Add sync engine and wire it into the web app

- Add sync_engine.py: background asyncio loop syncing Evotor products to VK market
- Wire sync_loop into lifespan alongside health_check_loop
- Add SYNC_INTERVAL_SECONDS and VK_DEFAULT_PHOTO_PATH settings to config
- Mount default product image in docker-compose
- Add synced_at column to CachedProduct model + migration
- Show synced_at status in catalog products template
- Fix VK groups API response parsing (handle list vs dict)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -1,3 +1,160 @@
-# evo-sync
+# ЭВОСИНК (EvoSync)
 
-evo-sync is a command-line synchronization tool that fetches product, group, and store data from the Evo platform and syncs it with VK (VKontakte).
+Сервис автоматической синхронизации товарного каталога из [Эвотор](https://evotor.ru) в [ВКонтакте](https://vk.com).
+
+## Возможности
+
+- Подключение аккаунта Эвотор через OAuth
+- Подключение сообщества ВКонтакте через токен
+- Фильтрация по магазинам, группам и товарам (включить/исключить)
+- Автоматическая фоновая синхронизация по расписанию
+- Создание, обновление и удаление товаров в ВК-магазине
+- Личный кабинет с веб-интерфейсом
+- Просмотр закешированного каталога товаров
+
+## Стек технологий
+
+- **Backend**: FastAPI, SQLAlchemy ORM, Alembic
+- **База данных**: MariaDB (драйвер pymysql)
+- **Шаблоны**: Jinja2 (интерфейс на русском языке)
+- **Аутентификация**: Cookie-сессии, bcrypt
+- **Деплой**: Docker Compose
+
+## Быстрый старт
+
+### Требования
+
+- Docker и Docker Compose
+- MariaDB/MySQL (можно использовать хост-машину или отдельный контейнер)
+
+### Настройка
+
+1. Скопируйте файл переменных окружения:
+
+```bash
+cp .env.example .env
+```
+
+2. Отредактируйте `.env`:
+
+```env
+# База данных
+DATABASE_URL=mysql+pymysql://evosync:evosync@db:3306/evosync
+
+# Безопасность (обязательно измените в production)
+SECRET_KEY=your-random-secret-key-here
+
+# URL приложения (используется в OAuth-редиректах)
+BASE_URL=https://your-domain.ru
+
+# Эвотор
+EVOTOR_APP_ID=your-evotor-app-id
+EVOTOR_WEBHOOK_SECRET=your-webhook-secret
+
+# Для отдельного MySQL-контейнера (опционально)
+DB_ROOT_PASSWORD=rootpass
+DB_NAME=evosync
+DB_USER=evosync
+DB_PASSWORD=evosync
+```
+
+3. Запустите сервис:
+
+```bash
+docker compose up -d
+```
+
+Приложение будет доступно по адресу `http://localhost:8080`.
+
+При старте контейнер автоматически применяет миграции базы данных (`alembic upgrade head`).
+
+## Переменные окружения
+
+| Переменная | Обязательно | По умолчанию | Описание |
+|---|---|---|---|
+| `DATABASE_URL` | Да | — | MySQL connection string (pymysql) |
+| `SECRET_KEY` | Да | `change-me-in-production` | Ключ для подписи сессий |
+| `BASE_URL` | Да | `http://localhost:8080` | Публичный URL (для OAuth-callback) |
+| `EVOTOR_APP_ID` | Да | — | ID приложения Эвотор |
+| `EVOTOR_WEBHOOK_SECRET` | Да | — | Секрет для верификации вебхуков Эвотор |
+| `VK_API_VERSION` | Нет | `5.131` | Версия VK API |
+| `VK_DEFAULT_PHOTO_PATH` | Нет | `/app/default_product.png` | Путь к изображению товара по умолчанию |
+| `JIVOSITE_WIDGET_ID` | Нет | — | ID виджета Jivosite (онлайн-чат) |
+| `SYNC_INTERVAL_SECONDS` | Нет | `3600` | Интервал синхронизации (сек) |
+| `CATALOG_REFRESH_INTERVAL_SECONDS` | Нет | `3600` | Интервал обновления каталога (сек) |
+| `HEALTH_CHECK_INTERVAL_SECONDS` | Нет | `600` | Интервал проверки соединений (сек) |
+
+## Структура проекта
+
+```
+evo-sync/
+├── web/
+│   ├── main.py              # FastAPI-приложение, регистрация роутеров, фоновые задачи
