import pymysql
from sqlalchemy import create_engine


class MySQLconnect():
    def __init__(self, dbname: str):
        if isinstance(dbname, str):
            self.dbname = dbname
            self.host = '192.168.100.33'
        else:
            raise TypeError("dbname must be a string")

    def __enter__(self):
        self.eng = self.engine()
        self.con = self.connect()
        self.cur = self.con.cursor()
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        self.eng.dispose()
        self.cur.close()
        self.con.close()
        if exc_val:
            raise

    def engine(self):
        return create_engine("mysql+pymysql://zhenggantian:123456@" + self.host + f":3306/{self.dbname}",
                              pool_size=10, max_overflow=5, pool_recycle=3600)

    def connect(self):
        return pymysql.connect(host=self.host, port=3306, database=self.dbname, user="zhenggantian", password="123456",
                               charset="utf8")


class DBconnect():
    def __init__(self):
            self.host = '192.168.100.33'
 
    def __enter__(self):
        self.eng = self.engine()
        self.con = self.connect()
        self.cur = self.con.cursor()
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        self.eng.dispose()
        self.cur.close()
        self.con.close()
        if exc_val:
            raise

    def engine(self):
        return create_engine("mysql+pymysql://logistics:logistics123@" + self.host + f":3306/logistics",
                              pool_size=10, max_overflow=5, pool_recycle=3600)

    def connect(self):
        return pymysql.connect(host=self.host, port=3306, database="logistics", user="logistics", password="logistics123",
                               charset="utf8")