from __future__ import annotations

import json
from pathlib import Path

import pytest
from pydantic import ValidationError

from bl_ocr.domain.models import DeliveryNote

PROJECT_ROOT = Path(__file__).resolve().parents[1]


def _example() -> dict:
    return json.loads((PROJECT_ROOT / "example.json").read_text(encoding="utf-8"))


def test_models_parse_example():
    note = DeliveryNote.model_validate(_example())
    assert note.products[0].pharmacist_price_ttc.value == 5.35
    assert note.totals.line_count.value == 3


def test_models_forbid_extra_keys():
    annotation = _example()
    annotation["products"][0]["_repaired"] = "leak"
    with pytest.raises(ValidationError):
        DeliveryNote.model_validate(annotation)


def test_models_enforce_confidence_bounds():
    annotation = _example()
    annotation["products"][0]["quantity"]["confidence"] = 1.5
    with pytest.raises(ValidationError):
        DeliveryNote.model_validate(annotation)


def test_models_allow_null_values():
    annotation = _example()
    annotation["products"][0]["expiry_date"]["value"] = None
    note = DeliveryNote.model_validate(annotation)
    assert note.products[0].expiry_date.value is None