+│   ├── config.py            # Настройки из переменных окружения (pydantic-settings)
+│   ├── models.py            # SQLAlchemy-модели (User, EvotorConnection, VkConnection, ...)
+│   ├── database.py          # Движок и сессия SQLAlchemy
+│   ├── auth.py              # Хеширование паролей, работа с сессиями
+│   ├── schemas.py           # Pydantic-схемы для форм
+│   ├── sync_engine.py       # Фоновый движок синхронизации (Эвотор → ВК)
+│   ├── routes/
+│   │   ├── auth.py          # Регистрация, вход, выход, подтверждение email
+│   │   ├── profile.py       # Профиль пользователя
+│   │   ├── reset.py         # Сброс пароля
+│   │   ├── evotor.py        # OAuth-подключение Эвотор
+│   │   ├── vk.py            # Подключение ВКонтакте (ввод токена)
+│   │   ├── connections.py   # Обзор всех подключений
+│   │   ├── sync.py          # Настройка и управление синхронизацией
+│   │   └── catalog.py       # Просмотр закешированного каталога
+│   ├── templates/           # Jinja2-шаблоны (русский интерфейс)
+│   └── migrations/          # Alembic-миграции
+├── Dockerfile.web           # Docker-образ веб-приложения (Python 3.12-slim)
+├── docker-compose.yml       # Оркестрация сервисов
+├── docker-entrypoint.sh     # Скрипт запуска контейнера
+├── alembic.ini              # Конфигурация миграций
+├── requirements.txt         # Python-зависимости
+└── .env.example             # Шаблон переменных окружения
+```
+
+## Модели базы данных
+
+| Модель | Таблица | Назначение |
+|---|---|---|
+| `User` | `users` | Аккаунт пользователя |
+| `EvotorConnection` | `evotor_connections` | OAuth-токен Эвотор |
+| `VkConnection` | `vk_connections` | Токен сообщества ВКонтакте |
+| `SyncConfig` | `sync_configs` | Настройки синхронизации пользователя |
+| `SyncFilter` | `sync_filters` | Фильтры по магазинам/группам/товарам |
+| `CachedStore` | `cached_stores` | Кеш магазинов Эвотор |
+| `CachedGroup` | `cached_groups` | Кеш групп товаров Эвотор |
+| `CachedProduct` | `cached_products` | Кеш товаров Эвотор + статус синхронизации |
+
+## Как работает синхронизация
+
+1. По расписанию (каждые `SYNC_INTERVAL_SECONDS` секунд) запускается `sync_engine.run_sync()`
+2. Для каждого пользователя с активным `SyncConfig` и подключёнными Эвотор и ВК:
+   - Загружаются товары и группы из Эвотор API
+   - Применяются фильтры (включить/исключить магазины, группы, товары)
+   - Загружаются текущие товары и альбомы из ВК
+   - Создаются/обновляются/удаляются альбомы и товары в ВК-магазине
+   - В БД обновляется поле `synced_at` у синхронизированных товаров
+
+**Особенности:**
+- Товары на развес (единицы измерения в граммах) получают скорректированную цену (×10)
+- Совпадение товаров ВК и Эвотор происходит по нормализованному названию
+- Товары с `allow_to_sell=false` не синхронизируются в ВК
+
+## Разработка
+
+Для локальной разработки с горячей перезагрузкой кода папка `./web` монтируется в контейнер как volume. После изменения Python-файлов uvicorn перезапустится автоматически.
+
+Создание новой миграции:
+
+```bash
+docker compose exec web alembic revision --autogenerate -m "описание изменений"
+```
+
+Применение миграций вручную:
+
+```bash
+docker compose exec web alembic upgrade head
+```

docker-compose.yml

@@ -19,6 +19,7 @@ services:
       - ./web:/app/web
       - ./alembic.ini:/app/alembic.ini
       - ./docker-entrypoint.sh:/app/docker-entrypoint.sh
+      - ./5393364294319597854.png:/app/default_product.png:ro
     restart: unless-stopped
     extra_hosts:
       - "host.docker.internal:host-gateway"

web/config.py

@@ -14,6 +14,9 @@ class Settings(BaseSettings):
 
