from __future__ import annotations

import typing as t

import pytest
import sqlalchemy as sa
import sqlalchemy.orm
from flask import Flask

from flask_sqlalchemy import SQLAlchemy
from flask_sqlalchemy.model import DefaultMeta
from flask_sqlalchemy.model import Model


def test_default_model_class(db: SQLAlchemy) -> None:
    assert db.Model.query_class is db.Query
    assert db.Model.metadata is db.metadata
    assert issubclass(db.Model, Model)
    assert isinstance(db.Model, DefaultMeta)


def test_custom_model_class(app: Flask) -> None:
    class CustomModel(Model):
        pass

    db = SQLAlchemy(app, model_class=CustomModel)
    assert issubclass(db.Model, CustomModel)
    assert isinstance(db.Model, DefaultMeta)


@pytest.mark.usefixtures("app_ctx")
@pytest.mark.parametrize("base", [Model, object])
def test_custom_declarative_class(app: Flask, base: t.Any) -> None:
    class CustomMeta(DefaultMeta):
        pass

    CustomModel = sa.orm.declarative_base(cls=base, name="Model", metaclass=CustomMeta)
    db = SQLAlchemy(app, model_class=CustomModel)
    assert db.Model is CustomModel
    assert db.Model.query_class is db.Query
    assert "query" in db.Model.__dict__


@pytest.mark.usefixtures("app_ctx")
def test_model_repr(db: SQLAlchemy) -> None:
    class User(db.Model):
        id = sa.Column(sa.Integer, primary_key=True)

    db.create_all()
    user = User()
    assert repr(user) == f"<User (transient {id(user)})>"
    db.session.add(user)
    assert repr(user) == f"<User (pending {id(user)})>"
    db.session.flush()
    assert repr(user) == f"<User {user.id}>"