"""Shared fixtures. Env vars are set before any app import so config.Settings()
fail-fast validation passes with deterministic test values regardless of the
developer's .env."""

import os

os.environ.setdefault(
    "SECRET_KEY", "test-secret-key-0123456789abcdef0123456789abcdef"
)
os.environ.setdefault("ADMIN_USERNAME", "testadmin")
os.environ.setdefault("ADMIN_PASSWORD", "test-password")
os.environ.setdefault("DATABASE_URL", "sqlite://")

import pytest
from sqlalchemy.pool import StaticPool
from sqlmodel import Session, SQLModel, create_engine

import app.models.models  # noqa: F401 — register all tables on the metadata


@pytest.fixture()
def engine():
    eng = create_engine(
        "sqlite://",
        connect_args={"check_same_thread": False},
        poolclass=StaticPool,
    )
    SQLModel.metadata.create_all(eng)
    yield eng
    eng.dispose()


@pytest.fixture()
def session(engine):
    with Session(engine) as s:
        yield s


@pytest.fixture(autouse=True)
def fixed_exchange_rates(monkeypatch):
    """Never hit the network: CRC passthrough, USD pinned at 500."""
    from app.services import exchange_rate

    monkeypatch.setattr(
        exchange_rate,
        "get_crc_multipliers",
        lambda session: {"CRC": 1.0, "USD": 500.0},
    )