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2026-07-22 13:48:46 +08:00
commit c87751c3dc
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+"""
+FastAPI Web Server for CADDesigner.
+Web server implementation compatible with the OpenAI API specification.
+"""
+
+from contextlib import asynccontextmanager
+import uvicorn
+
+from bootstrap_env import load_project_env
+
+load_project_env()
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from .state import server_state
+from .routers import (
+    health_router,
+    agent_router,
+    conversation_router,
+    chat_router,
+)
+from .error_handlers import not_found_handler, internal_error_handler
+from SimpleLLMFunc.logger import push_error, app_log
+from SimpleLLMFunc.observability.langfuse_client import flush_all_observations
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """Application lifecycle management."""
+    app_log("🚀 Initializing CADDesigner Web Server...")
+    try:
+        server_state.initialize()
+        app_log("✅ CADDesigner initialized successfully!")
+    except Exception as e:
+        push_error(f"❌ Failed to initialize CADDesigner: {e}")
+        raise
+
+    yield
+
+    app_log("🔄 Shutting down CADDesigner Web Server...")
+    try:
+        flush_all_observations()
+        app_log("✅ Flushed Langfuse observations")
+    except Exception as e:
+        push_error(f"⚠️ Failed to flush Langfuse observations: {e}")
+
+
+# Create the FastAPI application.
+app = FastAPI(
+    title="CADDesigner API",
+    description="OpenAI-compatible API for CADDesigner",
+    version="1.0.0",
+    docs_url="/docs",
+    redoc_url="/redoc",
+    lifespan=lifespan,
+)
+
+# Add CORS middleware.
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # TODO: Restrict specific domains in production.
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Register routers.
+app.include_router(health_router)
+app.include_router(agent_router)
+app.include_router(conversation_router)
+app.include_router(chat_router)
+
+# Register error handlers.
+app.add_exception_handler(404, not_found_handler)
+app.add_exception_handler(500, internal_error_handler)
+
+
+if __name__ == "__main__":
+    uvicorn.run("web_interface.server:app", host="0.0.0.0", port=8000, reload=True)