     HEALTH_CHECK_INTERVAL_SECONDS: int = 600
     CATALOG_REFRESH_INTERVAL_SECONDS: int = 3600
+    SYNC_INTERVAL_SECONDS: int = 3600
+
+    VK_DEFAULT_PHOTO_PATH: str = "/app/default_product.png"
 
     VK_API_VERSION: str = "5.131"
 

web/main.py

@@ -9,6 +9,7 @@ from starlette.middleware.sessions import SessionMiddleware
 from web.auth import get_current_user
 from web.config import settings
 from web.health_checker import health_check_loop
+from web.sync_engine import sync_loop
 from web.models import User
 from web.routes import auth, profile, reset, evotor, vk, sync, catalog
 from web.routes import connections
@@ -16,13 +17,18 @@ from web.routes import connections
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    task = asyncio.create_task(health_check_loop(settings.HEALTH_CHECK_INTERVAL_SECONDS))
+    tasks = [
+        asyncio.create_task(health_check_loop(settings.HEALTH_CHECK_INTERVAL_SECONDS)),
+        asyncio.create_task(sync_loop(settings.SYNC_INTERVAL_SECONDS)),
+    ]
     yield
-    task.cancel()
-    try:
-        await task
-    except asyncio.CancelledError:
-        pass
+    for t in tasks:
+        t.cancel()
+    for t in tasks:
+        try:
+            await t
+        except asyncio.CancelledError:
+            pass
 
 
 app = FastAPI(title="ЭВОСИНК — Личный кабинет", lifespan=lifespan)

web/migrations/versions/a7b8c9d0e1f2_add_synced_at_to_cached_products.py

@@ -0,0 +1,26 @@
+"""add synced_at to cached_products
+
+Revision ID: a7b8c9d0e1f2
+Revises: f6a7b8c9d0e1
+Branch Labels: None
+Depends On: None
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "a7b8c9d0e1f2"
+down_revision = "f6a7b8c9d0e1"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column(
+        "cached_products",
+        sa.Column("synced_at", sa.DateTime(), nullable=True),
+    )
+
+
+def downgrade():
+    op.drop_column("cached_products", "synced_at")

web/models.py

@@ -149,6 +149,7 @@ class CachedProduct(Base):
     article_number = Column(String(100), nullable=True)
     allow_to_sell = Column(Boolean, nullable=True)
     fetched_at = Column(DateTime, nullable=False)
+    synced_at = Column(DateTime, nullable=True)
 
     __table_args__ = (
         UniqueConstraint("user_id", "evotor_id"),

web/routes/vk.py

@@ -65,7 +65,8 @@ async def vk_token(
                 data = resp.json()
                 if "error" in data:
                     return RedirectResponse("/vk?error=invalid_token", 303)
-                groups = data.get("response", {}).get("groups", [])
+                response = data.get("response", [])
+                groups = response if isinstance(response, list) else response.get("groups", [])
                 if groups:
                     group_id = str(groups[0].get("id", ""))
                     group_name = groups[0].get("name")

