import datetime
import databases
import sqlalchemy

import ormar

database = databases.Database("sqlite:///db.sqlite")
metadata = sqlalchemy.MetaData()


class Course(ormar.Model):
    class Meta:
        database = database
        metadata = metadata
        # define your constraints in Meta class of the model
        # it's a list that can contain multiple constraints
        # hera a combination of name and column will have a level check in the db
        constraints = [
            ormar.CheckColumns("start_time < end_time", name="date_check"),
        ]

    id: int = ormar.Integer(primary_key=True)
    name: str = ormar.String(max_length=100)
    start_date: datetime.date = ormar.Date()
    end_date: datetime.date = ormar.Date()