Merge branch 'refactor/backend-architecture' into development

api/database/__init__.py

@@ -1,19 +0,0 @@
-"""
-数据库模块
-"""
-from .database import get_db, get_async_db, init_db
-from .models import User, Conversation, Segment, Chapter, Book, RefreshToken, MemoirState
-
-__all__ = [
-    "get_db",
-    "get_async_db",
-    "init_db",
-    "User",
-    "RefreshToken",
-    "Conversation",
-    "Segment",
-    "Chapter",
-    "Book",
-    "MemoirState",
-]
-

api/database/database.py

@@ -1,81 +0,0 @@
-"""
-数据库连接和初始化
-仅支持 PostgreSQL
-"""
-import os
-from sqlalchemy import create_engine
-from sqlalchemy.orm import sessionmaker, Session
-from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
-
-from .models import Base
-
-# 从环境变量获取数据库 URL
-raw_database_url = os.getenv("DATABASE_URL", "postgresql://postgres:postgres@localhost:5432/life_echo")
-
-
-def parse_database_url(url: str) -> tuple[str, str]:
-    """
-    解析数据库 URL，返回同步和异步版本
-
-    支持格式：
-    - PostgreSQL: postgresql://user:pass@host:port/db
-    - PostgreSQL async: postgresql+asyncpg://user:pass@host:port/db
-    """
-    if url.startswith("postgresql+asyncpg://"):
-        async_url = url
-        sync_url = url.replace("postgresql+asyncpg://", "postgresql://")
-    elif url.startswith("postgresql://"):
-        sync_url = url
-        async_url = url.replace("postgresql://", "postgresql+asyncpg://")
-    else:
-        print(f"警告: DATABASE_URL 格式不正确 ({url})，使用默认 PostgreSQL")
-        sync_url = "postgresql://postgres:postgres@localhost:5432/life_echo"
-        async_url = "postgresql+asyncpg://postgres:postgres@localhost:5432/life_echo"
-
-    return sync_url, async_url
-
-
-DATABASE_URL, ASYNC_DATABASE_URL = parse_database_url(raw_database_url)
-
-# 同步引擎（用于迁移、Celery 任务等），使用 psycopg
-sync_url = DATABASE_URL.replace("postgresql://", "postgresql+psycopg://")
-engine = create_engine(sync_url, pool_size=5, max_overflow=10)
-
-# 异步引擎（用于 FastAPI）
-async_engine = create_async_engine(
-    ASYNC_DATABASE_URL,
-    echo=False,
-    pool_size=5,
-    max_overflow=10,
-)
-
-# 会话工厂
-SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
-AsyncSessionLocal = async_sessionmaker(async_engine, class_=AsyncSession, expire_on_commit=False)
-
-
-def init_db():
-    """初始化数据库，创建所有表"""
-    Base.metadata.create_all(bind=engine)
-
-
-def get_db():
-    """获取同步数据库会话（用于迁移等）"""
-    db = SessionLocal()
-    try:
-        yield db
-    finally:
-        db.close()
-
-
-async def get_async_db():
-    """获取异步数据库会话（用于实际应用）"""
-    async with AsyncSessionLocal() as session:
-        try:
-            yield session
-            await session.commit()
-        except Exception:
-            await session.rollback()
-            raise
-        finally:
-            await session.close()