web/sync_engine.py

@@ -0,0 +1,485 @@
+"""
+Sync engine: syncs Evotor products to VK market for all enabled users.
+Runs as a background asyncio loop inside the web app.
+"""
+
+import asyncio
+import logging
+from datetime import datetime
+
+import httpx
+from sqlalchemy.orm import Session
+
+from web.database import SessionLocal
+from web.models import CachedProduct, EvotorConnection, VkConnection, SyncConfig, SyncFilter
+
+logger = logging.getLogger("uvicorn.error")
+
+VK_API_HOST = "https://api.vk.ru/method"
+VK_API_VERSION = "5.199"
+EVOTOR_API_BASE = "https://api.evotor.ru"
+VK_CATEGORY_ID = 40932
+VK_STOCK_AMOUNT = 1000
+WEIGHT_PRICE_MULTIPLIER = 10
+WEIGHT_MEASURES = {"г", "г.", "грамм", "граммов", "гр", "гр."}
+
+
+def _is_weight_measure(measure: str | None) -> bool:
+    if not measure:
+        return False
+    return measure.strip().lower() in WEIGHT_MEASURES
+
+
+def _normalize_name(name: str) -> str:
+    return name.strip().replace(";", ",")
+
+
+def _calc_price(price_kopecks, measure: str | None) -> tuple[int, str]:
+    """Returns (price_in_kopecks_for_vk, price_info_label)."""
+    base = int(price_kopecks or 0)
+    if _is_weight_measure(measure):
+        return base * WEIGHT_PRICE_MULTIPLIER, f"{WEIGHT_PRICE_MULTIPLIER}{measure}"
+    return base, measure or ""
+
+
+def _build_description(name: str, price_info: str, extra_desc: str | None) -> str:
+    desc = f"{name} (цена за {price_info}.)\n\n"
+    if extra_desc:
+        desc += extra_desc
+    return desc
+
+
+def _get_included_store_ids(filters: list) -> list[str]:
+    return [f.entity_id for f in filters if f.entity_type == "store" and f.filter_mode == "include"]
+
+
+def _is_group_included(group_id: str | None, filters: list) -> bool:
+    """Returns True if the group should be synced based on filters."""
+    group_filters = {f.entity_id: f.filter_mode for f in filters if f.entity_type == "group"}
+    if not group_filters:
+        return True  # no group filters → include all
+    mode = group_filters.get(group_id)
+    if mode == "exclude":
+        return False
+    if mode == "include":
+        return True
+    # Not mentioned — include if there are only excludes, exclude if there are only includes
+    has_includes = any(v == "include" for v in group_filters.values())
+    return not has_includes
+
+
+def _is_product_included(product_id: str, filters: list) -> bool:
+    product_filters = {f.entity_id: f.filter_mode for f in filters if f.entity_type == "product"}
+    if not product_filters:
+        return True
+    mode = product_filters.get(product_id)
+    if mode == "exclude":
+        return False
+    if mode == "include":
+        return True
+    has_includes = any(v == "include" for v in product_filters.values())
+    return not has_includes
+
+
+# ---------------------------------------------------------------------------
+# Evotor API helpers
+# ---------------------------------------------------------------------------
+
+async def _evo_fetch_products(token: str, store_id: str) -> list[dict]:
+    async with httpx.AsyncClient() as client:
+        resp = await client.get(
+            f"{EVOTOR_API_BASE}/stores/{store_id}/products",
+            headers={"Authorization": f"Bearer {token}"},
+            timeout=30,
+        )
+        if resp.status_code in (402, 404):
+            return []
+        resp.raise_for_status()
+        data = resp.json()
+        return data.get("items", data) if isinstance(data, dict) else data
+
+
+async def _evo_fetch_groups(token: str, store_id: str) -> list[dict]:
+    async with httpx.AsyncClient() as client:
+        resp = await client.get(
+            f"{EVOTOR_API_BASE}/stores/{store_id}/product-groups",
+            headers={"Authorization": f"Bearer {token}"},
+            timeout=30,
+        )
+        if resp.status_code in (402, 404):
+            return []
+        resp.raise_for_status()
+        data = resp.json()
+        return data.get("items", data) if isinstance(data, dict) else data
+
+
+# ---------------------------------------------------------------------------
+# VK API helpers
+# ---------------------------------------------------------------------------
+
+def _vk_params(token: str, **extra) -> dict:
+    return {"access_token": token, "v": VK_API_VERSION, **extra}
+
+
+async def _vk_get_albums(token: str, owner_id: str) -> list[dict]:
+    async with httpx.AsyncClient() as client:
+        resp = await client.get(
+            f"{VK_API_HOST}/market.getAlbums",
+            params=_vk_params(token, owner_id=owner_id, count=200),
+            timeout=30,
+        )
+        resp.raise_for_status()
+        data = resp.json()
+        return data.get("response", {}).get("items", [])
+
+
+async def _vk_create_album(token: str, owner_id: str, title: str) -> int | None:
