import datetime

TODAY = datetime.date.today().isoformat()


async def test_create_entry_returns_201(auth_client, diary, meal, entry_payload):
    response = await auth_client.post(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry", json=entry_payload
    )
    assert response.status_code == 201


async def test_create_entry_returns_correct_fields(
    auth_client, diary, meal, entry_payload, product
):
    response = await auth_client.post(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry", json=entry_payload
    )
    body = response.json()
    assert body["grams"] == entry_payload["grams"]
    assert body["product_id"] == product.id
    assert body["meal_id"] == meal.id
    assert "protein" in body
    assert "calories" in body


async def test_create_entry_zero_grams_returns_422(auth_client, diary, meal, product):
    response = await auth_client.post(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry",
        json={"grams": 0.0, "product_id": product.id},
    )
    assert response.status_code == 422


async def test_create_entry_negative_grams_returns_422(
    auth_client, diary, meal, product
):
    response = await auth_client.post(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry",
        json={"grams": -10.0, "product_id": product.id},
    )
    assert response.status_code == 422


async def test_create_entry_increments_user_product_usage(
    auth_client, auth_ctx, diary, meal, entry_payload, product
):
    await auth_client.post(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry", json=entry_payload
    )
    await auth_client.post(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry", json=entry_payload
    )
    usage = await auth_ctx.repo.user_product_usage.get_by_user_and_product(
        auth_ctx.user.id, product.id
    )
    assert usage.count == 2


async def test_create_entry_meal_not_found_returns_404(
    auth_client, diary, entry_payload
):
    response = await auth_client.post(
        f"/api/diary/{TODAY}/meal/99999/entry", json=entry_payload
    )
    assert response.status_code == 404


async def test_create_entry_without_auth_returns_401(
    client, diary, meal, entry_payload
):
    response = await client.post(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry", json=entry_payload
    )
    assert response.status_code == 401


async def test_update_entry_returns_200(auth_client, diary, meal, entry):
    response = await auth_client.patch(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry/{entry.id}",
        json={"grams": 200.0},
    )
    assert response.status_code == 200


async def test_update_entry_changes_grams(auth_client, diary, meal, entry):
    response = await auth_client.patch(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry/{entry.id}",
        json={"grams": 200.0},
    )
    assert response.json()["grams"] == 200.0


async def test_update_entry_not_found_returns_404(auth_client, diary, meal):
    response = await auth_client.patch(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry/99999",
        json={"grams": 200.0},
    )
    assert response.status_code == 404


async def test_delete_entry_returns_204(auth_client, diary, meal, entry):
    response = await auth_client.delete(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry/{entry.id}"
    )
    assert response.status_code == 204


async def test_delete_entry_without_auth_returns_401(client, diary, meal, entry):
    response = await client.delete(
        f"/api/diary/{TODAY}/meal/{meal.id}/entry/{entry.id}"
    )
    assert response.status_code == 401