from typing import Optional

import databases
import sqlalchemy
from fastapi import FastAPI
from starlette.testclient import TestClient

import ormar
from tests.settings import DATABASE_URL

app = FastAPI()

database = databases.Database(DATABASE_URL, force_rollback=True)
metadata = sqlalchemy.MetaData()


class Category(ormar.Model):
    class Meta:
        tablename = "categories"
        metadata = metadata
        database = database

    id: int = ormar.Integer(primary_key=True)
    name: str = ormar.String(max_length=100)


class Item(ormar.Model):
    class Meta:
        tablename = "items"
        metadata = metadata
        database = database

    id: int = ormar.Integer(primary_key=True)
    name: str = ormar.String(max_length=100)
    category: Optional[Category] = ormar.ForeignKey(Category, nullable=True)


@app.post("/items/", response_model=Item)
async def create_item(item: Item):
    return item


def test_read_main():
    client = TestClient(app)
    with client as client:
        response = client.post(
            "/items/", json={"name": "test", "id": 1, "category": {"name": "test cat"}}
        )
        assert response.status_code == 200
        assert response.json() == {
            "category": {
                "id": None,
                "items": [{"id": 1, "name": "test"}],
                "name": "test cat",
            },
            "id": 1,
            "name": "test",
        }
        item = Item(**response.json())
        assert item.id == 1