+    async with httpx.AsyncClient() as client:
+        resp = await client.post(
+            f"{VK_API_HOST}/market.addAlbum",
+            data=_vk_params(token, owner_id=owner_id, title=title),
+            timeout=30,
+        )
+        resp.raise_for_status()
+        data = resp.json()
+        if "error" in data:
+            logger.error("VK create album error: %s", data["error"])
+            return None
+        return data.get("response", {}).get("market_album_id")
+
+
+async def _vk_get_products(token: str, owner_id: str) -> list[dict]:
+    """Fetch all VK market items (handles pagination)."""
+    items = []
+    offset = 0
+    count = 200
+    async with httpx.AsyncClient() as client:
+        while True:
+            resp = await client.get(
+                f"{VK_API_HOST}/market.get",
+                params=_vk_params(token, owner_id=owner_id, extended=1,
+                                  with_disabled=1, count=count, offset=offset),
+                timeout=30,
+            )
+            resp.raise_for_status()
+            data = resp.json()
+            batch = data.get("response", {}).get("items", [])
+            items.extend(batch)
+            if len(batch) < count:
+                break
+            offset += count
+    return items
+
+
+async def _vk_upload_photo(token: str, group_id: str, photo_path: str) -> str | None:
+    """Upload a photo and return photo_id."""
+    async with httpx.AsyncClient() as client:
+        # Get upload URL
+        resp = await client.get(
+            f"{VK_API_HOST}/market.getProductPhotoUploadServer",
+            params=_vk_params(token, group_id=group_id),
+            timeout=30,
+        )
+        resp.raise_for_status()
+        data = resp.json()
+        if "error" in data:
+            logger.error("VK get upload URL error: %s", data["error"])
+            return None
+        upload_url = data.get("response", {}).get("upload_url")
+        if not upload_url:
+            return None
+
+        # Upload photo
+        with open(photo_path, "rb") as f:
+            upload_resp = await client.post(upload_url, files={"file": f}, timeout=60)
+        upload_resp.raise_for_status()
+        upload_obj = upload_resp.json()
+
+        # Save photo
+        save_resp = await client.post(
+            f"{VK_API_HOST}/market.saveProductPhoto",
+            data=_vk_params(token, upload_response=upload_resp.text),
+            timeout=30,
+        )
+        save_resp.raise_for_status()
+        save_data = save_resp.json()
+        if "error" in save_data:
+            logger.error("VK save photo error: %s", save_data["error"])
+            return None
+        return save_data.get("response", {}).get("photo_id")
+
+
+async def _vk_create_product(
+    token: str, owner_id: str, name: str, description: str,
+    price: int, stock_amount: int, photo_id: str, album_id: int | None,
+) -> int | None:
+    params = _vk_params(
+        token,
+        owner_id=owner_id,
+        name=name,
+        description=description,
+        category_id=VK_CATEGORY_ID,
+        price=price,
+        main_photo_id=photo_id,
+        stock_amount=stock_amount,
+    )
+    async with httpx.AsyncClient() as client:
+        resp = await client.post(f"{VK_API_HOST}/market.add", data=params, timeout=30)
+        resp.raise_for_status()
+        data = resp.json()
+        if "error" in data:
+            logger.error("VK create product error: %s", data["error"])
+            return None
+        product_id = data.get("response", {}).get("market_item_id")
+        if product_id and album_id:
+            await client.get(
+                f"{VK_API_HOST}/market.addToAlbum",
+                params=_vk_params(token, owner_id=owner_id,
+                                  item_ids=product_id, album_ids=album_id),
+                timeout=30,
+            )
+        return product_id
+
+
+async def _vk_edit_product(
+    token: str, owner_id: str, item_id: int, name: str,
+    description: str, price: int, stock_amount: int,
+) -> None:
+    params = _vk_params(
+        token,
+        owner_id=owner_id,
+        item_id=item_id,
+        name=name,
+        description=description,
+        category_id=VK_CATEGORY_ID,
+        price=price,
+        stock_amount=stock_amount,
+    )
+    async with httpx.AsyncClient() as client:
+        resp = await client.post(f"{VK_API_HOST}/market.edit", data=params, timeout=30)
+        resp.raise_for_status()
+        data = resp.json()
+        if "error" in data:
+            logger.error("VK edit product error: %s", data["error"])
+
+
+async def _vk_delete_product(token: str, owner_id: str, item_id: int) -> None:
+    async with httpx.AsyncClient() as client:
+        resp = await client.post(
