lots.append(lot)
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raw_count = len(offers_data)
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saved_count = len(lots)
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# Охрана от silent-failure: если получили offers, но ни один не прошёл парсинг
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# — likely schema regression (как descriptionMinhash str→list[int] 2026-05-23).
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if raw_count > 0 and saved_count == 0:
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logger.error(
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"cian SERP: 0/%d offers прошли _offer_to_lot — возможна schema regression",
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raw_count,
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)
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try:
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if settings.glitchtip_dsn:
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sentry_sdk.capture_message(
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f"cian SERP: {raw_count}/{raw_count} offers failed _offer_to_lot"
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" — possible schema regression",
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level="error",
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)
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except Exception:
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pass # sentry_sdk not initialised in dev
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return lots
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def _offer_to_lot(self, offer: dict[str, Any]) -> ScrapedLot | None:
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"""Парсинг одного Cian offer (137 fields) → ScrapedLot.
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Маппинг полей per Schema_Cian_SERP_Inventory sec 3, sec 8, sec 11.
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Без anchor jitter: координаты из offer.geo.coordinates (точные).
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"""
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try:
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# ── Identity ─────────────────────────────────────────────────────
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offer_id = offer.get("cianId") or offer.get("id")
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if not offer_id:
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logger.debug("cian offer пропущен: нет cianId/id")
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return None
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source_id = str(offer_id)
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url = offer.get("fullUrl")
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if not url:
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url = f"{self.base_url}/sale/flat/{offer_id}/"
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# ── Цена ─────────────────────────────────────────────────────────
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bargain: dict[str, Any] = offer.get("bargainTerms") or {}
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price = bargain.get("priceRur") or bargain.get("price")
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if not price:
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logger.debug("cian offer %s пропущен: нет цены", offer_id)
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return None
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try:
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price_rub = int(price)
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except (TypeError, ValueError):
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logger.debug("cian offer %s: не удалось распарсить цену %r", offer_id, price)
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return None
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if price_rub <= 0:
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return None
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# ── Параметры квартиры ───────────────────────────────────────────
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rooms: int | None = offer.get("roomsCount")
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# Студия: flatType == 'studio' → 0 комнат
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if offer.get("flatType") == "studio" and rooms is None:
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rooms = 0
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area_raw = offer.get("totalArea")
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area_m2: float | None = None
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if area_raw is not None:
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try:
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area_m2 = float(area_raw)
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except (TypeError, ValueError):
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pass
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living_area_raw = offer.get("livingArea")
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living_area_m2: float | None = None
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if living_area_raw is not None:
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try:
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living_area_m2 = float(living_area_raw)
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except (TypeError, ValueError):
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pass
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# kitchen_area_m2 сохраняем в raw_payload (поле не в ScrapedLot Stage 2)
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kitchen_area_raw = offer.get("kitchenArea")
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floor: int | None = offer.get("floorNumber")
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# ── Здание ───────────────────────────────────────────────────────
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building: dict[str, Any] = offer.get("building") or {}
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total_floors: int | None = building.get("floorsCount")
