from __future__ import annotations

import pytest

from app.schemas import parse_extract_json, to_cents


GOOD = """
{
  "doc_kind": "receipt",
  "category": "groceries",
  "vendor": "HEB",
  "date": "2026-08-21",
  "tax": 1.23,
  "total": 14.56,
  "currency": "USD",
  "line_items": [
    {"description": "milk", "qty": 1, "unit_price": 4.29, "amount": 4.29, "sku": null}
  ]
}
"""

FENCED = "```json\n" + GOOD + "\n```"


def test_parse_good() -> None:
    extract = parse_extract_json(GOOD)
    assert extract.vendor == "HEB"
    assert extract.category == "groceries"
    assert extract.line_items[0].description == "milk"
    assert to_cents(extract.total) == 1456


def test_parse_fenced() -> None:
    extract = parse_extract_json(FENCED)
    assert extract.date.isoformat() == "2026-08-21"


def test_unknown_category_falls_back() -> None:
    raw = GOOD.replace("groceries", "snacks-aisle")
    extract = parse_extract_json(raw)
    assert extract.category == "other"


def test_bad_types() -> None:
    with pytest.raises(Exception):
        parse_extract_json('{"doc_kind":"receipt","line_items":"nope"}')