"""
FastAPI 应用主入口
"""
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from app.config import settings
from app.api import api_router

# 创建 FastAPI 应用实例
app = FastAPI(
    title=settings.APP_NAME,
    description="基于大语言模型的文档理解与多源数据融合系统",
    version="1.0.0",
    openapi_url=f"{settings.API_V1_STR}/openapi.json",
    docs_url=f"{settings.API_V1_STR}/docs",
    redoc_url=f"{settings.API_V1_STR}/redoc"
)

# 配置 CORS 中间件
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# 注册 API 路由
app.include_router(api_router, prefix=settings.API_V1_STR)


@app.get("/")
async def root():
    """根路径"""
    return {
        "message": f"Welcome to {settings.APP_NAME}",
        "status": "online",
        "version": "1.0.0",
        "debug_mode": settings.DEBUG,
        "api_docs": f"{settings.API_V1_STR}/docs"
    }


@app.get("/health")
async def health_check():
    """健康检查接口"""
    return {
        "status": "healthy",
        "service": settings.APP_NAME
    }


if __name__ == "__main__":
    import uvicorn

    uvicorn.run(
        "app.main:app",
        host="127.0.0.1",
        port=8000,
        reload=settings.DEBUG
    )