"""Shared test fixtures.

The Lambda handlers create boto3 clients at import time, so a region and
dummy credentials must be in the environment before any handler module is
imported. Setting them here (conftest runs before test collection imports
anything) keeps every test hermetic — no real AWS calls can succeed with
these values.
"""

import importlib.util
import os
import sys
from pathlib import Path

import pytest

os.environ.setdefault("AWS_DEFAULT_REGION", "us-east-1")
os.environ.setdefault("AWS_ACCESS_KEY_ID", "testing")
os.environ.setdefault("AWS_SECRET_ACCESS_KEY", "testing")
os.environ.setdefault("AWS_SESSION_TOKEN", "testing")

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


def load_module(name: str, path: Path):
    """Import a module from an explicit file path under a unique name."""
    spec = importlib.util.spec_from_file_location(name, path)
    module = importlib.util.module_from_spec(spec)
    sys.modules[name] = module
    spec.loader.exec_module(module)
    return module


@pytest.fixture(params=["wo", "po"])
def ses_auth(request):
    """The ses_auth module of each pipeline (duplicated file, kept in sync)."""
    pipeline = request.param
    return load_module(
        f"{pipeline}_ses_auth",
        REPO_ROOT / "lambdas" / pipeline / "email_processor" / "ses_auth.py",
    )