微信，找回好友、羣聊用戶撤回的消息

還在好奇好友撤回了什麼消息嗎？羣裏撤回了什麼消息？下面的代碼實現了：即使羣、好友撤回了文本消息、表情、圖片等消息，自己也能知道撤回的什麼。

#coding=utf-8
import itchat
from itchat.content import TEXT
from itchat.content import *
import sys
import time
import re
import os

msg_information = {}
face_bug=None  #針對表情包的內容
@itchat.msg_register([TEXT,PICTURE,FRIENDS,CARD,MAP,SHARING,RECORDING,ATTACHMENT,VIDEO],isFriendChat=True,isGroupChat=True)
def receive_msg(msg):
    global face_bug
    msg_time_rec = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()) #接收消息的時間
    if 'ActualNickName' in msg:
        from_user = msg['ActualUserName'] #羣消息的發送者,用戶的唯一標識
        msg_from = msg['ActualNickName']#發送者羣內的暱稱
        friends = itchat.get_friends(update=True)#獲取所有好友
        for f in friends:
            if from_user == f['UserName']: #如果羣消息是好友發的
                if f['RemarkName']: # 優先使用好友的備註名稱，沒有則使用暱稱
                    msg_from = f['RemarkName']
                else:
                    msg_from = f['NickName']
                break
        groups = itchat.get_chatrooms(update=True)#獲取所有的羣
        for g in groups:
            if msg['FromUserName'] == g['UserName']:#根據羣消息的FromUserName匹配是哪個羣
                group_name = g['NickName']
                group_menbers = g['MemberCount']
                break
        group_name = group_name + "(" + str(group_menbers) +")"
    else:
        if itchat.search_friends(userName=msg['FromUserName'])['RemarkName']:#優先使用備註名稱
            msg_from = itchat.search_friends(userName=msg['FromUserName'])['RemarkName']
        else:
            msg_from = itchat.search_friends(userName=msg['FromUserName'])['NickName'] #在好友列表中查詢發送信息的好友暱稱
        group_name = ""
    msg_time = msg['CreateTime'] #信息發送的時間
    msg_id = msg['MsgId']    #每條信息的id
    msg_content = None      #儲存信息的內容
    msg_share_url = None    #儲存分享的鏈接，比如分享的文章和音樂
    if msg['Type'] == 'Text' or msg['Type'] == 'Friends':     #如果發送的消息是文本或者好友推薦
        msg_content = msg['Text']

    #如果發送的消息是附件、視頻、圖片、語音
    elif msg['Type'] == "Attachment" or msg['Type'] == "Video" \
            or msg['Type'] == 'Picture' \
            or msg['Type'] == 'Recording':
        msg_content = msg['FileName']    #內容就是他們的文件名
        msg['Text'](str(msg_content))    #下載文件

    elif msg['Type'] == 'Map':    #如果消息爲分享的位置信息
        x, y, location = re.search(
            "<location x=\"(.*?)\" y=\"(.*?)\".*label=\"(.*?)\".*", msg['OriContent']).group(1, 2, 3)
        if location is None:
            msg_content = r"緯度->" + x.__str__() + " 經度->" + y.__str__()     #內容爲詳細的地址
        else:
            msg_content = r"" + location

    elif msg['Type'] == 'Sharing':     #如果消息爲分享的音樂或者文章，詳細的內容爲文章的標題或者是分享的名字
        msg_content = msg['Text']
        msg_share_url = msg['Url']       #記錄分享的url
    face_bug = msg_content
    #將信息存儲在字典中，每一個msg_id對應一條信息
    time.sleep(2)
    msg_information.update(
        {
            msg_id: {
                "msg_from": msg_from,
                "msg_time": msg_time,
                "msg_time_rec": msg_time_rec,
                "msg_type": msg["Type"],
                "msg_content": msg_content,
                "msg_share_url": msg_share_url,
                "group_name":group_name
            }
        }
    )

    del_info = []
    for k in msg_information:
        m_time = msg_information[k]['msg_time'] #取得消息時間
        if int(time.time()) - m_time > 130: #如果消息時間是130秒甚至更久之前的，則刪除。
            del_info.append(k)
    if del_info:
        for i in del_info:
            msg_information.pop(i)

#監聽是否有消息撤回
@itchat.msg_register(NOTE,isFriendChat=True,isGroupChat=True,isMpChat=True)
def information(msg):
    #如果這裏的msg['Content']中包含消息撤回和id，就執行下面的語句
    if '撤回了一條消息' in msg['Content']:
        old_msg_id = re.search("\<msgid\>(.*?)\<\/msgid\>", msg['Content']).group(1) #在返回的content查找撤回的消息的id
        old_msg = msg_information.get(old_msg_id)    #獲取到消息原文,類型：字典
        print(old_msg)
        if len(old_msg_id)<11:  #如果發送的是表情包
            itchat.send_file(face_bug,toUserName='filehelper')

        else:  #發送撤回的提示給文件助手
            msg_body = old_msg['group_name'] + old_msg['msg_from'] +"\n" + old_msg['msg_time_rec'] \
                       + "撤回了:" + "\n" + r"" + old_msg['msg_content']

            #如果是分享的文件被撤回了，那麼就將分享的url加在msg_body中發送給文件助手
            if old_msg['msg_type'] == "Sharing":
                msg_body += "\n鏈接是:" + old_msg.get('msg_share_url')
            #print(msg_body)
            itchat.send_msg(msg_body, toUserName='filehelper')#將撤回消息發給文件助手

            #有文件的話也要將文件發送回去
            if old_msg["msg_type"] == "Picture" \
                    or old_msg["msg_type"] == "Recording" \
                    or old_msg["msg_type"] == "Video" \
                    or old_msg["msg_type"] == "Attachment":
                file = '@fil@%s' % (old_msg['msg_content'])
                itchat.send(msg=file, toUserName='filehelper')
                os.remove(old_msg['msg_content'])
            msg_information.pop(old_msg_id)# 刪除字典舊消息

itchat.auto_login(hotReload=True,enableCmdQR=1)
itchat.run()