import logging
from contextlib import asynccontextmanager

import uvicorn
from fastapi import FastAPI

from config import Config
from workflows.workflow_manager import WorkflowManager
from services.nacos_service import load_nacos_config, load_service_config, NacosManager
from services.tool_router import ToolRouter
from api import endpoints

logger = logging.getLogger(__name__)


def create_app() -> FastAPI:
    """创建 FastAPI 应用"""
    service_config = load_service_config()
    nacos_config = load_nacos_config()
    default_model_section = Config._config.get("app", "model_section", fallback=Config.DEFAULT_MODEL_SECTION)

    workflow_manager = WorkflowManager(default_model_section=default_model_section)
    nacos_manager = NacosManager(nacos_config=nacos_config, service_config=service_config)
    tool_router = ToolRouter()

    @asynccontextmanager
    async def lifespan(app: FastAPI):
        """应用生命周期管理"""
        logger.info("🚀 服务启动中...")
        app.state.workflow_manager = workflow_manager
        app.state.nacos_manager = nacos_manager
        app.state.service_config = service_config
        app.state.tool_router = tool_router

        await nacos_manager.start()
        logger.info("✅ 服务准备就绪: %s on %s:%s", service_config.service_name, service_config.ip, service_config.port)
        yield
        logger.info("🛑 服务关闭中...")
        await nacos_manager.stop()
        logger.info("✅ 服务已关闭")

    app = FastAPI(
        title="More Dots API",
        description="More Dots 工作流服务",
        version=service_config.metadata.get("version", "1.0.0"),
        lifespan=lifespan,
    )

    app.include_router(endpoints.router)

    return app


app = create_app()


if __name__ == "__main__":
    service_config = load_service_config()
    uvicorn.run(
        "server:app",
        host=service_config.host,
        port=service_config.port,
        reload=False,
        log_level="info",
    )