"""
FastAPI 主应用
"""
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from fastapi.responses import FileResponse
from app.config import settings
from app.api import router
import os


# 创建 FastAPI 应用实例
app = FastAPI(
    title=settings.app_name,
    version=settings.app_version,
    description="一个基于 FastAPI 的 AI 调用示例工程，支持对话和工具调用"
)

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

# 注册路由
app.include_router(router, prefix="/api/v1", tags=["AI Chat"])

# 获取 static 目录的绝对路径
static_dir = os.path.join(os.path.dirname(os.path.dirname(__file__)), "static")

# 挂载静态文件目录
app.mount("/static", StaticFiles(directory=static_dir), name="static")


@app.get("/")
async def root():
    """根路径 - 返回主页"""
    return FileResponse(os.path.join(static_dir, "index.html"))


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


if __name__ == "__main__":
    import uvicorn
    uvicorn.run(
        "main:app",
        host=settings.host,
        port=settings.port,
        reload=settings.debug
    )