# -*- coding:utf-8 -*-　　
# @name: poc_manage
# @auth: rainy-autumn@outlook.com
# @version:
import os
import shutil
import traceback

import yaml
from bson import ObjectId
from fastapi import APIRouter, Depends, File, UploadFile
from motor.motor_asyncio import AsyncIOMotorCursor
from starlette.background import BackgroundTasks

from api.users import verify_token
from core.db import get_mongo_db
from pymongo import ASCENDING, DESCENDING
from loguru import logger
from core.redis_handler import refresh_config
from core.util import *
import zipfile
router = APIRouter()


@router.post("/poc/data")
async def poc_data(request_data: dict, db=Depends(get_mongo_db), _: dict = Depends(verify_token)):
    try:
        search_query = request_data.get("search", "")
        page_index = request_data.get("pageIndex", 1)
        page_size = request_data.get("pageSize", 10)
        query = {"name": {"$regex": search_query, "$options": "i"}}

        # Get the total count of documents matching the search criteria
        total_count = await db.PocList.count_documents(query)
        # Perform pagination query and sort by time
        cursor: AsyncIOMotorCursor = db.PocList.find(query, {"_id": 0, "id": {"$toString": "$_id"}, "name": 1, "level": 1, "time": 1}).sort([("time", DESCENDING)]).skip((page_index - 1) * page_size).limit(page_size)
        result = await cursor.to_list(length=None)
        return {
            "code": 200,
            "data": {
                'list': result,
                'total': total_count
            }
        }

    except Exception as e:
        logger.error(str(e))
        # Handle exceptions as needed
        return {"message": "error", "code": 500}


def is_safe_path(base_path, target_path):
    # 计算规范化路径
    abs_base_path = os.path.abspath(base_path)
    abs_target_path = os.path.abspath(target_path)
    return abs_target_path.startswith(abs_base_path)


@router.post("/poc/data/import")
async def poc_import(file: UploadFile = File(...), db=Depends(get_mongo_db), _: dict = Depends(verify_token), background_tasks: BackgroundTasks = BackgroundTasks()):
    if not file.filename.endswith('.zip'):
        return {"message": "not zip", "code": 500}

    background_tasks.add_task(import_poc_handle, file)
    return {"message": "正在导入中", "code": 200}


async def import_poc_handle(file):
    logger.info("POC导入开始")
    async for db in get_mongo_db():
        file_name = generate_random_string(5)
        relative_path = f'file\\{file_name}.zip'
        zip_file_path = os.path.join(os.getcwd(), relative_path)
        with open(zip_file_path, "wb") as f:
            f.write(await file.read())

        yaml_files = []
        unzip_path = f'file\\{file_name}'
        file_path = os.path.join(os.getcwd(), unzip_path)
        extract_path = file_path
        os.makedirs(extract_path, exist_ok=True)
        with zipfile.ZipFile(zip_file_path, 'r') as zip_ref:
            for member in zip_ref.namelist():
                member_path = os.path.join(extract_path, member)
                if not is_safe_path(extract_path, member_path):
                    logger.error("Unsafe file path detected in ZIP file")
                    return
            zip_ref.extractall(extract_path)

            for root, dirs, files in os.walk(extract_path):
                for filename in files:
                    if filename.endswith('.yaml'):
                        file_path = os.path.join(root, filename)
                        yaml_files.append(file_path)
        hash_doc = await db.PocList.find({}, {"hash": 1, "_id": 0}).to_list(length=None)
        hash_list = [item["hash"] for item in hash_doc]
        success_num = 0
        error_num = 0
        repeat_num = 0
        insert_error_num = 0
        severity_dic = {
            "critical": 6,
            "high": 5,
            "medium": 4,
            "low": 3,
            "info": 2,
            "unkown": 1
        }
        logger.info(f"共{len(yaml_files)}个POC")
        poc_data_list = []
        for yaml_file in yaml_files:
            with open(yaml_file, 'r', encoding='utf-8') as stream:
                try:
                    file_content = stream.read()
                    data = yaml.safe_load(file_content)
                    name = data["id"]
                    if "severity" in data["info"]:
                        severity = data["info"]["severity"]
                    else:
                        severity = "unkown"
                    hash = calculate_md5_from_content(file_content)
                    if hash in hash_list:
                        repeat_num += 1
                        continue
                    if severity in severity_dic:
                        severity = severity_dic[severity]
                    else:
                        severity = 1
                    formatted_time = get_now_time()
                    data = {
                        "name": name,
                        "content": file_content,
                        "hash": hash,
                        "level": severity,
                        "time": formatted_time
                    }
                    poc_data_list.append(data)
                except:
                    logger.info(f"POC导入 读取文件失败: {yaml_file}")
                    logger.error(traceback.format_exc())
                    error_num += 1
                    continue
        if len(poc_data_list) != 0:
            result = await db.PocList.insert_many(poc_data_list)
            if result.inserted_ids:
                success_num += len(result.inserted_ids)
                await refresh_config('all', 'poc')
        logger.info(f"POC更新成功: {success_num} 重复：{repeat_num} 失败: {error_num}")
        try:
            os.remove(zip_file_path)
            shutil.rmtree(extract_path)
        except:
            logger.error(traceback.format_exc())
            logger.error("删除POC文件出错")
    logger.info("POC导入结束")


