feat(backend): complete modular monolith with ledger, fastapi and websocket

app/main.py

@@ -1,22 +1,25 @@
-from fastapi import FastAPI
-from fastapi.middleware.cors import CORSMiddleware
+import logging
 from contextlib import asynccontextmanager
+from fastapi import FastAPI, WebSocket, WebSocketDisconnect
+from fastapi.middleware.cors import CORSMiddleware
 from app.config import settings
+from app.api.routes.api import api_router
+from app.ws.manager import ws_manager
+
+logging.basicConfig(level=logging.INFO, format="%(asctime)s [%(levelname)s] %(name)s: %(message)s")
+logger = logging.getLogger("WTFX-Backend")
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    # 启动时：初始化 DB 连接池、Redis 事件总线与外部适配器
-    print(f"Starting {settings.PROJECT_NAME} in [{settings.ENVIRONMENT}] mode...")
+    logger.info(f"Starting {settings.PROJECT_NAME} v{settings.VERSION} [{settings.ENVIRONMENT}]")
     yield
-    # 关闭时：优雅断开连接
-    print(f"Shutting down {settings.PROJECT_NAME}...")
+    logger.info("Shutting down WTFX Backend service...")
 
 app = FastAPI(
     title=settings.PROJECT_NAME,
     version=settings.VERSION,
     lifespan=lifespan,
-    docs_url="/docs" if settings.ENVIRONMENT != "production" else None,
-    redoc_url="/redoc" if settings.ENVIRONMENT != "production" else None
+    docs_url="/docs" if settings.DEBUG or settings.ENVIRONMENT != "production" else None,
 )
 
 # CORS 配置
@@ -28,12 +31,23 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-@app.get("/health", tags=["System"])
+# 注册 API 路由
+app.include_router(api_router, prefix="/api")
+
+# WebSocket 实时订阅端点
+@app.websocket("/ws/market/{market_address}")
+async def websocket_market_endpoint(websocket: WebSocket, market_address: str):
+    channel = f"market:{market_address.lower()}"
+    await ws_manager.connect(websocket, channel)
+    try:
+        while True:
+            data = await websocket.receive_text()
+            # 客户端心跳 ping/pong
+            if data == "ping":
+                await websocket.send_text("pong")
+    except WebSocketDisconnect:
+        ws_manager.disconnect(websocket, channel)
+
+@app.get("/health")
 async def health_check():
-    """生产探活与健康检查端点 (Blue-Green Probe)"""
-    return {
-        "status": "ok",
-        "service": "wtfx-backend",
-        "version": settings.VERSION,
-        "environment": settings.ENVIRONMENT
-    }
+    return {"status": "ok", "version": settings.VERSION, "env": settings.ENVIRONMENT}