'''
定义表的结构，并在数据库中创建对应的数据表
'''
__author__ = 'lmstack'

from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, String, create_engine, Integer, DateTime, BigInteger, FLOAT, TIMESTAMP, func
from urllib import parse
Base = declarative_base()


class DrivingRangeSnFactorNewest(Base):
    __tablename__ = "driving_range_sn_factor_newest"
    __table_args__ = ({'comment': '续驶里程 最新sn factor'})  # 添加索引和表注释

    # id = Column(Integer, primary_key=True, autoincrement=True, comment="主键")
    add_time = Column(TIMESTAMP(True), server_default=func.now(), comment='记录创建时间') # 创建时间
    update_time = Column(TIMESTAMP(True), nullable=False, server_default=func.now(), onupdate=func.now(), comment='记录更新时间') # 更新时间
    sn = Column(String(64), comment="sn,主键", primary_key=True)
    date = Column(DateTime, comment="日期")
    a0 = Column(FLOAT, comment="系数")
    a1 = Column(FLOAT, comment="系数")
    a2 = Column(FLOAT, comment="系数")
    a3 = Column(FLOAT, comment="系数")
    a4 = Column(FLOAT, comment="系数")


    def __init__(self, sn, date, a0, a1, a2, a3, a4):
        self.sn = sn
        self.date = date
        self.a0 = a0
        self.a1 = a1
        self.a2 = a2
        self.a3 = a3
        self.a4 = a4

# 执行该文件，创建表格到对应的数据库中
if __name__ == "__main__":
    host = 'rm-bp10j10qy42bzy0q77o.mysql.rds.aliyuncs.com'
    port = 3306
    user = 'qx_cas'
    password = parse.quote_plus('Qx@123456')
    database = 'qx_cas'
    
    db_engine = create_engine(
        "mysql+pymysql://{}:{}@{}:{}/{}?charset=utf8".format(
            user, password, host, port, database
        ))
    Base.metadata.create_all(db_engine)