@router.get("/poc/data/all")
async def poc_data(db=Depends(get_mongo_db), _: dict = Depends(verify_token)):
    try:
        cursor: AsyncIOMotorCursor = db.PocList.find({}, {"id": {"$toString": "$_id"}, "name": 1, "time": -1, "_id": 0}).sort([("time", DESCENDING)])
        result = await cursor.to_list(length=None)
        return {
            "code": 200,
            "data": {
                'list': result
            }
        }
    except Exception as e:
        logger.error(str(e))
        # Handle exceptions as needed
        return {"message": "error", "code": 500}


@router.post("/poc/content")
async def poc_content(request_data: dict, db=Depends(get_mongo_db), _: dict = Depends(verify_token)):
    try:
        # Get the ID from the request data
        poc_id = request_data.get("id")

        # Check if ID is provided
        if not poc_id:
            return {"message": "ID is missing in the request data", "code": 400}

        # Query the database for content based on ID
        query = {"_id": ObjectId(poc_id)}
        doc = await db.PocList.find_one(query)

        if not doc:
            return {"message": "Content not found for the provided ID", "code": 404}

        # Extract the content
        content = doc.get("content", "")

        return {"code": 200, "data": {"content": content}}

    except Exception as e:
        logger.error(str(e))
        # Handle exceptions as needed
        return {"message": "error", "code": 500}


@router.post("/poc/update")
async def update_poc_data(request_data: dict, db=Depends(get_mongo_db), _: dict = Depends(verify_token)):
    try:
        # Get the ID from the request data
        poc_id = request_data.get("id")

        # Check if ID is provided
        if not poc_id:
            return {"message": "ID is missing in the request data", "code": 400}

        # Check if data to update is provided
        if not request_data:
            return {"message": "Data to update is missing in the request", "code": 400}

        # Extract individual fields from the request data
        name = request_data.get("name")
        content = request_data.get("content")
        hash_value = calculate_md5_from_content(content)
        level = request_data.get("level")

        # Prepare the update document
        update_document = {
            "$set": {
                "name": name,
                "content": content,
                "hash": hash_value,
                "level": level
            }
        }

        # Remove the ID from the request data to prevent it from being updated
        del request_data["id"]

        # Update data in the database
        result = await db.PocList.update_one({"_id": ObjectId(poc_id)}, update_document)
        # Check if the update was successful
        if result:
            await refresh_config('all', 'poc')
            return {"message": "Data updated successfully", "code": 200}
        else:
            return {"message": "Failed to update data", "code": 404}

    except Exception as e:
        logger.error(str(e))
        # Handle exceptions as needed
        return {"message": "error", "code": 500}


@router.post("/poc/add")
async def add_poc_data(request_data: dict, db=Depends(get_mongo_db), _: dict = Depends(verify_token)):
    try:
        # Check if data to add is provided
        if not request_data:
            return {"message": "Data to add is missing in the request", "code": 400}

        # Extract individual fields from the request data
        name = request_data.get("name")
        content = request_data.get("content")
        hash_value = calculate_md5_from_content(content)
        level = request_data.get("level")
        formatted_time = get_now_time()
        doc = await db.PocList.find_one({"hash": hash_value}, {"_id": 1})
        if doc:
            return {"message": "POC已存在", "code": 500}
        # Insert data into the database
        result = await db.PocList.insert_one({
            "name": name,
            "content": content,
            "hash": hash_value,
            "level": level,
            "time": formatted_time
        })

        # Check if the insertion was successful
        if result.inserted_id:
            await refresh_config('all', 'poc')
            return {"message": "Data added successfully", "code": 200}
        else:
            return {"message": "Failed to add data", "code": 400}

    except Exception as e:
        logger.error(str(e))
        # Handle exceptions as needed
        return {"message": "error", "code": 500}


@router.post("/poc/delete")
async def delete_poc_rules(request_data: dict, db=Depends(get_mongo_db), _: dict = Depends(verify_token)):
    try:
        # Extract the list of IDs from the request_data dictionary
        poc_ids = request_data.get("ids", [])

        # Convert the provided rule_ids to ObjectId
        obj_ids = [ObjectId(poc_id) for poc_id in poc_ids]

        # Delete the SensitiveRule documents based on the provided IDs
        result = await db.PocList.delete_many({"_id": {"$in": obj_ids}})

        # Check if the deletion was successful
        if result.deleted_count > 0:
            return {"code": 200, "message": "Poc deleted successfully"}
        else:
            return {"code": 404, "message": "Poc not found"}

    except Exception as e:
        logger.error(str(e))
        # Handle exceptions as needed
        return {"message": "error", "code": 500}