🚀 MVP: FastAPI + React форма с SMS верификацией

✅ Инфраструктура: PostgreSQL, Redis, RabbitMQ, S3
✅ Backend: SMS сервис + API endpoints
✅ Frontend: React форма (3 шага) + SMS верификация

backend/app/services/database.py

@@ -0,0 +1,76 @@
+"""
+PostgreSQL Database Service
+"""
+import asyncpg
+from typing import Optional, Dict, Any, List
+from ..config import settings
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class DatabaseService:
+    """Сервис для работы с PostgreSQL"""
+    
+    def __init__(self):
+        self.pool: Optional[asyncpg.Pool] = None
+    
+    async def connect(self):
+        """Создает пул подключений к PostgreSQL"""
+        try:
+            self.pool = await asyncpg.create_pool(
+                host=settings.postgres_host,
+                port=settings.postgres_port,
+                database=settings.postgres_db,
+                user=settings.postgres_user,
+                password=settings.postgres_password,
+                min_size=5,
+                max_size=20,
+                command_timeout=60
+            )
+            logger.info(f"✅ PostgreSQL connected: {settings.postgres_host}:{settings.postgres_port}/{settings.postgres_db}")
+        except Exception as e:
+            logger.error(f"❌ PostgreSQL connection error: {e}")
+            raise
+    
+    async def disconnect(self):
+        """Закрывает пул подключений"""
+        if self.pool:
+            await self.pool.close()
+            logger.info("PostgreSQL pool closed")
+    
+    async def execute(self, query: str, *args) -> str:
+        """Выполняет SQL запрос без возврата данных"""
+        async with self.pool.acquire() as conn:
+            return await conn.execute(query, *args)
+    
+    async def fetch_one(self, query: str, *args) -> Optional[Dict[str, Any]]:
+        """Возвращает одну запись"""
+        async with self.pool.acquire() as conn:
+            row = await conn.fetchrow(query, *args)
+            return dict(row) if row else None
+    
+    async def fetch_all(self, query: str, *args) -> List[Dict[str, Any]]:
+        """Возвращает все записи"""
+        async with self.pool.acquire() as conn:
+            rows = await conn.fetch(query, *args)
+            return [dict(row) for row in rows]
+    
+    async def fetch_val(self, query: str, *args):
+        """Возвращает одно значение"""
+        async with self.pool.acquire() as conn:
+            return await conn.fetchval(query, *args)
+    
+    async def health_check(self) -> bool:
+        """Проверка здоровья БД"""
+        try:
+            result = await self.fetch_val("SELECT 1")
+            return result == 1
+        except Exception as e:
+            logger.error(f"Database health check failed: {e}")
+            return False
+
+
+# Глобальный экземпляр
+db = DatabaseService()
+