"""Shared test fixtures. Locates the Jan-2026 sample files (large; integration tests)."""
from __future__ import annotations

import os
from pathlib import Path

import pytest

# Default: the project root two levels above ar-aging-app/backend.
_DEFAULT_SAMPLE_DIR = Path(__file__).resolve().parents[3]

SAMPLE_DIR = Path(os.environ.get("AR_SAMPLE_DIR", str(_DEFAULT_SAMPLE_DIR)))

JAN_FILES = [
    "USA Amazon Transactions 01 to 10 January,2026.xlsx",
    "USA Amazon Transactions 11 to 20 January,2026.xlsx",
    "USA Amazon Transactions 21 to 31 January,2026.xlsx",
]
SAMPLE_WORKBOOK = "Accounts Receivable Aging (Jan-26) 1.xlsx"


@pytest.fixture(scope="session")
def jan_files() -> list[str]:
    paths = [str(SAMPLE_DIR / f) for f in JAN_FILES]
    missing = [p for p in paths if not os.path.exists(p)]
    if missing:
        pytest.skip(f"Sample Jan-2026 files not found: {missing}")
    return paths


@pytest.fixture(scope="session")
def sample_workbook() -> str:
    p = str(SAMPLE_DIR / SAMPLE_WORKBOOK)
    if not os.path.exists(p):
        pytest.skip(f"Sample workbook not found: {p}")
    return p