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year_built: int | None = building.get("buildYear")
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house_type: str | None = building.get("materialType")
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# Newbuilding deadline year — если нет buildYear
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if year_built is None:
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deadline = building.get("deadline") or {}
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year_built = deadline.get("year")
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# ── Кадастр ─────────────────────────────────────────────────────
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# cadastralNumber — кадастр КВАРТИРЫ
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cadastral_number: str | None = offer.get("cadastralNumber")
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# buildingCadastralNumber — кадастр ДОМА
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building_cadastral_number: str | None = offer.get("buildingCadastralNumber")
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# ── Геолокация (точные координаты — NO jitter) ───────────────────
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geo: dict[str, Any] = offer.get("geo") or {}
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coords: dict[str, Any] = geo.get("coordinates") or {}
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lat: float | None = coords.get("lat")
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lon: float | None = coords.get("lng")
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# Если нет coords → сохраняем без lat/lon (geocode-missing обработает позже)
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if lat is None or lon is None:
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logger.debug(
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"cian offer %s: нет точных координат в state (geo=%s)",
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offer_id,
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coords,
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)
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lat = lon = None
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# ── Адрес из geo.address[] ───────────────────────────────────────
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address_parts = geo.get("address") or []
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address = _format_address(address_parts)
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# ── Metro stations ───────────────────────────────────────────────
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undergrounds: list[dict[str, Any]] = geo.get("undergrounds") or []
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metro_stations = [
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{
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"name": u.get("name"),
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"time": u.get("time"),
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"mode": u.get("transportType"),
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"line_color": u.get("lineColor"),
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"line_id": u.get("lineId"),
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"is_default": u.get("isDefault", False),
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}
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for u in undergrounds
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if u.get("name")
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]
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# ── Newbuilding link ─────────────────────────────────────────────
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newbuilding: dict[str, Any] = offer.get("newbuilding") or {}
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nb_id = newbuilding.get("id")
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# id == 0 — sentinel для вторички (per Schema sec 20.5)
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house_source: str | None = None
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house_ext_id: str | None = None
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listing_segment: str | None = None
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if nb_id and int(nb_id) > 0:
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house_source = "cian_newbuilding"
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house_ext_id = str(nb_id)
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listing_segment = "novostroyki"
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else:
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house_source = "cian"
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listing_segment = "vtorichka"
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# ── Дополнительные характеристики ────────────────────────────────
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balconies_count: int | None = offer.get("balconiesCount")
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loggias_count: int | None = offer.get("loggiasCount")
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bedrooms_count: int | None = offer.get("bedroomsCount")
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has_balcony: bool | None = None
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if balconies_count is not None:
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has_balcony = balconies_count > 0
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elif loggias_count is not None:
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has_balcony = loggias_count > 0
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# Мебель и repair_state
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has_furniture: bool | None = offer.get("hasFurniture") or offer.get("isSoldFurnished")
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# decoration — для новостроек (отделка); repair_state — для вторички
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# Cian SERP: offer.decoration содержит raw значения (without/cosmetic/euro/design/...)
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# Нормализуем до enum needs_repair/standard/good/excellent при инgesте.