+            f"{VK_API_HOST}/market.delete",
+            data=_vk_params(token, owner_id=owner_id, item_id=item_id),
+            timeout=30,
+        )
+        resp.raise_for_status()
+
+
+# ---------------------------------------------------------------------------
+# Main sync logic per user
+# ---------------------------------------------------------------------------
+
+def _stamp_synced(db: Session, user_id: int, evo_id: str, now: datetime) -> None:
+    db.query(CachedProduct).filter(
+        CachedProduct.user_id == user_id,
+        CachedProduct.evotor_id == evo_id,
+    ).update({"synced_at": now})
+    db.commit()
+
+
+async def sync_user(
+    user_id: int,
+    evo_token: str,
+    vk_token: str,
+    vk_group_id: str,
+    filters: list,
+    photo_path: str,
+    db: Session,
+) -> None:
+    owner_id = f"-{vk_group_id}"
+    now = datetime.utcnow()
+    logger.info("Sync start: user_id=%d vk_group=%s", user_id, vk_group_id)
+
+    store_ids = _get_included_store_ids(filters)
+    if not store_ids:
+        logger.info("Sync skip: user_id=%d — no stores included in filters", user_id)
+        return
+
+    # Collect all Evotor products and groups across included stores
+    evo_products: list[dict] = []
+    groups_by_id: dict[str, dict] = {}
+
+    for store_id in store_ids:
+        raw_groups = await _evo_fetch_groups(evo_token, store_id)
+        for g in raw_groups:
+            gid = g.get("uuid") or g.get("id")
+            if gid:
+                groups_by_id[gid] = g
+
+        raw_products = await _evo_fetch_products(evo_token, store_id)
+        for p in raw_products:
+            pid = p.get("uuid") or p.get("id")
+            gid = p.get("parentUuid") or p.get("parent_id")
+            if not _is_group_included(gid, filters):
+                continue
+            if not _is_product_included(pid, filters):
+                continue
+            evo_products.append(p)
+
+    # Build evo product lookup by normalized name
+    # {normalized_name: product_dict}
+    evo_by_name: dict[str, dict] = {}
+    for p in evo_products:
+        raw_name = (p.get("name") or "").strip()
+        norm = _normalize_name(raw_name)
+        evo_by_name[norm] = p
+
+    # Fetch VK state
+    vk_products = await _vk_get_products(vk_token, owner_id)
+    vk_albums = await _vk_get_albums(vk_token, owner_id)
+    vk_album_by_title: dict[str, dict] = {a["title"]: a for a in vk_albums}
+
+    # Ensure albums exist for all included groups
+    for gid, group in groups_by_id.items():
+        if not _is_group_included(gid, filters):
+            continue
+        title = group.get("name", "")
+        if title and title not in vk_album_by_title:
+            new_album_id = await _vk_create_album(vk_token, owner_id, title)
+            if new_album_id:
+                vk_album_by_title[title] = {"id": new_album_id, "title": title}
+                logger.info("Created VK album '%s' for user_id=%d", title, user_id)
+
+    # Build VK product lookup by normalized name
+    # {normalized_name: [vk_item, ...]}
+    vk_by_name: dict[str, list[dict]] = {}
+    for item in vk_products:
+        norm = _normalize_name(item.get("title", ""))
+        vk_by_name.setdefault(norm, []).append(item)
+
+    # --- UPDATE / CREATE ---
+    for norm_name, evo_p in evo_by_name.items():
+        evo_id = evo_p.get("uuid") or evo_p.get("id")
+        raw_name = (evo_p.get("name") or "").strip()
+        name_for_vk = _normalize_name(raw_name)
+        measure = evo_p.get("measureName") or evo_p.get("measure_name")
+        raw_price = evo_p.get("price") or 0
+        price, price_info = _calc_price(raw_price, measure)
+        allow_to_sell = evo_p.get("allowToSell") if evo_p.get("allowToSell") is not None else evo_p.get("allow_to_sell")
+        stock_amount = VK_STOCK_AMOUNT if allow_to_sell else 0
+        extra_desc = evo_p.get("description") or ""
+        description = _build_description(raw_name, price_info, extra_desc).strip()
+
+        gid = evo_p.get("parentUuid") or evo_p.get("parent_id")
+        group_name = groups_by_id.get(gid, {}).get("name") if gid else None
+        album = vk_album_by_title.get(group_name) if group_name else None
+        album_id = album["id"] if album else None
+
+        if norm_name in vk_by_name:
+            # Update existing (use first match)
+            vk_item = vk_by_name[norm_name][0]
+            vk_id = vk_item["id"]
+            orig_price = vk_item.get("price", {}).get("amount", 0)
+            orig_price_int = int(orig_price) if orig_price else 0
+            orig_desc = (vk_item.get("description") or "").strip()
+            orig_stock = vk_item.get("stock_amount", 0)
+
+            price_changed = price != orig_price_int
+            desc_changed = description != orig_desc
