fix bugs for launch: postgresql url for sqlalchemy; auto loading env

app/auth/__init__.py

@@ -0,0 +1,15 @@
+from fastapi import APIRouter
+from .deps import get_current_user
+from .jwt import create_jwt_token, create_refresh_token, verify_access_token
+
+# 统一创建并导出路由器，满足 main.py 的 include_router 需求
+router = APIRouter(tags=["Authentication"])
+
+# 显式声明这个包对外暴露的接口
+__all__ = [
+    "router",
+    "get_current_user",
+    "create_jwt_token",
+    "create_refresh_token",
+    "verify_access_token",
+]

app/auth/deps.py

@@ -1,6 +1,6 @@
 from fastapi import Request, HTTPException
-import app.auth.jwt as jwt
 import os
+from . import jwt
 
 JWT_SECRET = os.getenv("JWT_SECRET")
 JWT_ALGORITHM = os.getenv("JWT_ALGORITHM", "HS256")

app/auth/jwt.py

@@ -1,6 +1,6 @@
-import app.auth.jwt as jwt
 from datetime import datetime, timedelta, timezone
 import os
+import jwt
 from fastapi import HTTPException, status
 
 JWT_SECRET = os.getenv("JWT_SECRET")

app/db.py

@@ -1,8 +1,22 @@
 import os
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
+from dotenv import load_dotenv
+
+# 加载 .env 文件
+load_dotenv()
 
 DATABASE_URL = os.getenv("DATABASE_URL")
 
+#  自动将旧版的 postgres:// 替换为 SQLAlchemy 强要求的 postgresql://
+if DATABASE_URL and DATABASE_URL.startswith("postgres://"):
+    DATABASE_URL = DATABASE_URL.replace("postgres://", "postgresql://", 1)
+elif DATABASE_URL and DATABASE_URL.startswith("postgres+"):
+    DATABASE_URL = DATABASE_URL.replace("postgres+", "postgresql+", 1)
+
+# 如果环境变量彻底缺失，做一个安全的报错提示
+if not DATABASE_URL:
+    raise ValueError("DATABASE_URL environment variable is not set or empty.")
+
 engine = create_engine(DATABASE_URL)
 SessionLocal = sessionmaker(bind=engine)

app/main.py

@@ -24,8 +24,5 @@ schema = Schema(query=Query, mutation=Mutation)
 graphql_router = GraphQLRouter(schema, context_getter=get_context)
 
 # 挂载路由
-# 保留现有的 auth 路由供 Google OAuth 回调使用
-app.include_router(auth_router) 
-
-# 挂载 GraphQL 终点，前端以后只需要请求 /graphql
-app.include_router(graphql_router, prefix="/graphql")
+app.include_router(auth_router)                         # 保留现有的 auth 路由供 Google OAuth 回调使用
+app.include_router(graphql_router, prefix="/graphql")   # 挂载 GraphQL 终点，前端以后只需要请求 /graphql