mirror of
https://github.com/LC044/WeChatMsg
synced 2024-11-15 06:11:19 +08:00
127 lines
3.5 KiB
Python
127 lines
3.5 KiB
Python
import os.path
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import sqlite3
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import threading
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import traceback
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from pprint import pprint
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from app.log import logger
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DB = None
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cursor = None
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db_path = "./app/Database/Msg/MSG.db"
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lock = threading.Lock()
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def is_database_exist():
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return os.path.exists(db_path)
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def singleton(cls):
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_instance = {}
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def inner():
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if cls not in _instance:
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_instance[cls] = cls()
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return _instance[cls]
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return inner
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@singleton
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class Msg:
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def __init__(self):
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self.DB = None
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self.cursor = None
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self.open_flag = False
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self.init_database()
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def init_database(self):
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if not self.open_flag:
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if os.path.exists(db_path):
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self.DB = sqlite3.connect(db_path, check_same_thread=False)
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# '''创建游标'''
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self.cursor = self.DB.cursor()
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self.open_flag = True
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if lock.locked():
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lock.release()
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def get_messages(self, username_):
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if not self.open_flag:
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return None
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sql = '''
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select localId,TalkerId,Type,SubType,IsSender,CreateTime,Status,StrContent,strftime('%Y-%m-%d %H:%M:%S',CreateTime,'unixepoch','localtime') as StrTime,MsgSvrID
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from MSG
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where StrTalker=?
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order by CreateTime
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'''
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try:
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lock.acquire(True)
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self.cursor.execute(sql, [username_])
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result = self.cursor.fetchall()
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finally:
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lock.release()
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result.sort(key=lambda x: x[5])
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return result
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def get_messages_all(self):
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sql = '''
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select localId,TalkerId,Type,SubType,IsSender,CreateTime,Status,StrContent,strftime('%Y-%m-%d %H:%M:%S',CreateTime,'unixepoch','localtime') as StrTime,MsgSvrID
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from MSG
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order by CreateTime
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'''
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if not self.open_flag:
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return None
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try:
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lock.acquire(True)
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self.cursor.execute(sql)
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result = self.cursor.fetchall()
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finally:
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lock.release()
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result.sort(key=lambda x: x[5])
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return result
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def get_message_by_num(self, username_, local_id):
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sql = '''
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select localId,TalkerId,Type,SubType,IsSender,CreateTime,Status,StrContent,strftime('%Y-%m-%d %H:%M:%S',CreateTime,'unixepoch','localtime') as StrTime
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from MSG
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where StrTalker = ? and localId < ?
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order by CreateTime desc
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limit 10
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'''
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result = None
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if not self.open_flag:
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return None
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try:
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lock.acquire(True)
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self.cursor.execute(sql, [username_, local_id])
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result = self.cursor.fetchall()
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except sqlite3.DatabaseError:
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logger.error(f'{traceback.format_exc()}\n数据库损坏请删除msg文件夹重试')
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finally:
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lock.release()
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# result.sort(key=lambda x: x[5])
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return result
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def close(self):
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if self.open_flag:
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try:
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lock.acquire(True)
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self.open_flag = False
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self.DB.close()
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finally:
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lock.release()
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def __del__(self):
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self.close()
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if __name__ == '__main__':
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db_path = "./Msg/MSG.db"
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msg = Msg()
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msg.init_database()
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result = msg.get_message_by_num('wxid_0o18ef858vnu22', 9999999)
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print(result)
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print(result[-1][0])
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local_id = result[-1][0]
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pprint(msg.get_message_by_num('wxid_0o18ef858vnu22', local_id))
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