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repair_state: str | None = normalize_repair_state(offer.get("decoration"))
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# ── Продавец ─────────────────────────────────────────────────────
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phones: list[dict[str, Any]] = offer.get("phones") or []
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is_homeowner: bool | None = offer.get("isByHomeowner")
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is_pro_seller: bool | None = offer.get("isPro")
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# ── Сделка ───────────────────────────────────────────────────────
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sale_type: str | None = bargain.get("saleType")
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bargain_allowed: bool | None = bargain.get("bargainAllowed")
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# ── Description + minhash ─────────────────────────────────────────
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description: str | None = offer.get("description")
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# Cian предоставляет готовый minhash для dedup и cross-source matching.
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# С ~2026-05-23 Cian изменил тип descriptionMinhash: str → list[int].
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||
# Нормализуем оба варианта; НЕ sorted() — порядок band-ов значим для LSH.
|
||
_raw_minhash = offer.get("descriptionMinhash")
|
||
if isinstance(_raw_minhash, list):
|
||
description_minhash: str | None = ",".join(str(x) for x in _raw_minhash) or None
|
||
elif isinstance(_raw_minhash, str):
|
||
description_minhash = _raw_minhash or None
|
||
else:
|
||
description_minhash = None
|
||
# Если Cian не дал minhash — вычисляем простой SHA1 из description
|
||
if not description_minhash and description:
|
||
description_minhash = hashlib.sha1(
|
||
description.lower().encode("utf-8", errors="replace")
|
||
).hexdigest()[:32]
|
||
|
||
# Fallback: repair_state из описания, если decoration отсутствует (#622)
|
||
if repair_state is None and description:
|
||
repair_state = infer_repair_state_from_text(description)
|
||
|
||
# ── Фото ─────────────────────────────────────────────────────────
|
||
photo_urls: list[str] = [
|
||
p["fullUrl"]
|
||
for p in (offer.get("photos") or [])
|
||
if isinstance(p, dict) and p.get("fullUrl")
|
||
]
|
||
|
||
# ── Дата публикации ───────────────────────────────────────────────
|
||
added_ts = offer.get("addedTimestamp")
|
||
listing_date = None
|
||
if added_ts:
|
||
try:
|
||
listing_date = datetime.fromtimestamp(int(added_ts), tz=UTC).date()
|
||
except (TypeError, ValueError, OSError):
|
||
pass
|
||
|
||
# ── Raw payload (полный offer для enrichment в будущем) ───────────
|
||
raw_payload: dict[str, Any] = {
|
||
"cian_id": offer_id,
|
||
"flat_type": offer.get("flatType"),
|
||
"is_apartments": offer.get("isApartments"),
|
||
"offer_type": offer.get("offerType"),
|
||
"category": offer.get("category"),
|
||
"has_furniture": has_furniture,
|
||
"kitchen_area_m2": kitchen_area_raw, # не в ScrapedLot — сохраняем здесь
|
||
"mortgage_allowed": bargain.get("mortgageAllowed"),
|
||
"sale_type": sale_type,
|
||
"newbuilding_name": newbuilding.get("name"),
|
||
"is_from_developer": (
|
||
offer.get("fromDeveloper") or newbuilding.get("isFromDeveloper")
|
||
),
|
||
"builders_ids": offer.get("buildersIds"),
|
||
"is_rosreestr_checked": offer.get("isRosreestrChecked"),
|
||
"is_layout_approved": offer.get("isLayoutApproved"),
|
||
"user_id": offer.get("userId"),
|
||
"published_user_id": offer.get("publishedUserId"),
|
||
"is_by_commercial_owner": offer.get("isByCommercialOwner"),
|
||
"is_cian_partner": offer.get("isCianPartner"),
|
||
"description_words_highlighted": offer.get("descriptionWordsHighlighted"),
|
||
"building_parking": building.get("parking"),
|
||
"building_total_area": building.get("totalArea"),
|
||
}
|
||
|
||
return ScrapedLot(
|
||
source="cian",
|
||
source_url=url,
|
||
source_id=source_id,
|
||
address=address,
|
||
lat=lat,
|
||
lon=lon,
|
||
rooms=rooms,
|
||
area_m2=area_m2,
|
||
floor=floor,
|
||
total_floors=total_floors,
|
||
year_built=year_built,
|
||
house_type=house_type,
|
||
repair_state=repair_state,
|
||
has_balcony=has_balcony,
|
||
kadastr_num=cadastral_number,
|
||
house_source=house_source,
|
||
house_ext_id=house_ext_id,
|
||
listing_segment=listing_segment,
|
||
price_rub=price_rub,
|
||
price_per_m2=None, # compute_price_per_m2() вычислит
|
||
listing_date=listing_date,
|
||
photo_urls=photo_urls,
|
||
raw_payload=raw_payload,
|
||
# Cian-specific (Stage 2 fields)
|
||
living_area_m2=living_area_m2,
|
||
bedrooms_count=bedrooms_count,
|
||
balconies_count=balconies_count,
|
||
loggias_count=loggias_count,
|
||
description_minhash=description_minhash,
|
||
cadastral_number=cadastral_number,
|
||
building_cadastral_number=building_cadastral_number,
|
||
phones=phones,
|
||
is_homeowner=is_homeowner,
|
||
is_pro_seller=is_pro_seller,
|
||
bargain_allowed=bargain_allowed,
|
||
sale_type=sale_type,
|
||
metro_stations=metro_stations,
|
||
)
|
||
|
||
except Exception:
|
||
_oid = offer.get("cianId") or offer.get("id")
|
||
logger.exception("cian _offer_to_lot failed for offer_id=%s", _oid)
|
||
return None
|
||
|
||
|
||
# ── Address formatter ────────────────────────────────────────────────────────
|
||
|
||
|
||
def _format_address(address_parts: list[dict[str, Any]]) -> str:
|
||
"""Сформировать читаемый адрес из geo.address[] Cian.
|
||
|
||
Пропускаем location (страна/регион) и metro — берём раион/улицу/дом.
|
||
Пример: [location=Москва, raion=Пресненский, street=..., house=1С7, metro=Москва-Сити]
|
||
→ 'Пресненский, улица ..., 1С7'
|
||
"""
|
||
if not address_parts:
|
||
return "Екатеринбург (Cian)"
|
||
|
||
skip_types = {"location", "metro"}
|
||
parts: list[str] = []
|
||
for part in address_parts:
|
||
if not isinstance(part, dict):
|
||
continue
|
||
ptype = part.get("type", "")
|
||
if ptype in skip_types:
|
||
continue
|
||
name = (part.get("fullName") or part.get("name") or "").strip()
|
||
if name:
|
||
parts.append(name)
|
||
|
||
return ", ".join(parts) if parts else "Екатеринбург (Cian)"
|