+            stock_changed = stock_amount != orig_stock
+
+            if price_changed or desc_changed or stock_changed:
+                logger.info(
+                    "Updating VK product '%s' user_id=%d (price=%s desc=%s stock=%s)",
+                    name_for_vk, user_id, price_changed, desc_changed, stock_changed,
+                )
+                await _vk_edit_product(
+                    vk_token, owner_id, vk_id, name_for_vk, description, price, stock_amount,
+                )
+            _stamp_synced(db, user_id, evo_id, now)
+        else:
+            # Create new (only if allow_to_sell)
+            if not allow_to_sell:
+                continue
+            photo_id = await _vk_upload_photo(vk_token, vk_group_id, photo_path)
+            if not photo_id:
+                logger.error("Skipping product '%s' — photo upload failed", name_for_vk)
+                continue
+            logger.info("Creating VK product '%s' user_id=%d", name_for_vk, user_id)
+            created = await _vk_create_product(
+                vk_token, owner_id, name_for_vk, description,
+                price, stock_amount, photo_id, album_id,
+            )
+            if created:
+                _stamp_synced(db, user_id, evo_id, now)
+
+    # --- DELETE products in VK that are no longer in Evo ---
+    for norm_name, vk_items in vk_by_name.items():
+        if norm_name in evo_by_name:
+            # Delete duplicates (keep first)
+            for dup in vk_items[1:]:
+                logger.info("Deleting duplicate VK product '%s' id=%d user_id=%d",
+                            norm_name, dup["id"], user_id)
+                await _vk_delete_product(vk_token, owner_id, dup["id"])
+        else:
+            # Delete all — product removed from Evo
+            for item in vk_items:
+                logger.info("Deleting removed product '%s' id=%d user_id=%d",
+                            norm_name, item["id"], user_id)
+                await _vk_delete_product(vk_token, owner_id, item["id"])
+
+    logger.info("Sync complete: user_id=%d", user_id)
+
+
+# ---------------------------------------------------------------------------
+# Background loop
+# ---------------------------------------------------------------------------
+
+async def run_sync() -> None:
+    from web.config import settings
+
+    db = SessionLocal()
+    try:
+        configs = db.query(SyncConfig).filter(
+            SyncConfig.is_enabled == True,
+            SyncConfig.confirmed_at != None,
+        ).all()
+
+        for config in configs:
+            user_id = config.user_id
+            evo = db.query(EvotorConnection).filter(
+                EvotorConnection.user_id == user_id
+            ).first()
+            vk = db.query(VkConnection).filter(
+                VkConnection.user_id == user_id
+            ).first()
+
+            if not evo or not vk:
+                continue
+            if not evo.access_token or not vk.access_token:
+                continue
+            if not vk.vk_user_id:
+                continue
+
+            try:
+                await sync_user(
+                    user_id=user_id,
+                    evo_token=evo.access_token,
+                    vk_token=vk.access_token,
+                    vk_group_id=vk.vk_user_id,
+                    filters=config.filters,
+                    photo_path=settings.VK_DEFAULT_PHOTO_PATH,
+                    db=db,
+                )
+            except Exception:
+                logger.exception("Sync failed for user_id=%d", user_id)
+
+    except Exception:
+        logger.exception("Error in sync runner")
+        db.rollback()
+    finally:
+        db.close()
+
+
+async def sync_loop(interval: int) -> None:
+    while True:
+        await run_sync()
+        await asyncio.sleep(interval)

web/templates/catalog_products.html

@@ -40,6 +40,7 @@
                 <th>Кол-во</th>
                 <th>Ед. изм.</th>
                 <th>В продаже</th>
+                <th>Синхронизирован</th>
                 <th>Фильтр</th>
                 <th></th>
             </tr>
@@ -62,6 +63,15 @@
                         <i class="bi bi-x-circle-fill text-danger"></i>
                     {% endif %}
                 </td>
+                <td>
+                    {% if product.synced_at %}
+                        <span title="{{ product.synced_at.strftime('%d.%m.%Y %H:%M') }}">
+                            <i class="bi bi-check-circle-fill text-success"></i>
+                        </span>
+                    {% else %}
+                        <span class="text-muted">—</span>
+                    {% endif %}
+                </td>
                 <td>
                     {% if mode == "include" %}
                         <span class="badge bg-success">✓ Включено</span>