#!/usr/bin/env python

from sqlalchemy import create_engine
from sqlalchemy import text
from sqlalchemy import Table, Column, Integer, String
from sqlalchemy import ForeignKey
from sqlalchemy import select
from sqlalchemy import insert
from sqlalchemy.orm import Session
from sqlalchemy.orm import declarative_base
from sqlalchemy.orm import relationship


Base = declarative_base()

engine = create_engine("sqlite+pysqlite:///:memory:", echo=True, future=True)


class User(Base):
    __tablename__ = 'user_account'
    id = Column(Integer, primary_key=True)
    name = Column(String(30))
    fullname = Column(String)
    addresses = relationship("Address", back_populates="user")

    def __repr__(self):
        return (
           f"User(id={self.id!r}, name={self.name!r}, "
           f"fullname={self.fullname!r})"
        )


class Address(Base):
    __tablename__ = 'address'
    id = Column(Integer, primary_key=True)
    email_address = Column(String, nullable=False)
    user_id = Column(Integer, ForeignKey('user_account.id'))
    user = relationship("User", back_populates="addresses")

    def __repr__(self):
        return f"Address(id={self.id!r}, email_address={self.email_address!r})"


Base.metadata.create_all(engine)

squidward = User(name="squidward", fullname="Squidward Tentacles")
krabs = User(name="ehkrabs", fullname="Eugene H. Krabs")

session = Session(engine)

session.add(squidward)
session.add(krabs)

session.commit()

u1 = User(name='pkrabs', fullname='Pearl Krabs')
a1 = Address(email_address="pearl.krabs@gmail.com")
u1.addresses.append(a1)
a2 = Address(email_address="pearl@aol.com", user=u1)

session.add(u1)
session.add(a1)
session.add(a2)

session.commit()


# with engine.connect() as conn:
#     conn.execute(text("CREATE TABLE some_table (x int, y int)"))
#     conn.execute(
#         text("INSERT INTO some_table (x, y) VALUES (:x, :y)"),
#         [{"x": 1, "y": 1}, {"x": 2, "y": 4}]
#     )
#     conn.commit()
#
# with engine.begin() as conn:
#     conn.execute(
#         text("INSERT INTO some_table (x, y) VALUES (:x, :y)"),
#         [{"x": 6, "y": 8}, {"x": 9, "y": 10}]
#     )
#
# # with engine.connect() as conn:
# #     result = conn.execute(text("SELECT x, y FROM some_table"))
# #     for row in result:
# #         print(f"x: {row.x}  y: {row.y}")
#
#
# stmt = text(
#     "SELECT x, y FROM some_table WHERE y > :y ORDER BY x, y").bindparams(y=6)
#
# with Session(engine) as session:
#     result = session.execute(stmt)
#     for row in result:
#         print(f"x: {row.x}  y: {row.y}")