"""
文献启明星 API 服务器
FastAPI应用程序入口
"""

import logging
import uvicorn
from fastapi import FastAPI, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from pathlib import Path
import sys
import os

# 添加项目根目录到Python路径
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from backend.api import research, chat, auth, users, chat_history, research_history
from backend.config import CORS_ORIGINS, BASE_DIR
from backend.core.models import Base
from backend.core.database import engine

# 创建数据库表
Base.metadata.create_all(bind=engine)

# 配置日志
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
    handlers=[
        logging.StreamHandler(),
        logging.FileHandler(Path(BASE_DIR) / "lightstar_api.log")
    ]
)

logger = logging.getLogger(__name__)

# 创建FastAPI应用
app = FastAPI(
    title="LightStar API",
    description="文献启明星 - 科研调研智能体API服务",
    version="0.1.0",
    docs_url=None,  # 禁用Swagger UI
    redoc_url=None  # 禁用ReDoc
)

# 配置CORS - 使用 config.py 中的设置
app.add_middleware(
    CORSMiddleware,
    allow_origins=CORS_ORIGINS,  # 使用配置文件中定义的域名列表
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# 注册路由
app.include_router(research.router, prefix="/api")
app.include_router(chat.router, prefix="/api")
app.include_router(auth.router, prefix="/api")
app.include_router(users.router, prefix="/api")
app.include_router(chat_history.router, prefix="/api")
app.include_router(research_history.router, prefix="/api")

# 健康检查端点
@app.get("/health")
async def health_check():
    return {"status": "healthy", "version": "0.1.0"}

# API信息端点
@app.get("/")
async def root():
    return {
        "name": "LightStar API",
        "description": "文献启明星 - 科研调研智能体API服务",
        "version": "0.1.0",
        "endpoints": [
            "/api/auth/token",
            "/api/auth/register",
            "/api/users/profile",
            "/api/chat-history",
            "/api/research-history",
            "/api/research/process",
            "/api/chat/send-message"
        ]
    }

# 启动服务器
if __name__ == "__main__":
    logger.info("Starting LightStar API server")
    # 使用模块的绝对路径确保可以从任何目录启动
    uvicorn.run("backend.main:app", host="0.0.0.0", port=8000, reload=True)