from nonebot import on_notice, logger
from nonebot.typing import T_State
from nonebot.adapters.onebot.v11.event import GroupIncreaseNoticeEvent
from nonebot.adapters.onebot.v11 import Bot, Message
from nonebot_plugin_saa import Text, Image, MessageFactory
import os
import asyncio
import random

# 定义用于过滤目标群的规则函数
async def rule_fun(event: GroupIncreaseNoticeEvent):
    id = event.group_id
    if id in [621016172]:
        return True
    return False

# 监听群成员增加事件
group_welcome = on_notice(rule=rule_fun, priority=1, block=True)

@group_welcome.handle()
async def handle_group_increase(bot: Bot, event: GroupIncreaseNoticeEvent, state: T_State):
    """处理群成员增加事件，发送欢迎消息和帮助菜单"""
    # 获取新成员的用户ID
    user_id = event.get_user_id()
    
    # 构建欢迎消息文本
    welcome_messages = [
        f"本群通过祈愿召唤了勇者大人：[CQ:at,qq={user_id}]，欢迎加入！",
        f"欢迎 [CQ:at,qq={user_id}] 加入本群！请发送帮助查看更多功能~",
        f"[CQ:at,qq={user_id}] 已成功加入蛋定助手大家庭！请发送帮助查看更多功能，祝您使用愉快~"
    ]
    # 随机选择一条欢迎语
    welcome_text = random.choice(welcome_messages)
    
    try:
        # 获取帮助菜单图片的绝对路径
        # 这里不需要获取父目录，直接引用danding_help插件的路径
        image_path = os.path.join(os.path.dirname(os.path.dirname(__file__)), 
                                 "danding_help", "img", "帮助菜单.jpg")
        
        # 检查文件是否存在
        if not os.path.exists(image_path):
            logger.error(f"帮助菜单图片不存在: {image_path}")
            await group_welcome.finish(Message(welcome_text))
            return
            
        # 读取图片
        with open(image_path, "rb") as f:
            image_bytes = f.read()
        
        # 添加随机延迟，模拟人工反应
        await asyncio.sleep(random.uniform(2, 3))
        
        # 发送欢迎消息和帮助菜单图片
        await MessageFactory([
            Text(welcome_text),
            Image(image_bytes)
        ]).send()
        
        logger.info(f"已发送欢迎消息给新成员 {user_id} 在群 {event.group_id}")
    except Exception as e:
        logger.error(f"发送欢迎消息失败: {e}")
        # 发生错误时尝试直接发送文本消息
        await group_welcome.finish(Message(welcome_text))