#  Copyright 2026 zhaoxi826
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

from fastapi import APIRouter, Depends, HTTPException, UploadFile, File
from pydantic import BaseModel
from kilostar.utils.access import Accessor, TokenData
from kilostar.utils.ray_hook import ray_actor_hook
import os
import anyio
from kilostar.utils.logger import get_logger


logger = get_logger("frontend")
client_router = APIRouter(prefix="/api/v1/adapter/client", tags=["client"])


class Message(BaseModel):
    """``POST /client`` 入参：来自前端的一段聊天文本。"""

    message: str


@client_router.post("")
async def create_message(
    message: Message, token_data: TokenData = Depends(Accessor.get_current_user)
):
    """把前端消息转交给 RegulatoryNode 处理，并把回复透传给前端。"""
    logger.info("收到消息，来源：客户端")
    logger.debug(f"消息内容：{message.message}")
    regulatory_node = ray_actor_hook("regulatory_node").regulatory_node
    reply = await regulatory_node.handle_client_message.remote(
        user_id=token_data.user_id,
        user_name=token_data.username,
        message=message.message,
    )
    return {"message": reply}


@client_router.post("/upload")
async def upload_file(
    file: UploadFile = File(...),
    token_data: TokenData = Depends(Accessor.get_current_user),
):
    """以流式方式把上传文件落到 ``uploads/`` 目录；失败抛 500。"""
    try:
        upload_dir = "uploads"
        os.makedirs(upload_dir, exist_ok=True)
        file_path = os.path.join(upload_dir, file.filename)
        async with await anyio.open_file(file_path, "wb") as buffer:
            while chunk := await file.read(64 * 1024):  # 64KB chunks
                await buffer.write(chunk)
        logger.info(f"用户 {token_data.username} 上传了文件: {file.filename}")
        return {
            "filename": file.filename,
            "message": f"File {file.filename} uploaded successfully",
        }
    except Exception as e:
        logger.error(f"文件上传失败: {e}")
        raise HTTPException(status_code=500, detail="文件上传失败")